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6c743b2b39
v8/test/cctest/test-heap.cc
bmeurer 6c743b2b39 [runtime] Store constructor function index on primitive maps. 
This way we can greatly simplify the different variants of ToObject in
our codebase and make them more uniform and robust.  Adding a new
primitive doesn't require finding and changing all those places again,
but it is sufficient to setup the constructor function index when
allocating the map.

We use the inobject properties field of Map, which is invalid primitive
maps anyway.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1276533003

Cr-Commit-Position: refs/heads/master@{#30119}
2015-08-11 19:36:14 +00:00

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// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <stdlib.h>
#include <utility>
#include "src/v8.h"
#include "src/compilation-cache.h"
#include "src/context-measure.h"
#include "src/deoptimizer.h"
#include "src/execution.h"
#include "src/factory.h"
#include "src/global-handles.h"
#include "src/ic/ic.h"
#include "src/macro-assembler.h"
#include "src/snapshot/snapshot.h"
#include "test/cctest/cctest.h"
using namespace v8::internal;
using v8::Just;
static void CheckMap(Map* map, int type, int instance_size) {
CHECK(map->IsHeapObject());
#ifdef DEBUG
CHECK(CcTest::heap()->Contains(map));
#endif
CHECK_EQ(CcTest::heap()->meta_map(), map->map());
CHECK_EQ(type, map->instance_type());
CHECK_EQ(instance_size, map->instance_size());
}
TEST(HeapMaps) {
CcTest::InitializeVM();
Heap* heap = CcTest::heap();
CheckMap(heap->meta_map(), MAP_TYPE, Map::kSize);
CheckMap(heap->heap_number_map(), HEAP_NUMBER_TYPE, HeapNumber::kSize);
#define SIMD128_TYPE(TYPE, Type, type, lane_count, lane_type) \
CheckMap(heap->type##_map(), SIMD128_VALUE_TYPE, Type::kSize);
SIMD128_TYPES(SIMD128_TYPE)
#undef SIMD128_TYPE
CheckMap(heap->fixed_array_map(), FIXED_ARRAY_TYPE, kVariableSizeSentinel);
CheckMap(heap->string_map(), STRING_TYPE, kVariableSizeSentinel);
}
static void CheckOddball(Isolate* isolate, Object* obj, const char* string) {
CHECK(obj->IsOddball());
Handle<Object> handle(obj, isolate);
Object* print_string =
*Execution::ToString(isolate, handle).ToHandleChecked();
CHECK(String::cast(print_string)->IsUtf8EqualTo(CStrVector(string)));
}
static void CheckSmi(Isolate* isolate, int value, const char* string) {
Handle<Object> handle(Smi::FromInt(value), isolate);
Object* print_string =
*Execution::ToString(isolate, handle).ToHandleChecked();
CHECK(String::cast(print_string)->IsUtf8EqualTo(CStrVector(string)));
}
static void CheckNumber(Isolate* isolate, double value, const char* string) {
Handle<Object> number = isolate->factory()->NewNumber(value);
CHECK(number->IsNumber());
Handle<Object> print_string =
Execution::ToString(isolate, number).ToHandleChecked();
CHECK(String::cast(*print_string)->IsUtf8EqualTo(CStrVector(string)));
}
static void CheckFindCodeObject(Isolate* isolate) {
// Test FindCodeObject
#define __ assm.
Assembler assm(isolate, NULL, 0);
__ nop(); // supported on all architectures
CodeDesc desc;
assm.GetCode(&desc);
Handle<Code> code = isolate->factory()->NewCode(
desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
CHECK(code->IsCode());
HeapObject* obj = HeapObject::cast(*code);
Address obj_addr = obj->address();
for (int i = 0; i < obj->Size(); i += kPointerSize) {
Object* found = isolate->FindCodeObject(obj_addr + i);
CHECK_EQ(*code, found);
}
Handle<Code> copy = isolate->factory()->NewCode(
desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
HeapObject* obj_copy = HeapObject::cast(*copy);
Object* not_right = isolate->FindCodeObject(obj_copy->address() +
obj_copy->Size() / 2);
CHECK(not_right != *code);
}
TEST(HandleNull) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
HandleScope outer_scope(isolate);
LocalContext context;
Handle<Object> n(static_cast<Object*>(nullptr), isolate);
CHECK(!n.is_null());
}
TEST(HeapObjects) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
Heap* heap = isolate->heap();
HandleScope sc(isolate);
Handle<Object> value = factory->NewNumber(1.000123);
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(1.000123, value->Number());
value = factory->NewNumber(1.0);
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(1.0, value->Number());
value = factory->NewNumberFromInt(1024);
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(1024.0, value->Number());
value = factory->NewNumberFromInt(Smi::kMinValue);
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(Smi::kMinValue, Handle<Smi>::cast(value)->value());
value = factory->NewNumberFromInt(Smi::kMaxValue);
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(Smi::kMaxValue, Handle<Smi>::cast(value)->value());
#if !defined(V8_TARGET_ARCH_64_BIT)
// TODO(lrn): We need a NumberFromIntptr function in order to test this.
value = factory->NewNumberFromInt(Smi::kMinValue - 1);
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(static_cast<double>(Smi::kMinValue - 1), value->Number());
#endif
value = factory->NewNumberFromUint(static_cast<uint32_t>(Smi::kMaxValue) + 1);
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(static_cast<double>(static_cast<uint32_t>(Smi::kMaxValue) + 1),
value->Number());
value = factory->NewNumberFromUint(static_cast<uint32_t>(1) << 31);
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(static_cast<double>(static_cast<uint32_t>(1) << 31),
value->Number());
// nan oddball checks
CHECK(factory->nan_value()->IsNumber());
CHECK(std::isnan(factory->nan_value()->Number()));
Handle<String> s = factory->NewStringFromStaticChars("fisk hest ");
CHECK(s->IsString());
CHECK_EQ(10, s->length());
Handle<String> object_string = Handle<String>::cast(factory->Object_string());
Handle<GlobalObject> global(CcTest::i_isolate()->context()->global_object());
CHECK(Just(true) == JSReceiver::HasOwnProperty(global, object_string));
// Check ToString for oddballs
CheckOddball(isolate, heap->true_value(), "true");
CheckOddball(isolate, heap->false_value(), "false");
CheckOddball(isolate, heap->null_value(), "null");
CheckOddball(isolate, heap->undefined_value(), "undefined");
// Check ToString for Smis
CheckSmi(isolate, 0, "0");
CheckSmi(isolate, 42, "42");
CheckSmi(isolate, -42, "-42");
// Check ToString for Numbers
CheckNumber(isolate, 1.1, "1.1");
CheckFindCodeObject(isolate);
}
template <typename T, typename LANE_TYPE, int LANES>
static void CheckSimdValue(T* value, LANE_TYPE lane_values[LANES],
LANE_TYPE other_value) {
// Check against lane_values, and check that all lanes can be set to
// other_value without disturbing the other lanes.
for (int i = 0; i < LANES; i++) {
CHECK_EQ(lane_values[i], value->get_lane(i));
}
for (int i = 0; i < LANES; i++) {
value->set_lane(i, other_value); // change the value
for (int j = 0; j < LANES; j++) {
if (i != j)
CHECK_EQ(lane_values[j], value->get_lane(j));
else
CHECK_EQ(other_value, value->get_lane(j));
}
value->set_lane(i, lane_values[i]); // restore the lane
}
CHECK(value->BooleanValue()); // SIMD values are 'true'.
}
TEST(SimdObjects) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
HandleScope sc(isolate);
// Float32x4
{
float lanes[4] = {1, 2, 3, 4};
float quiet_NaN = std::numeric_limits<float>::quiet_NaN();
float signaling_NaN = std::numeric_limits<float>::signaling_NaN();
Handle<Float32x4> value = factory->NewFloat32x4(lanes);
CHECK(value->IsFloat32x4());
CheckSimdValue<Float32x4, float, 4>(*value, lanes, 3.14f);
// Check special lane values.
value->set_lane(1, -0.0);
CHECK_EQ(-0.0, value->get_lane(1));
CHECK(std::signbit(value->get_lane(1))); // Sign bit should be preserved.
value->set_lane(2, quiet_NaN);
CHECK(std::isnan(value->get_lane(2)));
value->set_lane(3, signaling_NaN);
CHECK(std::isnan(value->get_lane(3)));
#ifdef OBJECT_PRINT
// Check value printing.
{
value = factory->NewFloat32x4(lanes);
std::ostringstream os;
value->Float32x4Print(os);
CHECK_EQ("1, 2, 3, 4", os.str());
}
{
float special_lanes[4] = {0, -0.0, quiet_NaN, signaling_NaN};
value = factory->NewFloat32x4(special_lanes);
std::ostringstream os;
value->Float32x4Print(os);
// Value printing doesn't preserve signed zeroes.
CHECK_EQ("0, 0, NaN, NaN", os.str());
}
#endif // OBJECT_PRINT
}
// Int32x4
{
int32_t lanes[4] = {-1, 0, 1, 2};
Handle<Int32x4> value = factory->NewInt32x4(lanes);
CHECK(value->IsInt32x4());
CheckSimdValue<Int32x4, int32_t, 4>(*value, lanes, 3);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Int32x4Print(os);
CHECK_EQ("-1, 0, 1, 2", os.str());
#endif // OBJECT_PRINT
}
// Bool32x4
{
bool lanes[4] = {true, true, true, false};
Handle<Bool32x4> value = factory->NewBool32x4(lanes);
CHECK(value->IsBool32x4());
CheckSimdValue<Bool32x4, bool, 4>(*value, lanes, false);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Bool32x4Print(os);
CHECK_EQ("true, true, true, false", os.str());
#endif // OBJECT_PRINT
}
// Int16x8
{
int16_t lanes[8] = {-1, 0, 1, 2, 3, 4, 5, -32768};
Handle<Int16x8> value = factory->NewInt16x8(lanes);
CHECK(value->IsInt16x8());
CheckSimdValue<Int16x8, int16_t, 8>(*value, lanes, 32767);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Int16x8Print(os);
CHECK_EQ("-1, 0, 1, 2, 3, 4, 5, -32768", os.str());
#endif // OBJECT_PRINT
}
// Bool16x8
{
bool lanes[8] = {true, true, true, true, true, true, true, false};
Handle<Bool16x8> value = factory->NewBool16x8(lanes);
CHECK(value->IsBool16x8());
CheckSimdValue<Bool16x8, bool, 8>(*value, lanes, false);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Bool16x8Print(os);
CHECK_EQ("true, true, true, true, true, true, true, false", os.str());
#endif // OBJECT_PRINT
}
// Int8x16
{
int8_t lanes[16] = {-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -128};
Handle<Int8x16> value = factory->NewInt8x16(lanes);
CHECK(value->IsInt8x16());
CheckSimdValue<Int8x16, int8_t, 16>(*value, lanes, 127);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Int8x16Print(os);
CHECK_EQ("-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -128",
os.str());
#endif // OBJECT_PRINT
}
// Bool8x16
{
bool lanes[16] = {true, true, true, true, true, true, true, false,
true, true, true, true, true, true, true, false};
Handle<Bool8x16> value = factory->NewBool8x16(lanes);
CHECK(value->IsBool8x16());
CheckSimdValue<Bool8x16, bool, 16>(*value, lanes, false);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Bool8x16Print(os);
CHECK_EQ(
"true, true, true, true, true, true, true, false, true, true, true, "
"true, true, true, true, false",
os.str());
#endif // OBJECT_PRINT
}
}
TEST(Tagging) {
CcTest::InitializeVM();
int request = 24;
CHECK_EQ(request, static_cast<int>(OBJECT_POINTER_ALIGN(request)));
CHECK(Smi::FromInt(42)->IsSmi());
CHECK(Smi::FromInt(Smi::kMinValue)->IsSmi());
CHECK(Smi::FromInt(Smi::kMaxValue)->IsSmi());
}
TEST(GarbageCollection) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
HandleScope sc(isolate);
// Check GC.
heap->CollectGarbage(NEW_SPACE);
Handle<GlobalObject> global(CcTest::i_isolate()->context()->global_object());
Handle<String> name = factory->InternalizeUtf8String("theFunction");
Handle<String> prop_name = factory->InternalizeUtf8String("theSlot");
Handle<String> prop_namex = factory->InternalizeUtf8String("theSlotx");
Handle<String> obj_name = factory->InternalizeUtf8String("theObject");
Handle<Smi> twenty_three(Smi::FromInt(23), isolate);
Handle<Smi> twenty_four(Smi::FromInt(24), isolate);
{
HandleScope inner_scope(isolate);
// Allocate a function and keep it in global object's property.
Handle<JSFunction> function = factory->NewFunction(name);
JSReceiver::SetProperty(global, name, function, SLOPPY).Check();
// Allocate an object. Unrooted after leaving the scope.
Handle<JSObject> obj = factory->NewJSObject(function);
JSReceiver::SetProperty(obj, prop_name, twenty_three, SLOPPY).Check();
JSReceiver::SetProperty(obj, prop_namex, twenty_four, SLOPPY).Check();
CHECK_EQ(Smi::FromInt(23),
*Object::GetProperty(obj, prop_name).ToHandleChecked());
CHECK_EQ(Smi::FromInt(24),
*Object::GetProperty(obj, prop_namex).ToHandleChecked());
}
heap->CollectGarbage(NEW_SPACE);
// Function should be alive.
CHECK(Just(true) == JSReceiver::HasOwnProperty(global, name));
// Check function is retained.
Handle<Object> func_value =
Object::GetProperty(global, name).ToHandleChecked();
CHECK(func_value->IsJSFunction());
Handle<JSFunction> function = Handle<JSFunction>::cast(func_value);
{
HandleScope inner_scope(isolate);
// Allocate another object, make it reachable from global.
Handle<JSObject> obj = factory->NewJSObject(function);
JSReceiver::SetProperty(global, obj_name, obj, SLOPPY).Check();
JSReceiver::SetProperty(obj, prop_name, twenty_three, SLOPPY).Check();
}
// After gc, it should survive.
heap->CollectGarbage(NEW_SPACE);
CHECK(Just(true) == JSReceiver::HasOwnProperty(global, obj_name));
Handle<Object> obj =
Object::GetProperty(global, obj_name).ToHandleChecked();
CHECK(obj->IsJSObject());
CHECK_EQ(Smi::FromInt(23),
*Object::GetProperty(obj, prop_name).ToHandleChecked());
}
static void VerifyStringAllocation(Isolate* isolate, const char* string) {
HandleScope scope(isolate);
Handle<String> s = isolate->factory()->NewStringFromUtf8(
CStrVector(string)).ToHandleChecked();
CHECK_EQ(StrLength(string), s->length());
for (int index = 0; index < s->length(); index++) {
CHECK_EQ(static_cast<uint16_t>(string[index]), s->Get(index));
}
}
TEST(String) {
CcTest::InitializeVM();
Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
VerifyStringAllocation(isolate, "a");
VerifyStringAllocation(isolate, "ab");
VerifyStringAllocation(isolate, "abc");
VerifyStringAllocation(isolate, "abcd");
VerifyStringAllocation(isolate, "fiskerdrengen er paa havet");
}
TEST(LocalHandles) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
const char* name = "Kasper the spunky";
Handle<String> string = factory->NewStringFromAsciiChecked(name);
CHECK_EQ(StrLength(name), string->length());
}
TEST(GlobalHandles) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
GlobalHandles* global_handles = isolate->global_handles();
Handle<Object> h1;
Handle<Object> h2;
Handle<Object> h3;
Handle<Object> h4;
{
HandleScope scope(isolate);
Handle<Object> i = factory->NewStringFromStaticChars("fisk");
Handle<Object> u = factory->NewNumber(1.12344);
h1 = global_handles->Create(*i);
h2 = global_handles->Create(*u);
h3 = global_handles->Create(*i);
h4 = global_handles->Create(*u);
}
// after gc, it should survive
heap->CollectGarbage(NEW_SPACE);
CHECK((*h1)->IsString());
CHECK((*h2)->IsHeapNumber());
CHECK((*h3)->IsString());
CHECK((*h4)->IsHeapNumber());
CHECK_EQ(*h3, *h1);
GlobalHandles::Destroy(h1.location());
GlobalHandles::Destroy(h3.location());
CHECK_EQ(*h4, *h2);
GlobalHandles::Destroy(h2.location());
GlobalHandles::Destroy(h4.location());
}
static bool WeakPointerCleared = false;
static void TestWeakGlobalHandleCallback(
const v8::WeakCallbackData<v8::Value, void>& data) {
std::pair<v8::Persistent<v8::Value>*, int>* p =
reinterpret_cast<std::pair<v8::Persistent<v8::Value>*, int>*>(
data.GetParameter());
if (p->second == 1234) WeakPointerCleared = true;
p->first->Reset();
}
TEST(WeakGlobalHandlesScavenge) {
i::FLAG_stress_compaction = false;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
GlobalHandles* global_handles = isolate->global_handles();
WeakPointerCleared = false;
Handle<Object> h1;
Handle<Object> h2;
{
HandleScope scope(isolate);
Handle<Object> i = factory->NewStringFromStaticChars("fisk");
Handle<Object> u = factory->NewNumber(1.12344);
h1 = global_handles->Create(*i);
h2 = global_handles->Create(*u);
}
std::pair<Handle<Object>*, int> handle_and_id(&h2, 1234);
GlobalHandles::MakeWeak(h2.location(),
reinterpret_cast<void*>(&handle_and_id),
&TestWeakGlobalHandleCallback);
// Scavenge treats weak pointers as normal roots.
heap->CollectGarbage(NEW_SPACE);
CHECK((*h1)->IsString());
CHECK((*h2)->IsHeapNumber());
CHECK(!WeakPointerCleared);
CHECK(!global_handles->IsNearDeath(h2.location()));
CHECK(!global_handles->IsNearDeath(h1.location()));
GlobalHandles::Destroy(h1.location());
GlobalHandles::Destroy(h2.location());
}
TEST(WeakGlobalHandlesMark) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
GlobalHandles* global_handles = isolate->global_handles();
WeakPointerCleared = false;
Handle<Object> h1;
Handle<Object> h2;
{
HandleScope scope(isolate);
Handle<Object> i = factory->NewStringFromStaticChars("fisk");
Handle<Object> u = factory->NewNumber(1.12344);
h1 = global_handles->Create(*i);
h2 = global_handles->Create(*u);
}
// Make sure the objects are promoted.
heap->CollectGarbage(OLD_SPACE);
heap->CollectGarbage(NEW_SPACE);
CHECK(!heap->InNewSpace(*h1) && !heap->InNewSpace(*h2));
std::pair<Handle<Object>*, int> handle_and_id(&h2, 1234);
GlobalHandles::MakeWeak(h2.location(),
reinterpret_cast<void*>(&handle_and_id),
&TestWeakGlobalHandleCallback);
CHECK(!GlobalHandles::IsNearDeath(h1.location()));
CHECK(!GlobalHandles::IsNearDeath(h2.location()));
// Incremental marking potentially marked handles before they turned weak.
heap->CollectAllGarbage();
CHECK((*h1)->IsString());
CHECK(WeakPointerCleared);
CHECK(!GlobalHandles::IsNearDeath(h1.location()));
GlobalHandles::Destroy(h1.location());
}
TEST(DeleteWeakGlobalHandle) {
i::FLAG_stress_compaction = false;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
GlobalHandles* global_handles = isolate->global_handles();
WeakPointerCleared = false;
Handle<Object> h;
{
HandleScope scope(isolate);
Handle<Object> i = factory->NewStringFromStaticChars("fisk");
h = global_handles->Create(*i);
}
std::pair<Handle<Object>*, int> handle_and_id(&h, 1234);
GlobalHandles::MakeWeak(h.location(),
reinterpret_cast<void*>(&handle_and_id),
&TestWeakGlobalHandleCallback);
// Scanvenge does not recognize weak reference.
heap->CollectGarbage(NEW_SPACE);
CHECK(!WeakPointerCleared);
// Mark-compact treats weak reference properly.
heap->CollectGarbage(OLD_SPACE);
CHECK(WeakPointerCleared);
}
TEST(BytecodeArray) {
static const uint8_t kRawBytes[] = {0xc3, 0x7e, 0xa5, 0x5a};
static const int kRawBytesSize = sizeof(kRawBytes);
static const int kFrameSize = 32;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
HandleScope scope(isolate);
// Allocate and initialize BytecodeArray
Handle<BytecodeArray> array =
factory->NewBytecodeArray(kRawBytesSize, kRawBytes, kFrameSize);
CHECK(array->IsBytecodeArray());
CHECK_EQ(array->length(), (int)sizeof(kRawBytes));
CHECK_EQ(array->frame_size(), kFrameSize);
CHECK_LE(array->address(), array->GetFirstBytecodeAddress());
CHECK_GE(array->address() + array->BytecodeArraySize(),
array->GetFirstBytecodeAddress() + array->length());
for (int i = 0; i < kRawBytesSize; i++) {
CHECK_EQ(array->GetFirstBytecodeAddress()[i], kRawBytes[i]);
CHECK_EQ(array->get(i), kRawBytes[i]);
}
// Full garbage collection
heap->CollectAllGarbage();
// BytecodeArray should survive
CHECK_EQ(array->length(), kRawBytesSize);
CHECK_EQ(array->frame_size(), kFrameSize);
for (int i = 0; i < kRawBytesSize; i++) {
CHECK_EQ(array->get(i), kRawBytes[i]);
CHECK_EQ(array->GetFirstBytecodeAddress()[i], kRawBytes[i]);
}
}
static const char* not_so_random_string_table[] = {
"abstract",
"boolean",
"break",
"byte",
"case",
"catch",
"char",
"class",
"const",
"continue",
"debugger",
"default",
"delete",
"do",
"double",
"else",
"enum",
"export",
"extends",
"false",
"final",
"finally",
"float",
"for",
"function",
"goto",
"if",
"implements",
"import",
"in",
"instanceof",
"int",
"interface",
"long",
"native",
"new",
"null",
"package",
"private",
"protected",
"public",
"return",
"short",
"static",
"super",
"switch",
"synchronized",
"this",
"throw",
"throws",
"transient",
"true",
"try",
"typeof",
"var",
"void",
"volatile",
"while",
"with",
0
};
static void CheckInternalizedStrings(const char** strings) {
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
for (const char* string = *strings; *strings != 0; string = *strings++) {
HandleScope scope(isolate);
Handle<String> a =
isolate->factory()->InternalizeUtf8String(CStrVector(string));
// InternalizeUtf8String may return a failure if a GC is needed.
CHECK(a->IsInternalizedString());
Handle<String> b = factory->InternalizeUtf8String(string);
CHECK_EQ(*b, *a);
CHECK(b->IsUtf8EqualTo(CStrVector(string)));
b = isolate->factory()->InternalizeUtf8String(CStrVector(string));
CHECK_EQ(*b, *a);
CHECK(b->IsUtf8EqualTo(CStrVector(string)));
}
}
TEST(StringTable) {
CcTest::InitializeVM();
v8::HandleScope sc(CcTest::isolate());
CheckInternalizedStrings(not_so_random_string_table);
CheckInternalizedStrings(not_so_random_string_table);
}
TEST(FunctionAllocation) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope sc(CcTest::isolate());
Handle<String> name = factory->InternalizeUtf8String("theFunction");
Handle<JSFunction> function = factory->NewFunction(name);
Handle<Smi> twenty_three(Smi::FromInt(23), isolate);
Handle<Smi> twenty_four(Smi::FromInt(24), isolate);
Handle<String> prop_name = factory->InternalizeUtf8String("theSlot");
Handle<JSObject> obj = factory->NewJSObject(function);
JSReceiver::SetProperty(obj, prop_name, twenty_three, SLOPPY).Check();
CHECK_EQ(Smi::FromInt(23),
*Object::GetProperty(obj, prop_name).ToHandleChecked());
// Check that we can add properties to function objects.
JSReceiver::SetProperty(function, prop_name, twenty_four, SLOPPY).Check();
CHECK_EQ(Smi::FromInt(24),
*Object::GetProperty(function, prop_name).ToHandleChecked());
}
TEST(ObjectProperties) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope sc(CcTest::isolate());
Handle<String> object_string(String::cast(CcTest::heap()->Object_string()));
Handle<Object> object = Object::GetProperty(
CcTest::i_isolate()->global_object(), object_string).ToHandleChecked();
Handle<JSFunction> constructor = Handle<JSFunction>::cast(object);
Handle<JSObject> obj = factory->NewJSObject(constructor);
Handle<String> first = factory->InternalizeUtf8String("first");
Handle<String> second = factory->InternalizeUtf8String("second");
Handle<Smi> one(Smi::FromInt(1), isolate);
Handle<Smi> two(Smi::FromInt(2), isolate);
// check for empty
CHECK(Just(false) == JSReceiver::HasOwnProperty(obj, first));
// add first
JSReceiver::SetProperty(obj, first, one, SLOPPY).Check();
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, first));
// delete first
JSReceiver::DeleteProperty(obj, first, SLOPPY).Check();
CHECK(Just(false) == JSReceiver::HasOwnProperty(obj, first));
// add first and then second
JSReceiver::SetProperty(obj, first, one, SLOPPY).Check();
JSReceiver::SetProperty(obj, second, two, SLOPPY).Check();
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, first));
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, second));
// delete first and then second
JSReceiver::DeleteProperty(obj, first, SLOPPY).Check();
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, second));
JSReceiver::DeleteProperty(obj, second, SLOPPY).Check();
CHECK(Just(false) == JSReceiver::HasOwnProperty(obj, first));
CHECK(Just(false) == JSReceiver::HasOwnProperty(obj, second));
// add first and then second
JSReceiver::SetProperty(obj, first, one, SLOPPY).Check();
JSReceiver::SetProperty(obj, second, two, SLOPPY).Check();
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, first));
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, second));
// delete second and then first
JSReceiver::DeleteProperty(obj, second, SLOPPY).Check();
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, first));
JSReceiver::DeleteProperty(obj, first, SLOPPY).Check();
CHECK(Just(false) == JSReceiver::HasOwnProperty(obj, first));
CHECK(Just(false) == JSReceiver::HasOwnProperty(obj, second));
// check string and internalized string match
const char* string1 = "fisk";
Handle<String> s1 = factory->NewStringFromAsciiChecked(string1);
JSReceiver::SetProperty(obj, s1, one, SLOPPY).Check();
Handle<String> s1_string = factory->InternalizeUtf8String(string1);
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, s1_string));
// check internalized string and string match
const char* string2 = "fugl";
Handle<String> s2_string = factory->InternalizeUtf8String(string2);
JSReceiver::SetProperty(obj, s2_string, one, SLOPPY).Check();
Handle<String> s2 = factory->NewStringFromAsciiChecked(string2);
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, s2));
}
TEST(JSObjectMaps) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope sc(CcTest::isolate());
Handle<String> name = factory->InternalizeUtf8String("theFunction");
Handle<JSFunction> function = factory->NewFunction(name);
Handle<String> prop_name = factory->InternalizeUtf8String("theSlot");
Handle<JSObject> obj = factory->NewJSObject(function);
Handle<Map> initial_map(function->initial_map());
// Set a propery
Handle<Smi> twenty_three(Smi::FromInt(23), isolate);
JSReceiver::SetProperty(obj, prop_name, twenty_three, SLOPPY).Check();
CHECK_EQ(Smi::FromInt(23),
*Object::GetProperty(obj, prop_name).ToHandleChecked());
// Check the map has changed
CHECK(*initial_map != obj->map());
}
TEST(JSArray) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope sc(CcTest::isolate());
Handle<String> name = factory->InternalizeUtf8String("Array");
Handle<Object> fun_obj = Object::GetProperty(
CcTest::i_isolate()->global_object(), name).ToHandleChecked();
Handle<JSFunction> function = Handle<JSFunction>::cast(fun_obj);
// Allocate the object.
Handle<Object> element;
Handle<JSObject> object = factory->NewJSObject(function);
Handle<JSArray> array = Handle<JSArray>::cast(object);
// We just initialized the VM, no heap allocation failure yet.
JSArray::Initialize(array, 0);
// Set array length to 0.
JSArray::SetLength(array, 0);
CHECK_EQ(Smi::FromInt(0), array->length());
// Must be in fast mode.
CHECK(array->HasFastSmiOrObjectElements());
// array[length] = name.
JSReceiver::SetElement(isolate, array, 0, name, SLOPPY).Check();
CHECK_EQ(Smi::FromInt(1), array->length());
element = i::Object::GetElement(isolate, array, 0).ToHandleChecked();
CHECK_EQ(*element, *name);
// Set array length with larger than smi value.
JSArray::SetLength(array, static_cast<uint32_t>(Smi::kMaxValue) + 1);
uint32_t int_length = 0;
CHECK(array->length()->ToArrayIndex(&int_length));
CHECK_EQ(static_cast<uint32_t>(Smi::kMaxValue) + 1, int_length);
CHECK(array->HasDictionaryElements()); // Must be in slow mode.
// array[length] = name.
JSReceiver::SetElement(isolate, array, int_length, name, SLOPPY).Check();
uint32_t new_int_length = 0;
CHECK(array->length()->ToArrayIndex(&new_int_length));
CHECK_EQ(static_cast<double>(int_length), new_int_length - 1);
element = Object::GetElement(isolate, array, int_length).ToHandleChecked();
CHECK_EQ(*element, *name);
element = Object::GetElement(isolate, array, 0).ToHandleChecked();
CHECK_EQ(*element, *name);
}
TEST(JSObjectCopy) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope sc(CcTest::isolate());
Handle<String> object_string(String::cast(CcTest::heap()->Object_string()));
Handle<Object> object = Object::GetProperty(
CcTest::i_isolate()->global_object(), object_string).ToHandleChecked();
Handle<JSFunction> constructor = Handle<JSFunction>::cast(object);
Handle<JSObject> obj = factory->NewJSObject(constructor);
Handle<String> first = factory->InternalizeUtf8String("first");
Handle<String> second = factory->InternalizeUtf8String("second");
Handle<Smi> one(Smi::FromInt(1), isolate);
Handle<Smi> two(Smi::FromInt(2), isolate);
JSReceiver::SetProperty(obj, first, one, SLOPPY).Check();
JSReceiver::SetProperty(obj, second, two, SLOPPY).Check();
JSReceiver::SetElement(isolate, obj, 0, first, SLOPPY).Check();
JSReceiver::SetElement(isolate, obj, 1, second, SLOPPY).Check();
// Make the clone.
Handle<Object> value1, value2;
Handle<JSObject> clone = factory->CopyJSObject(obj);
CHECK(!clone.is_identical_to(obj));
value1 = Object::GetElement(isolate, obj, 0).ToHandleChecked();
value2 = Object::GetElement(isolate, clone, 0).ToHandleChecked();
CHECK_EQ(*value1, *value2);
value1 = Object::GetElement(isolate, obj, 1).ToHandleChecked();
value2 = Object::GetElement(isolate, clone, 1).ToHandleChecked();
CHECK_EQ(*value1, *value2);
value1 = Object::GetProperty(obj, first).ToHandleChecked();
value2 = Object::GetProperty(clone, first).ToHandleChecked();
CHECK_EQ(*value1, *value2);
value1 = Object::GetProperty(obj, second).ToHandleChecked();
value2 = Object::GetProperty(clone, second).ToHandleChecked();
CHECK_EQ(*value1, *value2);
// Flip the values.
JSReceiver::SetProperty(clone, first, two, SLOPPY).Check();
JSReceiver::SetProperty(clone, second, one, SLOPPY).Check();
JSReceiver::SetElement(isolate, clone, 0, second, SLOPPY).Check();
JSReceiver::SetElement(isolate, clone, 1, first, SLOPPY).Check();
value1 = Object::GetElement(isolate, obj, 1).ToHandleChecked();
value2 = Object::GetElement(isolate, clone, 0).ToHandleChecked();
CHECK_EQ(*value1, *value2);
value1 = Object::GetElement(isolate, obj, 0).ToHandleChecked();
value2 = Object::GetElement(isolate, clone, 1).ToHandleChecked();
CHECK_EQ(*value1, *value2);
value1 = Object::GetProperty(obj, second).ToHandleChecked();
value2 = Object::GetProperty(clone, first).ToHandleChecked();
CHECK_EQ(*value1, *value2);
value1 = Object::GetProperty(obj, first).ToHandleChecked();
value2 = Object::GetProperty(clone, second).ToHandleChecked();
CHECK_EQ(*value1, *value2);
}
TEST(StringAllocation) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
const unsigned char chars[] = { 0xe5, 0xa4, 0xa7 };
for (int length = 0; length < 100; length++) {
v8::HandleScope scope(CcTest::isolate());
char* non_one_byte = NewArray<char>(3 * length + 1);
char* one_byte = NewArray<char>(length + 1);
non_one_byte[3 * length] = 0;
one_byte[length] = 0;
for (int i = 0; i < length; i++) {
one_byte[i] = 'a';
non_one_byte[3 * i] = chars[0];
non_one_byte[3 * i + 1] = chars[1];
non_one_byte[3 * i + 2] = chars[2];
}
Handle<String> non_one_byte_sym = factory->InternalizeUtf8String(
Vector<const char>(non_one_byte, 3 * length));
CHECK_EQ(length, non_one_byte_sym->length());
Handle<String> one_byte_sym =
factory->InternalizeOneByteString(OneByteVector(one_byte, length));
CHECK_EQ(length, one_byte_sym->length());
Handle<String> non_one_byte_str =
factory->NewStringFromUtf8(Vector<const char>(non_one_byte, 3 * length))
.ToHandleChecked();
non_one_byte_str->Hash();
CHECK_EQ(length, non_one_byte_str->length());
Handle<String> one_byte_str =
factory->NewStringFromUtf8(Vector<const char>(one_byte, length))
.ToHandleChecked();
one_byte_str->Hash();
CHECK_EQ(length, one_byte_str->length());
DeleteArray(non_one_byte);
DeleteArray(one_byte);
}
}
static int ObjectsFoundInHeap(Heap* heap, Handle<Object> objs[], int size) {
// Count the number of objects found in the heap.
int found_count = 0;
HeapIterator iterator(heap);
for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) {
for (int i = 0; i < size; i++) {
if (*objs[i] == obj) {
found_count++;
}
}
}
return found_count;
}
TEST(Iteration) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
// Array of objects to scan haep for.
const int objs_count = 6;
Handle<Object> objs[objs_count];
int next_objs_index = 0;
// Allocate a JS array to OLD_SPACE and NEW_SPACE
objs[next_objs_index++] = factory->NewJSArray(10);
objs[next_objs_index++] =
factory->NewJSArray(10, FAST_HOLEY_ELEMENTS, Strength::WEAK, TENURED);
// Allocate a small string to OLD_DATA_SPACE and NEW_SPACE
objs[next_objs_index++] = factory->NewStringFromStaticChars("abcdefghij");
objs[next_objs_index++] =
factory->NewStringFromStaticChars("abcdefghij", TENURED);
// Allocate a large string (for large object space).
int large_size = Page::kMaxRegularHeapObjectSize + 1;
char* str = new char[large_size];
for (int i = 0; i < large_size - 1; ++i) str[i] = 'a';
str[large_size - 1] = '\0';
objs[next_objs_index++] = factory->NewStringFromAsciiChecked(str, TENURED);
delete[] str;
// Add a Map object to look for.
objs[next_objs_index++] = Handle<Map>(HeapObject::cast(*objs[0])->map());
CHECK_EQ(objs_count, next_objs_index);
CHECK_EQ(objs_count, ObjectsFoundInHeap(CcTest::heap(), objs, objs_count));
}
static int LenFromSize(int size) {
return (size - FixedArray::kHeaderSize) / kPointerSize;
}
TEST(Regression39128) {
// Test case for crbug.com/39128.
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
TestHeap* heap = CcTest::test_heap();
// Increase the chance of 'bump-the-pointer' allocation in old space.
heap->CollectAllGarbage();
v8::HandleScope scope(CcTest::isolate());
// The plan: create JSObject which references objects in new space.
// Then clone this object (forcing it to go into old space) and check
// that region dirty marks are updated correctly.
// Step 1: prepare a map for the object. We add 1 inobject property to it.
// Create a map with single inobject property.
Handle<Map> my_map = Map::Create(CcTest::i_isolate(), 1);
int n_properties = my_map->GetInObjectProperties();
CHECK_GT(n_properties, 0);
int object_size = my_map->instance_size();
// Step 2: allocate a lot of objects so to almost fill new space: we need
// just enough room to allocate JSObject and thus fill the newspace.
int allocation_amount = Min(FixedArray::kMaxSize,
Page::kMaxRegularHeapObjectSize + kPointerSize);
int allocation_len = LenFromSize(allocation_amount);
NewSpace* new_space = heap->new_space();
Address* top_addr = new_space->allocation_top_address();
Address* limit_addr = new_space->allocation_limit_address();
while ((*limit_addr - *top_addr) > allocation_amount) {
CHECK(!heap->always_allocate());
Object* array = heap->AllocateFixedArray(allocation_len).ToObjectChecked();
CHECK(new_space->Contains(array));
}
// Step 3: now allocate fixed array and JSObject to fill the whole new space.
int to_fill = static_cast<int>(*limit_addr - *top_addr - object_size);
int fixed_array_len = LenFromSize(to_fill);
CHECK(fixed_array_len < FixedArray::kMaxLength);
CHECK(!heap->always_allocate());
Object* array = heap->AllocateFixedArray(fixed_array_len).ToObjectChecked();
CHECK(new_space->Contains(array));
Object* object = heap->AllocateJSObjectFromMap(*my_map).ToObjectChecked();
CHECK(new_space->Contains(object));
JSObject* jsobject = JSObject::cast(object);
CHECK_EQ(0, FixedArray::cast(jsobject->elements())->length());
CHECK_EQ(0, jsobject->properties()->length());
// Create a reference to object in new space in jsobject.
FieldIndex index = FieldIndex::ForInObjectOffset(
JSObject::kHeaderSize - kPointerSize);
jsobject->FastPropertyAtPut(index, array);
CHECK_EQ(0, static_cast<int>(*limit_addr - *top_addr));
// Step 4: clone jsobject, but force always allocate first to create a clone
// in old pointer space.
Address old_space_top = heap->old_space()->top();
AlwaysAllocateScope aa_scope(isolate);
Object* clone_obj = heap->CopyJSObject(jsobject).ToObjectChecked();
JSObject* clone = JSObject::cast(clone_obj);
if (clone->address() != old_space_top) {
// Alas, got allocated from free list, we cannot do checks.
return;
}
CHECK(heap->old_space()->Contains(clone->address()));
}
UNINITIALIZED_TEST(TestCodeFlushing) {
// If we do not flush code this test is invalid.
if (!FLAG_flush_code) return;
i::FLAG_allow_natives_syntax = true;
i::FLAG_optimize_for_size = false;
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(create_params);
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
isolate->Enter();
Factory* factory = i_isolate->factory();
{
v8::HandleScope scope(isolate);
v8::Context::New(isolate)->Enter();
const char* source =
"function foo() {"
" var x = 42;"
" var y = 42;"
" var z = x + y;"
"};"
"foo()";
Handle<String> foo_name = factory->InternalizeUtf8String("foo");
// This compile will add the code to the compilation cache.
{
v8::HandleScope scope(isolate);
CompileRun(source);
}
// Check function is compiled.
Handle<Object> func_value = Object::GetProperty(i_isolate->global_object(),
foo_name).ToHandleChecked();
CHECK(func_value->IsJSFunction());
Handle<JSFunction> function = Handle<JSFunction>::cast(func_value);
CHECK(function->shared()->is_compiled());
// The code will survive at least two GCs.
i_isolate->heap()->CollectAllGarbage();
i_isolate->heap()->CollectAllGarbage();
CHECK(function->shared()->is_compiled());
// Simulate several GCs that use full marking.
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
i_isolate->heap()->CollectAllGarbage();
}
// foo should no longer be in the compilation cache
CHECK(!function->shared()->is_compiled() || function->IsOptimized());
CHECK(!function->is_compiled() || function->IsOptimized());
// Call foo to get it recompiled.
CompileRun("foo()");
CHECK(function->shared()->is_compiled());
CHECK(function->is_compiled());
}
isolate->Exit();
isolate->Dispose();
}
TEST(TestCodeFlushingPreAged) {
// If we do not flush code this test is invalid.
if (!FLAG_flush_code) return;
i::FLAG_allow_natives_syntax = true;
i::FLAG_optimize_for_size = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
const char* source = "function foo() {"
" var x = 42;"
" var y = 42;"
" var z = x + y;"
"};"
"foo()";
Handle<String> foo_name = factory->InternalizeUtf8String("foo");
// Compile foo, but don't run it.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun(source);
}
// Check function is compiled.
Handle<Object> func_value =
Object::GetProperty(isolate->global_object(), foo_name).ToHandleChecked();
CHECK(func_value->IsJSFunction());
Handle<JSFunction> function = Handle<JSFunction>::cast(func_value);
CHECK(function->shared()->is_compiled());
// The code has been run so will survive at least one GC.
CcTest::heap()->CollectAllGarbage();
CHECK(function->shared()->is_compiled());
// The code was only run once, so it should be pre-aged and collected on the
// next GC.
CcTest::heap()->CollectAllGarbage();
CHECK(!function->shared()->is_compiled() || function->IsOptimized());
// Execute the function again twice, and ensure it is reset to the young age.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun("foo();"
"foo();");
}
// The code will survive at least two GC now that it is young again.
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CHECK(function->shared()->is_compiled());
// Simulate several GCs that use full marking.
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
CcTest::heap()->CollectAllGarbage();
}
// foo should no longer be in the compilation cache
CHECK(!function->shared()->is_compiled() || function->IsOptimized());
CHECK(!function->is_compiled() || function->IsOptimized());
// Call foo to get it recompiled.
CompileRun("foo()");
CHECK(function->shared()->is_compiled());
CHECK(function->is_compiled());
}
TEST(TestCodeFlushingIncremental) {
// If we do not flush code this test is invalid.
if (!FLAG_flush_code) return;
i::FLAG_allow_natives_syntax = true;
i::FLAG_optimize_for_size = false;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
const char* source = "function foo() {"
" var x = 42;"
" var y = 42;"
" var z = x + y;"
"};"
"foo()";
Handle<String> foo_name = factory->InternalizeUtf8String("foo");
// This compile will add the code to the compilation cache.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun(source);
}
// Check function is compiled.
Handle<Object> func_value =
Object::GetProperty(isolate->global_object(), foo_name).ToHandleChecked();
CHECK(func_value->IsJSFunction());
Handle<JSFunction> function = Handle<JSFunction>::cast(func_value);
CHECK(function->shared()->is_compiled());
// The code will survive at least two GCs.
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CHECK(function->shared()->is_compiled());
// Simulate several GCs that use incremental marking.
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
SimulateIncrementalMarking(CcTest::heap());
CcTest::heap()->CollectAllGarbage();
}
CHECK(!function->shared()->is_compiled() || function->IsOptimized());
CHECK(!function->is_compiled() || function->IsOptimized());
// This compile will compile the function again.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun("foo();");
}
// Simulate several GCs that use incremental marking but make sure
// the loop breaks once the function is enqueued as a candidate.
for (int i = 0; i < kAgingThreshold; i++) {
SimulateIncrementalMarking(CcTest::heap());
if (!function->next_function_link()->IsUndefined()) break;
CcTest::heap()->CollectAllGarbage();
}
// Force optimization while incremental marking is active and while
// the function is enqueued as a candidate.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun("%OptimizeFunctionOnNextCall(foo); foo();");
}
// Simulate one final GC to make sure the candidate queue is sane.
CcTest::heap()->CollectAllGarbage();
CHECK(function->shared()->is_compiled() || !function->IsOptimized());
CHECK(function->is_compiled() || !function->IsOptimized());
}
TEST(TestCodeFlushingIncrementalScavenge) {
// If we do not flush code this test is invalid.
if (!FLAG_flush_code) return;
i::FLAG_allow_natives_syntax = true;
i::FLAG_optimize_for_size = false;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
const char* source = "var foo = function() {"
" var x = 42;"
" var y = 42;"
" var z = x + y;"
"};"
"foo();"
"var bar = function() {"
" var x = 23;"
"};"
"bar();";
Handle<String> foo_name = factory->InternalizeUtf8String("foo");
Handle<String> bar_name = factory->InternalizeUtf8String("bar");
// Perfrom one initial GC to enable code flushing.
CcTest::heap()->CollectAllGarbage();
// This compile will add the code to the compilation cache.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun(source);
}
// Check functions are compiled.
Handle<Object> func_value =
Object::GetProperty(isolate->global_object(), foo_name).ToHandleChecked();
CHECK(func_value->IsJSFunction());
Handle<JSFunction> function = Handle<JSFunction>::cast(func_value);
CHECK(function->shared()->is_compiled());
Handle<Object> func_value2 =
Object::GetProperty(isolate->global_object(), bar_name).ToHandleChecked();
CHECK(func_value2->IsJSFunction());
Handle<JSFunction> function2 = Handle<JSFunction>::cast(func_value2);
CHECK(function2->shared()->is_compiled());
// Clear references to functions so that one of them can die.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun("foo = 0; bar = 0;");
}
// Bump the code age so that flushing is triggered while the function
// object is still located in new-space.
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
function->shared()->code()->MakeOlder(static_cast<MarkingParity>(i % 2));
function2->shared()->code()->MakeOlder(static_cast<MarkingParity>(i % 2));
}
// Simulate incremental marking so that the functions are enqueued as
// code flushing candidates. Then kill one of the functions. Finally
// perform a scavenge while incremental marking is still running.
SimulateIncrementalMarking(CcTest::heap());
*function2.location() = NULL;
CcTest::heap()->CollectGarbage(NEW_SPACE, "test scavenge while marking");
// Simulate one final GC to make sure the candidate queue is sane.
CcTest::heap()->CollectAllGarbage();
CHECK(!function->shared()->is_compiled() || function->IsOptimized());
CHECK(!function->is_compiled() || function->IsOptimized());
}
TEST(TestCodeFlushingIncrementalAbort) {
// If we do not flush code this test is invalid.
if (!FLAG_flush_code) return;
i::FLAG_allow_natives_syntax = true;
i::FLAG_optimize_for_size = false;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
Heap* heap = isolate->heap();
v8::HandleScope scope(CcTest::isolate());
const char* source = "function foo() {"
" var x = 42;"
" var y = 42;"
" var z = x + y;"
"};"
"foo()";
Handle<String> foo_name = factory->InternalizeUtf8String("foo");
// This compile will add the code to the compilation cache.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun(source);
}
// Check function is compiled.
Handle<Object> func_value =
Object::GetProperty(isolate->global_object(), foo_name).ToHandleChecked();
CHECK(func_value->IsJSFunction());
Handle<JSFunction> function = Handle<JSFunction>::cast(func_value);
CHECK(function->shared()->is_compiled());
// The code will survive at least two GCs.
heap->CollectAllGarbage();
heap->CollectAllGarbage();
CHECK(function->shared()->is_compiled());
// Bump the code age so that flushing is triggered.
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
function->shared()->code()->MakeOlder(static_cast<MarkingParity>(i % 2));
}
// Simulate incremental marking so that the function is enqueued as
// code flushing candidate.
SimulateIncrementalMarking(heap);
// Enable the debugger and add a breakpoint while incremental marking
// is running so that incremental marking aborts and code flushing is
// disabled.
int position = 0;
Handle<Object> breakpoint_object(Smi::FromInt(0), isolate);
EnableDebugger();
isolate->debug()->SetBreakPoint(function, breakpoint_object, &position);
isolate->debug()->ClearAllBreakPoints();
DisableDebugger();
// Force optimization now that code flushing is disabled.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun("%OptimizeFunctionOnNextCall(foo); foo();");
}
// Simulate one final GC to make sure the candidate queue is sane.
heap->CollectAllGarbage();
CHECK(function->shared()->is_compiled() || !function->IsOptimized());
CHECK(function->is_compiled() || !function->IsOptimized());
}
TEST(CompilationCacheCachingBehavior) {
// If we do not flush code, or have the compilation cache turned off, this
// test is invalid.
if (!FLAG_flush_code || !FLAG_compilation_cache) {
return;
}
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
Heap* heap = isolate->heap();
CompilationCache* compilation_cache = isolate->compilation_cache();
LanguageMode language_mode =
construct_language_mode(FLAG_use_strict, FLAG_use_strong);
v8::HandleScope scope(CcTest::isolate());
const char* raw_source =
"function foo() {"
" var x = 42;"
" var y = 42;"
" var z = x + y;"
"};"
"foo()";
Handle<String> source = factory->InternalizeUtf8String(raw_source);
Handle<Context> native_context = isolate->native_context();
{
v8::HandleScope scope(CcTest::isolate());
CompileRun(raw_source);
}
// On first compilation, only a hash is inserted in the code cache. We can't
// find that value.
MaybeHandle<SharedFunctionInfo> info = compilation_cache->LookupScript(
source, Handle<Object>(), 0, 0,
v8::ScriptOriginOptions(false, true, false), native_context,
language_mode);
CHECK(info.is_null());
{
v8::HandleScope scope(CcTest::isolate());
CompileRun(raw_source);
}
// On second compilation, the hash is replaced by a real cache entry mapping
// the source to the shared function info containing the code.
info = compilation_cache->LookupScript(
source, Handle<Object>(), 0, 0,
v8::ScriptOriginOptions(false, true, false), native_context,
language_mode);
CHECK(!info.is_null());
heap->CollectAllGarbage();
// On second compilation, the hash is replaced by a real cache entry mapping
// the source to the shared function info containing the code.
info = compilation_cache->LookupScript(
source, Handle<Object>(), 0, 0,
v8::ScriptOriginOptions(false, true, false), native_context,
language_mode);
CHECK(!info.is_null());
while (!info.ToHandleChecked()->code()->IsOld()) {
info.ToHandleChecked()->code()->MakeOlder(NO_MARKING_PARITY);
}
heap->CollectAllGarbage();
// Ensure code aging cleared the entry from the cache.
info = compilation_cache->LookupScript(
source, Handle<Object>(), 0, 0,
v8::ScriptOriginOptions(false, true, false), native_context,
language_mode);
CHECK(info.is_null());
{
v8::HandleScope scope(CcTest::isolate());
CompileRun(raw_source);
}
// On first compilation, only a hash is inserted in the code cache. We can't
// find that value.
info = compilation_cache->LookupScript(
source, Handle<Object>(), 0, 0,
v8::ScriptOriginOptions(false, true, false), native_context,
language_mode);
CHECK(info.is_null());
for (int i = 0; i < CompilationCacheTable::kHashGenerations; i++) {
compilation_cache->MarkCompactPrologue();
}
{
v8::HandleScope scope(CcTest::isolate());
CompileRun(raw_source);
}
// If we aged the cache before caching the script, ensure that we didn't cache
// on next compilation.
info = compilation_cache->LookupScript(
source, Handle<Object>(), 0, 0,
v8::ScriptOriginOptions(false, true, false), native_context,
language_mode);
CHECK(info.is_null());
}
static void OptimizeEmptyFunction(const char* name) {
HandleScope scope(CcTest::i_isolate());
EmbeddedVector<char, 256> source;
SNPrintF(source,
"function %s() { return 0; }"
"%s(); %s();"
"%%OptimizeFunctionOnNextCall(%s);"
"%s();",
name, name, name, name, name);
CompileRun(source.start());
}
// Count the number of native contexts in the weak list of native contexts.
int CountNativeContexts() {
int count = 0;
Object* object = CcTest::heap()->native_contexts_list();
while (!object->IsUndefined()) {
count++;
object = Context::cast(object)->get(Context::NEXT_CONTEXT_LINK);
}
// Subtract one to compensate for the code stub context that is always present
return count - 1;
}
// Count the number of user functions in the weak list of optimized
// functions attached to a native context.
static int CountOptimizedUserFunctions(v8::Handle<v8::Context> context) {
int count = 0;
Handle<Context> icontext = v8::Utils::OpenHandle(*context);
Object* object = icontext->get(Context::OPTIMIZED_FUNCTIONS_LIST);
while (object->IsJSFunction() && !JSFunction::cast(object)->IsBuiltin()) {
count++;
object = JSFunction::cast(object)->next_function_link();
}
return count;
}
TEST(TestInternalWeakLists) {
FLAG_always_opt = false;
FLAG_allow_natives_syntax = true;
v8::V8::Initialize();
// Some flags turn Scavenge collections into Mark-sweep collections
// and hence are incompatible with this test case.
if (FLAG_gc_global || FLAG_stress_compaction) return;
FLAG_retain_maps_for_n_gc = 0;
static const int kNumTestContexts = 10;
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
HandleScope scope(isolate);
v8::Handle<v8::Context> ctx[kNumTestContexts];
if (!isolate->use_crankshaft()) return;
CHECK_EQ(0, CountNativeContexts());
// Create a number of global contests which gets linked together.
for (int i = 0; i < kNumTestContexts; i++) {
ctx[i] = v8::Context::New(CcTest::isolate());
// Collect garbage that might have been created by one of the
// installed extensions.
isolate->compilation_cache()->Clear();
heap->CollectAllGarbage();
CHECK_EQ(i + 1, CountNativeContexts());
ctx[i]->Enter();
// Create a handle scope so no function objects get stuck in the outer
// handle scope.
HandleScope scope(isolate);
CHECK_EQ(0, CountOptimizedUserFunctions(ctx[i]));
OptimizeEmptyFunction("f1");
CHECK_EQ(1, CountOptimizedUserFunctions(ctx[i]));
OptimizeEmptyFunction("f2");
CHECK_EQ(2, CountOptimizedUserFunctions(ctx[i]));
OptimizeEmptyFunction("f3");
CHECK_EQ(3, CountOptimizedUserFunctions(ctx[i]));
OptimizeEmptyFunction("f4");
CHECK_EQ(4, CountOptimizedUserFunctions(ctx[i]));
OptimizeEmptyFunction("f5");
CHECK_EQ(5, CountOptimizedUserFunctions(ctx[i]));
// Remove function f1, and
CompileRun("f1=null");
// Scavenge treats these references as strong.
for (int j = 0; j < 10; j++) {
CcTest::heap()->CollectGarbage(NEW_SPACE);
CHECK_EQ(5, CountOptimizedUserFunctions(ctx[i]));
}
// Mark compact handles the weak references.
isolate->compilation_cache()->Clear();
heap->CollectAllGarbage();
CHECK_EQ(4, CountOptimizedUserFunctions(ctx[i]));
// Get rid of f3 and f5 in the same way.
CompileRun("f3=null");
for (int j = 0; j < 10; j++) {
CcTest::heap()->CollectGarbage(NEW_SPACE);
CHECK_EQ(4, CountOptimizedUserFunctions(ctx[i]));
}
CcTest::heap()->CollectAllGarbage();
CHECK_EQ(3, CountOptimizedUserFunctions(ctx[i]));
CompileRun("f5=null");
for (int j = 0; j < 10; j++) {
CcTest::heap()->CollectGarbage(NEW_SPACE);
CHECK_EQ(3, CountOptimizedUserFunctions(ctx[i]));
}
CcTest::heap()->CollectAllGarbage();
CHECK_EQ(2, CountOptimizedUserFunctions(ctx[i]));
ctx[i]->Exit();
}
// Force compilation cache cleanup.
CcTest::heap()->NotifyContextDisposed(true);
CcTest::heap()->CollectAllGarbage();
// Dispose the native contexts one by one.
for (int i = 0; i < kNumTestContexts; i++) {
// TODO(dcarney): is there a better way to do this?
i::Object** unsafe = reinterpret_cast<i::Object**>(*ctx[i]);
*unsafe = CcTest::heap()->undefined_value();
ctx[i].Clear();
// Scavenge treats these references as strong.
for (int j = 0; j < 10; j++) {
CcTest::heap()->CollectGarbage(i::NEW_SPACE);
CHECK_EQ(kNumTestContexts - i, CountNativeContexts());
}
// Mark compact handles the weak references.
CcTest::heap()->CollectAllGarbage();
CHECK_EQ(kNumTestContexts - i - 1, CountNativeContexts());
}
CHECK_EQ(0, CountNativeContexts());
}
// Count the number of native contexts in the weak list of native contexts
// causing a GC after the specified number of elements.
static int CountNativeContextsWithGC(Isolate* isolate, int n) {
Heap* heap = isolate->heap();
int count = 0;
Handle<Object> object(heap->native_contexts_list(), isolate);
while (!object->IsUndefined()) {
count++;
if (count == n) heap->CollectAllGarbage();
object =
Handle<Object>(Context::cast(*object)->get(Context::NEXT_CONTEXT_LINK),
isolate);
}
// Subtract one to compensate for the code stub context that is always present
return count - 1;
}
// Count the number of user functions in the weak list of optimized
// functions attached to a native context causing a GC after the
// specified number of elements.
static int CountOptimizedUserFunctionsWithGC(v8::Handle<v8::Context> context,
int n) {
int count = 0;
Handle<Context> icontext = v8::Utils::OpenHandle(*context);
Isolate* isolate = icontext->GetIsolate();
Handle<Object> object(icontext->get(Context::OPTIMIZED_FUNCTIONS_LIST),
isolate);
while (object->IsJSFunction() &&
!Handle<JSFunction>::cast(object)->IsBuiltin()) {
count++;
if (count == n) isolate->heap()->CollectAllGarbage();
object = Handle<Object>(
Object::cast(JSFunction::cast(*object)->next_function_link()),
isolate);
}
return count;
}
TEST(TestInternalWeakListsTraverseWithGC) {
FLAG_always_opt = false;
FLAG_allow_natives_syntax = true;
v8::V8::Initialize();
static const int kNumTestContexts = 10;
Isolate* isolate = CcTest::i_isolate();
HandleScope scope(isolate);
v8::Handle<v8::Context> ctx[kNumTestContexts];
if (!isolate->use_crankshaft()) return;
CHECK_EQ(0, CountNativeContexts());
// Create an number of contexts and check the length of the weak list both
// with and without GCs while iterating the list.
for (int i = 0; i < kNumTestContexts; i++) {
ctx[i] = v8::Context::New(CcTest::isolate());
CHECK_EQ(i + 1, CountNativeContexts());
CHECK_EQ(i + 1, CountNativeContextsWithGC(isolate, i / 2 + 1));
}
ctx[0]->Enter();
// Compile a number of functions the length of the weak list of optimized
// functions both with and without GCs while iterating the list.
CHECK_EQ(0, CountOptimizedUserFunctions(ctx[0]));
OptimizeEmptyFunction("f1");
CHECK_EQ(1, CountOptimizedUserFunctions(ctx[0]));
CHECK_EQ(1, CountOptimizedUserFunctionsWithGC(ctx[0], 1));
OptimizeEmptyFunction("f2");
CHECK_EQ(2, CountOptimizedUserFunctions(ctx[0]));
CHECK_EQ(2, CountOptimizedUserFunctionsWithGC(ctx[0], 1));
OptimizeEmptyFunction("f3");
CHECK_EQ(3, CountOptimizedUserFunctions(ctx[0]));
CHECK_EQ(3, CountOptimizedUserFunctionsWithGC(ctx[0], 1));
OptimizeEmptyFunction("f4");
CHECK_EQ(4, CountOptimizedUserFunctions(ctx[0]));
CHECK_EQ(4, CountOptimizedUserFunctionsWithGC(ctx[0], 2));
OptimizeEmptyFunction("f5");
CHECK_EQ(5, CountOptimizedUserFunctions(ctx[0]));
CHECK_EQ(5, CountOptimizedUserFunctionsWithGC(ctx[0], 4));
ctx[0]->Exit();
}
TEST(TestSizeOfRegExpCode) {
if (!FLAG_regexp_optimization) return;
v8::V8::Initialize();
Isolate* isolate = CcTest::i_isolate();
HandleScope scope(isolate);
LocalContext context;
// Adjust source below and this check to match
// RegExpImple::kRegExpTooLargeToOptimize.
DCHECK_EQ(i::RegExpImpl::kRegExpTooLargeToOptimize, 20 * KB);
// Compile a regexp that is much larger if we are using regexp optimizations.
CompileRun(
"var reg_exp_source = '(?:a|bc|def|ghij|klmno|pqrstu)';"
"var half_size_reg_exp;"
"while (reg_exp_source.length < 20 * 1024) {"
" half_size_reg_exp = reg_exp_source;"
" reg_exp_source = reg_exp_source + reg_exp_source;"
"}"
// Flatten string.
"reg_exp_source.match(/f/);");
// Get initial heap size after several full GCs, which will stabilize
// the heap size and return with sweeping finished completely.
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
MarkCompactCollector* collector = CcTest::heap()->mark_compact_collector();
if (collector->sweeping_in_progress()) {
collector->EnsureSweepingCompleted();
}
int initial_size = static_cast<int>(CcTest::heap()->SizeOfObjects());
CompileRun("'foo'.match(reg_exp_source);");
CcTest::heap()->CollectAllGarbage();
int size_with_regexp = static_cast<int>(CcTest::heap()->SizeOfObjects());
CompileRun("'foo'.match(half_size_reg_exp);");
CcTest::heap()->CollectAllGarbage();
int size_with_optimized_regexp =
static_cast<int>(CcTest::heap()->SizeOfObjects());
int size_of_regexp_code = size_with_regexp - initial_size;
// On some platforms the debug-code flag causes huge amounts of regexp code
// to be emitted, breaking this test.
if (!FLAG_debug_code) {
CHECK_LE(size_of_regexp_code, 1 * MB);
}
// Small regexp is half the size, but compiles to more than twice the code
// due to the optimization steps.
CHECK_GE(size_with_optimized_regexp,
size_with_regexp + size_of_regexp_code * 2);
}
TEST(TestSizeOfObjects) {
v8::V8::Initialize();
// Get initial heap size after several full GCs, which will stabilize
// the heap size and return with sweeping finished completely.
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
MarkCompactCollector* collector = CcTest::heap()->mark_compact_collector();
if (collector->sweeping_in_progress()) {
collector->EnsureSweepingCompleted();
}
int initial_size = static_cast<int>(CcTest::heap()->SizeOfObjects());
{
// Allocate objects on several different old-space pages so that
// concurrent sweeper threads will be busy sweeping the old space on
// subsequent GC runs.
AlwaysAllocateScope always_allocate(CcTest::i_isolate());
int filler_size = static_cast<int>(FixedArray::SizeFor(8192));
for (int i = 1; i <= 100; i++) {
CcTest::test_heap()->AllocateFixedArray(8192, TENURED).ToObjectChecked();
CHECK_EQ(initial_size + i * filler_size,
static_cast<int>(CcTest::heap()->SizeOfObjects()));
}
}
// The heap size should go back to initial size after a full GC, even
// though sweeping didn't finish yet.
CcTest::heap()->CollectAllGarbage();
// Normally sweeping would not be complete here, but no guarantees.
CHECK_EQ(initial_size, static_cast<int>(CcTest::heap()->SizeOfObjects()));
// Waiting for sweeper threads should not change heap size.
if (collector->sweeping_in_progress()) {
collector->EnsureSweepingCompleted();
}
CHECK_EQ(initial_size, static_cast<int>(CcTest::heap()->SizeOfObjects()));
}
TEST(TestAlignmentCalculations) {
// Maximum fill amounts are consistent.
int maximum_double_misalignment = kDoubleSize - kPointerSize;
int maximum_simd128_misalignment = kSimd128Size - kPointerSize;
int max_word_fill = Heap::GetMaximumFillToAlign(kWordAligned);
CHECK_EQ(0, max_word_fill);
int max_double_fill = Heap::GetMaximumFillToAlign(kDoubleAligned);
CHECK_EQ(maximum_double_misalignment, max_double_fill);
int max_double_unaligned_fill = Heap::GetMaximumFillToAlign(kDoubleUnaligned);
CHECK_EQ(maximum_double_misalignment, max_double_unaligned_fill);
int max_simd128_unaligned_fill =
Heap::GetMaximumFillToAlign(kSimd128Unaligned);
CHECK_EQ(maximum_simd128_misalignment, max_simd128_unaligned_fill);
Address base = static_cast<Address>(NULL);
int fill = 0;
// Word alignment never requires fill.
fill = Heap::GetFillToAlign(base, kWordAligned);
CHECK_EQ(0, fill);
fill = Heap::GetFillToAlign(base + kPointerSize, kWordAligned);
CHECK_EQ(0, fill);
// No fill is required when address is double aligned.
fill = Heap::GetFillToAlign(base, kDoubleAligned);
CHECK_EQ(0, fill);
// Fill is required if address is not double aligned.
fill = Heap::GetFillToAlign(base + kPointerSize, kDoubleAligned);
CHECK_EQ(maximum_double_misalignment, fill);
// kDoubleUnaligned has the opposite fill amounts.
fill = Heap::GetFillToAlign(base, kDoubleUnaligned);
CHECK_EQ(maximum_double_misalignment, fill);
fill = Heap::GetFillToAlign(base + kPointerSize, kDoubleUnaligned);
CHECK_EQ(0, fill);
// 128 bit SIMD types have 2 or 4 possible alignments, depending on platform.
fill = Heap::GetFillToAlign(base, kSimd128Unaligned);
CHECK_EQ((3 * kPointerSize) & kSimd128AlignmentMask, fill);
fill = Heap::GetFillToAlign(base + kPointerSize, kSimd128Unaligned);
CHECK_EQ((2 * kPointerSize) & kSimd128AlignmentMask, fill);
fill = Heap::GetFillToAlign(base + 2 * kPointerSize, kSimd128Unaligned);
CHECK_EQ(kPointerSize, fill);
fill = Heap::GetFillToAlign(base + 3 * kPointerSize, kSimd128Unaligned);
CHECK_EQ(0, fill);
}
static HeapObject* NewSpaceAllocateAligned(int size,
AllocationAlignment alignment) {
Heap* heap = CcTest::heap();
AllocationResult allocation =
heap->new_space()->AllocateRawAligned(size, alignment);
HeapObject* obj = NULL;
allocation.To(&obj);
heap->CreateFillerObjectAt(obj->address(), size);
return obj;
}
// Get new space allocation into the desired alignment.
static Address AlignNewSpace(AllocationAlignment alignment, int offset) {
Address* top_addr = CcTest::heap()->new_space()->allocation_top_address();
int fill = Heap::GetFillToAlign(*top_addr, alignment);
if (fill) {
NewSpaceAllocateAligned(fill + offset, kWordAligned);
}
return *top_addr;
}
TEST(TestAlignedAllocation) {
// Double misalignment is 4 on 32-bit platforms, 0 on 64-bit ones.
const intptr_t double_misalignment = kDoubleSize - kPointerSize;
Address* top_addr = CcTest::heap()->new_space()->allocation_top_address();
Address start;
HeapObject* obj;
HeapObject* filler;
if (double_misalignment) {
// Allocate a pointer sized object that must be double aligned at an
// aligned address.
start = AlignNewSpace(kDoubleAligned, 0);
obj = NewSpaceAllocateAligned(kPointerSize, kDoubleAligned);
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment));
// There is no filler.
CHECK_EQ(kPointerSize, *top_addr - start);
// Allocate a second pointer sized object that must be double aligned at an
// unaligned address.
start = AlignNewSpace(kDoubleAligned, kPointerSize);
obj = NewSpaceAllocateAligned(kPointerSize, kDoubleAligned);
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment));
// There is a filler object before the object.
filler = HeapObject::FromAddress(start);
CHECK(obj != filler && filler->IsFiller() &&
filler->Size() == kPointerSize);
CHECK_EQ(kPointerSize + double_misalignment, *top_addr - start);
// Similarly for kDoubleUnaligned.
start = AlignNewSpace(kDoubleUnaligned, 0);
obj = NewSpaceAllocateAligned(kPointerSize, kDoubleUnaligned);
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment, kPointerSize));
CHECK_EQ(kPointerSize, *top_addr - start);
start = AlignNewSpace(kDoubleUnaligned, kPointerSize);
obj = NewSpaceAllocateAligned(kPointerSize, kDoubleUnaligned);
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment, kPointerSize));
// There is a filler object before the object.
filler = HeapObject::FromAddress(start);
CHECK(obj != filler && filler->IsFiller() &&
filler->Size() == kPointerSize);
CHECK_EQ(kPointerSize + double_misalignment, *top_addr - start);
}
// Now test SIMD alignment. There are 2 or 4 possible alignments, depending
// on platform.
start = AlignNewSpace(kSimd128Unaligned, 0);
obj = NewSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There is no filler.
CHECK_EQ(kPointerSize, *top_addr - start);
start = AlignNewSpace(kSimd128Unaligned, kPointerSize);
obj = NewSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There is a filler object before the object.
filler = HeapObject::FromAddress(start);
CHECK(obj != filler && filler->IsFiller() &&
filler->Size() == kSimd128Size - kPointerSize);
CHECK_EQ(kPointerSize + kSimd128Size - kPointerSize, *top_addr - start);
if (double_misalignment) {
// Test the 2 other alignments possible on 32 bit platforms.
start = AlignNewSpace(kSimd128Unaligned, 2 * kPointerSize);
obj = NewSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There is a filler object before the object.
filler = HeapObject::FromAddress(start);
CHECK(obj != filler && filler->IsFiller() &&
filler->Size() == 2 * kPointerSize);
CHECK_EQ(kPointerSize + 2 * kPointerSize, *top_addr - start);
start = AlignNewSpace(kSimd128Unaligned, 3 * kPointerSize);
obj = NewSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There is a filler object before the object.
filler = HeapObject::FromAddress(start);
CHECK(obj != filler && filler->IsFiller() &&
filler->Size() == kPointerSize);
CHECK_EQ(kPointerSize + kPointerSize, *top_addr - start);
}
}
static HeapObject* OldSpaceAllocateAligned(int size,
AllocationAlignment alignment) {
Heap* heap = CcTest::heap();
AllocationResult allocation =
heap->old_space()->AllocateRawAligned(size, alignment);
HeapObject* obj = NULL;
allocation.To(&obj);
heap->CreateFillerObjectAt(obj->address(), size);
return obj;
}
// Get old space allocation into the desired alignment.
static Address AlignOldSpace(AllocationAlignment alignment, int offset) {
Address* top_addr = CcTest::heap()->old_space()->allocation_top_address();
int fill = Heap::GetFillToAlign(*top_addr, alignment);
int allocation = fill + offset;
if (allocation) {
OldSpaceAllocateAligned(allocation, kWordAligned);
}
Address top = *top_addr;
// Now force the remaining allocation onto the free list.
CcTest::heap()->old_space()->EmptyAllocationInfo();
return top;
}
// Test the case where allocation must be done from the free list, so filler
// may precede or follow the object.
TEST(TestAlignedOverAllocation) {
// Double misalignment is 4 on 32-bit platforms, 0 on 64-bit ones.
const intptr_t double_misalignment = kDoubleSize - kPointerSize;
Address start;
HeapObject* obj;
HeapObject* filler1;
HeapObject* filler2;
if (double_misalignment) {
start = AlignOldSpace(kDoubleAligned, 0);
obj = OldSpaceAllocateAligned(kPointerSize, kDoubleAligned);
// The object is aligned, and a filler object is created after.
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment));
filler1 = HeapObject::FromAddress(start + kPointerSize);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kPointerSize);
// Try the opposite alignment case.
start = AlignOldSpace(kDoubleAligned, kPointerSize);
obj = OldSpaceAllocateAligned(kPointerSize, kDoubleAligned);
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment));
filler1 = HeapObject::FromAddress(start);
CHECK(obj != filler1);
CHECK(filler1->IsFiller());
CHECK(filler1->Size() == kPointerSize);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kPointerSize);
// Similarly for kDoubleUnaligned.
start = AlignOldSpace(kDoubleUnaligned, 0);
obj = OldSpaceAllocateAligned(kPointerSize, kDoubleUnaligned);
// The object is aligned, and a filler object is created after.
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment, kPointerSize));
filler1 = HeapObject::FromAddress(start + kPointerSize);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kPointerSize);
// Try the opposite alignment case.
start = AlignOldSpace(kDoubleUnaligned, kPointerSize);
obj = OldSpaceAllocateAligned(kPointerSize, kDoubleUnaligned);
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment, kPointerSize));
filler1 = HeapObject::FromAddress(start);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kPointerSize);
}
// Now test SIMD alignment. There are 2 or 4 possible alignments, depending
// on platform.
start = AlignOldSpace(kSimd128Unaligned, 0);
obj = OldSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There is a filler object after the object.
filler1 = HeapObject::FromAddress(start + kPointerSize);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kSimd128Size - kPointerSize);
start = AlignOldSpace(kSimd128Unaligned, kPointerSize);
obj = OldSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There is a filler object before the object.
filler1 = HeapObject::FromAddress(start);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kSimd128Size - kPointerSize);
if (double_misalignment) {
// Test the 2 other alignments possible on 32 bit platforms.
start = AlignOldSpace(kSimd128Unaligned, 2 * kPointerSize);
obj = OldSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There are filler objects before and after the object.
filler1 = HeapObject::FromAddress(start);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == 2 * kPointerSize);
filler2 = HeapObject::FromAddress(start + 3 * kPointerSize);
CHECK(obj != filler2 && filler2->IsFiller() &&
filler2->Size() == kPointerSize);
start = AlignOldSpace(kSimd128Unaligned, 3 * kPointerSize);
obj = OldSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There are filler objects before and after the object.
filler1 = HeapObject::FromAddress(start);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kPointerSize);
filler2 = HeapObject::FromAddress(start + 2 * kPointerSize);
CHECK(obj != filler2 && filler2->IsFiller() &&
filler2->Size() == 2 * kPointerSize);
}
}
TEST(TestSizeOfObjectsVsHeapIteratorPrecision) {
CcTest::InitializeVM();
HeapIterator iterator(CcTest::heap());
intptr_t size_of_objects_1 = CcTest::heap()->SizeOfObjects();
intptr_t size_of_objects_2 = 0;
for (HeapObject* obj = iterator.next();
obj != NULL;
obj = iterator.next()) {
if (!obj->IsFreeSpace()) {
size_of_objects_2 += obj->Size();
}
}
// Delta must be within 5% of the larger result.
// TODO(gc): Tighten this up by distinguishing between byte
// arrays that are real and those that merely mark free space
// on the heap.
if (size_of_objects_1 > size_of_objects_2) {
intptr_t delta = size_of_objects_1 - size_of_objects_2;
PrintF("Heap::SizeOfObjects: %" V8_PTR_PREFIX "d, "
"Iterator: %" V8_PTR_PREFIX "d, "
"delta: %" V8_PTR_PREFIX "d\n",
size_of_objects_1, size_of_objects_2, delta);
CHECK_GT(size_of_objects_1 / 20, delta);
} else {
intptr_t delta = size_of_objects_2 - size_of_objects_1;
PrintF("Heap::SizeOfObjects: %" V8_PTR_PREFIX "d, "
"Iterator: %" V8_PTR_PREFIX "d, "
"delta: %" V8_PTR_PREFIX "d\n",
size_of_objects_1, size_of_objects_2, delta);
CHECK_GT(size_of_objects_2 / 20, delta);
}
}
static void FillUpNewSpace(NewSpace* new_space) {
// Fill up new space to the point that it is completely full. Make sure
// that the scavenger does not undo the filling.
Heap* heap = new_space->heap();
Isolate* isolate = heap->isolate();
Factory* factory = isolate->factory();
HandleScope scope(isolate);
AlwaysAllocateScope always_allocate(isolate);
intptr_t available = new_space->Capacity() - new_space->Size();
intptr_t number_of_fillers = (available / FixedArray::SizeFor(32)) - 1;
for (intptr_t i = 0; i < number_of_fillers; i++) {
CHECK(heap->InNewSpace(*factory->NewFixedArray(32, NOT_TENURED)));
}
}
TEST(GrowAndShrinkNewSpace) {
CcTest::InitializeVM();
Heap* heap = CcTest::heap();
NewSpace* new_space = heap->new_space();
if (heap->ReservedSemiSpaceSize() == heap->InitialSemiSpaceSize() ||
heap->MaxSemiSpaceSize() == heap->InitialSemiSpaceSize()) {
// The max size cannot exceed the reserved size, since semispaces must be
// always within the reserved space. We can't test new space growing and
// shrinking if the reserved size is the same as the minimum (initial) size.
return;
}
// Explicitly growing should double the space capacity.
intptr_t old_capacity, new_capacity;
old_capacity = new_space->TotalCapacity();
new_space->Grow();
new_capacity = new_space->TotalCapacity();
CHECK(2 * old_capacity == new_capacity);
old_capacity = new_space->TotalCapacity();
FillUpNewSpace(new_space);
new_capacity = new_space->TotalCapacity();
CHECK(old_capacity == new_capacity);
// Explicitly shrinking should not affect space capacity.
old_capacity = new_space->TotalCapacity();
new_space->Shrink();
new_capacity = new_space->TotalCapacity();
CHECK(old_capacity == new_capacity);
// Let the scavenger empty the new space.
heap->CollectGarbage(NEW_SPACE);
CHECK_LE(new_space->Size(), old_capacity);
// Explicitly shrinking should halve the space capacity.
old_capacity = new_space->TotalCapacity();
new_space->Shrink();
new_capacity = new_space->TotalCapacity();
CHECK(old_capacity == 2 * new_capacity);
// Consecutive shrinking should not affect space capacity.
old_capacity = new_space->TotalCapacity();
new_space->Shrink();
new_space->Shrink();
new_space->Shrink();
new_capacity = new_space->TotalCapacity();
CHECK(old_capacity == new_capacity);
}
TEST(CollectingAllAvailableGarbageShrinksNewSpace) {
CcTest::InitializeVM();
Heap* heap = CcTest::heap();
if (heap->ReservedSemiSpaceSize() == heap->InitialSemiSpaceSize() ||
heap->MaxSemiSpaceSize() == heap->InitialSemiSpaceSize()) {
// The max size cannot exceed the reserved size, since semispaces must be
// always within the reserved space. We can't test new space growing and
// shrinking if the reserved size is the same as the minimum (initial) size.
return;
}
v8::HandleScope scope(CcTest::isolate());
NewSpace* new_space = heap->new_space();
intptr_t old_capacity, new_capacity;
old_capacity = new_space->TotalCapacity();
new_space->Grow();
new_capacity = new_space->TotalCapacity();
CHECK(2 * old_capacity == new_capacity);
FillUpNewSpace(new_space);
heap->CollectAllAvailableGarbage();
new_capacity = new_space->TotalCapacity();
CHECK(old_capacity == new_capacity);
}
static int NumberOfGlobalObjects() {
int count = 0;
HeapIterator iterator(CcTest::heap());
for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) {
if (obj->IsGlobalObject()) count++;
}
// Subtract two to compensate for the two global objects (not global
// JSObjects, of which there would only be one) that are part of the code stub
// context, which is always present.
return count - 2;
}
// Test that we don't embed maps from foreign contexts into
// optimized code.
TEST(LeakNativeContextViaMap) {
i::FLAG_allow_natives_syntax = true;
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope outer_scope(isolate);
v8::Persistent<v8::Context> ctx1p;
v8::Persistent<v8::Context> ctx2p;
{
v8::HandleScope scope(isolate);
ctx1p.Reset(isolate, v8::Context::New(isolate));
ctx2p.Reset(isolate, v8::Context::New(isolate));
v8::Local<v8::Context>::New(isolate, ctx1p)->Enter();
}
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(4, NumberOfGlobalObjects());
{
v8::HandleScope inner_scope(isolate);
CompileRun("var v = {x: 42}");
v8::Local<v8::Context> ctx1 = v8::Local<v8::Context>::New(isolate, ctx1p);
v8::Local<v8::Context> ctx2 = v8::Local<v8::Context>::New(isolate, ctx2p);
v8::Local<v8::Value> v = ctx1->Global()->Get(v8_str("v"));
ctx2->Enter();
ctx2->Global()->Set(v8_str("o"), v);
v8::Local<v8::Value> res = CompileRun(
"function f() { return o.x; }"
"for (var i = 0; i < 10; ++i) f();"
"%OptimizeFunctionOnNextCall(f);"
"f();");
CHECK_EQ(42, res->Int32Value());
ctx2->Global()->Set(v8_str("o"), v8::Int32::New(isolate, 0));
ctx2->Exit();
v8::Local<v8::Context>::New(isolate, ctx1)->Exit();
ctx1p.Reset();
isolate->ContextDisposedNotification();
}
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(2, NumberOfGlobalObjects());
ctx2p.Reset();
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(0, NumberOfGlobalObjects());
}
// Test that we don't embed functions from foreign contexts into
// optimized code.
TEST(LeakNativeContextViaFunction) {
i::FLAG_allow_natives_syntax = true;
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope outer_scope(isolate);
v8::Persistent<v8::Context> ctx1p;
v8::Persistent<v8::Context> ctx2p;
{
v8::HandleScope scope(isolate);
ctx1p.Reset(isolate, v8::Context::New(isolate));
ctx2p.Reset(isolate, v8::Context::New(isolate));
v8::Local<v8::Context>::New(isolate, ctx1p)->Enter();
}
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(4, NumberOfGlobalObjects());
{
v8::HandleScope inner_scope(isolate);
CompileRun("var v = function() { return 42; }");
v8::Local<v8::Context> ctx1 = v8::Local<v8::Context>::New(isolate, ctx1p);
v8::Local<v8::Context> ctx2 = v8::Local<v8::Context>::New(isolate, ctx2p);
v8::Local<v8::Value> v = ctx1->Global()->Get(v8_str("v"));
ctx2->Enter();
ctx2->Global()->Set(v8_str("o"), v);
v8::Local<v8::Value> res = CompileRun(
"function f(x) { return x(); }"
"for (var i = 0; i < 10; ++i) f(o);"
"%OptimizeFunctionOnNextCall(f);"
"f(o);");
CHECK_EQ(42, res->Int32Value());
ctx2->Global()->Set(v8_str("o"), v8::Int32::New(isolate, 0));
ctx2->Exit();
ctx1->Exit();
ctx1p.Reset();
isolate->ContextDisposedNotification();
}
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(2, NumberOfGlobalObjects());
ctx2p.Reset();
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(0, NumberOfGlobalObjects());
}
TEST(LeakNativeContextViaMapKeyed) {
i::FLAG_allow_natives_syntax = true;
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope outer_scope(isolate);
v8::Persistent<v8::Context> ctx1p;
v8::Persistent<v8::Context> ctx2p;
{
v8::HandleScope scope(isolate);
ctx1p.Reset(isolate, v8::Context::New(isolate));
ctx2p.Reset(isolate, v8::Context::New(isolate));
v8::Local<v8::Context>::New(isolate, ctx1p)->Enter();
}
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(4, NumberOfGlobalObjects());
{
v8::HandleScope inner_scope(isolate);
CompileRun("var v = [42, 43]");
v8::Local<v8::Context> ctx1 = v8::Local<v8::Context>::New(isolate, ctx1p);
v8::Local<v8::Context> ctx2 = v8::Local<v8::Context>::New(isolate, ctx2p);
v8::Local<v8::Value> v = ctx1->Global()->Get(v8_str("v"));
ctx2->Enter();
ctx2->Global()->Set(v8_str("o"), v);
v8::Local<v8::Value> res = CompileRun(
"function f() { return o[0]; }"
"for (var i = 0; i < 10; ++i) f();"
"%OptimizeFunctionOnNextCall(f);"
"f();");
CHECK_EQ(42, res->Int32Value());
ctx2->Global()->Set(v8_str("o"), v8::Int32::New(isolate, 0));
ctx2->Exit();
ctx1->Exit();
ctx1p.Reset();
isolate->ContextDisposedNotification();
}
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(2, NumberOfGlobalObjects());
ctx2p.Reset();
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(0, NumberOfGlobalObjects());
}
TEST(LeakNativeContextViaMapProto) {
i::FLAG_allow_natives_syntax = true;
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope outer_scope(isolate);
v8::Persistent<v8::Context> ctx1p;
v8::Persistent<v8::Context> ctx2p;
{
v8::HandleScope scope(isolate);
ctx1p.Reset(isolate, v8::Context::New(isolate));
ctx2p.Reset(isolate, v8::Context::New(isolate));
v8::Local<v8::Context>::New(isolate, ctx1p)->Enter();
}
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(4, NumberOfGlobalObjects());
{
v8::HandleScope inner_scope(isolate);
CompileRun("var v = { y: 42}");
v8::Local<v8::Context> ctx1 = v8::Local<v8::Context>::New(isolate, ctx1p);
v8::Local<v8::Context> ctx2 = v8::Local<v8::Context>::New(isolate, ctx2p);
v8::Local<v8::Value> v = ctx1->Global()->Get(v8_str("v"));
ctx2->Enter();
ctx2->Global()->Set(v8_str("o"), v);
v8::Local<v8::Value> res = CompileRun(
"function f() {"
" var p = {x: 42};"
" p.__proto__ = o;"
" return p.x;"
"}"
"for (var i = 0; i < 10; ++i) f();"
"%OptimizeFunctionOnNextCall(f);"
"f();");
CHECK_EQ(42, res->Int32Value());
ctx2->Global()->Set(v8_str("o"), v8::Int32::New(isolate, 0));
ctx2->Exit();
ctx1->Exit();
ctx1p.Reset();
isolate->ContextDisposedNotification();
}
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(2, NumberOfGlobalObjects());
ctx2p.Reset();
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(0, NumberOfGlobalObjects());
}
TEST(InstanceOfStubWriteBarrier) {
i::FLAG_allow_natives_syntax = true;
#ifdef VERIFY_HEAP
i::FLAG_verify_heap = true;
#endif
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft()) return;
if (i::FLAG_force_marking_deque_overflows) return;
v8::HandleScope outer_scope(CcTest::isolate());
{
v8::HandleScope scope(CcTest::isolate());
CompileRun(
"function foo () { }"
"function mkbar () { return new (new Function(\"\")) (); }"
"function f (x) { return (x instanceof foo); }"
"function g () { f(mkbar()); }"
"f(new foo()); f(new foo());"
"%OptimizeFunctionOnNextCall(f);"
"f(new foo()); g();");
}
IncrementalMarking* marking = CcTest::heap()->incremental_marking();
marking->Stop();
marking->Start(Heap::kNoGCFlags);
Handle<JSFunction> f =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("f"))));
CHECK(f->IsOptimized());
while (!Marking::IsBlack(Marking::MarkBitFrom(f->code())) &&
!marking->IsStopped()) {
// Discard any pending GC requests otherwise we will get GC when we enter
// code below.
marking->Step(MB, IncrementalMarking::NO_GC_VIA_STACK_GUARD);
}
CHECK(marking->IsMarking());
{
v8::HandleScope scope(CcTest::isolate());
v8::Handle<v8::Object> global = CcTest::global();
v8::Handle<v8::Function> g =
v8::Handle<v8::Function>::Cast(global->Get(v8_str("g")));
g->Call(global, 0, NULL);
}
CcTest::heap()->incremental_marking()->set_should_hurry(true);
CcTest::heap()->CollectGarbage(OLD_SPACE);
}
static int NumberOfProtoTransitions(Map* map) {
return TransitionArray::NumberOfPrototypeTransitions(
TransitionArray::GetPrototypeTransitions(map));
}
TEST(PrototypeTransitionClearing) {
if (FLAG_never_compact) return;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
CompileRun("var base = {};");
Handle<JSObject> baseObject =
v8::Utils::OpenHandle(
*v8::Handle<v8::Object>::Cast(
CcTest::global()->Get(v8_str("base"))));
int initialTransitions = NumberOfProtoTransitions(baseObject->map());
CompileRun(
"var live = [];"
"for (var i = 0; i < 10; i++) {"
" var object = {};"
" var prototype = {};"
" object.__proto__ = prototype;"
" if (i >= 3) live.push(object, prototype);"
"}");
// Verify that only dead prototype transitions are cleared.
CHECK_EQ(initialTransitions + 10,
NumberOfProtoTransitions(baseObject->map()));
CcTest::heap()->CollectAllGarbage();
const int transitions = 10 - 3;
CHECK_EQ(initialTransitions + transitions,
NumberOfProtoTransitions(baseObject->map()));
// Verify that prototype transitions array was compacted.
FixedArray* trans =
TransitionArray::GetPrototypeTransitions(baseObject->map());
for (int i = initialTransitions; i < initialTransitions + transitions; i++) {
int j = TransitionArray::kProtoTransitionHeaderSize + i;
CHECK(trans->get(j)->IsWeakCell());
CHECK(WeakCell::cast(trans->get(j))->value()->IsMap());
}
// Make sure next prototype is placed on an old-space evacuation candidate.
Handle<JSObject> prototype;
PagedSpace* space = CcTest::heap()->old_space();
{
AlwaysAllocateScope always_allocate(isolate);
SimulateFullSpace(space);
prototype = factory->NewJSArray(32 * KB, FAST_HOLEY_ELEMENTS,
Strength::WEAK, TENURED);
}
// Add a prototype on an evacuation candidate and verify that transition
// clearing correctly records slots in prototype transition array.
i::FLAG_always_compact = true;
Handle<Map> map(baseObject->map());
CHECK(!space->LastPage()->Contains(
TransitionArray::GetPrototypeTransitions(*map)->address()));
CHECK(space->LastPage()->Contains(prototype->address()));
}
TEST(ResetSharedFunctionInfoCountersDuringIncrementalMarking) {
i::FLAG_stress_compaction = false;
i::FLAG_allow_natives_syntax = true;
#ifdef VERIFY_HEAP
i::FLAG_verify_heap = true;
#endif
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft()) return;
v8::HandleScope outer_scope(CcTest::isolate());
{
v8::HandleScope scope(CcTest::isolate());
CompileRun(
"function f () {"
" var s = 0;"
" for (var i = 0; i < 100; i++) s += i;"
" return s;"
"}"
"f(); f();"
"%OptimizeFunctionOnNextCall(f);"
"f();");
}
Handle<JSFunction> f =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("f"))));
CHECK(f->IsOptimized());
IncrementalMarking* marking = CcTest::heap()->incremental_marking();
marking->Stop();
marking->Start(Heap::kNoGCFlags);
// The following calls will increment CcTest::heap()->global_ic_age().
CcTest::isolate()->ContextDisposedNotification();
SimulateIncrementalMarking(CcTest::heap());
CcTest::heap()->CollectAllGarbage();
CHECK_EQ(CcTest::heap()->global_ic_age(), f->shared()->ic_age());
CHECK_EQ(0, f->shared()->opt_count());
CHECK_EQ(0, f->shared()->code()->profiler_ticks());
}
TEST(ResetSharedFunctionInfoCountersDuringMarkSweep) {
i::FLAG_stress_compaction = false;
i::FLAG_allow_natives_syntax = true;
#ifdef VERIFY_HEAP
i::FLAG_verify_heap = true;
#endif
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft()) return;
v8::HandleScope outer_scope(CcTest::isolate());
{
v8::HandleScope scope(CcTest::isolate());
CompileRun(
"function f () {"
" var s = 0;"
" for (var i = 0; i < 100; i++) s += i;"
" return s;"
"}"
"f(); f();"
"%OptimizeFunctionOnNextCall(f);"
"f();");
}
Handle<JSFunction> f =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("f"))));
CHECK(f->IsOptimized());
CcTest::heap()->incremental_marking()->Stop();
// The following two calls will increment CcTest::heap()->global_ic_age().
CcTest::isolate()->ContextDisposedNotification();
CcTest::heap()->CollectAllGarbage();
CHECK_EQ(CcTest::heap()->global_ic_age(), f->shared()->ic_age());
CHECK_EQ(0, f->shared()->opt_count());
CHECK_EQ(0, f->shared()->code()->profiler_ticks());
}
TEST(IdleNotificationFinishMarking) {
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
SimulateFullSpace(CcTest::heap()->old_space());
IncrementalMarking* marking = CcTest::heap()->incremental_marking();
marking->Stop();
marking->Start(Heap::kNoGCFlags);
CHECK_EQ(CcTest::heap()->gc_count(), 0);
// TODO(hpayer): We cannot write proper unit test right now for heap.
// The ideal test would call kMaxIdleMarkingDelayCounter to test the
// marking delay counter.
// Perform a huge incremental marking step but don't complete marking.
intptr_t bytes_processed = 0;
do {
bytes_processed =
marking->Step(1 * MB, IncrementalMarking::NO_GC_VIA_STACK_GUARD,
IncrementalMarking::FORCE_MARKING,
IncrementalMarking::DO_NOT_FORCE_COMPLETION);
CHECK(!marking->IsIdleMarkingDelayCounterLimitReached());
} while (bytes_processed);
// The next invocations of incremental marking are not going to complete
// marking
// since the completion threshold is not reached
for (size_t i = 0; i < IncrementalMarking::kMaxIdleMarkingDelayCounter - 2;
i++) {
marking->Step(1 * MB, IncrementalMarking::NO_GC_VIA_STACK_GUARD,
IncrementalMarking::FORCE_MARKING,
IncrementalMarking::DO_NOT_FORCE_COMPLETION);
CHECK(!marking->IsIdleMarkingDelayCounterLimitReached());
}
marking->SetWeakClosureWasOverApproximatedForTesting(true);
// The next idle notification has to finish incremental marking.
const double kLongIdleTime = 1000.0;
CcTest::isolate()->IdleNotificationDeadline(
(v8::base::TimeTicks::HighResolutionNow().ToInternalValue() /
static_cast<double>(v8::base::Time::kMicrosecondsPerSecond)) +
kLongIdleTime);
CHECK_EQ(CcTest::heap()->gc_count(), 1);
}
// Test that HAllocateObject will always return an object in new-space.
TEST(OptimizedAllocationAlwaysInNewSpace) {
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return;
if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
v8::HandleScope scope(CcTest::isolate());
SimulateFullSpace(CcTest::heap()->new_space());
AlwaysAllocateScope always_allocate(CcTest::i_isolate());
v8::Local<v8::Value> res = CompileRun(
"function c(x) {"
" this.x = x;"
" for (var i = 0; i < 32; i++) {"
" this['x' + i] = x;"
" }"
"}"
"function f(x) { return new c(x); };"
"f(1); f(2); f(3);"
"%OptimizeFunctionOnNextCall(f);"
"f(4);");
CHECK_EQ(
4, res.As<v8::Object>()->GetRealNamedProperty(v8_str("x"))->Int32Value());
Handle<JSObject> o =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
CHECK(CcTest::heap()->InNewSpace(*o));
}
TEST(OptimizedPretenuringAllocationFolding) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return;
if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
v8::HandleScope scope(CcTest::isolate());
// Grow new space unitl maximum capacity reached.
while (!CcTest::heap()->new_space()->IsAtMaximumCapacity()) {
CcTest::heap()->new_space()->Grow();
}
i::ScopedVector<char> source(1024);
i::SNPrintF(
source,
"var number_elements = %d;"
"var elements = new Array();"
"function f() {"
" for (var i = 0; i < number_elements; i++) {"
" elements[i] = [[{}], [1.1]];"
" }"
" return elements[number_elements-1]"
"};"
"f(); gc();"
"f(); f();"
"%%OptimizeFunctionOnNextCall(f);"
"f();",
AllocationSite::kPretenureMinimumCreated);
v8::Local<v8::Value> res = CompileRun(source.start());
v8::Local<v8::Value> int_array = v8::Object::Cast(*res)->Get(v8_str("0"));
Handle<JSObject> int_array_handle =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(int_array));
v8::Local<v8::Value> double_array = v8::Object::Cast(*res)->Get(v8_str("1"));
Handle<JSObject> double_array_handle =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(double_array));
Handle<JSObject> o =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
CHECK(CcTest::heap()->InOldSpace(*o));
CHECK(CcTest::heap()->InOldSpace(*int_array_handle));
CHECK(CcTest::heap()->InOldSpace(int_array_handle->elements()));
CHECK(CcTest::heap()->InOldSpace(*double_array_handle));
CHECK(CcTest::heap()->InOldSpace(double_array_handle->elements()));
}
TEST(OptimizedPretenuringObjectArrayLiterals) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return;
if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
v8::HandleScope scope(CcTest::isolate());
// Grow new space unitl maximum capacity reached.
while (!CcTest::heap()->new_space()->IsAtMaximumCapacity()) {
CcTest::heap()->new_space()->Grow();
}
i::ScopedVector<char> source(1024);
i::SNPrintF(
source,
"var number_elements = %d;"
"var elements = new Array(number_elements);"
"function f() {"
" for (var i = 0; i < number_elements; i++) {"
" elements[i] = [{}, {}, {}];"
" }"
" return elements[number_elements - 1];"
"};"
"f(); gc();"
"f(); f();"
"%%OptimizeFunctionOnNextCall(f);"
"f();",
AllocationSite::kPretenureMinimumCreated);
v8::Local<v8::Value> res = CompileRun(source.start());
Handle<JSObject> o =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
CHECK(CcTest::heap()->InOldSpace(o->elements()));
CHECK(CcTest::heap()->InOldSpace(*o));
}
TEST(OptimizedPretenuringMixedInObjectProperties) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return;
if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
v8::HandleScope scope(CcTest::isolate());
// Grow new space unitl maximum capacity reached.
while (!CcTest::heap()->new_space()->IsAtMaximumCapacity()) {
CcTest::heap()->new_space()->Grow();
}
i::ScopedVector<char> source(1024);
i::SNPrintF(
source,
"var number_elements = %d;"
"var elements = new Array(number_elements);"
"function f() {"
" for (var i = 0; i < number_elements; i++) {"
" elements[i] = {a: {c: 2.2, d: {}}, b: 1.1};"
" }"
" return elements[number_elements - 1];"
"};"
"f(); gc();"
"f(); f();"
"%%OptimizeFunctionOnNextCall(f);"
"f();",
AllocationSite::kPretenureMinimumCreated);
v8::Local<v8::Value> res = CompileRun(source.start());
Handle<JSObject> o =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
CHECK(CcTest::heap()->InOldSpace(*o));
FieldIndex idx1 = FieldIndex::ForPropertyIndex(o->map(), 0);
FieldIndex idx2 = FieldIndex::ForPropertyIndex(o->map(), 1);
CHECK(CcTest::heap()->InOldSpace(o->RawFastPropertyAt(idx1)));
if (!o->IsUnboxedDoubleField(idx2)) {
CHECK(CcTest::heap()->InOldSpace(o->RawFastPropertyAt(idx2)));
} else {
CHECK_EQ(1.1, o->RawFastDoublePropertyAt(idx2));
}
JSObject* inner_object =
reinterpret_cast<JSObject*>(o->RawFastPropertyAt(idx1));
CHECK(CcTest::heap()->InOldSpace(inner_object));
if (!inner_object->IsUnboxedDoubleField(idx1)) {
CHECK(CcTest::heap()->InOldSpace(inner_object->RawFastPropertyAt(idx1)));
} else {
CHECK_EQ(2.2, inner_object->RawFastDoublePropertyAt(idx1));
}
CHECK(CcTest::heap()->InOldSpace(inner_object->RawFastPropertyAt(idx2)));
}
TEST(OptimizedPretenuringDoubleArrayProperties) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return;
if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
v8::HandleScope scope(CcTest::isolate());
// Grow new space unitl maximum capacity reached.
while (!CcTest::heap()->new_space()->IsAtMaximumCapacity()) {
CcTest::heap()->new_space()->Grow();
}
i::ScopedVector<char> source(1024);
i::SNPrintF(
source,
"var number_elements = %d;"
"var elements = new Array(number_elements);"
"function f() {"
" for (var i = 0; i < number_elements; i++) {"
" elements[i] = {a: 1.1, b: 2.2};"
" }"
" return elements[i - 1];"
"};"
"f(); gc();"
"f(); f();"
"%%OptimizeFunctionOnNextCall(f);"
"f();",
AllocationSite::kPretenureMinimumCreated);
v8::Local<v8::Value> res = CompileRun(source.start());
Handle<JSObject> o =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
CHECK(CcTest::heap()->InOldSpace(*o));
CHECK(CcTest::heap()->InOldSpace(o->properties()));
}
TEST(OptimizedPretenuringdoubleArrayLiterals) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return;
if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
v8::HandleScope scope(CcTest::isolate());
// Grow new space unitl maximum capacity reached.
while (!CcTest::heap()->new_space()->IsAtMaximumCapacity()) {
CcTest::heap()->new_space()->Grow();
}
i::ScopedVector<char> source(1024);
i::SNPrintF(
source,
"var number_elements = %d;"
"var elements = new Array(number_elements);"
"function f() {"
" for (var i = 0; i < number_elements; i++) {"
" elements[i] = [1.1, 2.2, 3.3];"
" }"
" return elements[number_elements - 1];"
"};"
"f(); gc();"
"f(); f();"
"%%OptimizeFunctionOnNextCall(f);"
"f();",
AllocationSite::kPretenureMinimumCreated);
v8::Local<v8::Value> res = CompileRun(source.start());
Handle<JSObject> o =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
CHECK(CcTest::heap()->InOldSpace(o->elements()));
CHECK(CcTest::heap()->InOldSpace(*o));
}
TEST(OptimizedPretenuringNestedMixedArrayLiterals) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return;
if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
v8::HandleScope scope(CcTest::isolate());
// Grow new space unitl maximum capacity reached.
while (!CcTest::heap()->new_space()->IsAtMaximumCapacity()) {
CcTest::heap()->new_space()->Grow();
}
i::ScopedVector<char> source(1024);
i::SNPrintF(
source,
"var number_elements = 100;"
"var elements = new Array(number_elements);"
"function f() {"
" for (var i = 0; i < number_elements; i++) {"
" elements[i] = [[{}, {}, {}], [1.1, 2.2, 3.3]];"
" }"
" return elements[number_elements - 1];"
"};"
"f(); gc();"
"f(); f();"
"%%OptimizeFunctionOnNextCall(f);"
"f();");
v8::Local<v8::Value> res = CompileRun(source.start());
v8::Local<v8::Value> int_array = v8::Object::Cast(*res)->Get(v8_str("0"));
Handle<JSObject> int_array_handle =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(int_array));
v8::Local<v8::Value> double_array = v8::Object::Cast(*res)->Get(v8_str("1"));
Handle<JSObject> double_array_handle =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(double_array));
Handle<JSObject> o =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
CHECK(CcTest::heap()->InOldSpace(*o));
CHECK(CcTest::heap()->InOldSpace(*int_array_handle));
CHECK(CcTest::heap()->InOldSpace(int_array_handle->elements()));
CHECK(CcTest::heap()->InOldSpace(*double_array_handle));
CHECK(CcTest::heap()->InOldSpace(double_array_handle->elements()));
}
TEST(OptimizedPretenuringNestedObjectLiterals) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return;
if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
v8::HandleScope scope(CcTest::isolate());
// Grow new space unitl maximum capacity reached.
while (!CcTest::heap()->new_space()->IsAtMaximumCapacity()) {
CcTest::heap()->new_space()->Grow();
}
i::ScopedVector<char> source(1024);
i::SNPrintF(
source,
"var number_elements = %d;"
"var elements = new Array(number_elements);"
"function f() {"
" for (var i = 0; i < number_elements; i++) {"
" elements[i] = [[{}, {}, {}],[{}, {}, {}]];"
" }"
" return elements[number_elements - 1];"
"};"
"f(); gc();"
"f(); f();"
"%%OptimizeFunctionOnNextCall(f);"
"f();",
AllocationSite::kPretenureMinimumCreated);
v8::Local<v8::Value> res = CompileRun(source.start());
v8::Local<v8::Value> int_array_1 = v8::Object::Cast(*res)->Get(v8_str("0"));
Handle<JSObject> int_array_handle_1 =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(int_array_1));
v8::Local<v8::Value> int_array_2 = v8::Object::Cast(*res)->Get(v8_str("1"));
Handle<JSObject> int_array_handle_2 =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(int_array_2));
Handle<JSObject> o =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
CHECK(CcTest::heap()->InOldSpace(*o));
CHECK(CcTest::heap()->InOldSpace(*int_array_handle_1));
CHECK(CcTest::heap()->InOldSpace(int_array_handle_1->elements()));
CHECK(CcTest::heap()->InOldSpace(*int_array_handle_2));
CHECK(CcTest::heap()->InOldSpace(int_array_handle_2->elements()));
}
TEST(OptimizedPretenuringNestedDoubleLiterals) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return;
if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
v8::HandleScope scope(CcTest::isolate());
// Grow new space unitl maximum capacity reached.
while (!CcTest::heap()->new_space()->IsAtMaximumCapacity()) {
CcTest::heap()->new_space()->Grow();
}
i::ScopedVector<char> source(1024);
i::SNPrintF(
source,
"var number_elements = %d;"
"var elements = new Array(number_elements);"
"function f() {"
" for (var i = 0; i < number_elements; i++) {"
" elements[i] = [[1.1, 1.2, 1.3],[2.1, 2.2, 2.3]];"
" }"
" return elements[number_elements - 1];"
"};"
"f(); gc();"
"f(); f();"
"%%OptimizeFunctionOnNextCall(f);"
"f();",
AllocationSite::kPretenureMinimumCreated);
v8::Local<v8::Value> res = CompileRun(source.start());
v8::Local<v8::Value> double_array_1 =
v8::Object::Cast(*res)->Get(v8_str("0"));
Handle<JSObject> double_array_handle_1 =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(double_array_1));
v8::Local<v8::Value> double_array_2 =
v8::Object::Cast(*res)->Get(v8_str("1"));
Handle<JSObject> double_array_handle_2 =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(double_array_2));
Handle<JSObject> o =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
CHECK(CcTest::heap()->InOldSpace(*o));
CHECK(CcTest::heap()->InOldSpace(*double_array_handle_1));
CHECK(CcTest::heap()->InOldSpace(double_array_handle_1->elements()));
CHECK(CcTest::heap()->InOldSpace(*double_array_handle_2));
CHECK(CcTest::heap()->InOldSpace(double_array_handle_2->elements()));
}
// Make sure pretenuring feedback is gathered for constructed objects as well
// as for literals.
TEST(OptimizedPretenuringConstructorCalls) {
if (!i::FLAG_pretenuring_call_new) {
// FLAG_pretenuring_call_new needs to be synced with the snapshot.
return;
}
i::FLAG_allow_natives_syntax = true;
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return;
if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
v8::HandleScope scope(CcTest::isolate());
// Grow new space unitl maximum capacity reached.
while (!CcTest::heap()->new_space()->IsAtMaximumCapacity()) {
CcTest::heap()->new_space()->Grow();
}
i::ScopedVector<char> source(1024);
// Call new is doing slack tracking for the first
// JSFunction::kGenerousAllocationCount allocations, and we can't find
// mementos during that time.
i::SNPrintF(
source,
"var number_elements = %d;"
"var elements = new Array(number_elements);"
"function foo() {"
" this.a = 3;"
" this.b = {};"
"}"
"function f() {"
" for (var i = 0; i < number_elements; i++) {"
" elements[i] = new foo();"
" }"
" return elements[number_elements - 1];"
"};"
"f(); gc();"
"f(); f();"
"%%OptimizeFunctionOnNextCall(f);"
"f();",
AllocationSite::kPretenureMinimumCreated +
JSFunction::kGenerousAllocationCount);
v8::Local<v8::Value> res = CompileRun(source.start());
Handle<JSObject> o =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
CHECK(CcTest::heap()->InOldSpace(*o));
}
TEST(OptimizedPretenuringCallNew) {
if (!i::FLAG_pretenuring_call_new) {
// FLAG_pretenuring_call_new needs to be synced with the snapshot.
return;
}
i::FLAG_allow_natives_syntax = true;
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return;
if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
v8::HandleScope scope(CcTest::isolate());
// Grow new space unitl maximum capacity reached.
while (!CcTest::heap()->new_space()->IsAtMaximumCapacity()) {
CcTest::heap()->new_space()->Grow();
}
i::ScopedVector<char> source(1024);
// Call new is doing slack tracking for the first
// JSFunction::kGenerousAllocationCount allocations, and we can't find
// mementos during that time.
i::SNPrintF(
source,
"var number_elements = %d;"
"var elements = new Array(number_elements);"
"function g() { this.a = 0; }"
"function f() {"
" for (var i = 0; i < number_elements; i++) {"
" elements[i] = new g();"
" }"
" return elements[number_elements - 1];"
"};"
"f(); gc();"
"f(); f();"
"%%OptimizeFunctionOnNextCall(f);"
"f();",
AllocationSite::kPretenureMinimumCreated +
JSFunction::kGenerousAllocationCount);
v8::Local<v8::Value> res = CompileRun(source.start());
Handle<JSObject> o =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
CHECK(CcTest::heap()->InOldSpace(*o));
}
// Test regular array literals allocation.
TEST(OptimizedAllocationArrayLiterals) {
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return;
if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Value> res = CompileRun(
"function f() {"
" var numbers = new Array(1, 2, 3);"
" numbers[0] = 3.14;"
" return numbers;"
"};"
"f(); f(); f();"
"%OptimizeFunctionOnNextCall(f);"
"f();");
CHECK_EQ(static_cast<int>(3.14),
v8::Object::Cast(*res)->Get(v8_str("0"))->Int32Value());
Handle<JSObject> o =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
CHECK(CcTest::heap()->InNewSpace(o->elements()));
}
static int CountMapTransitions(Map* map) {
return TransitionArray::NumberOfTransitions(map->raw_transitions());
}
// Test that map transitions are cleared and maps are collected with
// incremental marking as well.
TEST(Regress1465) {
i::FLAG_stress_compaction = false;
i::FLAG_allow_natives_syntax = true;
i::FLAG_trace_incremental_marking = true;
i::FLAG_retain_maps_for_n_gc = 0;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
static const int transitions_count = 256;
CompileRun("function F() {}");
{
AlwaysAllocateScope always_allocate(CcTest::i_isolate());
for (int i = 0; i < transitions_count; i++) {
EmbeddedVector<char, 64> buffer;
SNPrintF(buffer, "var o = new F; o.prop%d = %d;", i, i);
CompileRun(buffer.start());
}
CompileRun("var root = new F;");
}
Handle<JSObject> root =
v8::Utils::OpenHandle(
*v8::Handle<v8::Object>::Cast(
CcTest::global()->Get(v8_str("root"))));
// Count number of live transitions before marking.
int transitions_before = CountMapTransitions(root->map());
CompileRun("%DebugPrint(root);");
CHECK_EQ(transitions_count, transitions_before);
SimulateIncrementalMarking(CcTest::heap());
CcTest::heap()->CollectAllGarbage();
// Count number of live transitions after marking. Note that one transition
// is left, because 'o' still holds an instance of one transition target.
int transitions_after = CountMapTransitions(root->map());
CompileRun("%DebugPrint(root);");
CHECK_EQ(1, transitions_after);
}
#ifdef DEBUG
static void AddTransitions(int transitions_count) {
AlwaysAllocateScope always_allocate(CcTest::i_isolate());
for (int i = 0; i < transitions_count; i++) {
EmbeddedVector<char, 64> buffer;
SNPrintF(buffer, "var o = new F; o.prop%d = %d;", i, i);
CompileRun(buffer.start());
}
}
static Handle<JSObject> GetByName(const char* name) {
return v8::Utils::OpenHandle(
*v8::Handle<v8::Object>::Cast(
CcTest::global()->Get(v8_str(name))));
}
static void AddPropertyTo(
int gc_count, Handle<JSObject> object, const char* property_name) {
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
Handle<String> prop_name = factory->InternalizeUtf8String(property_name);
Handle<Smi> twenty_three(Smi::FromInt(23), isolate);
i::FLAG_gc_interval = gc_count;
i::FLAG_gc_global = true;
i::FLAG_retain_maps_for_n_gc = 0;
CcTest::heap()->set_allocation_timeout(gc_count);
JSReceiver::SetProperty(object, prop_name, twenty_three, SLOPPY).Check();
}
TEST(TransitionArrayShrinksDuringAllocToZero) {
i::FLAG_stress_compaction = false;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
static const int transitions_count = 10;
CompileRun("function F() { }");
AddTransitions(transitions_count);
CompileRun("var root = new F;");
Handle<JSObject> root = GetByName("root");
// Count number of live transitions before marking.
int transitions_before = CountMapTransitions(root->map());
CHECK_EQ(transitions_count, transitions_before);
// Get rid of o
CompileRun("o = new F;"
"root = new F");
root = GetByName("root");
AddPropertyTo(2, root, "funny");
CcTest::heap()->CollectGarbage(NEW_SPACE);
// Count number of live transitions after marking. Note that one transition
// is left, because 'o' still holds an instance of one transition target.
int transitions_after = CountMapTransitions(
Map::cast(root->map()->GetBackPointer()));
CHECK_EQ(1, transitions_after);
}
TEST(TransitionArrayShrinksDuringAllocToOne) {
i::FLAG_stress_compaction = false;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
static const int transitions_count = 10;
CompileRun("function F() {}");
AddTransitions(transitions_count);
CompileRun("var root = new F;");
Handle<JSObject> root = GetByName("root");
// Count number of live transitions before marking.
int transitions_before = CountMapTransitions(root->map());
CHECK_EQ(transitions_count, transitions_before);
root = GetByName("root");
AddPropertyTo(2, root, "funny");
CcTest::heap()->CollectGarbage(NEW_SPACE);
// Count number of live transitions after marking. Note that one transition
// is left, because 'o' still holds an instance of one transition target.
int transitions_after = CountMapTransitions(
Map::cast(root->map()->GetBackPointer()));
CHECK_EQ(2, transitions_after);
}
TEST(TransitionArrayShrinksDuringAllocToOnePropertyFound) {
i::FLAG_stress_compaction = false;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
static const int transitions_count = 10;
CompileRun("function F() {}");
AddTransitions(transitions_count);
CompileRun("var root = new F;");
Handle<JSObject> root = GetByName("root");
// Count number of live transitions before marking.
int transitions_before = CountMapTransitions(root->map());
CHECK_EQ(transitions_count, transitions_before);
root = GetByName("root");
AddPropertyTo(0, root, "prop9");
CcTest::i_isolate()->heap()->CollectGarbage(OLD_SPACE);
// Count number of live transitions after marking. Note that one transition
// is left, because 'o' still holds an instance of one transition target.
int transitions_after = CountMapTransitions(
Map::cast(root->map()->GetBackPointer()));
CHECK_EQ(1, transitions_after);
}
TEST(TransitionArraySimpleToFull) {
i::FLAG_stress_compaction = false;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
static const int transitions_count = 1;
CompileRun("function F() {}");
AddTransitions(transitions_count);
CompileRun("var root = new F;");
Handle<JSObject> root = GetByName("root");
// Count number of live transitions before marking.
int transitions_before = CountMapTransitions(root->map());
CHECK_EQ(transitions_count, transitions_before);
CompileRun("o = new F;"
"root = new F");
root = GetByName("root");
DCHECK(TransitionArray::IsSimpleTransition(root->map()->raw_transitions()));
AddPropertyTo(2, root, "happy");
// Count number of live transitions after marking. Note that one transition
// is left, because 'o' still holds an instance of one transition target.
int transitions_after = CountMapTransitions(
Map::cast(root->map()->GetBackPointer()));
CHECK_EQ(1, transitions_after);
}
#endif // DEBUG
TEST(Regress2143a) {
i::FLAG_incremental_marking = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
// Prepare a map transition from the root object together with a yet
// untransitioned root object.
CompileRun("var root = new Object;"
"root.foo = 0;"
"root = new Object;");
SimulateIncrementalMarking(CcTest::heap());
// Compile a StoreIC that performs the prepared map transition. This
// will restart incremental marking and should make sure the root is
// marked grey again.
CompileRun("function f(o) {"
" o.foo = 0;"
"}"
"f(new Object);"
"f(root);");
// This bug only triggers with aggressive IC clearing.
CcTest::heap()->AgeInlineCaches();
// Explicitly request GC to perform final marking step and sweeping.
CcTest::heap()->CollectAllGarbage();
Handle<JSObject> root =
v8::Utils::OpenHandle(
*v8::Handle<v8::Object>::Cast(
CcTest::global()->Get(v8_str("root"))));
// The root object should be in a sane state.
CHECK(root->IsJSObject());
CHECK(root->map()->IsMap());
}
TEST(Regress2143b) {
i::FLAG_incremental_marking = true;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
// Prepare a map transition from the root object together with a yet
// untransitioned root object.
CompileRun("var root = new Object;"
"root.foo = 0;"
"root = new Object;");
SimulateIncrementalMarking(CcTest::heap());
// Compile an optimized LStoreNamedField that performs the prepared
// map transition. This will restart incremental marking and should
// make sure the root is marked grey again.
CompileRun("function f(o) {"
" o.foo = 0;"
"}"
"f(new Object);"
"f(new Object);"
"%OptimizeFunctionOnNextCall(f);"
"f(root);"
"%DeoptimizeFunction(f);");
// This bug only triggers with aggressive IC clearing.
CcTest::heap()->AgeInlineCaches();
// Explicitly request GC to perform final marking step and sweeping.
CcTest::heap()->CollectAllGarbage();
Handle<JSObject> root =
v8::Utils::OpenHandle(
*v8::Handle<v8::Object>::Cast(
CcTest::global()->Get(v8_str("root"))));
// The root object should be in a sane state.
CHECK(root->IsJSObject());
CHECK(root->map()->IsMap());
}
TEST(ReleaseOverReservedPages) {
if (FLAG_never_compact) return;
i::FLAG_trace_gc = true;
// The optimizer can allocate stuff, messing up the test.
i::FLAG_crankshaft = false;
i::FLAG_always_opt = false;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
Heap* heap = isolate->heap();
v8::HandleScope scope(CcTest::isolate());
static const int number_of_test_pages = 20;
// Prepare many pages with low live-bytes count.
PagedSpace* old_space = heap->old_space();
CHECK_EQ(1, old_space->CountTotalPages());
for (int i = 0; i < number_of_test_pages; i++) {
AlwaysAllocateScope always_allocate(isolate);
SimulateFullSpace(old_space);
factory->NewFixedArray(1, TENURED);
}
CHECK_EQ(number_of_test_pages + 1, old_space->CountTotalPages());
// Triggering one GC will cause a lot of garbage to be discovered but
// even spread across all allocated pages.
heap->CollectAllGarbage(Heap::kFinalizeIncrementalMarkingMask,
"triggered for preparation");
CHECK_GE(number_of_test_pages + 1, old_space->CountTotalPages());
// Triggering subsequent GCs should cause at least half of the pages
// to be released to the OS after at most two cycles.
heap->CollectAllGarbage(Heap::kFinalizeIncrementalMarkingMask,
"triggered by test 1");
CHECK_GE(number_of_test_pages + 1, old_space->CountTotalPages());
heap->CollectAllGarbage(Heap::kFinalizeIncrementalMarkingMask,
"triggered by test 2");
CHECK_GE(number_of_test_pages + 1, old_space->CountTotalPages() * 2);
// Triggering a last-resort GC should cause all pages to be released to the
// OS so that other processes can seize the memory. If we get a failure here
// where there are 2 pages left instead of 1, then we should increase the
// size of the first page a little in SizeOfFirstPage in spaces.cc. The
// first page should be small in order to reduce memory used when the VM
// boots, but if the 20 small arrays don't fit on the first page then that's
// an indication that it is too small.
heap->CollectAllAvailableGarbage("triggered really hard");
CHECK_EQ(1, old_space->CountTotalPages());
}
static int forced_gc_counter = 0;
void MockUseCounterCallback(v8::Isolate* isolate,
v8::Isolate::UseCounterFeature feature) {
isolate->GetCallingContext();
if (feature == v8::Isolate::kForcedGC) {
forced_gc_counter++;
}
}
TEST(CountForcedGC) {
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
v8::HandleScope scope(CcTest::isolate());
isolate->SetUseCounterCallback(MockUseCounterCallback);
forced_gc_counter = 0;
const char* source = "gc();";
CompileRun(source);
CHECK_GT(forced_gc_counter, 0);
}
TEST(Regress2237) {
i::FLAG_stress_compaction = false;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
Handle<String> slice(CcTest::heap()->empty_string());
{
// Generate a parent that lives in new-space.
v8::HandleScope inner_scope(CcTest::isolate());
const char* c = "This text is long enough to trigger sliced strings.";
Handle<String> s = factory->NewStringFromAsciiChecked(c);
CHECK(s->IsSeqOneByteString());
CHECK(CcTest::heap()->InNewSpace(*s));
// Generate a sliced string that is based on the above parent and
// lives in old-space.
SimulateFullSpace(CcTest::heap()->new_space());
AlwaysAllocateScope always_allocate(isolate);
Handle<String> t = factory->NewProperSubString(s, 5, 35);
CHECK(t->IsSlicedString());
CHECK(!CcTest::heap()->InNewSpace(*t));
*slice.location() = *t.location();
}
CHECK(SlicedString::cast(*slice)->parent()->IsSeqOneByteString());
CcTest::heap()->CollectAllGarbage();
CHECK(SlicedString::cast(*slice)->parent()->IsSeqOneByteString());
}
#ifdef OBJECT_PRINT
TEST(PrintSharedFunctionInfo) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
const char* source = "f = function() { return 987654321; }\n"
"g = function() { return 123456789; }\n";
CompileRun(source);
Handle<JSFunction> g =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("g"))));
OFStream os(stdout);
g->shared()->Print(os);
os << std::endl;
}
#endif // OBJECT_PRINT
TEST(IncrementalMarkingPreservesMonomorphicCallIC) {
if (i::FLAG_always_opt) return;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Value> fun1, fun2;
{
LocalContext env;
CompileRun("function fun() {};");
fun1 = env->Global()->Get(v8_str("fun"));
}
{
LocalContext env;
CompileRun("function fun() {};");
fun2 = env->Global()->Get(v8_str("fun"));
}
// Prepare function f that contains type feedback for closures
// originating from two different native contexts.
CcTest::global()->Set(v8_str("fun1"), fun1);
CcTest::global()->Set(v8_str("fun2"), fun2);
CompileRun("function f(a, b) { a(); b(); } f(fun1, fun2);");
Handle<JSFunction> f =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("f"))));
Handle<TypeFeedbackVector> feedback_vector(f->shared()->feedback_vector());
int expected_slots = 2;
CHECK_EQ(expected_slots, feedback_vector->ICSlots());
int slot1 = 0;
int slot2 = 1;
CHECK(feedback_vector->Get(FeedbackVectorICSlot(slot1))->IsWeakCell());
CHECK(feedback_vector->Get(FeedbackVectorICSlot(slot2))->IsWeakCell());
SimulateIncrementalMarking(CcTest::heap());
CcTest::heap()->CollectAllGarbage();
CHECK(!WeakCell::cast(feedback_vector->Get(FeedbackVectorICSlot(slot1)))
->cleared());
CHECK(!WeakCell::cast(feedback_vector->Get(FeedbackVectorICSlot(slot2)))
->cleared());
}
static Code* FindFirstIC(Code* code, Code::Kind kind) {
int mask = RelocInfo::ModeMask(RelocInfo::CODE_TARGET) |
RelocInfo::ModeMask(RelocInfo::CONSTRUCT_CALL) |
RelocInfo::ModeMask(RelocInfo::CODE_TARGET_WITH_ID);
for (RelocIterator it(code, mask); !it.done(); it.next()) {
RelocInfo* info = it.rinfo();
Code* target = Code::GetCodeFromTargetAddress(info->target_address());
if (target->is_inline_cache_stub() && target->kind() == kind) {
return target;
}
}
return NULL;
}
static void CheckVectorIC(Handle<JSFunction> f, int ic_slot_index,
InlineCacheState desired_state) {
Handle<TypeFeedbackVector> vector =
Handle<TypeFeedbackVector>(f->shared()->feedback_vector());
FeedbackVectorICSlot slot(ic_slot_index);
LoadICNexus nexus(vector, slot);
CHECK(nexus.StateFromFeedback() == desired_state);
}
static void CheckVectorICCleared(Handle<JSFunction> f, int ic_slot_index) {
Handle<TypeFeedbackVector> vector =
Handle<TypeFeedbackVector>(f->shared()->feedback_vector());
FeedbackVectorICSlot slot(ic_slot_index);
LoadICNexus nexus(vector, slot);
CHECK(IC::IsCleared(&nexus));
}
TEST(IncrementalMarkingPreservesMonomorphicConstructor) {
if (i::FLAG_always_opt) return;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
// Prepare function f that contains a monomorphic IC for object
// originating from the same native context.
CompileRun(
"function fun() { this.x = 1; };"
"function f(o) { return new o(); } f(fun); f(fun);");
Handle<JSFunction> f = v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f"))));
Handle<TypeFeedbackVector> vector(f->shared()->feedback_vector());
CHECK(vector->Get(FeedbackVectorSlot(0))->IsWeakCell());
SimulateIncrementalMarking(CcTest::heap());
CcTest::heap()->CollectAllGarbage();
CHECK(vector->Get(FeedbackVectorSlot(0))->IsWeakCell());
}
TEST(IncrementalMarkingClearsMonomorphicConstructor) {
if (i::FLAG_always_opt) return;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Value> fun1;
{
LocalContext env;
CompileRun("function fun() { this.x = 1; };");
fun1 = env->Global()->Get(v8_str("fun"));
}
// Prepare function f that contains a monomorphic constructor for object
// originating from a different native context.
CcTest::global()->Set(v8_str("fun1"), fun1);
CompileRun(
"function fun() { this.x = 1; };"
"function f(o) { return new o(); } f(fun1); f(fun1);");
Handle<JSFunction> f = v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f"))));
Handle<TypeFeedbackVector> vector(f->shared()->feedback_vector());
CHECK(vector->Get(FeedbackVectorSlot(0))->IsWeakCell());
// Fire context dispose notification.
CcTest::isolate()->ContextDisposedNotification();
SimulateIncrementalMarking(CcTest::heap());
CcTest::heap()->CollectAllGarbage();
CHECK_EQ(*TypeFeedbackVector::UninitializedSentinel(isolate),
vector->Get(FeedbackVectorSlot(0)));
}
TEST(IncrementalMarkingPreservesMonomorphicIC) {
if (i::FLAG_always_opt) return;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
// Prepare function f that contains a monomorphic IC for object
// originating from the same native context.
CompileRun("function fun() { this.x = 1; }; var obj = new fun();"
"function f(o) { return o.x; } f(obj); f(obj);");
Handle<JSFunction> f =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("f"))));
Code* ic_before = FindFirstIC(f->shared()->code(), Code::LOAD_IC);
CheckVectorIC(f, 0, MONOMORPHIC);
CHECK(ic_before->ic_state() == DEFAULT);
SimulateIncrementalMarking(CcTest::heap());
CcTest::heap()->CollectAllGarbage();
Code* ic_after = FindFirstIC(f->shared()->code(), Code::LOAD_IC);
CheckVectorIC(f, 0, MONOMORPHIC);
CHECK(ic_after->ic_state() == DEFAULT);
}
TEST(IncrementalMarkingClearsMonomorphicIC) {
if (i::FLAG_always_opt) return;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Value> obj1;
{
LocalContext env;
CompileRun("function fun() { this.x = 1; }; var obj = new fun();");
obj1 = env->Global()->Get(v8_str("obj"));
}
// Prepare function f that contains a monomorphic IC for object
// originating from a different native context.
CcTest::global()->Set(v8_str("obj1"), obj1);
CompileRun("function f(o) { return o.x; } f(obj1); f(obj1);");
Handle<JSFunction> f = v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f"))));
Code* ic_before = FindFirstIC(f->shared()->code(), Code::LOAD_IC);
CheckVectorIC(f, 0, MONOMORPHIC);
CHECK(ic_before->ic_state() == DEFAULT);
// Fire context dispose notification.
CcTest::isolate()->ContextDisposedNotification();
SimulateIncrementalMarking(CcTest::heap());
CcTest::heap()->CollectAllGarbage();
Code* ic_after = FindFirstIC(f->shared()->code(), Code::LOAD_IC);
CheckVectorICCleared(f, 0);
CHECK(ic_after->ic_state() == DEFAULT);
}
TEST(IncrementalMarkingPreservesPolymorphicIC) {
if (i::FLAG_always_opt) return;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Value> obj1, obj2;
{
LocalContext env;
CompileRun("function fun() { this.x = 1; }; var obj = new fun();");
obj1 = env->Global()->Get(v8_str("obj"));
}
{
LocalContext env;
CompileRun("function fun() { this.x = 2; }; var obj = new fun();");
obj2 = env->Global()->Get(v8_str("obj"));
}
// Prepare function f that contains a polymorphic IC for objects
// originating from two different native contexts.
CcTest::global()->Set(v8_str("obj1"), obj1);
CcTest::global()->Set(v8_str("obj2"), obj2);
CompileRun("function f(o) { return o.x; } f(obj1); f(obj1); f(obj2);");
Handle<JSFunction> f = v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f"))));
Code* ic_before = FindFirstIC(f->shared()->code(), Code::LOAD_IC);
CheckVectorIC(f, 0, POLYMORPHIC);
CHECK(ic_before->ic_state() == DEFAULT);
// Fire context dispose notification.
SimulateIncrementalMarking(CcTest::heap());
CcTest::heap()->CollectAllGarbage();
Code* ic_after = FindFirstIC(f->shared()->code(), Code::LOAD_IC);
CheckVectorIC(f, 0, POLYMORPHIC);
CHECK(ic_after->ic_state() == DEFAULT);
}
TEST(IncrementalMarkingClearsPolymorphicIC) {
if (i::FLAG_always_opt) return;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Value> obj1, obj2;
{
LocalContext env;
CompileRun("function fun() { this.x = 1; }; var obj = new fun();");
obj1 = env->Global()->Get(v8_str("obj"));
}
{
LocalContext env;
CompileRun("function fun() { this.x = 2; }; var obj = new fun();");
obj2 = env->Global()->Get(v8_str("obj"));
}
// Prepare function f that contains a polymorphic IC for objects
// originating from two different native contexts.
CcTest::global()->Set(v8_str("obj1"), obj1);
CcTest::global()->Set(v8_str("obj2"), obj2);
CompileRun("function f(o) { return o.x; } f(obj1); f(obj1); f(obj2);");
Handle<JSFunction> f = v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f"))));
Code* ic_before = FindFirstIC(f->shared()->code(), Code::LOAD_IC);
CheckVectorIC(f, 0, POLYMORPHIC);
CHECK(ic_before->ic_state() == DEFAULT);
// Fire context dispose notification.
CcTest::isolate()->ContextDisposedNotification();
SimulateIncrementalMarking(CcTest::heap());
CcTest::heap()->CollectAllGarbage();
CheckVectorICCleared(f, 0);
CHECK(ic_before->ic_state() == DEFAULT);
}
class SourceResource : public v8::String::ExternalOneByteStringResource {
public:
explicit SourceResource(const char* data)
: data_(data), length_(strlen(data)) { }
virtual void Dispose() {
i::DeleteArray(data_);
data_ = NULL;
}
const char* data() const { return data_; }
size_t length() const { return length_; }
bool IsDisposed() { return data_ == NULL; }
private:
const char* data_;
size_t length_;
};
void ReleaseStackTraceDataTest(v8::Isolate* isolate, const char* source,
const char* accessor) {
// Test that the data retained by the Error.stack accessor is released
// after the first time the accessor is fired. We use external string
// to check whether the data is being released since the external string
// resource's callback is fired when the external string is GC'ed.
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
v8::HandleScope scope(isolate);
SourceResource* resource = new SourceResource(i::StrDup(source));
{
v8::HandleScope scope(isolate);
v8::Handle<v8::String> source_string =
v8::String::NewExternal(isolate, resource);
i_isolate->heap()->CollectAllAvailableGarbage();
v8::Script::Compile(source_string)->Run();
CHECK(!resource->IsDisposed());
}
// i_isolate->heap()->CollectAllAvailableGarbage();
CHECK(!resource->IsDisposed());
CompileRun(accessor);
i_isolate->heap()->CollectAllAvailableGarbage();
// External source has been released.
CHECK(resource->IsDisposed());
delete resource;
}
UNINITIALIZED_TEST(ReleaseStackTraceData) {
if (i::FLAG_always_opt) {
// TODO(ulan): Remove this once the memory leak via code_next_link is fixed.
// See: https://codereview.chromium.org/181833004/
return;
}
FLAG_use_ic = false; // ICs retain objects.
FLAG_concurrent_recompilation = false;
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(create_params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Context::New(isolate)->Enter();
static const char* source1 = "var error = null; "
/* Normal Error */ "try { "
" throw new Error(); "
"} catch (e) { "
" error = e; "
"} ";
static const char* source2 = "var error = null; "
/* Stack overflow */ "try { "
" (function f() { f(); })(); "
"} catch (e) { "
" error = e; "
"} ";
static const char* source3 = "var error = null; "
/* Normal Error */ "try { "
/* as prototype */ " throw new Error(); "
"} catch (e) { "
" error = {}; "
" error.__proto__ = e; "
"} ";
static const char* source4 = "var error = null; "
/* Stack overflow */ "try { "
/* as prototype */ " (function f() { f(); })(); "
"} catch (e) { "
" error = {}; "
" error.__proto__ = e; "
"} ";
static const char* getter = "error.stack";
static const char* setter = "error.stack = 0";
ReleaseStackTraceDataTest(isolate, source1, setter);
ReleaseStackTraceDataTest(isolate, source2, setter);
// We do not test source3 and source4 with setter, since the setter is
// supposed to (untypically) write to the receiver, not the holder. This is
// to emulate the behavior of a data property.
ReleaseStackTraceDataTest(isolate, source1, getter);
ReleaseStackTraceDataTest(isolate, source2, getter);
ReleaseStackTraceDataTest(isolate, source3, getter);
ReleaseStackTraceDataTest(isolate, source4, getter);
}
isolate->Dispose();
}
TEST(Regress159140) {
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
HandleScope scope(isolate);
// Perform one initial GC to enable code flushing.
heap->CollectAllGarbage();
// Prepare several closures that are all eligible for code flushing
// because all reachable ones are not optimized. Make sure that the
// optimized code object is directly reachable through a handle so
// that it is marked black during incremental marking.
Handle<Code> code;
{
HandleScope inner_scope(isolate);
CompileRun("function h(x) {}"
"function mkClosure() {"
" return function(x) { return x + 1; };"
"}"
"var f = mkClosure();"
"var g = mkClosure();"
"f(1); f(2);"
"g(1); g(2);"
"h(1); h(2);"
"%OptimizeFunctionOnNextCall(f); f(3);"
"%OptimizeFunctionOnNextCall(h); h(3);");
Handle<JSFunction> f =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("f"))));
CHECK(f->is_compiled());
CompileRun("f = null;");
Handle<JSFunction> g =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("g"))));
CHECK(g->is_compiled());
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
g->code()->MakeOlder(static_cast<MarkingParity>(i % 2));
}
code = inner_scope.CloseAndEscape(Handle<Code>(f->code()));
}
// Simulate incremental marking so that the functions are enqueued as
// code flushing candidates. Then optimize one function. Finally
// finish the GC to complete code flushing.
SimulateIncrementalMarking(heap);
CompileRun("%OptimizeFunctionOnNextCall(g); g(3);");
heap->CollectAllGarbage();
// Unoptimized code is missing and the deoptimizer will go ballistic.
CompileRun("g('bozo');");
}
TEST(Regress165495) {
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
HandleScope scope(isolate);
// Perform one initial GC to enable code flushing.
heap->CollectAllGarbage();
// Prepare an optimized closure that the optimized code map will get
// populated. Then age the unoptimized code to trigger code flushing
// but make sure the optimized code is unreachable.
{
HandleScope inner_scope(isolate);
CompileRun("function mkClosure() {"
" return function(x) { return x + 1; };"
"}"
"var f = mkClosure();"
"f(1); f(2);"
"%OptimizeFunctionOnNextCall(f); f(3);");
Handle<JSFunction> f =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("f"))));
CHECK(f->is_compiled());
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
f->shared()->code()->MakeOlder(static_cast<MarkingParity>(i % 2));
}
CompileRun("f = null;");
}
// Simulate incremental marking so that unoptimized code is flushed
// even though it still is cached in the optimized code map.
SimulateIncrementalMarking(heap);
heap->CollectAllGarbage();
// Make a new closure that will get code installed from the code map.
// Unoptimized code is missing and the deoptimizer will go ballistic.
CompileRun("var g = mkClosure(); g('bozo');");
}
TEST(Regress169209) {
i::FLAG_stress_compaction = false;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
HandleScope scope(isolate);
// Perform one initial GC to enable code flushing.
heap->CollectAllGarbage();
// Prepare a shared function info eligible for code flushing for which
// the unoptimized code will be replaced during optimization.
Handle<SharedFunctionInfo> shared1;
{
HandleScope inner_scope(isolate);
CompileRun("function f() { return 'foobar'; }"
"function g(x) { if (x) f(); }"
"f();"
"g(false);"
"g(false);");
Handle<JSFunction> f =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("f"))));
CHECK(f->is_compiled());
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
f->shared()->code()->MakeOlder(static_cast<MarkingParity>(i % 2));
}
shared1 = inner_scope.CloseAndEscape(handle(f->shared(), isolate));
}
// Prepare a shared function info eligible for code flushing that will
// represent the dangling tail of the candidate list.
Handle<SharedFunctionInfo> shared2;
{
HandleScope inner_scope(isolate);
CompileRun("function flushMe() { return 0; }"
"flushMe(1);");
Handle<JSFunction> f =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("flushMe"))));
CHECK(f->is_compiled());
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
f->shared()->code()->MakeOlder(static_cast<MarkingParity>(i % 2));
}
shared2 = inner_scope.CloseAndEscape(handle(f->shared(), isolate));
}
// Simulate incremental marking and collect code flushing candidates.
SimulateIncrementalMarking(heap);
CHECK(shared1->code()->gc_metadata() != NULL);
// Optimize function and make sure the unoptimized code is replaced.
#ifdef DEBUG
FLAG_stop_at = "f";
#endif
CompileRun("%OptimizeFunctionOnNextCall(g);"
"g(false);");
// Finish garbage collection cycle.
heap->CollectAllGarbage();
CHECK(shared1->code()->gc_metadata() == NULL);
}
TEST(Regress169928) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_crankshaft = false;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
// Some flags turn Scavenge collections into Mark-sweep collections
// and hence are incompatible with this test case.
if (FLAG_gc_global || FLAG_stress_compaction) return;
// Prepare the environment
CompileRun("function fastliteralcase(literal, value) {"
" literal[0] = value;"
" return literal;"
"}"
"function get_standard_literal() {"
" var literal = [1, 2, 3];"
" return literal;"
"}"
"obj = fastliteralcase(get_standard_literal(), 1);"
"obj = fastliteralcase(get_standard_literal(), 1.5);"
"obj = fastliteralcase(get_standard_literal(), 2);");
// prepare the heap
v8::Local<v8::String> mote_code_string =
v8_str("fastliteralcase(mote, 2.5);");
v8::Local<v8::String> array_name = v8_str("mote");
CcTest::global()->Set(array_name, v8::Int32::New(CcTest::isolate(), 0));
// First make sure we flip spaces
CcTest::heap()->CollectGarbage(NEW_SPACE);
// Allocate the object.
Handle<FixedArray> array_data = factory->NewFixedArray(2, NOT_TENURED);
array_data->set(0, Smi::FromInt(1));
array_data->set(1, Smi::FromInt(2));
AllocateAllButNBytes(CcTest::heap()->new_space(),
JSArray::kSize + AllocationMemento::kSize +
kPointerSize);
Handle<JSArray> array =
factory->NewJSArrayWithElements(array_data, FAST_SMI_ELEMENTS);
CHECK_EQ(Smi::FromInt(2), array->length());
CHECK(array->HasFastSmiOrObjectElements());
// We need filler the size of AllocationMemento object, plus an extra
// fill pointer value.
HeapObject* obj = NULL;
AllocationResult allocation =
CcTest::heap()->new_space()->AllocateRawUnaligned(
AllocationMemento::kSize + kPointerSize);
CHECK(allocation.To(&obj));
Address addr_obj = obj->address();
CcTest::heap()->CreateFillerObjectAt(
addr_obj, AllocationMemento::kSize + kPointerSize);
// Give the array a name, making sure not to allocate strings.
v8::Handle<v8::Object> array_obj = v8::Utils::ToLocal(array);
CcTest::global()->Set(array_name, array_obj);
// This should crash with a protection violation if we are running a build
// with the bug.
AlwaysAllocateScope aa_scope(isolate);
v8::Script::Compile(mote_code_string)->Run();
}
TEST(Regress168801) {
if (i::FLAG_never_compact) return;
i::FLAG_always_compact = true;
i::FLAG_cache_optimized_code = false;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
HandleScope scope(isolate);
// Perform one initial GC to enable code flushing.
heap->CollectAllGarbage();
// Ensure the code ends up on an evacuation candidate.
SimulateFullSpace(heap->code_space());
// Prepare an unoptimized function that is eligible for code flushing.
Handle<JSFunction> function;
{
HandleScope inner_scope(isolate);
CompileRun("function mkClosure() {"
" return function(x) { return x + 1; };"
"}"
"var f = mkClosure();"
"f(1); f(2);");
Handle<JSFunction> f =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("f"))));
CHECK(f->is_compiled());
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
f->shared()->code()->MakeOlder(static_cast<MarkingParity>(i % 2));
}
function = inner_scope.CloseAndEscape(handle(*f, isolate));
}
// Simulate incremental marking so that unoptimized function is enqueued as a
// candidate for code flushing. The shared function info however will not be
// explicitly enqueued.
SimulateIncrementalMarking(heap);
// Now optimize the function so that it is taken off the candidate list.
{
HandleScope inner_scope(isolate);
CompileRun("%OptimizeFunctionOnNextCall(f); f(3);");
}
// This cycle will bust the heap and subsequent cycles will go ballistic.
heap->CollectAllGarbage();
heap->CollectAllGarbage();
}
TEST(Regress173458) {
if (i::FLAG_never_compact) return;
i::FLAG_always_compact = true;
i::FLAG_cache_optimized_code = false;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
HandleScope scope(isolate);
// Perform one initial GC to enable code flushing.
heap->CollectAllGarbage();
// Ensure the code ends up on an evacuation candidate.
SimulateFullSpace(heap->code_space());
// Prepare an unoptimized function that is eligible for code flushing.
Handle<JSFunction> function;
{
HandleScope inner_scope(isolate);
CompileRun("function mkClosure() {"
" return function(x) { return x + 1; };"
"}"
"var f = mkClosure();"
"f(1); f(2);");
Handle<JSFunction> f =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("f"))));
CHECK(f->is_compiled());
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
f->shared()->code()->MakeOlder(static_cast<MarkingParity>(i % 2));
}
function = inner_scope.CloseAndEscape(handle(*f, isolate));
}
// Simulate incremental marking so that unoptimized function is enqueued as a
// candidate for code flushing. The shared function info however will not be
// explicitly enqueued.
SimulateIncrementalMarking(heap);
// Now enable the debugger which in turn will disable code flushing.
CHECK(isolate->debug()->Load());
// This cycle will bust the heap and subsequent cycles will go ballistic.
heap->CollectAllGarbage();
heap->CollectAllGarbage();
}
#ifdef DEBUG
TEST(Regress513507) {
i::FLAG_flush_optimized_code_cache = false;
i::FLAG_allow_natives_syntax = true;
i::FLAG_gc_global = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
HandleScope scope(isolate);
// Prepare function whose optimized code map we can use.
Handle<SharedFunctionInfo> shared;
{
HandleScope inner_scope(isolate);
CompileRun("function f() { return 1 }"
"f(); %OptimizeFunctionOnNextCall(f); f();");
Handle<JSFunction> f =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("f"))));
shared = inner_scope.CloseAndEscape(handle(f->shared(), isolate));
CompileRun("f = null");
}
// Prepare optimized code that we can use.
Handle<Code> code;
{
HandleScope inner_scope(isolate);
CompileRun("function g() { return 2 }"
"g(); %OptimizeFunctionOnNextCall(g); g();");
Handle<JSFunction> g =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("g"))));
code = inner_scope.CloseAndEscape(handle(g->code(), isolate));
if (!code->is_optimized_code()) return;
}
Handle<FixedArray> lit = isolate->factory()->empty_fixed_array();
Handle<Context> context(isolate->context());
// Add the new code several times to the optimized code map and also set an
// allocation timeout so that expanding the code map will trigger a GC.
heap->set_allocation_timeout(5);
FLAG_gc_interval = 1000;
for (int i = 0; i < 10; ++i) {
BailoutId id = BailoutId(i);
SharedFunctionInfo::AddToOptimizedCodeMap(shared, context, code, lit, id);
}
}
#endif // DEBUG
TEST(Regress514122) {
i::FLAG_flush_optimized_code_cache = false;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
HandleScope scope(isolate);
// Perfrom one initial GC to enable code flushing.
CcTest::heap()->CollectAllGarbage();
// Prepare function whose optimized code map we can use.
Handle<SharedFunctionInfo> shared;
{
HandleScope inner_scope(isolate);
CompileRun("function f() { return 1 }"
"f(); %OptimizeFunctionOnNextCall(f); f();");
Handle<JSFunction> f =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("f"))));
shared = inner_scope.CloseAndEscape(handle(f->shared(), isolate));
CompileRun("f = null");
}
// Prepare optimized code that we can use.
Handle<Code> code;
{
HandleScope inner_scope(isolate);
CompileRun("function g() { return 2 }"
"g(); %OptimizeFunctionOnNextCall(g); g();");
Handle<JSFunction> g =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("g"))));
code = inner_scope.CloseAndEscape(handle(g->code(), isolate));
if (!code->is_optimized_code()) return;
}
Handle<FixedArray> lit = isolate->factory()->empty_fixed_array();
Handle<Context> context(isolate->context());
// Add the code several times to the optimized code map.
for (int i = 0; i < 3; ++i) {
HandleScope inner_scope(isolate);
BailoutId id = BailoutId(i);
SharedFunctionInfo::AddToOptimizedCodeMap(shared, context, code, lit, id);
}
shared->optimized_code_map()->Print();
// Add the code with a literals array to be evacuated.
Page* evac_page;
{
HandleScope inner_scope(isolate);
AlwaysAllocateScope always_allocate(isolate);
// Make sure literal is placed on an old-space evacuation candidate.
SimulateFullSpace(heap->old_space());
Handle<FixedArray> lit = isolate->factory()->NewFixedArray(23, TENURED);
evac_page = Page::FromAddress(lit->address());
BailoutId id = BailoutId(100);
SharedFunctionInfo::AddToOptimizedCodeMap(shared, context, code, lit, id);
}
// Heap is ready, force {lit_page} to become an evacuation candidate and
// simulate incremental marking to enqueue optimized code map.
FLAG_manual_evacuation_candidates_selection = true;
evac_page->SetFlag(MemoryChunk::FORCE_EVACUATION_CANDIDATE_FOR_TESTING);
SimulateIncrementalMarking(heap);
// No matter whether reachable or not, {boomer} is doomed.
Handle<Object> boomer(shared->optimized_code_map(), isolate);
// Add the code several times to the optimized code map. This will leave old
// copies of the optimized code map unreachable but still marked.
for (int i = 3; i < 6; ++i) {
HandleScope inner_scope(isolate);
BailoutId id = BailoutId(i);
SharedFunctionInfo::AddToOptimizedCodeMap(shared, context, code, lit, id);
}
// Trigger a GC to flush out the bug.
heap->CollectGarbage(i::OLD_SPACE, "fire in the hole");
boomer->Print();
}
class DummyVisitor : public ObjectVisitor {
public:
void VisitPointers(Object** start, Object** end) { }
};
TEST(DeferredHandles) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
v8::HandleScope scope(reinterpret_cast<v8::Isolate*>(isolate));
HandleScopeData* data = isolate->handle_scope_data();
Handle<Object> init(heap->empty_string(), isolate);
while (data->next < data->limit) {
Handle<Object> obj(heap->empty_string(), isolate);
}
// An entire block of handles has been filled.
// Next handle would require a new block.
DCHECK(data->next == data->limit);
DeferredHandleScope deferred(isolate);
DummyVisitor visitor;
isolate->handle_scope_implementer()->Iterate(&visitor);
delete deferred.Detach();
}
TEST(IncrementalMarkingStepMakesBigProgressWithLargeObjects) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
CompileRun("function f(n) {"
" var a = new Array(n);"
" for (var i = 0; i < n; i += 100) a[i] = i;"
"};"
"f(10 * 1024 * 1024);");
IncrementalMarking* marking = CcTest::heap()->incremental_marking();
if (marking->IsStopped()) marking->Start(Heap::kNoGCFlags);
// This big step should be sufficient to mark the whole array.
marking->Step(100 * MB, IncrementalMarking::NO_GC_VIA_STACK_GUARD);
DCHECK(marking->IsComplete() ||
marking->IsReadyToOverApproximateWeakClosure());
}
TEST(DisableInlineAllocation) {
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
CompileRun("function test() {"
" var x = [];"
" for (var i = 0; i < 10; i++) {"
" x[i] = [ {}, [1,2,3], [1,x,3] ];"
" }"
"}"
"function run() {"
" %OptimizeFunctionOnNextCall(test);"
" test();"
" %DeoptimizeFunction(test);"
"}");
// Warm-up with inline allocation enabled.
CompileRun("test(); test(); run();");
// Run test with inline allocation disabled.
CcTest::heap()->DisableInlineAllocation();
CompileRun("run()");
// Run test with inline allocation re-enabled.
CcTest::heap()->EnableInlineAllocation();
CompileRun("run()");
}
static int AllocationSitesCount(Heap* heap) {
int count = 0;
for (Object* site = heap->allocation_sites_list();
!(site->IsUndefined());
site = AllocationSite::cast(site)->weak_next()) {
count++;
}
return count;
}
TEST(EnsureAllocationSiteDependentCodesProcessed) {
if (i::FLAG_always_opt || !i::FLAG_crankshaft) return;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
v8::internal::Heap* heap = CcTest::heap();
GlobalHandles* global_handles = isolate->global_handles();
if (!isolate->use_crankshaft()) return;
// The allocation site at the head of the list is ours.
Handle<AllocationSite> site;
{
LocalContext context;
v8::HandleScope scope(context->GetIsolate());
int count = AllocationSitesCount(heap);
CompileRun("var bar = function() { return (new Array()); };"
"var a = bar();"
"bar();"
"bar();");
// One allocation site should have been created.
int new_count = AllocationSitesCount(heap);
CHECK_EQ(new_count, (count + 1));
site = Handle<AllocationSite>::cast(
global_handles->Create(
AllocationSite::cast(heap->allocation_sites_list())));
CompileRun("%OptimizeFunctionOnNextCall(bar); bar();");
DependentCode::GroupStartIndexes starts(site->dependent_code());
CHECK_GE(starts.number_of_entries(), 1);
int index = starts.at(DependentCode::kAllocationSiteTransitionChangedGroup);
CHECK(site->dependent_code()->object_at(index)->IsWeakCell());
Code* function_bar = Code::cast(
WeakCell::cast(site->dependent_code()->object_at(index))->value());
Handle<JSFunction> bar_handle =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("bar"))));
CHECK_EQ(bar_handle->code(), function_bar);
}
// Now make sure that a gc should get rid of the function, even though we
// still have the allocation site alive.
for (int i = 0; i < 4; i++) {
heap->CollectAllGarbage();
}
// The site still exists because of our global handle, but the code is no
// longer referred to by dependent_code().
DependentCode::GroupStartIndexes starts(site->dependent_code());
int index = starts.at(DependentCode::kAllocationSiteTransitionChangedGroup);
CHECK(site->dependent_code()->object_at(index)->IsWeakCell() &&
WeakCell::cast(site->dependent_code()->object_at(index))->cleared());
}
TEST(CellsInOptimizedCodeAreWeak) {
if (i::FLAG_always_opt || !i::FLAG_crankshaft) return;
i::FLAG_weak_embedded_objects_in_optimized_code = true;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
v8::internal::Heap* heap = CcTest::heap();
if (!isolate->use_crankshaft()) return;
HandleScope outer_scope(heap->isolate());
Handle<Code> code;
{
LocalContext context;
HandleScope scope(heap->isolate());
CompileRun("bar = (function() {"
" function bar() {"
" return foo(1);"
" };"
" var foo = function(x) { with (x) { return 1 + x; } };"
" bar(foo);"
" bar(foo);"
" bar(foo);"
" %OptimizeFunctionOnNextCall(bar);"
" bar(foo);"
" return bar;})();");
Handle<JSFunction> bar =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("bar"))));
code = scope.CloseAndEscape(Handle<Code>(bar->code()));
}
// Now make sure that a gc should get rid of the function
for (int i = 0; i < 4; i++) {
heap->CollectAllGarbage();
}
DCHECK(code->marked_for_deoptimization());
}
TEST(ObjectsInOptimizedCodeAreWeak) {
if (i::FLAG_always_opt || !i::FLAG_crankshaft) return;
i::FLAG_weak_embedded_objects_in_optimized_code = true;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
v8::internal::Heap* heap = CcTest::heap();
if (!isolate->use_crankshaft()) return;
HandleScope outer_scope(heap->isolate());
Handle<Code> code;
{
LocalContext context;
HandleScope scope(heap->isolate());
CompileRun("function bar() {"
" return foo(1);"
"};"
"function foo(x) { with (x) { return 1 + x; } };"
"bar();"
"bar();"
"bar();"
"%OptimizeFunctionOnNextCall(bar);"
"bar();");
Handle<JSFunction> bar =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("bar"))));
code = scope.CloseAndEscape(Handle<Code>(bar->code()));
}
// Now make sure that a gc should get rid of the function
for (int i = 0; i < 4; i++) {
heap->CollectAllGarbage();
}
DCHECK(code->marked_for_deoptimization());
}
TEST(NoWeakHashTableLeakWithIncrementalMarking) {
if (i::FLAG_always_opt || !i::FLAG_crankshaft) return;
if (!i::FLAG_incremental_marking) return;
i::FLAG_weak_embedded_objects_in_optimized_code = true;
i::FLAG_allow_natives_syntax = true;
i::FLAG_compilation_cache = false;
i::FLAG_retain_maps_for_n_gc = 0;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
// Do not run for no-snap builds.
if (!i::Snapshot::HaveASnapshotToStartFrom(isolate)) return;
v8::internal::Heap* heap = CcTest::heap();
// Get a clean slate regarding optimized functions on the heap.
i::Deoptimizer::DeoptimizeAll(isolate);
heap->CollectAllGarbage();
if (!isolate->use_crankshaft()) return;
HandleScope outer_scope(heap->isolate());
for (int i = 0; i < 3; i++) {
SimulateIncrementalMarking(heap);
{
LocalContext context;
HandleScope scope(heap->isolate());
EmbeddedVector<char, 256> source;
SNPrintF(source,
"function bar%d() {"
" return foo%d(1);"
"};"
"function foo%d(x) { with (x) { return 1 + x; } };"
"bar%d();"
"bar%d();"
"bar%d();"
"%%OptimizeFunctionOnNextCall(bar%d);"
"bar%d();",
i, i, i, i, i, i, i, i);
CompileRun(source.start());
}
heap->CollectAllGarbage();
}
int elements = 0;
if (heap->weak_object_to_code_table()->IsHashTable()) {
WeakHashTable* t = WeakHashTable::cast(heap->weak_object_to_code_table());
elements = t->NumberOfElements();
}
CHECK_EQ(0, elements);
}
static Handle<JSFunction> OptimizeDummyFunction(const char* name) {
EmbeddedVector<char, 256> source;
SNPrintF(source,
"function %s() { return 0; }"
"%s(); %s();"
"%%OptimizeFunctionOnNextCall(%s);"
"%s();", name, name, name, name, name);
CompileRun(source.start());
Handle<JSFunction> fun =
v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str(name))));
return fun;
}
static int GetCodeChainLength(Code* code) {
int result = 0;
while (code->next_code_link()->IsCode()) {
result++;
code = Code::cast(code->next_code_link());
}
return result;
}
TEST(NextCodeLinkIsWeak) {
i::FLAG_always_opt = false;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
v8::internal::Heap* heap = CcTest::heap();
if (!isolate->use_crankshaft()) return;
HandleScope outer_scope(heap->isolate());
Handle<Code> code;
heap->CollectAllAvailableGarbage();
int code_chain_length_before, code_chain_length_after;
{
HandleScope scope(heap->isolate());
Handle<JSFunction> mortal = OptimizeDummyFunction("mortal");
Handle<JSFunction> immortal = OptimizeDummyFunction("immortal");
CHECK_EQ(immortal->code()->next_code_link(), mortal->code());
code_chain_length_before = GetCodeChainLength(immortal->code());
// Keep the immortal code and let the mortal code die.
code = scope.CloseAndEscape(Handle<Code>(immortal->code()));
CompileRun("mortal = null; immortal = null;");
}
heap->CollectAllAvailableGarbage();
// Now mortal code should be dead.
code_chain_length_after = GetCodeChainLength(*code);
CHECK_EQ(code_chain_length_before - 1, code_chain_length_after);
}
static Handle<Code> DummyOptimizedCode(Isolate* isolate) {
i::byte buffer[i::Assembler::kMinimalBufferSize];
MacroAssembler masm(isolate, buffer, sizeof(buffer));
CodeDesc desc;
masm.Push(isolate->factory()->undefined_value());
masm.Drop(1);
masm.GetCode(&desc);
Handle<Object> undefined(isolate->heap()->undefined_value(), isolate);
Handle<Code> code = isolate->factory()->NewCode(
desc, Code::ComputeFlags(Code::OPTIMIZED_FUNCTION), undefined);
CHECK(code->IsCode());
return code;
}
TEST(NextCodeLinkIsWeak2) {
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
v8::internal::Heap* heap = CcTest::heap();
if (!isolate->use_crankshaft()) return;
HandleScope outer_scope(heap->isolate());
heap->CollectAllAvailableGarbage();
Handle<Context> context(Context::cast(heap->native_contexts_list()), isolate);
Handle<Code> new_head;
Handle<Object> old_head(context->get(Context::OPTIMIZED_CODE_LIST), isolate);
{
HandleScope scope(heap->isolate());
Handle<Code> immortal = DummyOptimizedCode(isolate);
Handle<Code> mortal = DummyOptimizedCode(isolate);
mortal->set_next_code_link(*old_head);
immortal->set_next_code_link(*mortal);
context->set(Context::OPTIMIZED_CODE_LIST, *immortal);
new_head = scope.CloseAndEscape(immortal);
}
heap->CollectAllAvailableGarbage();
// Now mortal code should be dead.
CHECK_EQ(*old_head, new_head->next_code_link());
}
static bool weak_ic_cleared = false;
static void ClearWeakIC(
const v8::WeakCallbackInfo<v8::Persistent<v8::Object>>& data) {
printf("clear weak is called\n");
weak_ic_cleared = true;
data.GetParameter()->Reset();
}
TEST(WeakFunctionInConstructor) {
if (i::FLAG_always_opt) return;
i::FLAG_stress_compaction = false;
CcTest::InitializeVM();
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
CompileRun(
"function createObj(obj) {"
" return new obj();"
"}");
Handle<JSFunction> createObj =
v8::Utils::OpenHandle(*v8::Handle<v8::Function>::Cast(
CcTest::global()->Get(v8_str("createObj"))));
v8::Persistent<v8::Object> garbage;
{
v8::HandleScope scope(isolate);
const char* source =
" (function() {"
" function hat() { this.x = 5; }"
" createObj(hat);"
" createObj(hat);"
" return hat;"
" })();";
garbage.Reset(isolate, CompileRun(source)->ToObject(isolate));
}
weak_ic_cleared = false;
garbage.SetWeak(&garbage, &ClearWeakIC, v8::WeakCallbackType::kParameter);
Heap* heap = CcTest::i_isolate()->heap();
heap->CollectAllGarbage();
CHECK(weak_ic_cleared);
// We've determined the constructor in createObj has had it's weak cell
// cleared. Now, verify that one additional call with a new function
// allows monomorphicity.
Handle<TypeFeedbackVector> feedback_vector = Handle<TypeFeedbackVector>(
createObj->shared()->feedback_vector(), CcTest::i_isolate());
for (int i = 0; i < 20; i++) {
Object* slot_value = feedback_vector->Get(FeedbackVectorSlot(0));
CHECK(slot_value->IsWeakCell());
if (WeakCell::cast(slot_value)->cleared()) break;
heap->CollectAllGarbage();
}
Object* slot_value = feedback_vector->Get(FeedbackVectorSlot(0));
CHECK(slot_value->IsWeakCell() && WeakCell::cast(slot_value)->cleared());
CompileRun(
"function coat() { this.x = 6; }"
"createObj(coat);");
slot_value = feedback_vector->Get(FeedbackVectorSlot(0));
CHECK(slot_value->IsWeakCell() && !WeakCell::cast(slot_value)->cleared());
}
// Checks that the value returned by execution of the source is weak.
void CheckWeakness(const char* source) {
i::FLAG_stress_compaction = false;
CcTest::InitializeVM();
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Persistent<v8::Object> garbage;
{
v8::HandleScope scope(isolate);
garbage.Reset(isolate, CompileRun(source)->ToObject(isolate));
}
weak_ic_cleared = false;
garbage.SetWeak(&garbage, &ClearWeakIC, v8::WeakCallbackType::kParameter);
Heap* heap = CcTest::i_isolate()->heap();
heap->CollectAllGarbage();
CHECK(weak_ic_cleared);
}
// Each of the following "weak IC" tests creates an IC that embeds a map with
// the prototype pointing to _proto_ and checks that the _proto_ dies on GC.
TEST(WeakMapInMonomorphicLoadIC) {
CheckWeakness("function loadIC(obj) {"
" return obj.name;"
"}"
" (function() {"
" var proto = {'name' : 'weak'};"
" var obj = Object.create(proto);"
" loadIC(obj);"
" loadIC(obj);"
" loadIC(obj);"
" return proto;"
" })();");
}
TEST(WeakMapInPolymorphicLoadIC) {
CheckWeakness(
"function loadIC(obj) {"
" return obj.name;"
"}"
" (function() {"
" var proto = {'name' : 'weak'};"
" var obj = Object.create(proto);"
" loadIC(obj);"
" loadIC(obj);"
" loadIC(obj);"
" var poly = Object.create(proto);"
" poly.x = true;"
" loadIC(poly);"
" return proto;"
" })();");
}
TEST(WeakMapInMonomorphicKeyedLoadIC) {
CheckWeakness("function keyedLoadIC(obj, field) {"
" return obj[field];"
"}"
" (function() {"
" var proto = {'name' : 'weak'};"
" var obj = Object.create(proto);"
" keyedLoadIC(obj, 'name');"
" keyedLoadIC(obj, 'name');"
" keyedLoadIC(obj, 'name');"
" return proto;"
" })();");
}
TEST(WeakMapInPolymorphicKeyedLoadIC) {
CheckWeakness(
"function keyedLoadIC(obj, field) {"
" return obj[field];"
"}"
" (function() {"
" var proto = {'name' : 'weak'};"
" var obj = Object.create(proto);"
" keyedLoadIC(obj, 'name');"
" keyedLoadIC(obj, 'name');"
" keyedLoadIC(obj, 'name');"
" var poly = Object.create(proto);"
" poly.x = true;"
" keyedLoadIC(poly, 'name');"
" return proto;"
" })();");
}
TEST(WeakMapInMonomorphicStoreIC) {
CheckWeakness("function storeIC(obj, value) {"
" obj.name = value;"
"}"
" (function() {"
" var proto = {'name' : 'weak'};"
" var obj = Object.create(proto);"
" storeIC(obj, 'x');"
" storeIC(obj, 'x');"
" storeIC(obj, 'x');"
" return proto;"
" })();");
}
TEST(WeakMapInPolymorphicStoreIC) {
CheckWeakness(
"function storeIC(obj, value) {"
" obj.name = value;"
"}"
" (function() {"
" var proto = {'name' : 'weak'};"
" var obj = Object.create(proto);"
" storeIC(obj, 'x');"
" storeIC(obj, 'x');"
" storeIC(obj, 'x');"
" var poly = Object.create(proto);"
" poly.x = true;"
" storeIC(poly, 'x');"
" return proto;"
" })();");
}
TEST(WeakMapInMonomorphicKeyedStoreIC) {
CheckWeakness("function keyedStoreIC(obj, field, value) {"
" obj[field] = value;"
"}"
" (function() {"
" var proto = {'name' : 'weak'};"
" var obj = Object.create(proto);"
" keyedStoreIC(obj, 'x');"
" keyedStoreIC(obj, 'x');"
" keyedStoreIC(obj, 'x');"
" return proto;"
" })();");
}
TEST(WeakMapInPolymorphicKeyedStoreIC) {
CheckWeakness(
"function keyedStoreIC(obj, field, value) {"
" obj[field] = value;"
"}"
" (function() {"
" var proto = {'name' : 'weak'};"
" var obj = Object.create(proto);"
" keyedStoreIC(obj, 'x');"
" keyedStoreIC(obj, 'x');"
" keyedStoreIC(obj, 'x');"
" var poly = Object.create(proto);"
" poly.x = true;"
" keyedStoreIC(poly, 'x');"
" return proto;"
" })();");
}
TEST(WeakMapInMonomorphicCompareNilIC) {
CheckWeakness("function compareNilIC(obj) {"
" return obj == null;"
"}"
" (function() {"
" var proto = {'name' : 'weak'};"
" var obj = Object.create(proto);"
" compareNilIC(obj);"
" compareNilIC(obj);"
" compareNilIC(obj);"
" return proto;"
" })();");
}
Handle<JSFunction> GetFunctionByName(Isolate* isolate, const char* name) {
Handle<String> str = isolate->factory()->InternalizeUtf8String(name);
Handle<Object> obj =
Object::GetProperty(isolate->global_object(), str).ToHandleChecked();
return Handle<JSFunction>::cast(obj);
}
void CheckIC(Code* code, Code::Kind kind, SharedFunctionInfo* shared,
int ic_slot, InlineCacheState state) {
if (kind == Code::LOAD_IC || kind == Code::KEYED_LOAD_IC ||
kind == Code::CALL_IC) {
TypeFeedbackVector* vector = shared->feedback_vector();
FeedbackVectorICSlot slot(ic_slot);
if (kind == Code::LOAD_IC) {
LoadICNexus nexus(vector, slot);
CHECK_EQ(nexus.StateFromFeedback(), state);
} else if (kind == Code::KEYED_LOAD_IC) {
KeyedLoadICNexus nexus(vector, slot);
CHECK_EQ(nexus.StateFromFeedback(), state);
} else if (kind == Code::CALL_IC) {
CallICNexus nexus(vector, slot);
CHECK_EQ(nexus.StateFromFeedback(), state);
}
} else {
Code* ic = FindFirstIC(code, kind);
CHECK(ic->is_inline_cache_stub());
CHECK(ic->ic_state() == state);
}
}
TEST(MonomorphicStaysMonomorphicAfterGC) {
if (FLAG_always_opt) return;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
v8::HandleScope scope(CcTest::isolate());
CompileRun(
"function loadIC(obj) {"
" return obj.name;"
"}"
"function testIC() {"
" var proto = {'name' : 'weak'};"
" var obj = Object.create(proto);"
" loadIC(obj);"
" loadIC(obj);"
" loadIC(obj);"
" return proto;"
"};");
Handle<JSFunction> loadIC = GetFunctionByName(isolate, "loadIC");
{
v8::HandleScope scope(CcTest::isolate());
CompileRun("(testIC())");
}
heap->CollectAllGarbage();
CheckIC(loadIC->code(), Code::LOAD_IC, loadIC->shared(), 0, MONOMORPHIC);
{
v8::HandleScope scope(CcTest::isolate());
CompileRun("(testIC())");
}
CheckIC(loadIC->code(), Code::LOAD_IC, loadIC->shared(), 0, MONOMORPHIC);
}
TEST(PolymorphicStaysPolymorphicAfterGC) {
if (FLAG_always_opt) return;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
v8::HandleScope scope(CcTest::isolate());
CompileRun(
"function loadIC(obj) {"
" return obj.name;"
"}"
"function testIC() {"
" var proto = {'name' : 'weak'};"
" var obj = Object.create(proto);"
" loadIC(obj);"
" loadIC(obj);"
" loadIC(obj);"
" var poly = Object.create(proto);"
" poly.x = true;"
" loadIC(poly);"
" return proto;"
"};");
Handle<JSFunction> loadIC = GetFunctionByName(isolate, "loadIC");
{
v8::HandleScope scope(CcTest::isolate());
CompileRun("(testIC())");
}
heap->CollectAllGarbage();
CheckIC(loadIC->code(), Code::LOAD_IC, loadIC->shared(), 0, POLYMORPHIC);
{
v8::HandleScope scope(CcTest::isolate());
CompileRun("(testIC())");
}
CheckIC(loadIC->code(), Code::LOAD_IC, loadIC->shared(), 0, POLYMORPHIC);
}
TEST(WeakCell) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
v8::internal::Heap* heap = CcTest::heap();
v8::internal::Factory* factory = isolate->factory();
HandleScope outer_scope(isolate);
Handle<WeakCell> weak_cell1;
{
HandleScope inner_scope(isolate);
Handle<HeapObject> value = factory->NewFixedArray(1, NOT_TENURED);
weak_cell1 = inner_scope.CloseAndEscape(factory->NewWeakCell(value));
}
Handle<FixedArray> survivor = factory->NewFixedArray(1, NOT_TENURED);
Handle<WeakCell> weak_cell2;
{
HandleScope inner_scope(isolate);
weak_cell2 = inner_scope.CloseAndEscape(factory->NewWeakCell(survivor));
}
CHECK(weak_cell1->value()->IsFixedArray());
CHECK_EQ(*survivor, weak_cell2->value());
heap->CollectGarbage(NEW_SPACE);
CHECK(weak_cell1->value()->IsFixedArray());
CHECK_EQ(*survivor, weak_cell2->value());
heap->CollectGarbage(NEW_SPACE);
CHECK(weak_cell1->value()->IsFixedArray());
CHECK_EQ(*survivor, weak_cell2->value());
heap->CollectAllAvailableGarbage();
CHECK(weak_cell1->cleared());
CHECK_EQ(*survivor, weak_cell2->value());
}
TEST(WeakCellsWithIncrementalMarking) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
v8::internal::Heap* heap = CcTest::heap();
v8::internal::Factory* factory = isolate->factory();
const int N = 16;
HandleScope outer_scope(isolate);
Handle<FixedArray> survivor = factory->NewFixedArray(1, NOT_TENURED);
Handle<WeakCell> weak_cells[N];
for (int i = 0; i < N; i++) {
HandleScope inner_scope(isolate);
Handle<HeapObject> value =
i == 0 ? survivor : factory->NewFixedArray(1, NOT_TENURED);
Handle<WeakCell> weak_cell = factory->NewWeakCell(value);
CHECK(weak_cell->value()->IsFixedArray());
IncrementalMarking* marking = heap->incremental_marking();
if (marking->IsStopped()) marking->Start(Heap::kNoGCFlags);
marking->Step(128, IncrementalMarking::NO_GC_VIA_STACK_GUARD);
heap->CollectGarbage(NEW_SPACE);
CHECK(weak_cell->value()->IsFixedArray());
weak_cells[i] = inner_scope.CloseAndEscape(weak_cell);
}
heap->CollectAllGarbage();
CHECK_EQ(*survivor, weak_cells[0]->value());
for (int i = 1; i < N; i++) {
CHECK(weak_cells[i]->cleared());
}
}
#ifdef DEBUG
TEST(AddInstructionChangesNewSpacePromotion) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_expose_gc = true;
i::FLAG_stress_compaction = true;
i::FLAG_gc_interval = 1000;
CcTest::InitializeVM();
if (!i::FLAG_allocation_site_pretenuring) return;
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
CompileRun(
"function add(a, b) {"
" return a + b;"
"}"
"add(1, 2);"
"add(\"a\", \"b\");"
"var oldSpaceObject;"
"gc();"
"function crash(x) {"
" var object = {a: null, b: null};"
" var result = add(1.5, x | 0);"
" object.a = result;"
" oldSpaceObject = object;"
" return object;"
"}"
"crash(1);"
"crash(1);"
"%OptimizeFunctionOnNextCall(crash);"
"crash(1);");
v8::Handle<v8::Object> global = CcTest::global();
v8::Handle<v8::Function> g =
v8::Handle<v8::Function>::Cast(global->Get(v8_str("crash")));
v8::Handle<v8::Value> args1[] = { v8_num(1) };
heap->DisableInlineAllocation();
heap->set_allocation_timeout(1);
g->Call(global, 1, args1);
heap->CollectAllGarbage();
}
void OnFatalErrorExpectOOM(const char* location, const char* message) {
// Exit with 0 if the location matches our expectation.
exit(strcmp(location, "CALL_AND_RETRY_LAST"));
}
TEST(CEntryStubOOM) {
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
v8::V8::SetFatalErrorHandler(OnFatalErrorExpectOOM);
v8::Handle<v8::Value> result = CompileRun(
"%SetFlags('--gc-interval=1');"
"var a = [];"
"a.__proto__ = [];"
"a.unshift(1)");
CHECK(result->IsNumber());
}
#endif // DEBUG
static void InterruptCallback357137(v8::Isolate* isolate, void* data) { }
static void RequestInterrupt(const v8::FunctionCallbackInfo<v8::Value>& args) {
CcTest::isolate()->RequestInterrupt(&InterruptCallback357137, NULL);
}
TEST(Regress357137) {
CcTest::InitializeVM();
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope hscope(isolate);
v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
global->Set(v8::String::NewFromUtf8(isolate, "interrupt"),
v8::FunctionTemplate::New(isolate, RequestInterrupt));
v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global);
DCHECK(!context.IsEmpty());
v8::Context::Scope cscope(context);
v8::Local<v8::Value> result = CompileRun(
"var locals = '';"
"for (var i = 0; i < 512; i++) locals += 'var v' + i + '= 42;';"
"eval('function f() {' + locals + 'return function() { return v0; }; }');"
"interrupt();" // This triggers a fake stack overflow in f.
"f()()");
CHECK_EQ(42.0, result->ToNumber(isolate)->Value());
}
TEST(Regress507979) {
const int kFixedArrayLen = 10;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
HandleScope handle_scope(isolate);
Handle<FixedArray> o1 = isolate->factory()->NewFixedArray(kFixedArrayLen);
Handle<FixedArray> o2 = isolate->factory()->NewFixedArray(kFixedArrayLen);
CHECK(heap->InNewSpace(o1->address()));
CHECK(heap->InNewSpace(o2->address()));
HeapIterator it(heap, i::HeapIterator::kFilterUnreachable);
// Replace parts of an object placed before a live object with a filler. This
// way the filler object shares the mark bits with the following live object.
o1->Shrink(kFixedArrayLen - 1);
for (HeapObject* obj = it.next(); obj != NULL; obj = it.next()) {
// Let's not optimize the loop away.
CHECK(obj->address() != nullptr);
}
}
TEST(ArrayShiftSweeping) {
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
v8::Local<v8::Value> result = CompileRun(
"var array = new Array(40000);"
"var tmp = new Array(100000);"
"array[0] = 10;"
"gc();"
"gc();"
"array.shift();"
"array;");
Handle<JSObject> o =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(result));
CHECK(heap->InOldSpace(o->elements()));
CHECK(heap->InOldSpace(*o));
Page* page = Page::FromAddress(o->elements()->address());
CHECK(page->parallel_sweeping() <= MemoryChunk::SWEEPING_FINALIZE ||
Marking::IsBlack(Marking::MarkBitFrom(o->elements())));
}
UNINITIALIZED_TEST(PromotionQueue) {
i::FLAG_expose_gc = true;
i::FLAG_max_semi_space_size = 2 * (Page::kPageSize / MB);
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(create_params);
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Context::New(isolate)->Enter();
Heap* heap = i_isolate->heap();
NewSpace* new_space = heap->new_space();
// In this test we will try to overwrite the promotion queue which is at the
// end of to-space. To actually make that possible, we need at least two
// semi-space pages and take advantage of fragmentation.
// (1) Grow semi-space to two pages.
// (2) Create a few small long living objects and call the scavenger to
// move them to the other semi-space.
// (3) Create a huge object, i.e., remainder of first semi-space page and
// create another huge object which should be of maximum allocatable memory
// size of the second semi-space page.
// (4) Call the scavenger again.
// What will happen is: the scavenger will promote the objects created in
// (2) and will create promotion queue entries at the end of the second
// semi-space page during the next scavenge when it promotes the objects to
// the old generation. The first allocation of (3) will fill up the first
// semi-space page. The second allocation in (3) will not fit into the
// first semi-space page, but it will overwrite the promotion queue which
// are in the second semi-space page. If the right guards are in place, the
// promotion queue will be evacuated in that case.
// Grow the semi-space to two pages to make semi-space copy overwrite the
// promotion queue, which will be at the end of the second page.
intptr_t old_capacity = new_space->TotalCapacity();
// If we are in a low memory config, we can't grow to two pages and we can't
// run this test. This also means the issue we are testing cannot arise, as
// there is no fragmentation.
if (new_space->IsAtMaximumCapacity()) return;
new_space->Grow();
CHECK(new_space->IsAtMaximumCapacity());
CHECK(2 * old_capacity == new_space->TotalCapacity());
// Call the scavenger two times to get an empty new space
heap->CollectGarbage(NEW_SPACE);
heap->CollectGarbage(NEW_SPACE);
// First create a few objects which will survive a scavenge, and will get
// promoted to the old generation later on. These objects will create
// promotion queue entries at the end of the second semi-space page.
const int number_handles = 12;
Handle<FixedArray> handles[number_handles];
for (int i = 0; i < number_handles; i++) {
handles[i] = i_isolate->factory()->NewFixedArray(1, NOT_TENURED);
}
heap->CollectGarbage(NEW_SPACE);
// Create the first huge object which will exactly fit the first semi-space
// page.
int new_linear_size =
static_cast<int>(*heap->new_space()->allocation_limit_address() -
*heap->new_space()->allocation_top_address());
int length = new_linear_size / kPointerSize - FixedArray::kHeaderSize;
Handle<FixedArray> first =
i_isolate->factory()->NewFixedArray(length, NOT_TENURED);
CHECK(heap->InNewSpace(*first));
// Create the second huge object of maximum allocatable second semi-space
// page size.
new_linear_size =
static_cast<int>(*heap->new_space()->allocation_limit_address() -
*heap->new_space()->allocation_top_address());
length = Page::kMaxRegularHeapObjectSize / kPointerSize -
FixedArray::kHeaderSize;
Handle<FixedArray> second =
i_isolate->factory()->NewFixedArray(length, NOT_TENURED);
CHECK(heap->InNewSpace(*second));
// This scavenge will corrupt memory if the promotion queue is not
// evacuated.
heap->CollectGarbage(NEW_SPACE);
}
isolate->Dispose();
}
TEST(Regress388880) {
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
Heap* heap = isolate->heap();
Handle<Map> map1 = Map::Create(isolate, 1);
Handle<Map> map2 =
Map::CopyWithField(map1, factory->NewStringFromStaticChars("foo"),
HeapType::Any(isolate), NONE, Representation::Tagged(),
OMIT_TRANSITION).ToHandleChecked();
int desired_offset = Page::kPageSize - map1->instance_size();
// Allocate fixed array in old pointer space so, that object allocated
// afterwards would end at the end of the page.
{
SimulateFullSpace(heap->old_space());
int padding_size = desired_offset - Page::kObjectStartOffset;
int padding_array_length =
(padding_size - FixedArray::kHeaderSize) / kPointerSize;
Handle<FixedArray> temp2 =
factory->NewFixedArray(padding_array_length, TENURED);
Page* page = Page::FromAddress(temp2->address());
CHECK_EQ(Page::kObjectStartOffset, page->Offset(temp2->address()));
}
Handle<JSObject> o = factory->NewJSObjectFromMap(map1, TENURED);
o->set_properties(*factory->empty_fixed_array());
// Ensure that the object allocated where we need it.
Page* page = Page::FromAddress(o->address());
CHECK_EQ(desired_offset, page->Offset(o->address()));
// Now we have an object right at the end of the page.
// Enable incremental marking to trigger actions in Heap::AdjustLiveBytes()
// that would cause crash.
IncrementalMarking* marking = CcTest::heap()->incremental_marking();
marking->Stop();
marking->Start(Heap::kNoGCFlags);
CHECK(marking->IsMarking());
// Now everything is set up for crashing in JSObject::MigrateFastToFast()
// when it calls heap->AdjustLiveBytes(...).
JSObject::MigrateToMap(o, map2);
}
TEST(Regress3631) {
i::FLAG_expose_gc = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
IncrementalMarking* marking = CcTest::heap()->incremental_marking();
v8::Local<v8::Value> result = CompileRun(
"var weak_map = new WeakMap();"
"var future_keys = [];"
"for (var i = 0; i < 50; i++) {"
" var key = {'k' : i + 0.1};"
" weak_map.set(key, 1);"
" future_keys.push({'x' : i + 0.2});"
"}"
"weak_map");
if (marking->IsStopped()) {
marking->Start(Heap::kNoGCFlags);
}
// Incrementally mark the backing store.
Handle<JSObject> obj =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(result));
Handle<JSWeakCollection> weak_map(reinterpret_cast<JSWeakCollection*>(*obj));
while (!Marking::IsBlack(
Marking::MarkBitFrom(HeapObject::cast(weak_map->table()))) &&
!marking->IsStopped()) {
marking->Step(MB, IncrementalMarking::NO_GC_VIA_STACK_GUARD);
}
// Stash the backing store in a handle.
Handle<Object> save(weak_map->table(), isolate);
// The following line will update the backing store.
CompileRun(
"for (var i = 0; i < 50; i++) {"
" weak_map.set(future_keys[i], i);"
"}");
heap->incremental_marking()->set_should_hurry(true);
heap->CollectGarbage(OLD_SPACE);
}
TEST(Regress442710) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
HandleScope sc(isolate);
Handle<GlobalObject> global(CcTest::i_isolate()->context()->global_object());
Handle<JSArray> array = factory->NewJSArray(2);
Handle<String> name = factory->InternalizeUtf8String("testArray");
JSReceiver::SetProperty(global, name, array, SLOPPY).Check();
CompileRun("testArray[0] = 1; testArray[1] = 2; testArray.shift();");
heap->CollectGarbage(OLD_SPACE);
}
TEST(NumberStringCacheSize) {
// Test that the number-string cache has not been resized in the snapshot.
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
if (!isolate->snapshot_available()) return;
Heap* heap = isolate->heap();
CHECK_EQ(TestHeap::kInitialNumberStringCacheSize * 2,
heap->number_string_cache()->length());
}
TEST(Regress3877) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
HandleScope scope(isolate);
CompileRun("function cls() { this.x = 10; }");
Handle<WeakCell> weak_prototype;
{
HandleScope inner_scope(isolate);
v8::Local<v8::Value> result = CompileRun("cls.prototype");
Handle<JSObject> proto =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(result));
weak_prototype = inner_scope.CloseAndEscape(factory->NewWeakCell(proto));
}
CHECK(!weak_prototype->cleared());
CompileRun(
"var a = { };"
"a.x = new cls();"
"cls.prototype = null;");
for (int i = 0; i < 4; i++) {
heap->CollectAllGarbage();
}
// The map of a.x keeps prototype alive
CHECK(!weak_prototype->cleared());
// Change the map of a.x and make the previous map garbage collectable.
CompileRun("a.x.__proto__ = {};");
for (int i = 0; i < 4; i++) {
heap->CollectAllGarbage();
}
CHECK(weak_prototype->cleared());
}
Handle<WeakCell> AddRetainedMap(Isolate* isolate, Heap* heap) {
HandleScope inner_scope(isolate);
Handle<Map> map = Map::Create(isolate, 1);
v8::Local<v8::Value> result =
CompileRun("(function () { return {x : 10}; })();");
Handle<JSObject> proto =
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(result));
Map::SetPrototype(map, proto);
heap->AddRetainedMap(map);
return inner_scope.CloseAndEscape(Map::WeakCellForMap(map));
}
void CheckMapRetainingFor(int n) {
FLAG_retain_maps_for_n_gc = n;
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Handle<WeakCell> weak_cell = AddRetainedMap(isolate, heap);
CHECK(!weak_cell->cleared());
for (int i = 0; i < n; i++) {
heap->CollectGarbage(OLD_SPACE);
}
CHECK(!weak_cell->cleared());
heap->CollectGarbage(OLD_SPACE);
CHECK(weak_cell->cleared());
}
TEST(MapRetaining) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
CheckMapRetainingFor(FLAG_retain_maps_for_n_gc);
CheckMapRetainingFor(0);
CheckMapRetainingFor(1);
CheckMapRetainingFor(7);
}
TEST(RegressArrayListGC) {
FLAG_retain_maps_for_n_gc = 1;
FLAG_incremental_marking = 0;
FLAG_gc_global = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
AddRetainedMap(isolate, heap);
Handle<Map> map = Map::Create(isolate, 1);
heap->CollectGarbage(OLD_SPACE);
// Force GC in old space on next addition of retained map.
Map::WeakCellForMap(map);
SimulateFullSpace(CcTest::heap()->new_space());
for (int i = 0; i < 10; i++) {
heap->AddRetainedMap(map);
}
heap->CollectGarbage(OLD_SPACE);
}
#ifdef DEBUG
TEST(PathTracer) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Value> result = CompileRun("'abc'");
Handle<Object> o = v8::Utils::OpenHandle(*result);
CcTest::i_isolate()->heap()->TracePathToObject(*o);
}
#endif // DEBUG
TEST(WritableVsImmortalRoots) {
for (int i = 0; i < Heap::kStrongRootListLength; ++i) {
Heap::RootListIndex root_index = static_cast<Heap::RootListIndex>(i);
bool writable = Heap::RootCanBeWrittenAfterInitialization(root_index);
bool immortal = Heap::RootIsImmortalImmovable(root_index);
// A root value can be writable, immortal, or neither, but not both.
CHECK(!immortal || !writable);
}
}
static void TestRightTrimFixedTypedArray(i::ExternalArrayType type,
int initial_length,
int elements_to_trim) {
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
Heap* heap = isolate->heap();
Handle<FixedTypedArrayBase> array =
factory->NewFixedTypedArray(initial_length, type, true);
int old_size = array->size();
heap->RightTrimFixedArray<Heap::CONCURRENT_TO_SWEEPER>(*array,
elements_to_trim);
// Check that free space filler is at the right place and did not smash the
// array header.
CHECK(array->IsFixedArrayBase());
CHECK_EQ(initial_length - elements_to_trim, array->length());
int new_size = array->size();
if (new_size != old_size) {
// Free space filler should be created in this case.
Address next_obj_address = array->address() + array->size();
CHECK(HeapObject::FromAddress(next_obj_address)->IsFiller());
}
heap->CollectAllAvailableGarbage();
}
TEST(Regress472513) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
// The combination of type/initial_length/elements_to_trim triggered
// typed array header smashing with free space filler (crbug/472513).
// 64-bit cases.
TestRightTrimFixedTypedArray(i::kExternalUint8Array, 32, 6);
TestRightTrimFixedTypedArray(i::kExternalUint8Array, 32 - 7, 6);
TestRightTrimFixedTypedArray(i::kExternalUint16Array, 16, 6);
TestRightTrimFixedTypedArray(i::kExternalUint16Array, 16 - 3, 6);
TestRightTrimFixedTypedArray(i::kExternalUint32Array, 8, 6);
TestRightTrimFixedTypedArray(i::kExternalUint32Array, 8 - 1, 6);
// 32-bit cases.
TestRightTrimFixedTypedArray(i::kExternalUint8Array, 16, 3);
TestRightTrimFixedTypedArray(i::kExternalUint8Array, 16 - 3, 3);
TestRightTrimFixedTypedArray(i::kExternalUint16Array, 8, 3);
TestRightTrimFixedTypedArray(i::kExternalUint16Array, 8 - 1, 3);
TestRightTrimFixedTypedArray(i::kExternalUint32Array, 4, 3);
}
TEST(WeakFixedArray) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Handle<HeapNumber> number = CcTest::i_isolate()->factory()->NewHeapNumber(1);
Handle<WeakFixedArray> array = WeakFixedArray::Add(Handle<Object>(), number);
array->Remove(number);
array->Compact<WeakFixedArray::NullCallback>();
WeakFixedArray::Add(array, number);
}
TEST(PreprocessStackTrace) {
// Do not automatically trigger early GC.
FLAG_gc_interval = -1;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
v8::TryCatch try_catch(CcTest::isolate());
CompileRun("throw new Error();");
CHECK(try_catch.HasCaught());
Isolate* isolate = CcTest::i_isolate();
Handle<Object> exception = v8::Utils::OpenHandle(*try_catch.Exception());
Handle<Name> key = isolate->factory()->stack_trace_symbol();
Handle<Object> stack_trace =
JSObject::GetProperty(exception, key).ToHandleChecked();
Handle<Object> code =
Object::GetElement(isolate, stack_trace, 3).ToHandleChecked();
CHECK(code->IsCode());
isolate->heap()->CollectAllAvailableGarbage("stack trace preprocessing");
Handle<Object> pos =
Object::GetElement(isolate, stack_trace, 3).ToHandleChecked();
CHECK(pos->IsSmi());
Handle<JSArray> stack_trace_array = Handle<JSArray>::cast(stack_trace);
int array_length = Smi::cast(stack_trace_array->length())->value();
for (int i = 0; i < array_length; i++) {
Handle<Object> element =
Object::GetElement(isolate, stack_trace, i).ToHandleChecked();
CHECK(!element->IsCode());
}
}
static bool utils_has_been_collected = false;
static void UtilsHasBeenCollected(
const v8::WeakCallbackInfo<v8::Persistent<v8::Object>>& data) {
utils_has_been_collected = true;
data.GetParameter()->Reset();
}
TEST(BootstrappingExports) {
FLAG_expose_natives_as = "natives";
CcTest::InitializeVM();
v8::Isolate* isolate = CcTest::isolate();
if (Snapshot::HaveASnapshotToStartFrom(CcTest::i_isolate())) return;
utils_has_been_collected = false;
v8::Persistent<v8::Object> utils;
{
v8::HandleScope scope(isolate);
v8::Handle<v8::Object> natives =
CcTest::global()->Get(v8_str("natives"))->ToObject(isolate);
utils.Reset(isolate, natives->Get(v8_str("utils"))->ToObject(isolate));
natives->Delete(v8_str("utils"));
}
utils.SetWeak(&utils, UtilsHasBeenCollected,
v8::WeakCallbackType::kParameter);
CcTest::heap()->CollectAllAvailableGarbage("fire weak callbacks");
CHECK(utils_has_been_collected);
}
TEST(Regress1878) {
FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Local<v8::Function> constructor =
v8::Utils::ToLocal(CcTest::i_isolate()->internal_array_function());
CcTest::global()->Set(v8_str("InternalArray"), constructor);
v8::TryCatch try_catch(isolate);
CompileRun(
"var a = Array();"
"for (var i = 0; i < 1000; i++) {"
" var ai = new InternalArray(10000);"
" if (%HaveSameMap(ai, a)) throw Error();"
" if (!%HasFastObjectElements(ai)) throw Error();"
"}"
"for (var i = 0; i < 1000; i++) {"
" var ai = new InternalArray(10000);"
" if (%HaveSameMap(ai, a)) throw Error();"
" if (!%HasFastObjectElements(ai)) throw Error();"
"}");
CHECK(!try_catch.HasCaught());
}
void AllocateInSpace(Isolate* isolate, size_t bytes, AllocationSpace space) {
CHECK(bytes >= FixedArray::kHeaderSize);
CHECK(bytes % kPointerSize == 0);
Factory* factory = isolate->factory();
HandleScope scope(isolate);
AlwaysAllocateScope always_allocate(isolate);
int elements =
static_cast<int>((bytes - FixedArray::kHeaderSize) / kPointerSize);
Handle<FixedArray> array = factory->NewFixedArray(
elements, space == NEW_SPACE ? NOT_TENURED : TENURED);
CHECK((space == NEW_SPACE) == isolate->heap()->InNewSpace(*array));
CHECK_EQ(bytes, static_cast<size_t>(array->Size()));
}
TEST(NewSpaceAllocationCounter) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
size_t counter1 = heap->NewSpaceAllocationCounter();
heap->CollectGarbage(NEW_SPACE);
const size_t kSize = 1024;
AllocateInSpace(isolate, kSize, NEW_SPACE);
size_t counter2 = heap->NewSpaceAllocationCounter();
CHECK_EQ(kSize, counter2 - counter1);
heap->CollectGarbage(NEW_SPACE);
size_t counter3 = heap->NewSpaceAllocationCounter();
CHECK_EQ(0U, counter3 - counter2);
// Test counter overflow.
size_t max_counter = -1;
heap->set_new_space_allocation_counter(max_counter - 10 * kSize);
size_t start = heap->NewSpaceAllocationCounter();
for (int i = 0; i < 20; i++) {
AllocateInSpace(isolate, kSize, NEW_SPACE);
size_t counter = heap->NewSpaceAllocationCounter();
CHECK_EQ(kSize, counter - start);
start = counter;
}
}
TEST(OldSpaceAllocationCounter) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
size_t counter1 = heap->OldGenerationAllocationCounter();
heap->CollectGarbage(NEW_SPACE);
heap->CollectGarbage(NEW_SPACE);
const size_t kSize = 1024;
AllocateInSpace(isolate, kSize, OLD_SPACE);
size_t counter2 = heap->OldGenerationAllocationCounter();
// TODO(ulan): replace all CHECK_LE with CHECK_EQ after v8:4148 is fixed.
CHECK_LE(kSize, counter2 - counter1);
heap->CollectGarbage(NEW_SPACE);
size_t counter3 = heap->OldGenerationAllocationCounter();
CHECK_EQ(0u, counter3 - counter2);
AllocateInSpace(isolate, kSize, OLD_SPACE);
heap->CollectGarbage(OLD_SPACE);
size_t counter4 = heap->OldGenerationAllocationCounter();
CHECK_LE(kSize, counter4 - counter3);
// Test counter overflow.
size_t max_counter = -1;
heap->set_old_generation_allocation_counter(max_counter - 10 * kSize);
size_t start = heap->OldGenerationAllocationCounter();
for (int i = 0; i < 20; i++) {
AllocateInSpace(isolate, kSize, OLD_SPACE);
size_t counter = heap->OldGenerationAllocationCounter();
CHECK_LE(kSize, counter - start);
start = counter;
}
}
TEST(NewSpaceAllocationThroughput) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
GCTracer* tracer = heap->tracer();
int time1 = 100;
size_t counter1 = 1000;
tracer->SampleAllocation(time1, counter1, 0);
int time2 = 200;
size_t counter2 = 2000;
tracer->SampleAllocation(time2, counter2, 0);
size_t throughput =
tracer->NewSpaceAllocationThroughputInBytesPerMillisecond();
CHECK_EQ((counter2 - counter1) / (time2 - time1), throughput);
int time3 = 1000;
size_t counter3 = 30000;
tracer->SampleAllocation(time3, counter3, 0);
throughput = tracer->NewSpaceAllocationThroughputInBytesPerMillisecond();
CHECK_EQ((counter3 - counter1) / (time3 - time1), throughput);
}
TEST(NewSpaceAllocationThroughput2) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
GCTracer* tracer = heap->tracer();
int time1 = 100;
size_t counter1 = 1000;
tracer->SampleAllocation(time1, counter1, 0);
int time2 = 200;
size_t counter2 = 2000;
tracer->SampleAllocation(time2, counter2, 0);
size_t throughput =
tracer->NewSpaceAllocationThroughputInBytesPerMillisecond(100);
CHECK_EQ((counter2 - counter1) / (time2 - time1), throughput);
int time3 = 1000;
size_t counter3 = 30000;
tracer->SampleAllocation(time3, counter3, 0);
throughput = tracer->NewSpaceAllocationThroughputInBytesPerMillisecond(100);
CHECK_EQ((counter3 - counter1) / (time3 - time1), throughput);
}
static void CheckLeak(const v8::FunctionCallbackInfo<v8::Value>& args) {
Isolate* isolate = CcTest::i_isolate();
Object* message =
*reinterpret_cast<Object**>(isolate->pending_message_obj_address());
CHECK(message->IsTheHole());
}
TEST(MessageObjectLeak) {
CcTest::InitializeVM();
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
global->Set(v8::String::NewFromUtf8(isolate, "check"),
v8::FunctionTemplate::New(isolate, CheckLeak));
v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global);
v8::Context::Scope cscope(context);
const char* test =
"try {"
" throw 'message 1';"
"} catch (e) {"
"}"
"check();"
"L: try {"
" throw 'message 2';"
"} finally {"
" break L;"
"}"
"check();";
CompileRun(test);
const char* flag = "--turbo-filter=*";
FlagList::SetFlagsFromString(flag, StrLength(flag));
FLAG_always_opt = true;
FLAG_turbo_try_catch = true;
FLAG_turbo_try_finally = true;
CompileRun(test);
}
static void CheckEqualSharedFunctionInfos(
const v8::FunctionCallbackInfo<v8::Value>& args) {
Handle<Object> obj1 = v8::Utils::OpenHandle(*args[0]);
Handle<Object> obj2 = v8::Utils::OpenHandle(*args[1]);
Handle<JSFunction> fun1 = Handle<JSFunction>::cast(obj1);
Handle<JSFunction> fun2 = Handle<JSFunction>::cast(obj2);
CHECK(fun1->shared() == fun2->shared());
}
static void RemoveCodeAndGC(const v8::FunctionCallbackInfo<v8::Value>& args) {
Isolate* isolate = CcTest::i_isolate();
Handle<Object> obj = v8::Utils::OpenHandle(*args[0]);
Handle<JSFunction> fun = Handle<JSFunction>::cast(obj);
fun->ReplaceCode(*isolate->builtins()->CompileLazy());
fun->shared()->ReplaceCode(*isolate->builtins()->CompileLazy());
isolate->heap()->CollectAllAvailableGarbage("remove code and gc");
}
TEST(CanonicalSharedFunctionInfo) {
CcTest::InitializeVM();
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
global->Set(isolate, "check", v8::FunctionTemplate::New(
isolate, CheckEqualSharedFunctionInfos));
global->Set(isolate, "remove",
v8::FunctionTemplate::New(isolate, RemoveCodeAndGC));
v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global);
v8::Context::Scope cscope(context);
CompileRun(
"function f() { return function g() {}; }"
"var g1 = f();"
"remove(f);"
"var g2 = f();"
"check(g1, g2);");
CompileRun(
"function f() { return (function() { return function g() {}; })(); }"
"var g1 = f();"
"remove(f);"
"var g2 = f();"
"check(g1, g2);");
}
TEST(OldGenerationAllocationThroughput) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
GCTracer* tracer = heap->tracer();
int time1 = 100;
size_t counter1 = 1000;
tracer->SampleAllocation(time1, 0, counter1);
int time2 = 200;
size_t counter2 = 2000;
tracer->SampleAllocation(time2, 0, counter2);
size_t throughput =
tracer->OldGenerationAllocationThroughputInBytesPerMillisecond(100);
CHECK_EQ((counter2 - counter1) / (time2 - time1), throughput);
int time3 = 1000;
size_t counter3 = 30000;
tracer->SampleAllocation(time3, 0, counter3);
throughput =
tracer->OldGenerationAllocationThroughputInBytesPerMillisecond(100);
CHECK_EQ((counter3 - counter1) / (time3 - time1), throughput);
}
TEST(AllocationThroughput) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
GCTracer* tracer = heap->tracer();
int time1 = 100;
size_t counter1 = 1000;
tracer->SampleAllocation(time1, counter1, counter1);
int time2 = 200;
size_t counter2 = 2000;
tracer->SampleAllocation(time2, counter2, counter2);
size_t throughput = tracer->AllocationThroughputInBytesPerMillisecond(100);
CHECK_EQ(2 * (counter2 - counter1) / (time2 - time1), throughput);
int time3 = 1000;
size_t counter3 = 30000;
tracer->SampleAllocation(time3, counter3, counter3);
throughput = tracer->AllocationThroughputInBytesPerMillisecond(100);
CHECK_EQ(2 * (counter3 - counter1) / (time3 - time1), throughput);
}
TEST(SlotsBufferObjectSlotsRemoval) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
SlotsBuffer* buffer = new SlotsBuffer(NULL);
void* fake_object[1];
Handle<FixedArray> array = factory->NewFixedArray(2, TENURED);
CHECK(heap->old_space()->Contains(*array));
array->set(0, reinterpret_cast<Object*>(fake_object), SKIP_WRITE_BARRIER);
// Firstly, let's test the regular slots buffer entry.
buffer->Add(HeapObject::RawField(*array, FixedArray::kHeaderSize));
CHECK(reinterpret_cast<void*>(buffer->Get(0)) ==
HeapObject::RawField(*array, FixedArray::kHeaderSize));
SlotsBuffer::RemoveObjectSlots(CcTest::i_isolate()->heap(), buffer,
array->address(),
array->address() + array->Size());
CHECK(reinterpret_cast<void*>(buffer->Get(0)) ==
HeapObject::RawField(heap->empty_fixed_array(),
FixedArrayBase::kLengthOffset));
// Secondly, let's test the typed slots buffer entry.
SlotsBuffer::AddTo(NULL, &buffer, SlotsBuffer::EMBEDDED_OBJECT_SLOT,
array->address() + FixedArray::kHeaderSize,
SlotsBuffer::FAIL_ON_OVERFLOW);
CHECK(reinterpret_cast<void*>(buffer->Get(1)) ==
reinterpret_cast<Object**>(SlotsBuffer::EMBEDDED_OBJECT_SLOT));
CHECK(reinterpret_cast<void*>(buffer->Get(2)) ==
HeapObject::RawField(*array, FixedArray::kHeaderSize));
SlotsBuffer::RemoveObjectSlots(CcTest::i_isolate()->heap(), buffer,
array->address(),
array->address() + array->Size());
CHECK(reinterpret_cast<void*>(buffer->Get(1)) ==
HeapObject::RawField(heap->empty_fixed_array(),
FixedArrayBase::kLengthOffset));
CHECK(reinterpret_cast<void*>(buffer->Get(2)) ==
HeapObject::RawField(heap->empty_fixed_array(),
FixedArrayBase::kLengthOffset));
delete buffer;
}
TEST(ContextMeasure) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Isolate* isolate = CcTest::i_isolate();
LocalContext context;
int size_upper_limit = 0;
int count_upper_limit = 0;
HeapIterator it(CcTest::heap());
for (HeapObject* obj = it.next(); obj != NULL; obj = it.next()) {
size_upper_limit += obj->Size();
count_upper_limit++;
}
ContextMeasure measure(*isolate->native_context());
PrintF("Context size : %d bytes\n", measure.Size());
PrintF("Context object count: %d\n", measure.Count());
CHECK_LE(1000, measure.Count());
CHECK_LE(50000, measure.Size());
CHECK_LE(measure.Count(), count_upper_limit);
CHECK_LE(measure.Size(), size_upper_limit);
}
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