v8/test/cctest/test-heap.cc
antonm@chromium.org 29af9c54a4 Merge ObjectIterator::has_next and ObjectIterator::next methods.
This reduces chances of improper usage, see http://code.google.com/p/v8/issues/detail?id=586
for more details.

BUG=586

Review URL: http://codereview.chromium.org/555072

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3696 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2010-01-25 22:53:18 +00:00

794 lines
24 KiB
C++

// Copyright 2006-2008 the V8 project authors. All rights reserved.
#include <stdlib.h>
#include "v8.h"
#include "execution.h"
#include "factory.h"
#include "macro-assembler.h"
#include "global-handles.h"
#include "cctest.h"
using namespace v8::internal;
static v8::Persistent<v8::Context> env;
static void InitializeVM() {
if (env.IsEmpty()) env = v8::Context::New();
v8::HandleScope scope;
env->Enter();
}
static void CheckMap(Map* map, int type, int instance_size) {
CHECK(map->IsHeapObject());
#ifdef DEBUG
CHECK(Heap::Contains(map));
#endif
CHECK_EQ(Heap::meta_map(), map->map());
CHECK_EQ(type, map->instance_type());
CHECK_EQ(instance_size, map->instance_size());
}
TEST(HeapMaps) {
InitializeVM();
CheckMap(Heap::meta_map(), MAP_TYPE, Map::kSize);
CheckMap(Heap::heap_number_map(), HEAP_NUMBER_TYPE, HeapNumber::kSize);
CheckMap(Heap::fixed_array_map(), FIXED_ARRAY_TYPE, FixedArray::kHeaderSize);
CheckMap(Heap::string_map(), STRING_TYPE, SeqTwoByteString::kAlignedSize);
}
static void CheckOddball(Object* obj, const char* string) {
CHECK(obj->IsOddball());
bool exc;
Object* print_string = *Execution::ToString(Handle<Object>(obj), &exc);
CHECK(String::cast(print_string)->IsEqualTo(CStrVector(string)));
}
static void CheckSmi(int value, const char* string) {
bool exc;
Object* print_string =
*Execution::ToString(Handle<Object>(Smi::FromInt(value)), &exc);
CHECK(String::cast(print_string)->IsEqualTo(CStrVector(string)));
}
static void CheckNumber(double value, const char* string) {
Object* obj = Heap::NumberFromDouble(value);
CHECK(obj->IsNumber());
bool exc;
Object* print_string = *Execution::ToString(Handle<Object>(obj), &exc);
CHECK(String::cast(print_string)->IsEqualTo(CStrVector(string)));
}
static void CheckFindCodeObject() {
// Test FindCodeObject
#define __ assm.
Assembler assm(NULL, 0);
__ nop(); // supported on all architectures
CodeDesc desc;
assm.GetCode(&desc);
Object* code = Heap::CreateCode(desc,
NULL,
Code::ComputeFlags(Code::STUB),
Handle<Object>(Heap::undefined_value()));
CHECK(code->IsCode());
HeapObject* obj = HeapObject::cast(code);
Address obj_addr = obj->address();
for (int i = 0; i < obj->Size(); i += kPointerSize) {
Object* found = Heap::FindCodeObject(obj_addr + i);
CHECK_EQ(code, found);
}
Object* copy = Heap::CreateCode(desc,
NULL,
Code::ComputeFlags(Code::STUB),
Handle<Object>(Heap::undefined_value()));
CHECK(copy->IsCode());
HeapObject* obj_copy = HeapObject::cast(copy);
Object* not_right = Heap::FindCodeObject(obj_copy->address() +
obj_copy->Size() / 2);
CHECK(not_right != code);
}
TEST(HeapObjects) {
InitializeVM();
v8::HandleScope sc;
Object* value = Heap::NumberFromDouble(1.000123);
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(1.000123, value->Number());
value = Heap::NumberFromDouble(1.0);
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(1.0, value->Number());
value = Heap::NumberFromInt32(1024);
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(1024.0, value->Number());
value = Heap::NumberFromInt32(Smi::kMinValue);
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(Smi::kMinValue, Smi::cast(value)->value());
value = Heap::NumberFromInt32(Smi::kMaxValue);
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(Smi::kMaxValue, Smi::cast(value)->value());
#ifndef V8_TARGET_ARCH_X64
// TODO(lrn): We need a NumberFromIntptr function in order to test this.
value = Heap::NumberFromInt32(Smi::kMinValue - 1);
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(static_cast<double>(Smi::kMinValue - 1), value->Number());
#endif
value = Heap::NumberFromUint32(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());
// nan oddball checks
CHECK(Heap::nan_value()->IsNumber());
CHECK(isnan(Heap::nan_value()->Number()));
Object* str = Heap::AllocateStringFromAscii(CStrVector("fisk hest "));
if (!str->IsFailure()) {
String* s = String::cast(str);
CHECK(s->IsString());
CHECK_EQ(10, s->length());
} else {
CHECK(false);
}
String* object_symbol = String::cast(Heap::Object_symbol());
CHECK(Top::context()->global()->HasLocalProperty(object_symbol));
// Check ToString for oddballs
CheckOddball(Heap::true_value(), "true");
CheckOddball(Heap::false_value(), "false");
CheckOddball(Heap::null_value(), "null");
CheckOddball(Heap::undefined_value(), "undefined");
// Check ToString for Smis
CheckSmi(0, "0");
CheckSmi(42, "42");
CheckSmi(-42, "-42");
// Check ToString for Numbers
CheckNumber(1.1, "1.1");
CheckFindCodeObject();
}
TEST(Tagging) {
InitializeVM();
int request = 24;
CHECK_EQ(request, static_cast<int>(OBJECT_SIZE_ALIGN(request)));
CHECK(Smi::FromInt(42)->IsSmi());
CHECK(Failure::RetryAfterGC(request, NEW_SPACE)->IsFailure());
CHECK_EQ(request, Failure::RetryAfterGC(request, NEW_SPACE)->requested());
CHECK_EQ(NEW_SPACE,
Failure::RetryAfterGC(request, NEW_SPACE)->allocation_space());
CHECK_EQ(OLD_POINTER_SPACE,
Failure::RetryAfterGC(request,
OLD_POINTER_SPACE)->allocation_space());
CHECK(Failure::Exception()->IsFailure());
CHECK(Smi::FromInt(Smi::kMinValue)->IsSmi());
CHECK(Smi::FromInt(Smi::kMaxValue)->IsSmi());
}
TEST(GarbageCollection) {
InitializeVM();
v8::HandleScope sc;
// check GC when heap is empty
int free_bytes = Heap::MaxObjectSizeInPagedSpace();
CHECK(Heap::CollectGarbage(free_bytes, NEW_SPACE));
// allocate a function and keep it in global object's property
String* func_name = String::cast(Heap::LookupAsciiSymbol("theFunction"));
SharedFunctionInfo* function_share =
SharedFunctionInfo::cast(Heap::AllocateSharedFunctionInfo(func_name));
JSFunction* function =
JSFunction::cast(Heap::AllocateFunction(*Top::function_map(),
function_share,
Heap::undefined_value()));
Map* initial_map =
Map::cast(Heap::AllocateMap(JS_OBJECT_TYPE, JSObject::kHeaderSize));
function->set_initial_map(initial_map);
Top::context()->global()->SetProperty(func_name, function, NONE);
// allocate an object, but it is unrooted
String* prop_name = String::cast(Heap::LookupAsciiSymbol("theSlot"));
String* prop_namex = String::cast(Heap::LookupAsciiSymbol("theSlotx"));
JSObject* obj = JSObject::cast(Heap::AllocateJSObject(function));
obj->SetProperty(prop_name, Smi::FromInt(23), NONE);
obj->SetProperty(prop_namex, Smi::FromInt(24), NONE);
CHECK_EQ(Smi::FromInt(23), obj->GetProperty(prop_name));
CHECK_EQ(Smi::FromInt(24), obj->GetProperty(prop_namex));
CHECK(Heap::CollectGarbage(free_bytes, NEW_SPACE));
// function should be alive, func_name might be invalid after GC
func_name = String::cast(Heap::LookupAsciiSymbol("theFunction"));
CHECK(Top::context()->global()->HasLocalProperty(func_name));
// check function is retained
Object* func_value = Top::context()->global()->GetProperty(func_name);
CHECK(func_value->IsJSFunction());
// old function pointer may not be valid
function = JSFunction::cast(func_value);
// allocate another object, make it reachable from global
obj = JSObject::cast(Heap::AllocateJSObject(function));
String* obj_name = String::cast(Heap::LookupAsciiSymbol("theObject"));
Top::context()->global()->SetProperty(obj_name, obj, NONE);
// set property
prop_name = String::cast(Heap::LookupAsciiSymbol("theSlot"));
obj->SetProperty(prop_name, Smi::FromInt(23), NONE);
// after gc, it should survive
CHECK(Heap::CollectGarbage(free_bytes, NEW_SPACE));
obj_name = String::cast(Heap::LookupAsciiSymbol("theObject"));
CHECK(Top::context()->global()->HasLocalProperty(obj_name));
CHECK(Top::context()->global()->GetProperty(obj_name)->IsJSObject());
obj = JSObject::cast(Top::context()->global()->GetProperty(obj_name));
prop_name = String::cast(Heap::LookupAsciiSymbol("theSlot"));
CHECK_EQ(Smi::FromInt(23), obj->GetProperty(prop_name));
}
static void VerifyStringAllocation(const char* string) {
String* s = String::cast(Heap::AllocateStringFromUtf8(CStrVector(string)));
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) {
InitializeVM();
VerifyStringAllocation("a");
VerifyStringAllocation("ab");
VerifyStringAllocation("abc");
VerifyStringAllocation("abcd");
VerifyStringAllocation("fiskerdrengen er paa havet");
}
TEST(LocalHandles) {
InitializeVM();
v8::HandleScope scope;
const char* name = "Kasper the spunky";
Handle<String> string = Factory::NewStringFromAscii(CStrVector(name));
CHECK_EQ(StrLength(name), string->length());
}
TEST(GlobalHandles) {
InitializeVM();
Object* i = Heap::AllocateStringFromAscii(CStrVector("fisk"));
Object* u = Heap::AllocateHeapNumber(1.12344);
Handle<Object> h1 = GlobalHandles::Create(i);
Handle<Object> h2 = GlobalHandles::Create(u);
Handle<Object> h3 = GlobalHandles::Create(i);
Handle<Object> h4 = GlobalHandles::Create(u);
// after gc, it should survive
CHECK(Heap::CollectGarbage(0, 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(v8::Persistent<v8::Value> handle,
void* id) {
USE(handle);
if (1234 == reinterpret_cast<intptr_t>(id)) WeakPointerCleared = true;
}
TEST(WeakGlobalHandlesScavenge) {
InitializeVM();
WeakPointerCleared = false;
Object* i = Heap::AllocateStringFromAscii(CStrVector("fisk"));
Object* u = Heap::AllocateHeapNumber(1.12344);
Handle<Object> h1 = GlobalHandles::Create(i);
Handle<Object> h2 = GlobalHandles::Create(u);
GlobalHandles::MakeWeak(h2.location(),
reinterpret_cast<void*>(1234),
&TestWeakGlobalHandleCallback);
// Scavenge treats weak pointers as normal roots.
Heap::PerformScavenge();
CHECK((*h1)->IsString());
CHECK((*h2)->IsHeapNumber());
CHECK(!WeakPointerCleared);
CHECK(!GlobalHandles::IsNearDeath(h2.location()));
CHECK(!GlobalHandles::IsNearDeath(h1.location()));
GlobalHandles::Destroy(h1.location());
GlobalHandles::Destroy(h2.location());
}
TEST(WeakGlobalHandlesMark) {
InitializeVM();
WeakPointerCleared = false;
Object* i = Heap::AllocateStringFromAscii(CStrVector("fisk"));
Object* u = Heap::AllocateHeapNumber(1.12344);
Handle<Object> h1 = GlobalHandles::Create(i);
Handle<Object> h2 = GlobalHandles::Create(u);
CHECK(Heap::CollectGarbage(0, OLD_POINTER_SPACE));
CHECK(Heap::CollectGarbage(0, NEW_SPACE));
// Make sure the object is promoted.
GlobalHandles::MakeWeak(h2.location(),
reinterpret_cast<void*>(1234),
&TestWeakGlobalHandleCallback);
CHECK(!GlobalHandles::IsNearDeath(h1.location()));
CHECK(!GlobalHandles::IsNearDeath(h2.location()));
CHECK(Heap::CollectGarbage(0, OLD_POINTER_SPACE));
CHECK((*h1)->IsString());
CHECK(WeakPointerCleared);
CHECK(!GlobalHandles::IsNearDeath(h1.location()));
CHECK(GlobalHandles::IsNearDeath(h2.location()));
GlobalHandles::Destroy(h1.location());
GlobalHandles::Destroy(h2.location());
}
static void TestDeleteWeakGlobalHandleCallback(
v8::Persistent<v8::Value> handle,
void* id) {
if (1234 == reinterpret_cast<intptr_t>(id)) WeakPointerCleared = true;
handle.Dispose();
}
TEST(DeleteWeakGlobalHandle) {
InitializeVM();
WeakPointerCleared = false;
Object* i = Heap::AllocateStringFromAscii(CStrVector("fisk"));
Handle<Object> h = GlobalHandles::Create(i);
GlobalHandles::MakeWeak(h.location(),
reinterpret_cast<void*>(1234),
&TestDeleteWeakGlobalHandleCallback);
// Scanvenge does not recognize weak reference.
Heap::PerformScavenge();
CHECK(!WeakPointerCleared);
// Mark-compact treats weak reference properly.
CHECK(Heap::CollectGarbage(0, OLD_POINTER_SPACE));
CHECK(WeakPointerCleared);
}
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 CheckSymbols(const char** strings) {
for (const char* string = *strings; *strings != 0; string = *strings++) {
Object* a = Heap::LookupAsciiSymbol(string);
// LookupAsciiSymbol may return a failure if a GC is needed.
if (a->IsFailure()) continue;
CHECK(a->IsSymbol());
Object* b = Heap::LookupAsciiSymbol(string);
if (b->IsFailure()) continue;
CHECK_EQ(b, a);
CHECK(String::cast(b)->IsEqualTo(CStrVector(string)));
}
}
TEST(SymbolTable) {
InitializeVM();
CheckSymbols(not_so_random_string_table);
CheckSymbols(not_so_random_string_table);
}
TEST(FunctionAllocation) {
InitializeVM();
v8::HandleScope sc;
String* name = String::cast(Heap::LookupAsciiSymbol("theFunction"));
SharedFunctionInfo* function_share =
SharedFunctionInfo::cast(Heap::AllocateSharedFunctionInfo(name));
JSFunction* function =
JSFunction::cast(Heap::AllocateFunction(*Top::function_map(),
function_share,
Heap::undefined_value()));
Map* initial_map =
Map::cast(Heap::AllocateMap(JS_OBJECT_TYPE, JSObject::kHeaderSize));
function->set_initial_map(initial_map);
String* prop_name = String::cast(Heap::LookupAsciiSymbol("theSlot"));
JSObject* obj = JSObject::cast(Heap::AllocateJSObject(function));
obj->SetProperty(prop_name, Smi::FromInt(23), NONE);
CHECK_EQ(Smi::FromInt(23), obj->GetProperty(prop_name));
// Check that we can add properties to function objects.
function->SetProperty(prop_name, Smi::FromInt(24), NONE);
CHECK_EQ(Smi::FromInt(24), function->GetProperty(prop_name));
}
TEST(ObjectProperties) {
InitializeVM();
v8::HandleScope sc;
JSFunction* constructor =
JSFunction::cast(
Top::context()->global()->GetProperty(String::cast(
Heap::Object_symbol())));
JSObject* obj = JSObject::cast(Heap::AllocateJSObject(constructor));
String* first = String::cast(Heap::LookupAsciiSymbol("first"));
String* second = String::cast(Heap::LookupAsciiSymbol("second"));
// check for empty
CHECK(!obj->HasLocalProperty(first));
// add first
obj->SetProperty(first, Smi::FromInt(1), NONE);
CHECK(obj->HasLocalProperty(first));
// delete first
CHECK(obj->DeleteProperty(first, JSObject::NORMAL_DELETION));
CHECK(!obj->HasLocalProperty(first));
// add first and then second
obj->SetProperty(first, Smi::FromInt(1), NONE);
obj->SetProperty(second, Smi::FromInt(2), NONE);
CHECK(obj->HasLocalProperty(first));
CHECK(obj->HasLocalProperty(second));
// delete first and then second
CHECK(obj->DeleteProperty(first, JSObject::NORMAL_DELETION));
CHECK(obj->HasLocalProperty(second));
CHECK(obj->DeleteProperty(second, JSObject::NORMAL_DELETION));
CHECK(!obj->HasLocalProperty(first));
CHECK(!obj->HasLocalProperty(second));
// add first and then second
obj->SetProperty(first, Smi::FromInt(1), NONE);
obj->SetProperty(second, Smi::FromInt(2), NONE);
CHECK(obj->HasLocalProperty(first));
CHECK(obj->HasLocalProperty(second));
// delete second and then first
CHECK(obj->DeleteProperty(second, JSObject::NORMAL_DELETION));
CHECK(obj->HasLocalProperty(first));
CHECK(obj->DeleteProperty(first, JSObject::NORMAL_DELETION));
CHECK(!obj->HasLocalProperty(first));
CHECK(!obj->HasLocalProperty(second));
// check string and symbol match
static const char* string1 = "fisk";
String* s1 =
String::cast(Heap::AllocateStringFromAscii(CStrVector(string1)));
obj->SetProperty(s1, Smi::FromInt(1), NONE);
CHECK(obj->HasLocalProperty(String::cast(Heap::LookupAsciiSymbol(string1))));
// check symbol and string match
static const char* string2 = "fugl";
String* s2 = String::cast(Heap::LookupAsciiSymbol(string2));
obj->SetProperty(s2, Smi::FromInt(1), NONE);
CHECK(obj->HasLocalProperty(
String::cast(Heap::AllocateStringFromAscii(CStrVector(string2)))));
}
TEST(JSObjectMaps) {
InitializeVM();
v8::HandleScope sc;
String* name = String::cast(Heap::LookupAsciiSymbol("theFunction"));
SharedFunctionInfo* function_share =
SharedFunctionInfo::cast(Heap::AllocateSharedFunctionInfo(name));
JSFunction* function =
JSFunction::cast(Heap::AllocateFunction(*Top::function_map(),
function_share,
Heap::undefined_value()));
Map* initial_map =
Map::cast(Heap::AllocateMap(JS_OBJECT_TYPE, JSObject::kHeaderSize));
function->set_initial_map(initial_map);
String* prop_name = String::cast(Heap::LookupAsciiSymbol("theSlot"));
JSObject* obj = JSObject::cast(Heap::AllocateJSObject(function));
// Set a propery
obj->SetProperty(prop_name, Smi::FromInt(23), NONE);
CHECK_EQ(Smi::FromInt(23), obj->GetProperty(prop_name));
// Check the map has changed
CHECK(initial_map != obj->map());
}
TEST(JSArray) {
InitializeVM();
v8::HandleScope sc;
String* name = String::cast(Heap::LookupAsciiSymbol("Array"));
JSFunction* function =
JSFunction::cast(Top::context()->global()->GetProperty(name));
// Allocate the object.
JSArray* array = JSArray::cast(Heap::AllocateJSObject(function));
array->Initialize(0);
// Set array length to 0.
array->SetElementsLength(Smi::FromInt(0));
CHECK_EQ(Smi::FromInt(0), array->length());
CHECK(array->HasFastElements()); // Must be in fast mode.
// array[length] = name.
array->SetElement(0, name);
CHECK_EQ(Smi::FromInt(1), array->length());
CHECK_EQ(array->GetElement(0), name);
// Set array length with larger than smi value.
Object* length =
Heap::NumberFromUint32(static_cast<uint32_t>(Smi::kMaxValue) + 1);
array->SetElementsLength(length);
uint32_t int_length = 0;
CHECK(Array::IndexFromObject(length, &int_length));
CHECK_EQ(length, array->length());
CHECK(array->HasDictionaryElements()); // Must be in slow mode.
// array[length] = name.
array->SetElement(int_length, name);
uint32_t new_int_length = 0;
CHECK(Array::IndexFromObject(array->length(), &new_int_length));
CHECK_EQ(static_cast<double>(int_length), new_int_length - 1);
CHECK_EQ(array->GetElement(int_length), name);
CHECK_EQ(array->GetElement(0), name);
}
TEST(JSObjectCopy) {
InitializeVM();
v8::HandleScope sc;
String* name = String::cast(Heap::Object_symbol());
JSFunction* constructor =
JSFunction::cast(Top::context()->global()->GetProperty(name));
JSObject* obj = JSObject::cast(Heap::AllocateJSObject(constructor));
String* first = String::cast(Heap::LookupAsciiSymbol("first"));
String* second = String::cast(Heap::LookupAsciiSymbol("second"));
obj->SetProperty(first, Smi::FromInt(1), NONE);
obj->SetProperty(second, Smi::FromInt(2), NONE);
obj->SetElement(0, first);
obj->SetElement(1, second);
// Make the clone.
JSObject* clone = JSObject::cast(Heap::CopyJSObject(obj));
CHECK(clone != obj);
CHECK_EQ(obj->GetElement(0), clone->GetElement(0));
CHECK_EQ(obj->GetElement(1), clone->GetElement(1));
CHECK_EQ(obj->GetProperty(first), clone->GetProperty(first));
CHECK_EQ(obj->GetProperty(second), clone->GetProperty(second));
// Flip the values.
clone->SetProperty(first, Smi::FromInt(2), NONE);
clone->SetProperty(second, Smi::FromInt(1), NONE);
clone->SetElement(0, second);
clone->SetElement(1, first);
CHECK_EQ(obj->GetElement(1), clone->GetElement(0));
CHECK_EQ(obj->GetElement(0), clone->GetElement(1));
CHECK_EQ(obj->GetProperty(second), clone->GetProperty(first));
CHECK_EQ(obj->GetProperty(first), clone->GetProperty(second));
}
TEST(StringAllocation) {
InitializeVM();
const unsigned char chars[] = { 0xe5, 0xa4, 0xa7 };
for (int length = 0; length < 100; length++) {
v8::HandleScope scope;
char* non_ascii = NewArray<char>(3 * length + 1);
char* ascii = NewArray<char>(length + 1);
non_ascii[3 * length] = 0;
ascii[length] = 0;
for (int i = 0; i < length; i++) {
ascii[i] = 'a';
non_ascii[3 * i] = chars[0];
non_ascii[3 * i + 1] = chars[1];
non_ascii[3 * i + 2] = chars[2];
}
Handle<String> non_ascii_sym =
Factory::LookupSymbol(Vector<const char>(non_ascii, 3 * length));
CHECK_EQ(length, non_ascii_sym->length());
Handle<String> ascii_sym =
Factory::LookupSymbol(Vector<const char>(ascii, length));
CHECK_EQ(length, ascii_sym->length());
Handle<String> non_ascii_str =
Factory::NewStringFromUtf8(Vector<const char>(non_ascii, 3 * length));
non_ascii_str->Hash();
CHECK_EQ(length, non_ascii_str->length());
Handle<String> ascii_str =
Factory::NewStringFromUtf8(Vector<const char>(ascii, length));
ascii_str->Hash();
CHECK_EQ(length, ascii_str->length());
DeleteArray(non_ascii);
DeleteArray(ascii);
}
}
static int ObjectsFoundInHeap(Handle<Object> objs[], int size) {
// Count the number of objects found in the heap.
int found_count = 0;
HeapIterator iterator;
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) {
InitializeVM();
v8::HandleScope scope;
// 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_POINTER_SPACE and NEW_SPACE
objs[next_objs_index++] = Factory::NewJSArray(10);
objs[next_objs_index++] = Factory::NewJSArray(10, TENURED);
// Allocate a small string to OLD_DATA_SPACE and NEW_SPACE
objs[next_objs_index++] =
Factory::NewStringFromAscii(CStrVector("abcdefghij"));
objs[next_objs_index++] =
Factory::NewStringFromAscii(CStrVector("abcdefghij"), TENURED);
// Allocate a large string (for large object space).
int large_size = Heap::MaxObjectSizeInPagedSpace() + 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::NewStringFromAscii(CStrVector(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(objs, objs_count));
}