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v8/test/cctest/test-serialize.cc
Leszek Swirski df2b169b3f [compiler] Off-thread deserialization ♥️ Isolate cache 
Make off-thread deserialization play well with the Isolate compilation
cache, by moving the Finish call into GetSharedFunctionInfoForScript.

This means that

  a) The isolate cache is checked before the Finish, allowing it to be
     hit, and
  b) Results of off-thread deserializations are written into the Isolate
     cache.

Bug: chromium:1075999
Change-Id: I535935180bbe77f3e718253830e649bd62857634
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3094006
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76341}
2021-08-17 09:39:15 +00:00

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// Copyright 2007-2010 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 <signal.h>
#include <sys/stat.h>
#include "src/api/api-inl.h"
#include "src/codegen/assembler-inl.h"
#include "src/codegen/compilation-cache.h"
#include "src/codegen/compiler.h"
#include "src/codegen/macro-assembler-inl.h"
#include "src/codegen/script-details.h"
#include "src/common/assert-scope.h"
#include "src/debug/debug.h"
#include "src/heap/heap-inl.h"
#include "src/heap/read-only-heap.h"
#include "src/heap/safepoint.h"
#include "src/heap/spaces.h"
#include "src/init/bootstrapper.h"
#include "src/init/v8.h"
#include "src/interpreter/interpreter.h"
#include "src/numbers/hash-seed-inl.h"
#include "src/objects/js-array-buffer-inl.h"
#include "src/objects/js-array-inl.h"
#include "src/objects/js-regexp-inl.h"
#include "src/objects/objects-inl.h"
#include "src/runtime/runtime.h"
#include "src/snapshot/code-serializer.h"
#include "src/snapshot/context-deserializer.h"
#include "src/snapshot/context-serializer.h"
#include "src/snapshot/read-only-deserializer.h"
#include "src/snapshot/read-only-serializer.h"
#include "src/snapshot/snapshot-compression.h"
#include "src/snapshot/snapshot.h"
#include "src/snapshot/startup-deserializer.h"
#include "src/snapshot/startup-serializer.h"
#include "test/cctest/cctest.h"
#include "test/cctest/heap/heap-utils.h"
#include "test/cctest/setup-isolate-for-tests.h"
namespace v8 {
namespace internal {
enum CodeCacheType { kLazy, kEager, kAfterExecute };
void DisableAlwaysOpt() {
// Isolates prepared for serialization do not optimize. The only exception is
// with the flag --always-opt.
FLAG_always_opt = false;
}
// A convenience struct to simplify management of the blobs required to
// deserialize an isolate.
struct StartupBlobs {
base::Vector<const byte> startup;
base::Vector<const byte> read_only;
void Dispose() {
startup.Dispose();
read_only.Dispose();
}
};
// TestSerializer is used for testing isolate serialization.
class TestSerializer {
public:
static v8::Isolate* NewIsolateInitialized() {
const bool kEnableSerializer = true;
const bool kGenerateHeap = true;
DisableEmbeddedBlobRefcounting();
v8::Isolate* v8_isolate = NewIsolate(kEnableSerializer, kGenerateHeap);
v8::Isolate::Scope isolate_scope(v8_isolate);
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
isolate->Init(nullptr, nullptr, false);
return v8_isolate;
}
static v8::Isolate* NewIsolateFromBlob(const StartupBlobs& blobs) {
SnapshotData startup_snapshot(blobs.startup);
SnapshotData read_only_snapshot(blobs.read_only);
const bool kEnableSerializer = false;
const bool kGenerateHeap = false;
v8::Isolate* v8_isolate = NewIsolate(kEnableSerializer, kGenerateHeap);
v8::Isolate::Scope isolate_scope(v8_isolate);
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
isolate->Init(&startup_snapshot, &read_only_snapshot, false);
return v8_isolate;
}
// Wraps v8::Isolate::New, but with a test isolate under the hood.
// Allows flexibility to bootstrap with or without snapshot even when
// the production Isolate class has one or the other behavior baked in.
static v8::Isolate* NewIsolate(const v8::Isolate::CreateParams& params) {
const bool kEnableSerializer = false;
const bool kGenerateHeap = params.snapshot_blob == nullptr;
v8::Isolate* v8_isolate = NewIsolate(kEnableSerializer, kGenerateHeap);
v8::Isolate::Initialize(v8_isolate, params);
return v8_isolate;
}
private:
// Creates an Isolate instance configured for testing.
static v8::Isolate* NewIsolate(bool with_serializer, bool generate_heap) {
i::Isolate* isolate = i::Isolate::New();
v8::Isolate* v8_isolate = reinterpret_cast<v8::Isolate*>(isolate);
if (with_serializer) isolate->enable_serializer();
isolate->set_array_buffer_allocator(CcTest::array_buffer_allocator());
isolate->setup_delegate_ = new SetupIsolateDelegateForTests(generate_heap);
return v8_isolate;
}
};
static base::Vector<const byte> WritePayload(
const base::Vector<const byte>& payload) {
int length = payload.length();
byte* blob = NewArray<byte>(length);
memcpy(blob, payload.begin(), length);
return base::Vector<const byte>(const_cast<const byte*>(blob), length);
}
namespace {
// Convenience wrapper around the convenience wrapper.
v8::StartupData CreateSnapshotDataBlob(const char* embedded_source) {
v8::StartupData data = CreateSnapshotDataBlobInternal(
v8::SnapshotCreator::FunctionCodeHandling::kClear, embedded_source);
return data;
}
} // namespace
static StartupBlobs Serialize(v8::Isolate* isolate) {
// We have to create one context. One reason for this is so that the builtins
// can be loaded from self hosted JS builtins and their addresses can be
// processed. This will clear the pending fixups array, which would otherwise
// contain GC roots that would confuse the serialization/deserialization
// process.
v8::Isolate::Scope isolate_scope(isolate);
{
v8::HandleScope scope(isolate);
v8::Context::New(isolate);
}
Isolate* internal_isolate = reinterpret_cast<Isolate*>(isolate);
internal_isolate->heap()->CollectAllAvailableGarbage(
i::GarbageCollectionReason::kTesting);
SafepointScope safepoint(internal_isolate->heap());
HandleScope scope(internal_isolate);
DisallowGarbageCollection no_gc;
ReadOnlySerializer read_only_serializer(internal_isolate,
Snapshot::kDefaultSerializerFlags);
read_only_serializer.SerializeReadOnlyRoots();
StartupSerializer ser(internal_isolate, Snapshot::kDefaultSerializerFlags,
&read_only_serializer);
ser.SerializeStrongReferences(no_gc);
ser.SerializeWeakReferencesAndDeferred();
read_only_serializer.FinalizeSerialization();
SnapshotData startup_snapshot(&ser);
SnapshotData read_only_snapshot(&read_only_serializer);
return {WritePayload(startup_snapshot.RawData()),
WritePayload(read_only_snapshot.RawData())};
}
base::Vector<const char> ConstructSource(base::Vector<const char> head,
base::Vector<const char> body,
base::Vector<const char> tail,
int repeats) {
size_t source_length = head.size() + body.size() * repeats + tail.size();
char* source = NewArray<char>(source_length);
CopyChars(source, head.begin(), head.length());
for (int i = 0; i < repeats; i++) {
CopyChars(source + head.length() + i * body.length(), body.begin(),
body.length());
}
CopyChars(source + head.length() + repeats * body.length(), tail.begin(),
tail.length());
return base::VectorOf(source, source_length);
}
static v8::Isolate* Deserialize(const StartupBlobs& blobs) {
v8::Isolate* isolate = TestSerializer::NewIsolateFromBlob(blobs);
CHECK(isolate);
return isolate;
}
static void SanityCheck(v8::Isolate* v8_isolate) {
Isolate* isolate = reinterpret_cast<Isolate*>(v8_isolate);
v8::HandleScope scope(v8_isolate);
#ifdef VERIFY_HEAP
isolate->heap()->Verify();
#endif
CHECK(isolate->global_object()->IsJSObject());
CHECK(isolate->native_context()->IsContext());
isolate->factory()->InternalizeString(base::StaticCharVector("Empty"));
}
void TestStartupSerializerOnceImpl() {
v8::Isolate* isolate = TestSerializer::NewIsolateInitialized();
StartupBlobs blobs = Serialize(isolate);
isolate->Dispose();
isolate = Deserialize(blobs);
{
v8::HandleScope handle_scope(isolate);
v8::Isolate::Scope isolate_scope(isolate);
v8::Local<v8::Context> env = v8::Context::New(isolate);
env->Enter();
SanityCheck(isolate);
}
isolate->Dispose();
blobs.Dispose();
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(StartupSerializerOnce) {
DisableAlwaysOpt();
TestStartupSerializerOnceImpl();
}
UNINITIALIZED_TEST(StartupSerializerTwice) {
DisableAlwaysOpt();
v8::Isolate* isolate = TestSerializer::NewIsolateInitialized();
StartupBlobs blobs1 = Serialize(isolate);
StartupBlobs blobs2 = Serialize(isolate);
isolate->Dispose();
blobs1.Dispose();
isolate = Deserialize(blobs2);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> env = v8::Context::New(isolate);
env->Enter();
SanityCheck(isolate);
}
isolate->Dispose();
blobs2.Dispose();
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(StartupSerializerOnceRunScript) {
DisableAlwaysOpt();
v8::Isolate* isolate = TestSerializer::NewIsolateInitialized();
StartupBlobs blobs = Serialize(isolate);
isolate->Dispose();
isolate = Deserialize(blobs);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> env = v8::Context::New(isolate);
env->Enter();
const char* c_source = "\"1234\".length";
v8::Local<v8::Script> script = v8_compile(c_source);
v8::Maybe<int32_t> result = script->Run(isolate->GetCurrentContext())
.ToLocalChecked()
->Int32Value(isolate->GetCurrentContext());
CHECK_EQ(4, result.FromJust());
}
isolate->Dispose();
blobs.Dispose();
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(StartupSerializerTwiceRunScript) {
DisableAlwaysOpt();
v8::Isolate* isolate = TestSerializer::NewIsolateInitialized();
StartupBlobs blobs1 = Serialize(isolate);
StartupBlobs blobs2 = Serialize(isolate);
isolate->Dispose();
blobs1.Dispose();
isolate = Deserialize(blobs2);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> env = v8::Context::New(isolate);
env->Enter();
const char* c_source = "\"1234\".length";
v8::Local<v8::Script> script = v8_compile(c_source);
v8::Maybe<int32_t> result = script->Run(isolate->GetCurrentContext())
.ToLocalChecked()
->Int32Value(isolate->GetCurrentContext());
CHECK_EQ(4, result.FromJust());
}
isolate->Dispose();
blobs2.Dispose();
FreeCurrentEmbeddedBlob();
}
static void SerializeContext(base::Vector<const byte>* startup_blob_out,
base::Vector<const byte>* read_only_blob_out,
base::Vector<const byte>* context_blob_out) {
v8::Isolate* v8_isolate = TestSerializer::NewIsolateInitialized();
Isolate* isolate = reinterpret_cast<Isolate*>(v8_isolate);
Heap* heap = isolate->heap();
{
v8::Isolate::Scope isolate_scope(v8_isolate);
v8::Persistent<v8::Context> env;
{
HandleScope scope(isolate);
env.Reset(v8_isolate, v8::Context::New(v8_isolate));
}
CHECK(!env.IsEmpty());
{
v8::HandleScope handle_scope(v8_isolate);
v8::Local<v8::Context>::New(v8_isolate, env)->Enter();
}
// If we don't do this then we end up with a stray root pointing at the
// context even after we have disposed of env.
heap->CollectAllAvailableGarbage(i::GarbageCollectionReason::kTesting);
{
v8::HandleScope handle_scope(v8_isolate);
v8::Local<v8::Context>::New(v8_isolate, env)->Exit();
}
HandleScope scope(isolate);
i::Context raw_context = i::Context::cast(*v8::Utils::OpenPersistent(env));
env.Reset();
SafepointScope safepoint(heap);
DisallowGarbageCollection no_gc;
SnapshotByteSink read_only_sink;
ReadOnlySerializer read_only_serializer(isolate,
Snapshot::kDefaultSerializerFlags);
read_only_serializer.SerializeReadOnlyRoots();
SnapshotByteSink startup_sink;
StartupSerializer startup_serializer(
isolate, Snapshot::kDefaultSerializerFlags, &read_only_serializer);
startup_serializer.SerializeStrongReferences(no_gc);
SnapshotByteSink context_sink;
ContextSerializer context_serializer(
isolate, Snapshot::kDefaultSerializerFlags, &startup_serializer,
v8::SerializeInternalFieldsCallback());
context_serializer.Serialize(&raw_context, no_gc);
startup_serializer.SerializeWeakReferencesAndDeferred();
read_only_serializer.FinalizeSerialization();
SnapshotData read_only_snapshot(&read_only_serializer);
SnapshotData startup_snapshot(&startup_serializer);
SnapshotData context_snapshot(&context_serializer);
*context_blob_out = WritePayload(context_snapshot.RawData());
*startup_blob_out = WritePayload(startup_snapshot.RawData());
*read_only_blob_out = WritePayload(read_only_snapshot.RawData());
}
v8_isolate->Dispose();
}
UNINITIALIZED_TEST(SnapshotCompression) {
DisableAlwaysOpt();
base::Vector<const byte> startup_blob;
base::Vector<const byte> read_only_blob;
base::Vector<const byte> context_blob;
SerializeContext(&startup_blob, &read_only_blob, &context_blob);
SnapshotData original_snapshot_data(context_blob);
SnapshotData compressed =
i::SnapshotCompression::Compress(&original_snapshot_data);
SnapshotData decompressed =
i::SnapshotCompression::Decompress(compressed.RawData());
CHECK_EQ(context_blob, decompressed.RawData());
startup_blob.Dispose();
read_only_blob.Dispose();
context_blob.Dispose();
}
UNINITIALIZED_TEST(ContextSerializerContext) {
DisableAlwaysOpt();
base::Vector<const byte> startup_blob;
base::Vector<const byte> read_only_blob;
base::Vector<const byte> context_blob;
SerializeContext(&startup_blob, &read_only_blob, &context_blob);
StartupBlobs blobs = {startup_blob, read_only_blob};
v8::Isolate* v8_isolate = TestSerializer::NewIsolateFromBlob(blobs);
CHECK(v8_isolate);
{
v8::Isolate::Scope isolate_scope(v8_isolate);
Isolate* isolate = reinterpret_cast<Isolate*>(v8_isolate);
HandleScope handle_scope(isolate);
Handle<Object> root;
Handle<JSGlobalProxy> global_proxy =
isolate->factory()->NewUninitializedJSGlobalProxy(
JSGlobalProxy::SizeWithEmbedderFields(0));
{
SnapshotData snapshot_data(context_blob);
root = ContextDeserializer::DeserializeContext(
isolate, &snapshot_data, false, global_proxy,
v8::DeserializeInternalFieldsCallback())
.ToHandleChecked();
CHECK(root->IsContext());
CHECK(Handle<Context>::cast(root)->global_proxy() == *global_proxy);
}
Handle<Object> root2;
{
SnapshotData snapshot_data(context_blob);
root2 = ContextDeserializer::DeserializeContext(
isolate, &snapshot_data, false, global_proxy,
v8::DeserializeInternalFieldsCallback())
.ToHandleChecked();
CHECK(root2->IsContext());
CHECK(!root.is_identical_to(root2));
}
context_blob.Dispose();
}
v8_isolate->Dispose();
blobs.Dispose();
FreeCurrentEmbeddedBlob();
}
static void SerializeCustomContext(base::Vector<const byte>* startup_blob_out,
base::Vector<const byte>* read_only_blob_out,
base::Vector<const byte>* context_blob_out) {
v8::Isolate* v8_isolate = TestSerializer::NewIsolateInitialized();
Isolate* isolate = reinterpret_cast<Isolate*>(v8_isolate);
{
v8::Isolate::Scope isolate_scope(v8_isolate);
v8::Persistent<v8::Context> env;
{
HandleScope scope(isolate);
env.Reset(v8_isolate, v8::Context::New(v8_isolate));
}
CHECK(!env.IsEmpty());
{
v8::HandleScope handle_scope(v8_isolate);
v8::Local<v8::Context>::New(v8_isolate, env)->Enter();
// After execution, e's function context refers to the global object.
CompileRun(
"var e;"
"(function() {"
" e = function(s) { return eval (s); }"
"})();"
"var o = this;"
"var r = Math.random();"
"var c = Math.sin(0) + Math.cos(0);"
"var f = (function(a, b) { return a + b; }).bind(1, 2, 3);"
"var s = parseInt('12345');"
"var p = 0;"
"(async ()=>{ p = await 42; })();");
base::Vector<const char> source = ConstructSource(
base::StaticCharVector("function g() { return [,"),
base::StaticCharVector("1,"),
base::StaticCharVector("];} a = g(); b = g(); b.push(1);"), 100000);
v8::MaybeLocal<v8::String> source_str =
v8::String::NewFromUtf8(v8_isolate, source.begin(),
v8::NewStringType::kNormal, source.length());
CompileRun(source_str.ToLocalChecked());
source.Dispose();
}
// If we don't do this then we end up with a stray root pointing at the
// context even after we have disposed of env.
isolate->heap()->CollectAllAvailableGarbage(
i::GarbageCollectionReason::kTesting);
{
v8::HandleScope handle_scope(v8_isolate);
v8::Local<v8::Context>::New(v8_isolate, env)->Exit();
}
HandleScope scope(isolate);
i::Context raw_context = i::Context::cast(*v8::Utils::OpenPersistent(env));
env.Reset();
SafepointScope safepoint(isolate->heap());
DisallowGarbageCollection no_gc;
SnapshotByteSink read_only_sink;
ReadOnlySerializer read_only_serializer(isolate,
Snapshot::kDefaultSerializerFlags);
read_only_serializer.SerializeReadOnlyRoots();
SnapshotByteSink startup_sink;
StartupSerializer startup_serializer(
isolate, Snapshot::kDefaultSerializerFlags, &read_only_serializer);
startup_serializer.SerializeStrongReferences(no_gc);
SnapshotByteSink context_sink;
ContextSerializer context_serializer(
isolate, Snapshot::kDefaultSerializerFlags, &startup_serializer,
v8::SerializeInternalFieldsCallback());
context_serializer.Serialize(&raw_context, no_gc);
startup_serializer.SerializeWeakReferencesAndDeferred();
read_only_serializer.FinalizeSerialization();
SnapshotData read_only_snapshot(&read_only_serializer);
SnapshotData startup_snapshot(&startup_serializer);
SnapshotData context_snapshot(&context_serializer);
*context_blob_out = WritePayload(context_snapshot.RawData());
*startup_blob_out = WritePayload(startup_snapshot.RawData());
*read_only_blob_out = WritePayload(read_only_snapshot.RawData());
}
v8_isolate->Dispose();
}
UNINITIALIZED_TEST(ContextSerializerCustomContext) {
DisableAlwaysOpt();
base::Vector<const byte> startup_blob;
base::Vector<const byte> read_only_blob;
base::Vector<const byte> context_blob;
SerializeCustomContext(&startup_blob, &read_only_blob, &context_blob);
StartupBlobs blobs = {startup_blob, read_only_blob};
v8::Isolate* v8_isolate = TestSerializer::NewIsolateFromBlob(blobs);
CHECK(v8_isolate);
{
v8::Isolate::Scope isolate_scope(v8_isolate);
Isolate* isolate = reinterpret_cast<Isolate*>(v8_isolate);
HandleScope handle_scope(isolate);
Handle<Object> root;
Handle<JSGlobalProxy> global_proxy =
isolate->factory()->NewUninitializedJSGlobalProxy(
JSGlobalProxy::SizeWithEmbedderFields(0));
{
SnapshotData snapshot_data(context_blob);
root = ContextDeserializer::DeserializeContext(
isolate, &snapshot_data, false, global_proxy,
v8::DeserializeInternalFieldsCallback())
.ToHandleChecked();
CHECK(root->IsContext());
Handle<Context> context = Handle<Context>::cast(root);
// Add context to the weak native context list
context->set(Context::NEXT_CONTEXT_LINK,
isolate->heap()->native_contexts_list(),
UPDATE_WEAK_WRITE_BARRIER);
isolate->heap()->set_native_contexts_list(*context);
CHECK(context->global_proxy() == *global_proxy);
Handle<String> o = isolate->factory()->NewStringFromAsciiChecked("o");
Handle<JSObject> global_object(context->global_object(), isolate);
Handle<Object> property = JSReceiver::GetDataProperty(global_object, o);
CHECK(property.is_identical_to(global_proxy));
v8::Local<v8::Context> v8_context = v8::Utils::ToLocal(context);
v8::Context::Scope context_scope(v8_context);
double r = CompileRun("r")
->ToNumber(v8_isolate->GetCurrentContext())
.ToLocalChecked()
->Value();
CHECK(0.0 <= r && r < 1.0);
// Math.random still works.
double random = CompileRun("Math.random()")
->ToNumber(v8_isolate->GetCurrentContext())
.ToLocalChecked()
->Value();
CHECK(0.0 <= random && random < 1.0);
double c = CompileRun("c")
->ToNumber(v8_isolate->GetCurrentContext())
.ToLocalChecked()
->Value();
CHECK_EQ(1, c);
int f = CompileRun("f()")
->ToNumber(v8_isolate->GetCurrentContext())
.ToLocalChecked()
->Int32Value(v8_isolate->GetCurrentContext())
.FromJust();
CHECK_EQ(5, f);
f = CompileRun("e('f()')")
->ToNumber(v8_isolate->GetCurrentContext())
.ToLocalChecked()
->Int32Value(v8_isolate->GetCurrentContext())
.FromJust();
CHECK_EQ(5, f);
v8::Local<v8::String> s = CompileRun("s")
->ToString(v8_isolate->GetCurrentContext())
.ToLocalChecked();
CHECK(s->Equals(v8_isolate->GetCurrentContext(), v8_str("12345"))
.FromJust());
v8::Local<v8::String> p = CompileRun("p")
->ToString(v8_isolate->GetCurrentContext())
.ToLocalChecked();
CHECK(
p->Equals(v8_isolate->GetCurrentContext(), v8_str("42")).FromJust());
int a = CompileRun("a.length")
->ToNumber(v8_isolate->GetCurrentContext())
.ToLocalChecked()
->Int32Value(v8_isolate->GetCurrentContext())
.FromJust();
CHECK_EQ(100001, a);
int b = CompileRun("b.length")
->ToNumber(v8_isolate->GetCurrentContext())
.ToLocalChecked()
->Int32Value(v8_isolate->GetCurrentContext())
.FromJust();
CHECK_EQ(100002, b);
}
context_blob.Dispose();
}
v8_isolate->Dispose();
blobs.Dispose();
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(CustomSnapshotDataBlob1) {
DisableAlwaysOpt();
const char* source1 = "function f() { return 42; }";
DisableEmbeddedBlobRefcounting();
v8::StartupData data1 = CreateSnapshotDataBlob(source1);
v8::Isolate::CreateParams params1;
params1.snapshot_blob = &data1;
params1.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate1 = TestSerializer::NewIsolate(params1);
{
v8::Isolate::Scope i_scope(isolate1);
v8::HandleScope h_scope(isolate1);
v8::Local<v8::Context> context = v8::Context::New(isolate1);
v8::Context::Scope c_scope(context);
v8::Maybe<int32_t> result =
CompileRun("f()")->Int32Value(isolate1->GetCurrentContext());
CHECK_EQ(42, result.FromJust());
CHECK(CompileRun("this.g")->IsUndefined());
}
isolate1->Dispose();
delete[] data1.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
static void UnreachableCallback(const FunctionCallbackInfo<Value>& args) {
UNREACHABLE();
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobOverwriteGlobal) {
DisableAlwaysOpt();
const char* source1 = "function f() { return 42; }";
DisableEmbeddedBlobRefcounting();
v8::StartupData data1 = CreateSnapshotDataBlob(source1);
v8::Isolate::CreateParams params1;
params1.snapshot_blob = &data1;
params1.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test that the snapshot overwrites the object template when there are
// duplicate global properties.
v8::Isolate* isolate1 = TestSerializer::NewIsolate(params1);
{
v8::Isolate::Scope i_scope(isolate1);
v8::HandleScope h_scope(isolate1);
v8::Local<v8::ObjectTemplate> global_template =
v8::ObjectTemplate::New(isolate1);
global_template->Set(
isolate1, "f",
v8::FunctionTemplate::New(isolate1, UnreachableCallback));
v8::Local<v8::Context> context =
v8::Context::New(isolate1, nullptr, global_template);
v8::Context::Scope c_scope(context);
v8::Maybe<int32_t> result =
CompileRun("f()")->Int32Value(isolate1->GetCurrentContext());
CHECK_EQ(42, result.FromJust());
}
isolate1->Dispose();
delete[] data1.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobStringNotInternalized) {
DisableAlwaysOpt();
const char* source1 =
R"javascript(
// String would be internalized if it came from a literal so create "A"
// via a function call.
var global = String.fromCharCode(65);
function f() { return global; }
)javascript";
DisableEmbeddedBlobRefcounting();
v8::StartupData data1 = CreateSnapshotDataBlob(source1);
v8::Isolate::CreateParams params1;
params1.snapshot_blob = &data1;
params1.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate1 = TestSerializer::NewIsolate(params1);
{
v8::Isolate::Scope i_scope(isolate1);
v8::HandleScope h_scope(isolate1);
v8::Local<v8::Context> context = v8::Context::New(isolate1);
v8::Context::Scope c_scope(context);
v8::Local<v8::Value> result = CompileRun("f()").As<v8::Value>();
CHECK(result->IsString());
i::String str = *v8::Utils::OpenHandle(*result.As<v8::String>());
CHECK_EQ(std::string(str.ToCString().get()), "A");
CHECK(!str.IsInternalizedString());
CHECK(!i::ReadOnlyHeap::Contains(str));
}
isolate1->Dispose();
delete[] data1.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
namespace {
void TestCustomSnapshotDataBlobWithIrregexpCode(
v8::SnapshotCreator::FunctionCodeHandling function_code_handling) {
DisableAlwaysOpt();
const char* source =
"var re1 = /\\/\\*[^*]*\\*+([^/*][^*]*\\*+)*\\//;\n"
"function f() { return '/* a comment */'.search(re1); }\n"
"function g() { return 'not a comment'.search(re1); }\n"
"function h() { return '// this is a comment'.search(re1); }\n"
"var re2 = /a/;\n"
"function i() { return '/* a comment */'.search(re2); }\n"
"f(); f(); g(); g(); h(); h(); i(); i();\n";
DisableEmbeddedBlobRefcounting();
v8::StartupData data1 =
CreateSnapshotDataBlobInternal(function_code_handling, source);
v8::Isolate::CreateParams params1;
params1.snapshot_blob = &data1;
params1.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate1 = TestSerializer::NewIsolate(params1);
{
v8::Isolate::Scope i_scope(isolate1);
v8::HandleScope h_scope(isolate1);
v8::Local<v8::Context> context = v8::Context::New(isolate1);
v8::Context::Scope c_scope(context);
{
// Check that compiled irregexp code has not been flushed prior to
// serialization.
i::Handle<i::JSRegExp> re =
Utils::OpenHandle(*CompileRun("re1").As<v8::RegExp>());
CHECK_EQ(re->HasCompiledCode(),
function_code_handling ==
v8::SnapshotCreator::FunctionCodeHandling::kKeep);
}
{
v8::Maybe<int32_t> result =
CompileRun("f()")->Int32Value(isolate1->GetCurrentContext());
CHECK_EQ(0, result.FromJust());
}
{
v8::Maybe<int32_t> result =
CompileRun("g()")->Int32Value(isolate1->GetCurrentContext());
CHECK_EQ(-1, result.FromJust());
}
{
v8::Maybe<int32_t> result =
CompileRun("h()")->Int32Value(isolate1->GetCurrentContext());
CHECK_EQ(-1, result.FromJust());
}
{
// Check that ATOM regexp remains valid.
i::Handle<i::JSRegExp> re =
Utils::OpenHandle(*CompileRun("re2").As<v8::RegExp>());
CHECK_EQ(re->TypeTag(), JSRegExp::ATOM);
CHECK(!re->HasCompiledCode());
}
}
isolate1->Dispose();
delete[] data1.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
} // namespace
UNINITIALIZED_TEST(CustomSnapshotDataBlobWithIrregexpCodeKeepCode) {
TestCustomSnapshotDataBlobWithIrregexpCode(
v8::SnapshotCreator::FunctionCodeHandling::kKeep);
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobWithIrregexpCodeClearCode) {
TestCustomSnapshotDataBlobWithIrregexpCode(
v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
UNINITIALIZED_TEST(SnapshotChecksum) {
DisableAlwaysOpt();
const char* source1 = "function f() { return 42; }";
DisableEmbeddedBlobRefcounting();
v8::StartupData data1 = CreateSnapshotDataBlob(source1);
CHECK(i::Snapshot::VerifyChecksum(&data1));
const_cast<char*>(data1.data)[142] = data1.data[142] ^ 4; // Flip a bit.
CHECK(!i::Snapshot::VerifyChecksum(&data1));
delete[] data1.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
struct InternalFieldData {
uint32_t data;
};
v8::StartupData SerializeInternalFields(v8::Local<v8::Object> holder, int index,
void* data) {
if (data == reinterpret_cast<void*>(2000)) {
// Used for SnapshotCreatorTemplates test. We check that none of the fields
// have been cleared yet.
CHECK_NOT_NULL(holder->GetAlignedPointerFromInternalField(1));
} else {
CHECK_EQ(reinterpret_cast<void*>(2016), data);
}
if (index != 1) return {nullptr, 0};
InternalFieldData* embedder_field = static_cast<InternalFieldData*>(
holder->GetAlignedPointerFromInternalField(index));
if (embedder_field == nullptr) return {nullptr, 0};
int size = sizeof(*embedder_field);
char* payload = new char[size];
// We simply use memcpy to serialize the content.
memcpy(payload, embedder_field, size);
return {payload, size};
}
std::vector<InternalFieldData*> deserialized_data;
void DeserializeInternalFields(v8::Local<v8::Object> holder, int index,
v8::StartupData payload, void* data) {
if (payload.raw_size == 0) {
holder->SetAlignedPointerInInternalField(index, nullptr);
return;
}
CHECK_EQ(reinterpret_cast<void*>(2017), data);
InternalFieldData* embedder_field = new InternalFieldData{0};
memcpy(embedder_field, payload.data, payload.raw_size);
holder->SetAlignedPointerInInternalField(index, embedder_field);
deserialized_data.push_back(embedder_field);
}
using Int32Expectations = std::vector<std::tuple<const char*, int32_t>>;
void TestInt32Expectations(const Int32Expectations& expectations) {
for (const auto& e : expectations) {
ExpectInt32(std::get<0>(e), std::get<1>(e));
}
}
void TypedArrayTestHelper(
const char* code, const Int32Expectations& expectations,
const char* code_to_run_after_restore = nullptr,
const Int32Expectations& after_restore_expectations = Int32Expectations(),
v8::ArrayBuffer::Allocator* allocator = nullptr) {
DisableAlwaysOpt();
i::FLAG_allow_natives_syntax = true;
DisableEmbeddedBlobRefcounting();
v8::StartupData blob;
{
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CompileRun(code);
TestInt32Expectations(expectations);
creator.SetDefaultContext(
context, v8::SerializeInternalFieldsCallback(
SerializeInternalFields, reinterpret_cast<void*>(2016)));
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
v8::Isolate::CreateParams create_params;
create_params.snapshot_blob = &blob;
create_params.array_buffer_allocator =
allocator != nullptr ? allocator : CcTest::array_buffer_allocator();
v8::Isolate* isolate = TestSerializer::NewIsolate(create_params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(
isolate, nullptr, v8::MaybeLocal<v8::ObjectTemplate>(),
v8::MaybeLocal<v8::Value>(),
v8::DeserializeInternalFieldsCallback(DeserializeInternalFields,
reinterpret_cast<void*>(2017)));
CHECK(deserialized_data.empty()); // We do not expect any embedder data.
v8::Context::Scope c_scope(context);
TestInt32Expectations(expectations);
if (code_to_run_after_restore) {
CompileRun(code_to_run_after_restore);
}
TestInt32Expectations(after_restore_expectations);
}
isolate->Dispose();
delete[] blob.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobWithOffHeapTypedArray) {
const char* code =
"var x = new Uint8Array(128);"
"x[0] = 12;"
"var arr = new Array(17);"
"arr[1] = 24;"
"var y = new Uint32Array(arr);"
"var buffer = new ArrayBuffer(128);"
"var z = new Int16Array(buffer);"
"z[0] = 48;";
Int32Expectations expectations = {std::make_tuple("x[0]", 12),
std::make_tuple("y[1]", 24),
std::make_tuple("z[0]", 48)};
TypedArrayTestHelper(code, expectations);
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobSharedArrayBuffer) {
const char* code =
"var x = new Int32Array([12, 24, 48, 96]);"
"var y = new Uint8Array(x.buffer)";
Int32Expectations expectations = {
std::make_tuple("x[0]", 12),
std::make_tuple("x[1]", 24),
#if !V8_TARGET_BIG_ENDIAN
std::make_tuple("y[0]", 12),
std::make_tuple("y[1]", 0),
std::make_tuple("y[2]", 0),
std::make_tuple("y[3]", 0),
std::make_tuple("y[4]", 24)
#else
std::make_tuple("y[3]", 12),
std::make_tuple("y[2]", 0),
std::make_tuple("y[1]", 0),
std::make_tuple("y[0]", 0),
std::make_tuple("y[7]", 24)
#endif
};
TypedArrayTestHelper(code, expectations);
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobArrayBufferWithOffset) {
const char* code =
"var x = new Int32Array([12, 24, 48, 96]);"
"var y = new Int32Array(x.buffer, 4, 2)";
Int32Expectations expectations = {
std::make_tuple("x[1]", 24),
std::make_tuple("x[2]", 48),
std::make_tuple("y[0]", 24),
std::make_tuple("y[1]", 48),
};
// Verify that the typed arrays use the same buffer (not independent copies).
const char* code_to_run_after_restore = "x[2] = 57; y[0] = 42;";
Int32Expectations after_restore_expectations = {
std::make_tuple("x[1]", 42),
std::make_tuple("y[1]", 57),
};
TypedArrayTestHelper(code, expectations, code_to_run_after_restore,
after_restore_expectations);
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobDataView) {
const char* code =
"var x = new Int8Array([1, 2, 3, 4]);"
"var v = new DataView(x.buffer)";
Int32Expectations expectations = {std::make_tuple("v.getInt8(0)", 1),
std::make_tuple("v.getInt8(1)", 2),
std::make_tuple("v.getInt16(0)", 258),
std::make_tuple("v.getInt16(1)", 515)};
TypedArrayTestHelper(code, expectations);
}
namespace {
class AlternatingArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
public:
AlternatingArrayBufferAllocator()
: allocation_fails_(false),
allocator_(v8::ArrayBuffer::Allocator::NewDefaultAllocator()) {}
~AlternatingArrayBufferAllocator() { delete allocator_; }
void* Allocate(size_t length) override {
allocation_fails_ = !allocation_fails_;
if (allocation_fails_) return nullptr;
return allocator_->Allocate(length);
}
void* AllocateUninitialized(size_t length) override {
return this->Allocate(length);
}
void Free(void* data, size_t size) override { allocator_->Free(data, size); }
void* Reallocate(void* data, size_t old_length, size_t new_length) override {
return allocator_->Reallocate(data, old_length, new_length);
}
private:
bool allocation_fails_;
v8::ArrayBuffer::Allocator* allocator_;
};
} // anonymous namespace
UNINITIALIZED_TEST(CustomSnapshotManyArrayBuffers) {
const char* code =
"var buffers = [];"
"for (let i = 0; i < 70; i++) buffers.push(new Uint8Array(1000));";
Int32Expectations expectations = {std::make_tuple("buffers.length", 70)};
std::unique_ptr<v8::ArrayBuffer::Allocator> allocator(
new AlternatingArrayBufferAllocator());
TypedArrayTestHelper(code, expectations, nullptr, Int32Expectations(),
allocator.get());
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobDetachedArrayBuffer) {
const char* code =
"var x = new Int16Array([12, 24, 48]);"
"%ArrayBufferDetach(x.buffer);";
Int32Expectations expectations = {std::make_tuple("x.buffer.byteLength", 0),
std::make_tuple("x.length", 0)};
DisableAlwaysOpt();
i::FLAG_allow_natives_syntax = true;
DisableEmbeddedBlobRefcounting();
v8::StartupData blob;
{
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CompileRun(code);
TestInt32Expectations(expectations);
creator.SetDefaultContext(
context, v8::SerializeInternalFieldsCallback(
SerializeInternalFields, reinterpret_cast<void*>(2016)));
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
v8::Isolate::CreateParams create_params;
create_params.snapshot_blob = &blob;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = TestSerializer::NewIsolate(create_params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(
isolate, nullptr, v8::MaybeLocal<v8::ObjectTemplate>(),
v8::MaybeLocal<v8::Value>(),
v8::DeserializeInternalFieldsCallback(DeserializeInternalFields,
reinterpret_cast<void*>(2017)));
v8::Context::Scope c_scope(context);
TestInt32Expectations(expectations);
v8::Local<v8::Value> x = CompileRun("x");
CHECK(x->IsTypedArray());
i::Handle<i::JSTypedArray> array =
i::Handle<i::JSTypedArray>::cast(v8::Utils::OpenHandle(*x));
CHECK(array->WasDetached());
}
isolate->Dispose();
delete[] blob.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
i::Handle<i::JSArrayBuffer> GetBufferFromTypedArray(
v8::Local<v8::Value> typed_array) {
CHECK(typed_array->IsTypedArray());
i::Handle<i::JSArrayBufferView> view = i::Handle<i::JSArrayBufferView>::cast(
v8::Utils::OpenHandle(*typed_array));
return i::handle(i::JSArrayBuffer::cast(view->buffer()), view->GetIsolate());
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobOnOrOffHeapTypedArray) {
const char* code =
"var x = new Uint8Array(8);"
"x[0] = 12;"
"x[7] = 24;"
"var y = new Int16Array([12, 24, 48]);"
"var z = new Int32Array(64);"
"z[0] = 96;";
Int32Expectations expectations = {
std::make_tuple("x[0]", 12), std::make_tuple("x[7]", 24),
std::make_tuple("y[2]", 48), std::make_tuple("z[0]", 96)};
DisableAlwaysOpt();
i::FLAG_allow_natives_syntax = true;
DisableEmbeddedBlobRefcounting();
v8::StartupData blob;
{
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CompileRun(code);
TestInt32Expectations(expectations);
i::Handle<i::JSArrayBuffer> buffer =
GetBufferFromTypedArray(CompileRun("x"));
// The resulting buffer should be on-heap.
CHECK_NULL(buffer->backing_store());
creator.SetDefaultContext(
context, v8::SerializeInternalFieldsCallback(
SerializeInternalFields, reinterpret_cast<void*>(2016)));
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
v8::Isolate::CreateParams create_params;
create_params.snapshot_blob = &blob;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = TestSerializer::NewIsolate(create_params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(
isolate, nullptr, v8::MaybeLocal<v8::ObjectTemplate>(),
v8::MaybeLocal<v8::Value>(),
v8::DeserializeInternalFieldsCallback(DeserializeInternalFields,
reinterpret_cast<void*>(2017)));
v8::Context::Scope c_scope(context);
TestInt32Expectations(expectations);
i::Handle<i::JSArrayBuffer> buffer =
GetBufferFromTypedArray(CompileRun("x"));
// The resulting buffer should be on-heap.
CHECK_NULL(buffer->backing_store());
buffer = GetBufferFromTypedArray(CompileRun("y"));
CHECK_NULL(buffer->backing_store());
buffer = GetBufferFromTypedArray(CompileRun("z"));
// The resulting buffer should be off-heap.
CHECK_NOT_NULL(buffer->backing_store());
}
isolate->Dispose();
delete[] blob.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobTypedArrayNoEmbedderFieldCallback) {
const char* code = "var x = new Uint8Array(8);";
DisableAlwaysOpt();
i::FLAG_allow_natives_syntax = true;
DisableEmbeddedBlobRefcounting();
v8::StartupData blob;
{
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CompileRun(code);
creator.SetDefaultContext(context, v8::SerializeInternalFieldsCallback());
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
v8::Isolate::CreateParams create_params;
create_params.snapshot_blob = &blob;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = TestSerializer::NewIsolate(create_params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(
isolate, nullptr, v8::MaybeLocal<v8::ObjectTemplate>(),
v8::MaybeLocal<v8::Value>(), v8::DeserializeInternalFieldsCallback());
v8::Context::Scope c_scope(context);
}
isolate->Dispose();
delete[] blob.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(CustomSnapshotDataBlob2) {
DisableAlwaysOpt();
const char* source2 =
"function f() { return g() * 2; }"
"function g() { return 43; }"
"/./.test('a')";
DisableEmbeddedBlobRefcounting();
v8::StartupData data2 = CreateSnapshotDataBlob(source2);
v8::Isolate::CreateParams params2;
params2.snapshot_blob = &data2;
params2.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate2 = TestSerializer::NewIsolate(params2);
{
v8::Isolate::Scope i_scope(isolate2);
v8::HandleScope h_scope(isolate2);
v8::Local<v8::Context> context = v8::Context::New(isolate2);
v8::Context::Scope c_scope(context);
v8::Maybe<int32_t> result =
CompileRun("f()")->Int32Value(isolate2->GetCurrentContext());
CHECK_EQ(86, result.FromJust());
result = CompileRun("g()")->Int32Value(isolate2->GetCurrentContext());
CHECK_EQ(43, result.FromJust());
}
isolate2->Dispose();
delete[] data2.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
static void SerializationFunctionTemplate(
const v8::FunctionCallbackInfo<v8::Value>& args) {
args.GetReturnValue().Set(args[0]);
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobOutdatedContextWithOverflow) {
DisableAlwaysOpt();
const char* source1 =
"var o = {};"
"(function() {"
" function f1(x) { return f2(x) instanceof Array; }"
" function f2(x) { return foo.bar(x); }"
" o.a = f2.bind(null);"
" o.b = 1;"
" o.c = 2;"
" o.d = 3;"
" o.e = 4;"
"})();\n";
const char* source2 = "o.a(42)";
DisableEmbeddedBlobRefcounting();
v8::StartupData data = CreateSnapshotDataBlob(source1);
v8::Isolate::CreateParams params;
params.snapshot_blob = &data;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
v8::Local<v8::ObjectTemplate> property = v8::ObjectTemplate::New(isolate);
v8::Local<v8::FunctionTemplate> function =
v8::FunctionTemplate::New(isolate, SerializationFunctionTemplate);
property->Set(isolate, "bar", function);
global->Set(isolate, "foo", property);
v8::Local<v8::Context> context = v8::Context::New(isolate, nullptr, global);
v8::Context::Scope c_scope(context);
v8::Local<v8::Value> result = CompileRun(source2);
v8::Maybe<bool> compare =
v8_str("42")->Equals(isolate->GetCurrentContext(), result);
CHECK(compare.FromJust());
}
isolate->Dispose();
delete[] data.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobWithLocker) {
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate0 = v8::Isolate::New(create_params);
{
v8::Locker locker(isolate0);
v8::Isolate::Scope i_scope(isolate0);
v8::HandleScope h_scope(isolate0);
v8::Local<v8::Context> context = v8::Context::New(isolate0);
v8::Context::Scope c_scope(context);
v8::Maybe<int32_t> result =
CompileRun("Math.cos(0)")->Int32Value(isolate0->GetCurrentContext());
CHECK_EQ(1, result.FromJust());
}
isolate0->Dispose();
const char* source1 = "function f() { return 42; }";
DisableEmbeddedBlobRefcounting();
v8::StartupData data1 = CreateSnapshotDataBlob(source1);
v8::Isolate::CreateParams params1;
params1.snapshot_blob = &data1;
params1.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate1 = TestSerializer::NewIsolate(params1);
{
v8::Locker locker(isolate1);
v8::Isolate::Scope i_scope(isolate1);
v8::HandleScope h_scope(isolate1);
v8::Local<v8::Context> context = v8::Context::New(isolate1);
v8::Context::Scope c_scope(context);
v8::Maybe<int32_t> result = CompileRun("f()")->Int32Value(context);
CHECK_EQ(42, result.FromJust());
}
isolate1->Dispose();
delete[] data1.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobStackOverflow) {
DisableAlwaysOpt();
const char* source =
"var a = [0];"
"var b = a;"
"for (var i = 0; i < 10000; i++) {"
" var c = [i];"
" b.push(c);"
" b.push(c);"
" b = c;"
"}";
DisableEmbeddedBlobRefcounting();
v8::StartupData data = CreateSnapshotDataBlob(source);
v8::Isolate::CreateParams params;
params.snapshot_blob = &data;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope c_scope(context);
const char* test =
"var sum = 0;"
"while (a) {"
" sum += a[0];"
" a = a[1];"
"}"
"sum";
v8::Maybe<int32_t> result =
CompileRun(test)->Int32Value(isolate->GetCurrentContext());
CHECK_EQ(9999 * 5000, result.FromJust());
}
isolate->Dispose();
delete[] data.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
bool IsCompiled(const char* name) {
return i::Handle<i::JSFunction>::cast(
v8::Utils::OpenHandle(*CompileRun(name)))
->shared()
.is_compiled();
}
UNINITIALIZED_TEST(SnapshotDataBlobWithWarmup) {
DisableAlwaysOpt();
const char* warmup = "Math.abs(1); Math.random = 1;";
DisableEmbeddedBlobRefcounting();
v8::StartupData cold = CreateSnapshotDataBlob(nullptr);
v8::StartupData warm = WarmUpSnapshotDataBlobInternal(cold, warmup);
delete[] cold.data;
v8::Isolate::CreateParams params;
params.snapshot_blob = &warm;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope c_scope(context);
// Running the warmup script has effect on whether functions are
// pre-compiled, but does not pollute the context.
CHECK(IsCompiled("Math.abs"));
CHECK(IsCompiled("String.raw"));
CHECK(CompileRun("Math.random")->IsFunction());
}
isolate->Dispose();
delete[] warm.data;
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobWithWarmup) {
DisableAlwaysOpt();
const char* source =
"function f() { return Math.abs(1); }\n"
"function g() { return String.raw(1); }\n"
"Object.valueOf(1);"
"var a = 5";
const char* warmup = "a = f()";
DisableEmbeddedBlobRefcounting();
v8::StartupData cold = CreateSnapshotDataBlob(source);
v8::StartupData warm = WarmUpSnapshotDataBlobInternal(cold, warmup);
delete[] cold.data;
v8::Isolate::CreateParams params;
params.snapshot_blob = &warm;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope c_scope(context);
// Running the warmup script has effect on whether functions are
// pre-compiled, but does not pollute the context.
CHECK(IsCompiled("f"));
CHECK(IsCompiled("Math.abs"));
CHECK(!IsCompiled("g"));
CHECK(IsCompiled("String.raw"));
CHECK(IsCompiled("Array.prototype.lastIndexOf"));
CHECK_EQ(5, CompileRun("a")->Int32Value(context).FromJust());
}
isolate->Dispose();
delete[] warm.data;
FreeCurrentEmbeddedBlob();
}
namespace {
v8::StartupData CreateCustomSnapshotWithKeep() {
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
{
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
v8::Local<v8::String> source_str = v8_str(
"function f() { return Math.abs(1); }\n"
"function g() { return String.raw(1); }");
v8::ScriptOrigin origin(isolate, v8_str("test"));
v8::ScriptCompiler::Source source(source_str, origin);
CompileRun(isolate->GetCurrentContext(), &source,
v8::ScriptCompiler::kEagerCompile);
creator.SetDefaultContext(context);
}
}
return creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kKeep);
}
} // namespace
UNINITIALIZED_TEST(CustomSnapshotDataBlobWithKeep) {
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
v8::StartupData blob = CreateCustomSnapshotWithKeep();
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CHECK(IsCompiled("f"));
CHECK(IsCompiled("g"));
}
isolate->Dispose();
}
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(CustomSnapshotDataBlobImmortalImmovableRoots) {
DisableAlwaysOpt();
// Flood the startup snapshot with shared function infos. If they are
// serialized before the immortal immovable root, the root will no longer end
// up on the first page.
base::Vector<const char> source =
ConstructSource(base::StaticCharVector("var a = [];"),
base::StaticCharVector("a.push(function() {return 7});"),
base::StaticCharVector("\0"), 10000);
DisableEmbeddedBlobRefcounting();
v8::StartupData data = CreateSnapshotDataBlob(source.begin());
v8::Isolate::CreateParams params;
params.snapshot_blob = &data;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope c_scope(context);
CHECK_EQ(7, CompileRun("a[0]()")->Int32Value(context).FromJust());
}
isolate->Dispose();
source.Dispose();
delete[] data.data; // We can dispose of the snapshot blob now.
FreeCurrentEmbeddedBlob();
}
TEST(TestThatAlwaysSucceeds) {}
TEST(TestThatAlwaysFails) {
bool ArtificialFailure = false;
CHECK(ArtificialFailure);
}
int CountBuiltins() {
// Check that we have not deserialized any additional builtin.
HeapObjectIterator iterator(CcTest::heap());
DisallowGarbageCollection no_gc;
int counter = 0;
for (HeapObject obj = iterator.Next(); !obj.is_null();
obj = iterator.Next()) {
if (obj.IsCode() && Code::cast(obj).kind() == CodeKind::BUILTIN) counter++;
}
return counter;
}
static Handle<SharedFunctionInfo> CompileScript(
Isolate* isolate, Handle<String> source,
const ScriptDetails& script_details, AlignedCachedData* cached_data,
v8::ScriptCompiler::CompileOptions options) {
return Compiler::GetSharedFunctionInfoForScriptWithCachedData(
isolate, source, script_details, cached_data, options,
ScriptCompiler::kNoCacheNoReason, NOT_NATIVES_CODE)
.ToHandleChecked();
}
static Handle<SharedFunctionInfo> CompileScriptAndProduceCache(
Isolate* isolate, Handle<String> source,
const ScriptDetails& script_details, AlignedCachedData** out_cached_data,
v8::ScriptCompiler::CompileOptions options) {
Handle<SharedFunctionInfo> sfi =
Compiler::GetSharedFunctionInfoForScript(
isolate, source, script_details, options,
ScriptCompiler::kNoCacheNoReason, NOT_NATIVES_CODE)
.ToHandleChecked();
std::unique_ptr<ScriptCompiler::CachedData> cached_data(
ScriptCompiler::CreateCodeCache(ToApiHandle<UnboundScript>(sfi)));
uint8_t* buffer = NewArray<uint8_t>(cached_data->length);
MemCopy(buffer, cached_data->data, cached_data->length);
*out_cached_data = new i::AlignedCachedData(buffer, cached_data->length);
(*out_cached_data)->AcquireDataOwnership();
return sfi;
}
TEST(CodeSerializerWithProfiler) {
FLAG_enable_lazy_source_positions = true;
FLAG_stress_lazy_source_positions = false;
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()
->DisableScriptAndEval(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
const char* source = "1 + 1";
Handle<String> orig_source = isolate->factory()
->NewStringFromUtf8(base::CStrVector(source))
.ToHandleChecked();
Handle<String> copy_source = isolate->factory()
->NewStringFromUtf8(base::CStrVector(source))
.ToHandleChecked();
CHECK(!orig_source.is_identical_to(copy_source));
CHECK(orig_source->Equals(*copy_source));
AlignedCachedData* cache = nullptr;
ScriptDetails default_script_details;
Handle<SharedFunctionInfo> orig = CompileScriptAndProduceCache(
isolate, orig_source, default_script_details, &cache,
v8::ScriptCompiler::kNoCompileOptions);
CHECK(!orig->GetBytecodeArray(isolate).HasSourcePositionTable());
isolate->SetIsProfiling(true);
// This does not assert that no compilation can happen as source position
// collection could trigger it.
Handle<SharedFunctionInfo> copy =
CompileScript(isolate, copy_source, default_script_details, cache,
v8::ScriptCompiler::kConsumeCodeCache);
// Since the profiler is now enabled, source positions should be collected
// after deserialization.
CHECK(copy->GetBytecodeArray(isolate).HasSourcePositionTable());
delete cache;
}
void TestCodeSerializerOnePlusOneImpl(bool verify_builtins_count = true) {
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()
->DisableScriptAndEval(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
const char* source = "1 + 1";
Handle<String> orig_source = isolate->factory()
->NewStringFromUtf8(base::CStrVector(source))
.ToHandleChecked();
Handle<String> copy_source = isolate->factory()
->NewStringFromUtf8(base::CStrVector(source))
.ToHandleChecked();
CHECK(!orig_source.is_identical_to(copy_source));
CHECK(orig_source->Equals(*copy_source));
AlignedCachedData* cache = nullptr;
ScriptDetails default_script_details;
Handle<SharedFunctionInfo> orig = CompileScriptAndProduceCache(
isolate, orig_source, default_script_details, &cache,
v8::ScriptCompiler::kNoCompileOptions);
int builtins_count = CountBuiltins();
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, copy_source, default_script_details, cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
CHECK(Script::cast(copy->script()).source() == *copy_source);
Handle<JSFunction> copy_fun =
Factory::JSFunctionBuilder{isolate, copy, isolate->native_context()}
.Build();
Handle<JSObject> global(isolate->context().global_object(), isolate);
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, nullptr).ToHandleChecked();
CHECK_EQ(2, Handle<Smi>::cast(copy_result)->value());
if (verify_builtins_count) CHECK_EQ(builtins_count, CountBuiltins());
delete cache;
}
TEST(CodeSerializerOnePlusOne) { TestCodeSerializerOnePlusOneImpl(); }
// See bug v8:9122
#ifndef V8_TARGET_ARCH_ARM
TEST(CodeSerializerOnePlusOneWithInterpretedFramesNativeStack) {
FLAG_interpreted_frames_native_stack = true;
// We pass false because this test will create IET copies (which are
// builtins).
TestCodeSerializerOnePlusOneImpl(false);
}
#endif
TEST(CodeSerializerOnePlusOneWithDebugger) {
v8::HandleScope scope(CcTest::isolate());
static v8::debug::DebugDelegate dummy_delegate;
v8::debug::SetDebugDelegate(CcTest::isolate(), &dummy_delegate);
TestCodeSerializerOnePlusOneImpl();
}
TEST(CodeSerializerPromotedToCompilationCache) {
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
v8::HandleScope scope(CcTest::isolate());
const char* source = "1 + 1";
Handle<String> src = isolate->factory()->NewStringFromAsciiChecked(source);
AlignedCachedData* cache = nullptr;
Handle<FixedArray> default_host_defined_options =
isolate->factory()->NewFixedArray(2);
default_host_defined_options->set(0, Smi::FromInt(0));
const char* default_host_defined_option_1_string = "custom string";
Handle<String> default_host_defined_option_1 =
isolate->factory()->NewStringFromAsciiChecked(
default_host_defined_option_1_string);
default_host_defined_options->set(1, *default_host_defined_option_1);
ScriptDetails default_script_details(src);
default_script_details.host_defined_options = default_host_defined_options;
CompileScriptAndProduceCache(isolate, src, default_script_details, &cache,
v8::ScriptCompiler::kNoCompileOptions);
DisallowCompilation no_compile_expected(isolate);
Handle<SharedFunctionInfo> copy =
CompileScript(isolate, src, default_script_details, cache,
v8::ScriptCompiler::kConsumeCodeCache);
{
ScriptDetails script_details(src);
script_details.host_defined_options =
default_script_details.host_defined_options;
MaybeHandle<SharedFunctionInfo> shared =
isolate->compilation_cache()->LookupScript(src, script_details,
LanguageMode::kSloppy);
CHECK_EQ(*shared.ToHandleChecked(), *copy);
}
{
// Lookup with strictly equal host_defined_options should succeed:
ScriptDetails script_details(src);
Handle<FixedArray> host_defined_options =
isolate->factory()->NewFixedArray(2);
host_defined_options->set(0, default_host_defined_options->get(0));
Handle<String> host_defined_option_1 =
isolate->factory()->NewStringFromAsciiChecked(
default_host_defined_option_1_string);
host_defined_options->set(1, *host_defined_option_1);
script_details.host_defined_options = host_defined_options;
MaybeHandle<SharedFunctionInfo> shared =
isolate->compilation_cache()->LookupScript(src, script_details,
LanguageMode::kSloppy);
CHECK_EQ(*shared.ToHandleChecked(), *copy);
}
{
// Lookup with different string with same contents should succeed:
ScriptDetails script_details(
isolate->factory()->NewStringFromAsciiChecked(source));
script_details.host_defined_options =
default_script_details.host_defined_options;
MaybeHandle<SharedFunctionInfo> shared =
isolate->compilation_cache()->LookupScript(src, script_details,
LanguageMode::kSloppy);
CHECK_EQ(*shared.ToHandleChecked(), *copy);
}
{
// Lookup with different string should fail:
ScriptDetails script_details(
isolate->factory()->NewStringFromAsciiChecked("other"));
MaybeHandle<SharedFunctionInfo> shared =
isolate->compilation_cache()->LookupScript(src, script_details,
LanguageMode::kSloppy);
CHECK(shared.is_null());
}
{
// Lookup with different position should fail:
ScriptDetails script_details(src);
script_details.line_offset = 0xFF;
MaybeHandle<SharedFunctionInfo> shared =
isolate->compilation_cache()->LookupScript(src, script_details,
LanguageMode::kSloppy);
CHECK(shared.is_null());
}
{
// Lookup with different position should fail:
ScriptDetails script_details(src);
script_details.column_offset = 0xFF;
MaybeHandle<SharedFunctionInfo> shared =
isolate->compilation_cache()->LookupScript(src, script_details,
LanguageMode::kSloppy);
CHECK(shared.is_null());
}
{
// Lookup with different language mode should fail:
ScriptDetails script_details(src);
MaybeHandle<SharedFunctionInfo> shared =
isolate->compilation_cache()->LookupScript(src, script_details,
LanguageMode::kStrict);
CHECK(shared.is_null());
}
{
// Lookup with different script_options should fail
ScriptOriginOptions origin_options(false, true);
CHECK_NE(ScriptOriginOptions().Flags(), origin_options.Flags());
ScriptDetails script_details(src, origin_options);
MaybeHandle<SharedFunctionInfo> shared =
isolate->compilation_cache()->LookupScript(src, script_details,
LanguageMode::kSloppy);
CHECK(shared.is_null());
}
{
// Lookup with different host_defined_options should fail:
ScriptDetails script_details(src);
script_details.host_defined_options = isolate->factory()->NewFixedArray(5);
MaybeHandle<SharedFunctionInfo> shared =
isolate->compilation_cache()->LookupScript(src, script_details,
LanguageMode::kSloppy);
CHECK(shared.is_null());
}
delete cache;
}
TEST(CodeSerializerInternalizedString) {
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()
->DisableScriptAndEval(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
const char* source = "'string1'";
Handle<String> orig_source = isolate->factory()
->NewStringFromUtf8(base::CStrVector(source))
.ToHandleChecked();
Handle<String> copy_source = isolate->factory()
->NewStringFromUtf8(base::CStrVector(source))
.ToHandleChecked();
CHECK(!orig_source.is_identical_to(copy_source));
CHECK(orig_source->Equals(*copy_source));
Handle<JSObject> global(isolate->context().global_object(), isolate);
i::AlignedCachedData* cached_data = nullptr;
Handle<SharedFunctionInfo> orig = CompileScriptAndProduceCache(
isolate, orig_source, ScriptDetails(), &cached_data,
v8::ScriptCompiler::kNoCompileOptions);
Handle<JSFunction> orig_fun =
Factory::JSFunctionBuilder{isolate, orig, isolate->native_context()}
.Build();
Handle<Object> orig_result =
Execution::Call(isolate, orig_fun, global, 0, nullptr).ToHandleChecked();
CHECK(orig_result->IsInternalizedString());
int builtins_count = CountBuiltins();
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, copy_source, ScriptDetails(), cached_data,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
CHECK(Script::cast(copy->script()).source() == *copy_source);
Handle<JSFunction> copy_fun =
Factory::JSFunctionBuilder{isolate, copy, isolate->native_context()}
.Build();
CHECK_NE(*orig_fun, *copy_fun);
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, nullptr).ToHandleChecked();
CHECK(orig_result.is_identical_to(copy_result));
Handle<String> expected =
isolate->factory()->NewStringFromAsciiChecked("string1");
CHECK(Handle<String>::cast(copy_result)->Equals(*expected));
CHECK_EQ(builtins_count, CountBuiltins());
delete cached_data;
}
TEST(CodeSerializerLargeCodeObject) {
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()
->DisableScriptAndEval(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
// The serializer only tests the shared code, which is always the unoptimized
// code. Don't even bother generating optimized code to avoid timeouts.
FLAG_always_opt = false;
base::Vector<const char> source = ConstructSource(
base::StaticCharVector("var j=1; if (j == 0) {"),
base::StaticCharVector(
"for (let i of Object.prototype) for (let k = 0; k < 0; ++k);"),
base::StaticCharVector("} j=7; j"), 2000);
Handle<String> source_str =
isolate->factory()->NewStringFromUtf8(source).ToHandleChecked();
Handle<JSObject> global(isolate->context().global_object(), isolate);
AlignedCachedData* cache = nullptr;
Handle<SharedFunctionInfo> orig =
CompileScriptAndProduceCache(isolate, source_str, ScriptDetails(), &cache,
v8::ScriptCompiler::kNoCompileOptions);
CHECK(isolate->heap()->InSpace(orig->abstract_code(isolate), LO_SPACE));
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, source_str, ScriptDetails(), cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
Handle<JSFunction> copy_fun =
Factory::JSFunctionBuilder{isolate, copy, isolate->native_context()}
.Build();
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, nullptr).ToHandleChecked();
int result_int;
CHECK(copy_result->ToInt32(&result_int));
CHECK_EQ(7, result_int);
delete cache;
source.Dispose();
}
TEST(CodeSerializerLargeCodeObjectWithIncrementalMarking) {
if (!FLAG_incremental_marking) return;
if (FLAG_never_compact) return;
ManualGCScope manual_gc_scope;
FLAG_always_opt = false;
const char* filter_flag = "--turbo-filter=NOTHING";
FlagList::SetFlagsFromString(filter_flag, strlen(filter_flag));
FLAG_manual_evacuation_candidates_selection = true;
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
isolate->compilation_cache()
->DisableScriptAndEval(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
base::Vector<const char> source = ConstructSource(
base::StaticCharVector("var j=1; if (j == 0) {"),
base::StaticCharVector("for (var i = 0; i < Object.prototype; i++);"),
base::StaticCharVector("} j=7; var s = 'happy_hippo'; j"), 20000);
Handle<String> source_str =
isolate->factory()->NewStringFromUtf8(source).ToHandleChecked();
// Create a string on an evacuation candidate in old space.
Handle<String> moving_object;
Page* ec_page;
{
AlwaysAllocateScopeForTesting always_allocate(heap);
heap::SimulateFullSpace(heap->old_space());
moving_object = isolate->factory()->InternalizeString(
isolate->factory()->NewStringFromAsciiChecked("happy_hippo"));
ec_page = Page::FromHeapObject(*moving_object);
}
Handle<JSObject> global(isolate->context().global_object(), isolate);
AlignedCachedData* cache = nullptr;
Handle<SharedFunctionInfo> orig =
CompileScriptAndProduceCache(isolate, source_str, ScriptDetails(), &cache,
v8::ScriptCompiler::kNoCompileOptions);
CHECK(heap->InSpace(orig->abstract_code(isolate), LO_SPACE));
// Pretend that incremental marking is on when deserialization begins.
heap::ForceEvacuationCandidate(ec_page);
heap::SimulateIncrementalMarking(heap, false);
IncrementalMarking* marking = heap->incremental_marking();
marking->StartBlackAllocationForTesting();
CHECK(marking->IsCompacting());
CHECK(MarkCompactCollector::IsOnEvacuationCandidate(*moving_object));
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, source_str, ScriptDetails(), cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
// We should have missed a write barrier. Complete incremental marking
// to flush out the bug.
heap::SimulateIncrementalMarking(heap, true);
CcTest::CollectAllGarbage();
Handle<JSFunction> copy_fun =
Factory::JSFunctionBuilder{isolate, copy, isolate->native_context()}
.Build();
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, nullptr).ToHandleChecked();
int result_int;
CHECK(copy_result->ToInt32(&result_int));
CHECK_EQ(7, result_int);
delete cache;
source.Dispose();
}
TEST(CodeSerializerLargeStrings) {
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
Factory* f = isolate->factory();
isolate->compilation_cache()
->DisableScriptAndEval(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
base::Vector<const char> source_s = ConstructSource(
base::StaticCharVector("var s = \""), base::StaticCharVector("abcdef"),
base::StaticCharVector("\";"), 1000000);
base::Vector<const char> source_t = ConstructSource(
base::StaticCharVector("var t = \""), base::StaticCharVector("uvwxyz"),
base::StaticCharVector("\"; s + t"), 999999);
Handle<String> source_str =
f->NewConsString(f->NewStringFromUtf8(source_s).ToHandleChecked(),
f->NewStringFromUtf8(source_t).ToHandleChecked())
.ToHandleChecked();
Handle<JSObject> global(isolate->context().global_object(), isolate);
AlignedCachedData* cache = nullptr;
Handle<SharedFunctionInfo> orig =
CompileScriptAndProduceCache(isolate, source_str, ScriptDetails(), &cache,
v8::ScriptCompiler::kNoCompileOptions);
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, source_str, ScriptDetails(), cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
Handle<JSFunction> copy_fun =
Factory::JSFunctionBuilder{isolate, copy, isolate->native_context()}
.Build();
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, nullptr).ToHandleChecked();
CHECK_EQ(6 * 1999999, Handle<String>::cast(copy_result)->length());
Handle<Object> property = JSReceiver::GetDataProperty(
isolate->global_object(), f->NewStringFromAsciiChecked("s"));
CHECK(isolate->heap()->InSpace(HeapObject::cast(*property), LO_SPACE));
property = JSReceiver::GetDataProperty(isolate->global_object(),
f->NewStringFromAsciiChecked("t"));
CHECK(isolate->heap()->InSpace(HeapObject::cast(*property), LO_SPACE));
// Make sure we do not serialize too much, e.g. include the source string.
CHECK_LT(cache->length(), 13000000);
delete cache;
source_s.Dispose();
source_t.Dispose();
}
TEST(CodeSerializerThreeBigStrings) {
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
Factory* f = isolate->factory();
isolate->compilation_cache()
->DisableScriptAndEval(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
const int32_t length_of_a = kMaxRegularHeapObjectSize * 2;
const int32_t length_of_b = kMaxRegularHeapObjectSize / 2;
const int32_t length_of_c = kMaxRegularHeapObjectSize / 2;
base::Vector<const char> source_a = ConstructSource(
base::StaticCharVector("var a = \""), base::StaticCharVector("a"),
base::StaticCharVector("\";"), length_of_a);
Handle<String> source_a_str =
f->NewStringFromUtf8(source_a).ToHandleChecked();
base::Vector<const char> source_b = ConstructSource(
base::StaticCharVector("var b = \""), base::StaticCharVector("b"),
base::StaticCharVector("\";"), length_of_b);
Handle<String> source_b_str =
f->NewStringFromUtf8(source_b).ToHandleChecked();
base::Vector<const char> source_c = ConstructSource(
base::StaticCharVector("var c = \""), base::StaticCharVector("c"),
base::StaticCharVector("\";"), length_of_c);
Handle<String> source_c_str =
f->NewStringFromUtf8(source_c).ToHandleChecked();
Handle<String> source_str =
f->NewConsString(
f->NewConsString(source_a_str, source_b_str).ToHandleChecked(),
source_c_str)
.ToHandleChecked();
Handle<JSObject> global(isolate->context().global_object(), isolate);
AlignedCachedData* cache = nullptr;
Handle<SharedFunctionInfo> orig =
CompileScriptAndProduceCache(isolate, source_str, ScriptDetails(), &cache,
v8::ScriptCompiler::kNoCompileOptions);
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, source_str, ScriptDetails(), cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
Handle<JSFunction> copy_fun =
Factory::JSFunctionBuilder{isolate, copy, isolate->native_context()}
.Build();
USE(Execution::Call(isolate, copy_fun, global, 0, nullptr));
v8::Maybe<int32_t> result =
CompileRun("(a + b).length")
->Int32Value(CcTest::isolate()->GetCurrentContext());
CHECK_EQ(length_of_a + length_of_b, result.FromJust());
result = CompileRun("(b + c).length")
->Int32Value(CcTest::isolate()->GetCurrentContext());
CHECK_EQ(length_of_b + length_of_c, result.FromJust());
Heap* heap = isolate->heap();
v8::Local<v8::String> result_str =
CompileRun("a")
->ToString(CcTest::isolate()->GetCurrentContext())
.ToLocalChecked();
CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), LO_SPACE));
result_str = CompileRun("b")
->ToString(CcTest::isolate()->GetCurrentContext())
.ToLocalChecked();
CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), OLD_SPACE));
result_str = CompileRun("c")
->ToString(CcTest::isolate()->GetCurrentContext())
.ToLocalChecked();
CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), OLD_SPACE));
delete cache;
source_a.Dispose();
source_b.Dispose();
source_c.Dispose();
}
class SerializerOneByteResource
: public v8::String::ExternalOneByteStringResource {
public:
SerializerOneByteResource(const char* data, size_t length)
: data_(data), length_(length), dispose_count_(0) {}
const char* data() const override { return data_; }
size_t length() const override { return length_; }
void Dispose() override { dispose_count_++; }
int dispose_count() { return dispose_count_; }
private:
const char* data_;
size_t length_;
int dispose_count_;
};
class SerializerTwoByteResource : public v8::String::ExternalStringResource {
public:
SerializerTwoByteResource(const char* data, size_t length)
: data_(AsciiToTwoByteString(data)), length_(length), dispose_count_(0) {}
~SerializerTwoByteResource() override { DeleteArray<const uint16_t>(data_); }
const uint16_t* data() const override { return data_; }
size_t length() const override { return length_; }
void Dispose() override { dispose_count_++; }
int dispose_count() { return dispose_count_; }
private:
const uint16_t* data_;
size_t length_;
int dispose_count_;
};
TEST(CodeSerializerExternalString) {
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()
->DisableScriptAndEval(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
// Obtain external internalized one-byte string.
SerializerOneByteResource one_byte_resource("one_byte", 8);
Handle<String> one_byte_string =
isolate->factory()->NewStringFromAsciiChecked("one_byte");
one_byte_string = isolate->factory()->InternalizeString(one_byte_string);
one_byte_string->MakeExternal(&one_byte_resource);
CHECK(one_byte_string->IsExternalOneByteString());
CHECK(one_byte_string->IsInternalizedString());
// Obtain external internalized two-byte string.
SerializerTwoByteResource two_byte_resource("two_byte", 8);
Handle<String> two_byte_string =
isolate->factory()->NewStringFromAsciiChecked("two_byte");
two_byte_string = isolate->factory()->InternalizeString(two_byte_string);
two_byte_string->MakeExternal(&two_byte_resource);
CHECK(two_byte_string->IsExternalTwoByteString());
CHECK(two_byte_string->IsInternalizedString());
const char* source =
"var o = {} \n"
"o.one_byte = 7; \n"
"o.two_byte = 8; \n"
"o.one_byte + o.two_byte; \n";
Handle<String> source_string =
isolate->factory()
->NewStringFromUtf8(base::CStrVector(source))
.ToHandleChecked();
Handle<JSObject> global(isolate->context().global_object(), isolate);
AlignedCachedData* cache = nullptr;
Handle<SharedFunctionInfo> orig = CompileScriptAndProduceCache(
isolate, source_string, ScriptDetails(), &cache,
v8::ScriptCompiler::kNoCompileOptions);
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, source_string, ScriptDetails(), cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
Handle<JSFunction> copy_fun =
Factory::JSFunctionBuilder{isolate, copy, isolate->native_context()}
.Build();
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, nullptr).ToHandleChecked();
CHECK_EQ(15.0, copy_result->Number());
// This avoids the GC from trying to free stack allocated resources.
i::Handle<i::ExternalOneByteString>::cast(one_byte_string)
->SetResource(isolate, nullptr);
i::Handle<i::ExternalTwoByteString>::cast(two_byte_string)
->SetResource(isolate, nullptr);
delete cache;
}
TEST(CodeSerializerLargeExternalString) {
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()
->DisableScriptAndEval(); // Disable same-isolate code cache.
Factory* f = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
// Create a huge external internalized string to use as variable name.
base::Vector<const char> string = ConstructSource(
base::StaticCharVector(""), base::StaticCharVector("abcdef"),
base::StaticCharVector(""), 999999);
Handle<String> name = f->NewStringFromUtf8(string).ToHandleChecked();
SerializerOneByteResource one_byte_resource(
reinterpret_cast<const char*>(string.begin()), string.length());
name = f->InternalizeString(name);
name->MakeExternal(&one_byte_resource);
CHECK(name->IsExternalOneByteString());
CHECK(name->IsInternalizedString());
CHECK(isolate->heap()->InSpace(*name, LO_SPACE));
// Create the source, which is "var <literal> = 42; <literal>".
Handle<String> source_str =
f->NewConsString(
f->NewConsString(f->NewStringFromAsciiChecked("var "), name)
.ToHandleChecked(),
f->NewConsString(f->NewStringFromAsciiChecked(" = 42; "), name)
.ToHandleChecked())
.ToHandleChecked();
Handle<JSObject> global(isolate->context().global_object(), isolate);
AlignedCachedData* cache = nullptr;
Handle<SharedFunctionInfo> orig =
CompileScriptAndProduceCache(isolate, source_str, ScriptDetails(), &cache,
v8::ScriptCompiler::kNoCompileOptions);
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, source_str, ScriptDetails(), cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
Handle<JSFunction> copy_fun =
Factory::JSFunctionBuilder{isolate, copy, isolate->native_context()}
.Build();
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, nullptr).ToHandleChecked();
CHECK_EQ(42.0, copy_result->Number());
// This avoids the GC from trying to free stack allocated resources.
i::Handle<i::ExternalOneByteString>::cast(name)->SetResource(isolate,
nullptr);
delete cache;
string.Dispose();
}
TEST(CodeSerializerExternalScriptName) {
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()
->DisableScriptAndEval(); // Disable same-isolate code cache.
Factory* f = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
const char* source =
"var a = [1, 2, 3, 4];"
"a.reduce(function(x, y) { return x + y }, 0)";
Handle<String> source_string =
f->NewStringFromUtf8(base::CStrVector(source)).ToHandleChecked();
const SerializerOneByteResource one_byte_resource("one_byte", 8);
Handle<String> name =
f->NewExternalStringFromOneByte(&one_byte_resource).ToHandleChecked();
CHECK(name->IsExternalOneByteString());
CHECK(!name->IsInternalizedString());
Handle<JSObject> global(isolate->context().global_object(), isolate);
AlignedCachedData* cache = nullptr;
Handle<SharedFunctionInfo> orig = CompileScriptAndProduceCache(
isolate, source_string, ScriptDetails(name), &cache,
v8::ScriptCompiler::kNoCompileOptions);
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, source_string, ScriptDetails(name), cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
Handle<JSFunction> copy_fun =
Factory::JSFunctionBuilder{isolate, copy, isolate->native_context()}
.Build();
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, nullptr).ToHandleChecked();
CHECK_EQ(10.0, copy_result->Number());
// This avoids the GC from trying to free stack allocated resources.
i::Handle<i::ExternalOneByteString>::cast(name)->SetResource(isolate,
nullptr);
delete cache;
}
static bool toplevel_test_code_event_found = false;
static void SerializerCodeEventListener(const v8::JitCodeEvent* event) {
if (event->type == v8::JitCodeEvent::CODE_ADDED &&
(memcmp(event->name.str, "Script:~ test", 13) == 0 ||
memcmp(event->name.str, "Script: test", 12) == 0)) {
toplevel_test_code_event_found = true;
}
}
v8::ScriptCompiler::CachedData* CompileRunAndProduceCache(
const char* source, CodeCacheType cacheType = CodeCacheType::kLazy) {
v8::ScriptCompiler::CachedData* cache;
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate1 = v8::Isolate::New(create_params);
{
v8::Isolate::Scope iscope(isolate1);
v8::HandleScope scope(isolate1);
v8::Local<v8::Context> context = v8::Context::New(isolate1);
v8::Context::Scope context_scope(context);
v8::Local<v8::String> source_str = v8_str(source);
v8::ScriptOrigin origin(isolate1, v8_str("test"));
v8::ScriptCompiler::Source source(source_str, origin);
v8::ScriptCompiler::CompileOptions options;
switch (cacheType) {
case CodeCacheType::kEager:
options = v8::ScriptCompiler::kEagerCompile;
break;
case CodeCacheType::kLazy:
case CodeCacheType::kAfterExecute:
options = v8::ScriptCompiler::kNoCompileOptions;
break;
default:
UNREACHABLE();
}
v8::Local<v8::UnboundScript> script =
v8::ScriptCompiler::CompileUnboundScript(isolate1, &source, options)
.ToLocalChecked();
if (cacheType != CodeCacheType::kAfterExecute) {
cache = ScriptCompiler::CreateCodeCache(script);
}
v8::Local<v8::Value> result = script->BindToCurrentContext()
->Run(isolate1->GetCurrentContext())
.ToLocalChecked();
v8::Local<v8::String> result_string =
result->ToString(isolate1->GetCurrentContext()).ToLocalChecked();
CHECK(result_string->Equals(isolate1->GetCurrentContext(), v8_str("abcdef"))
.FromJust());
if (cacheType == CodeCacheType::kAfterExecute) {
cache = ScriptCompiler::CreateCodeCache(script);
}
CHECK(cache);
}
isolate1->Dispose();
return cache;
}
TEST(CodeSerializerIsolates) {
const char* source = "function f() { return 'abc'; }; f() + 'def'";
v8::ScriptCompiler::CachedData* cache = CompileRunAndProduceCache(source);
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate2 = v8::Isolate::New(create_params);
isolate2->SetJitCodeEventHandler(v8::kJitCodeEventDefault,
SerializerCodeEventListener);
toplevel_test_code_event_found = false;
{
v8::Isolate::Scope iscope(isolate2);
v8::HandleScope scope(isolate2);
v8::Local<v8::Context> context = v8::Context::New(isolate2);
v8::Context::Scope context_scope(context);
v8::Local<v8::String> source_str = v8_str(source);
v8::ScriptOrigin origin(isolate2, v8_str("test"));
v8::ScriptCompiler::Source source(source_str, origin, cache);
v8::Local<v8::UnboundScript> script;
{
DisallowCompilation no_compile(reinterpret_cast<Isolate*>(isolate2));
script = v8::ScriptCompiler::CompileUnboundScript(
isolate2, &source, v8::ScriptCompiler::kConsumeCodeCache)
.ToLocalChecked();
}
CHECK(!cache->rejected);
v8::Local<v8::Value> result = script->BindToCurrentContext()
->Run(isolate2->GetCurrentContext())
.ToLocalChecked();
CHECK(result->ToString(isolate2->GetCurrentContext())
.ToLocalChecked()
->Equals(isolate2->GetCurrentContext(), v8_str("abcdef"))
.FromJust());
}
CHECK(toplevel_test_code_event_found);
isolate2->Dispose();
}
TEST(CodeSerializerIsolatesEager) {
const char* source =
"function f() {"
" return function g() {"
" return 'abc';"
" }"
"}"
"f()() + 'def'";
v8::ScriptCompiler::CachedData* cache =
CompileRunAndProduceCache(source, CodeCacheType::kEager);
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate2 = v8::Isolate::New(create_params);
isolate2->SetJitCodeEventHandler(v8::kJitCodeEventDefault,
SerializerCodeEventListener);
toplevel_test_code_event_found = false;
{
v8::Isolate::Scope iscope(isolate2);
v8::HandleScope scope(isolate2);
v8::Local<v8::Context> context = v8::Context::New(isolate2);
v8::Context::Scope context_scope(context);
v8::Local<v8::String> source_str = v8_str(source);
v8::ScriptOrigin origin(isolate2, v8_str("test"));
v8::ScriptCompiler::Source source(source_str, origin, cache);
v8::Local<v8::UnboundScript> script;
{
DisallowCompilation no_compile(reinterpret_cast<Isolate*>(isolate2));
script = v8::ScriptCompiler::CompileUnboundScript(
isolate2, &source, v8::ScriptCompiler::kConsumeCodeCache)
.ToLocalChecked();
}
CHECK(!cache->rejected);
v8::Local<v8::Value> result = script->BindToCurrentContext()
->Run(isolate2->GetCurrentContext())
.ToLocalChecked();
CHECK(result->ToString(isolate2->GetCurrentContext())
.ToLocalChecked()
->Equals(isolate2->GetCurrentContext(), v8_str("abcdef"))
.FromJust());
}
CHECK(toplevel_test_code_event_found);
isolate2->Dispose();
}
TEST(CodeSerializerAfterExecute) {
// We test that no compilations happen when running this code. Forcing
// to always optimize breaks this test.
bool prev_always_opt_value = FLAG_always_opt;
FLAG_always_opt = false;
const char* source = "function f() { return 'abc'; }; f() + 'def'";
v8::ScriptCompiler::CachedData* cache =
CompileRunAndProduceCache(source, CodeCacheType::kAfterExecute);
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate2 = v8::Isolate::New(create_params);
Isolate* i_isolate2 = reinterpret_cast<Isolate*>(isolate2);
{
v8::Isolate::Scope iscope(isolate2);
v8::HandleScope scope(isolate2);
v8::Local<v8::Context> context = v8::Context::New(isolate2);
v8::Context::Scope context_scope(context);
v8::Local<v8::String> source_str = v8_str(source);
v8::ScriptOrigin origin(isolate2, v8_str("test"));
v8::ScriptCompiler::Source source(source_str, origin, cache);
v8::Local<v8::UnboundScript> script;
{
DisallowCompilation no_compile_expected(i_isolate2);
script = v8::ScriptCompiler::CompileUnboundScript(
isolate2, &source, v8::ScriptCompiler::kConsumeCodeCache)
.ToLocalChecked();
}
CHECK(!cache->rejected);
Handle<SharedFunctionInfo> sfi = v8::Utils::OpenHandle(*script);
CHECK(sfi->HasBytecodeArray());
BytecodeArray bytecode = sfi->GetBytecodeArray(i_isolate2);
CHECK_EQ(bytecode.osr_loop_nesting_level(), 0);
{
DisallowCompilation no_compile_expected(i_isolate2);
v8::Local<v8::Value> result = script->BindToCurrentContext()
->Run(isolate2->GetCurrentContext())
.ToLocalChecked();
v8::Local<v8::String> result_string =
result->ToString(isolate2->GetCurrentContext()).ToLocalChecked();
CHECK(
result_string->Equals(isolate2->GetCurrentContext(), v8_str("abcdef"))
.FromJust());
}
}
isolate2->Dispose();
// Restore the flags.
FLAG_always_opt = prev_always_opt_value;
}
TEST(CodeSerializerFlagChange) {
const char* source = "function f() { return 'abc'; }; f() + 'def'";
v8::ScriptCompiler::CachedData* cache = CompileRunAndProduceCache(source);
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate2 = v8::Isolate::New(create_params);
FLAG_allow_natives_syntax = true; // Flag change should trigger cache reject.
FlagList::EnforceFlagImplications();
{
v8::Isolate::Scope iscope(isolate2);
v8::HandleScope scope(isolate2);
v8::Local<v8::Context> context = v8::Context::New(isolate2);
v8::Context::Scope context_scope(context);
v8::Local<v8::String> source_str = v8_str(source);
v8::ScriptOrigin origin(isolate2, v8_str("test"));
v8::ScriptCompiler::Source source(source_str, origin, cache);
v8::ScriptCompiler::CompileUnboundScript(
isolate2, &source, v8::ScriptCompiler::kConsumeCodeCache)
.ToLocalChecked();
CHECK(cache->rejected);
}
isolate2->Dispose();
}
TEST(CodeSerializerBitFlip) {
const char* source = "function f() { return 'abc'; }; f() + 'def'";
v8::ScriptCompiler::CachedData* cache = CompileRunAndProduceCache(source);
// Arbitrary bit flip.
int arbitrary_spot = 237;
CHECK_LT(arbitrary_spot, cache->length);
const_cast<uint8_t*>(cache->data)[arbitrary_spot] ^= 0x40;
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate2 = v8::Isolate::New(create_params);
{
v8::Isolate::Scope iscope(isolate2);
v8::HandleScope scope(isolate2);
v8::Local<v8::Context> context = v8::Context::New(isolate2);
v8::Context::Scope context_scope(context);
v8::Local<v8::String> source_str = v8_str(source);
v8::ScriptOrigin origin(isolate2, v8_str("test"));
v8::ScriptCompiler::Source source(source_str, origin, cache);
v8::ScriptCompiler::CompileUnboundScript(
isolate2, &source, v8::ScriptCompiler::kConsumeCodeCache)
.ToLocalChecked();
CHECK(cache->rejected);
}
isolate2->Dispose();
}
TEST(CodeSerializerWithHarmonyScoping) {
const char* source1 = "'use strict'; let x = 'X'";
const char* source2 = "'use strict'; let y = 'Y'";
const char* source3 = "'use strict'; x + y";
v8::ScriptCompiler::CachedData* cache;
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate1 = v8::Isolate::New(create_params);
{
v8::Isolate::Scope iscope(isolate1);
v8::HandleScope scope(isolate1);
v8::Local<v8::Context> context = v8::Context::New(isolate1);
v8::Context::Scope context_scope(context);
CompileRun(source1);
CompileRun(source2);
v8::Local<v8::String> source_str = v8_str(source3);
v8::ScriptOrigin origin(isolate1, v8_str("test"));
v8::ScriptCompiler::Source source(source_str, origin);
v8::Local<v8::UnboundScript> script =
v8::ScriptCompiler::CompileUnboundScript(
isolate1, &source, v8::ScriptCompiler::kNoCompileOptions)
.ToLocalChecked();
cache = v8::ScriptCompiler::CreateCodeCache(script);
CHECK(cache);
v8::Local<v8::Value> result = script->BindToCurrentContext()
->Run(isolate1->GetCurrentContext())
.ToLocalChecked();
v8::Local<v8::String> result_str =
result->ToString(isolate1->GetCurrentContext()).ToLocalChecked();
CHECK(result_str->Equals(isolate1->GetCurrentContext(), v8_str("XY"))
.FromJust());
}
isolate1->Dispose();
v8::Isolate* isolate2 = v8::Isolate::New(create_params);
{
v8::Isolate::Scope iscope(isolate2);
v8::HandleScope scope(isolate2);
v8::Local<v8::Context> context = v8::Context::New(isolate2);
v8::Context::Scope context_scope(context);
// Reverse order of prior running scripts.
CompileRun(source2);
CompileRun(source1);
v8::Local<v8::String> source_str = v8_str(source3);
v8::ScriptOrigin origin(isolate2, v8_str("test"));
v8::ScriptCompiler::Source source(source_str, origin, cache);
v8::Local<v8::UnboundScript> script;
{
DisallowCompilation no_compile(reinterpret_cast<Isolate*>(isolate2));
script = v8::ScriptCompiler::CompileUnboundScript(
isolate2, &source, v8::ScriptCompiler::kConsumeCodeCache)
.ToLocalChecked();
}
v8::Local<v8::Value> result = script->BindToCurrentContext()
->Run(isolate2->GetCurrentContext())
.ToLocalChecked();
v8::Local<v8::String> result_str =
result->ToString(isolate2->GetCurrentContext()).ToLocalChecked();
CHECK(result_str->Equals(isolate2->GetCurrentContext(), v8_str("XY"))
.FromJust());
}
isolate2->Dispose();
}
TEST(Regress503552) {
if (!FLAG_incremental_marking) return;
// Test that the code serializer can deal with weak cells that form a linked
// list during incremental marking.
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
HandleScope scope(isolate);
Handle<String> source = isolate->factory()->NewStringFromAsciiChecked(
"function f() {} function g() {}");
AlignedCachedData* cached_data = nullptr;
Handle<SharedFunctionInfo> shared = CompileScriptAndProduceCache(
isolate, source, ScriptDetails(), &cached_data,
v8::ScriptCompiler::kNoCompileOptions);
delete cached_data;
heap::SimulateIncrementalMarking(isolate->heap());
v8::ScriptCompiler::CachedData* cache_data =
CodeSerializer::Serialize(shared);
delete cache_data;
}
UNINITIALIZED_TEST(SnapshotCreatorMultipleContexts) {
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
v8::StartupData blob;
{
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CompileRun("var f = function() { return 1; }");
creator.SetDefaultContext(context);
}
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CompileRun("var f = function() { return 2; }");
CHECK_EQ(0u, creator.AddContext(context));
}
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
CHECK_EQ(1u, creator.AddContext(context));
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 1);
}
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context =
v8::Context::FromSnapshot(isolate, 0).ToLocalChecked();
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 2);
}
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context =
v8::Context::FromSnapshot(isolate, 1).ToLocalChecked();
v8::Context::Scope context_scope(context);
ExpectUndefined("this.f");
}
}
isolate->Dispose();
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
static int serialized_static_field = 314;
static void SerializedCallback(
const v8::FunctionCallbackInfo<v8::Value>& args) {
if (args.Data()->IsExternal()) {
CHECK_EQ(args.Data().As<v8::External>()->Value(),
static_cast<void*>(&serialized_static_field));
int* value =
reinterpret_cast<int*>(args.Data().As<v8::External>()->Value());
(*value)++;
}
args.GetReturnValue().Set(v8_num(42));
}
static void SerializedCallbackReplacement(
const v8::FunctionCallbackInfo<v8::Value>& args) {
args.GetReturnValue().Set(v8_num(1337));
}
static void NamedPropertyGetterForSerialization(
v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info) {
if (name->Equals(info.GetIsolate()->GetCurrentContext(), v8_str("x"))
.FromJust()) {
info.GetReturnValue().Set(v8_num(2016));
}
}
static void AccessorForSerialization(
v8::Local<v8::String> property,
const v8::PropertyCallbackInfo<v8::Value>& info) {
info.GetReturnValue().Set(v8_num(2017));
}
static SerializerOneByteResource serializable_one_byte_resource("one_byte", 8);
static SerializerTwoByteResource serializable_two_byte_resource("two_byte", 8);
intptr_t original_external_references[] = {
reinterpret_cast<intptr_t>(SerializedCallback),
reinterpret_cast<intptr_t>(&serialized_static_field),
reinterpret_cast<intptr_t>(&NamedPropertyGetterForSerialization),
reinterpret_cast<intptr_t>(&AccessorForSerialization),
reinterpret_cast<intptr_t>(&serialized_static_field), // duplicate entry
reinterpret_cast<intptr_t>(&serializable_one_byte_resource),
reinterpret_cast<intptr_t>(&serializable_two_byte_resource),
0};
intptr_t replaced_external_references[] = {
reinterpret_cast<intptr_t>(SerializedCallbackReplacement),
reinterpret_cast<intptr_t>(&serialized_static_field),
reinterpret_cast<intptr_t>(&NamedPropertyGetterForSerialization),
reinterpret_cast<intptr_t>(&AccessorForSerialization),
reinterpret_cast<intptr_t>(&serialized_static_field),
reinterpret_cast<intptr_t>(&serializable_one_byte_resource),
reinterpret_cast<intptr_t>(&serializable_two_byte_resource),
0};
intptr_t short_external_references[] = {
reinterpret_cast<intptr_t>(SerializedCallbackReplacement), 0};
UNINITIALIZED_TEST(SnapshotCreatorExternalReferences) {
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
v8::StartupData blob;
{
v8::SnapshotCreator creator(original_external_references);
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
v8::Local<v8::FunctionTemplate> callback =
v8::FunctionTemplate::New(isolate, SerializedCallback);
v8::Local<v8::Value> function =
callback->GetFunction(context).ToLocalChecked();
CHECK(context->Global()->Set(context, v8_str("f"), function).FromJust());
CHECK(context->Global()
->Set(context, v8_str("one_byte"),
v8::String::NewExternalOneByte(
isolate, &serializable_one_byte_resource)
.ToLocalChecked())
.FromJust());
CHECK(context->Global()
->Set(context, v8_str("two_byte"),
v8::String::NewExternalTwoByte(
isolate, &serializable_two_byte_resource)
.ToLocalChecked())
.FromJust());
ExpectInt32("f()", 42);
ExpectString("one_byte", "one_byte");
ExpectString("two_byte", "two_byte");
creator.SetDefaultContext(context);
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
CHECK_EQ(1, serializable_one_byte_resource.dispose_count());
CHECK_EQ(1, serializable_two_byte_resource.dispose_count());
// Deserialize with the original external reference.
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
params.external_references = original_external_references;
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 42);
ExpectString("one_byte", "one_byte");
ExpectString("two_byte", "two_byte");
v8::Local<v8::String> one_byte = CompileRun("one_byte").As<v8::String>();
v8::Local<v8::String> two_byte = CompileRun("two_byte").As<v8::String>();
CHECK(one_byte->IsExternalOneByte());
CHECK(!one_byte->IsExternalTwoByte());
CHECK(!two_byte->IsExternalOneByte());
CHECK(two_byte->IsExternalTwoByte());
}
isolate->Dispose();
}
CHECK_EQ(2, serializable_one_byte_resource.dispose_count());
CHECK_EQ(2, serializable_two_byte_resource.dispose_count());
// Deserialize with some other external reference.
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
params.external_references = replaced_external_references;
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 1337);
}
isolate->Dispose();
}
CHECK_EQ(3, serializable_one_byte_resource.dispose_count());
CHECK_EQ(3, serializable_two_byte_resource.dispose_count());
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(SnapshotCreatorShortExternalReferences) {
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
v8::StartupData blob;
{
v8::SnapshotCreator creator(original_external_references);
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
v8::Local<v8::FunctionTemplate> callback =
v8::FunctionTemplate::New(isolate, SerializedCallback);
v8::Local<v8::Value> function =
callback->GetFunction(context).ToLocalChecked();
CHECK(context->Global()->Set(context, v8_str("f"), function).FromJust());
ExpectInt32("f()", 42);
creator.SetDefaultContext(context);
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
// Deserialize with an incomplete list of external references.
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
params.external_references = short_external_references;
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 1337);
}
isolate->Dispose();
}
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
v8::StartupData CreateSnapshotWithDefaultAndCustom() {
v8::SnapshotCreator creator(original_external_references);
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
{
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CompileRun("function f() { return 41; }");
creator.SetDefaultContext(context);
ExpectInt32("f()", 41);
}
{
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
v8::Local<v8::FunctionTemplate> function_template =
v8::FunctionTemplate::New(isolate, SerializedCallback);
v8::Local<v8::Value> function =
function_template->GetFunction(context).ToLocalChecked();
CHECK(context->Global()->Set(context, v8_str("f"), function).FromJust());
v8::Local<v8::ObjectTemplate> object_template =
v8::ObjectTemplate::New(isolate);
object_template->SetAccessor(v8_str("x"), AccessorForSerialization);
v8::Local<v8::Object> object =
object_template->NewInstance(context).ToLocalChecked();
CHECK(context->Global()->Set(context, v8_str("o"), object).FromJust());
ExpectInt32("f()", 42);
ExpectInt32("o.x", 2017);
creator.AddContext(context);
}
}
return creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
UNINITIALIZED_TEST(SnapshotCreatorNoExternalReferencesDefault) {
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
v8::StartupData blob = CreateSnapshotWithDefaultAndCustom();
// Deserialize with an incomplete list of external references.
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
params.external_references = nullptr;
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 41);
}
isolate->Dispose();
}
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
v8::StartupData CreateCustomSnapshotWithPreparseDataAndNoOuterScope() {
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
{
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CompileRun(
"var foo = {\n"
" // This function is not top-level, but also has no outer scope.\n"
" bar: function(){\n"
" // Add an inner function so that the outer one has preparse\n"
" // scope data.\n"
" return function(){}\n"
" }\n"
"};\n");
creator.SetDefaultContext(context);
}
}
return creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
UNINITIALIZED_TEST(SnapshotCreatorPreparseDataAndNoOuterScope) {
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
v8::StartupData blob = CreateCustomSnapshotWithPreparseDataAndNoOuterScope();
// Deserialize with an incomplete list of external references.
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
}
isolate->Dispose();
}
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
v8::StartupData CreateCustomSnapshotArrayJoinWithKeep() {
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
{
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CompileRun(
"[].join('');\n"
"function g() { return String([1,2,3]); }\n");
ExpectString("g()", "1,2,3");
creator.SetDefaultContext(context);
}
}
return creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kKeep);
}
UNINITIALIZED_TEST(SnapshotCreatorArrayJoinWithKeep) {
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
v8::StartupData blob = CreateCustomSnapshotArrayJoinWithKeep();
// Deserialize with an incomplete list of external references.
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
ExpectString("g()", "1,2,3");
}
isolate->Dispose();
}
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
v8::StartupData CreateCustomSnapshotWithDuplicateFunctions() {
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
{
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CompileRun(
"function f() { return (() => 'a'); }\n"
"let g1 = f();\n"
"let g2 = f();\n");
ExpectString("g1()", "a");
ExpectString("g2()", "a");
creator.SetDefaultContext(context);
}
}
return creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kKeep);
}
UNINITIALIZED_TEST(SnapshotCreatorDuplicateFunctions) {
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
v8::StartupData blob = CreateCustomSnapshotWithDuplicateFunctions();
// Deserialize with an incomplete list of external references.
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
ExpectString("g1()", "a");
ExpectString("g2()", "a");
}
isolate->Dispose();
}
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
TEST(SnapshotCreatorNoExternalReferencesCustomFail1) {
DisableAlwaysOpt();
v8::StartupData blob = CreateSnapshotWithDefaultAndCustom();
// Deserialize with an incomplete list of external references.
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
params.external_references = nullptr;
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context =
v8::Context::FromSnapshot(isolate, 0).ToLocalChecked();
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 42);
}
isolate->Dispose();
}
delete[] blob.data;
}
TEST(SnapshotCreatorNoExternalReferencesCustomFail2) {
DisableAlwaysOpt();
v8::StartupData blob = CreateSnapshotWithDefaultAndCustom();
// Deserialize with an incomplete list of external references.
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
params.external_references = nullptr;
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context =
v8::Context::FromSnapshot(isolate, 0).ToLocalChecked();
v8::Context::Scope context_scope(context);
ExpectInt32("o.x", 2017);
}
isolate->Dispose();
}
delete[] blob.data;
}
UNINITIALIZED_TEST(SnapshotCreatorUnknownExternalReferences) {
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
v8::Local<v8::FunctionTemplate> callback =
v8::FunctionTemplate::New(isolate, SerializedCallback);
v8::Local<v8::Value> function =
callback->GetFunction(context).ToLocalChecked();
CHECK(context->Global()->Set(context, v8_str("f"), function).FromJust());
ExpectInt32("f()", 42);
creator.SetDefaultContext(context);
}
v8::StartupData blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(SnapshotCreatorTemplates) {
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
v8::StartupData blob;
{
InternalFieldData* a1 = new InternalFieldData{11};
InternalFieldData* b1 = new InternalFieldData{20};
InternalFieldData* c1 = new InternalFieldData{30};
v8::SnapshotCreator creator(original_external_references);
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
v8::ExtensionConfiguration* no_extension = nullptr;
v8::Local<v8::ObjectTemplate> global_template =
v8::ObjectTemplate::New(isolate);
v8::Local<v8::External> external =
v8::External::New(isolate, &serialized_static_field);
v8::Local<v8::FunctionTemplate> callback =
v8::FunctionTemplate::New(isolate, SerializedCallback, external);
global_template->Set(isolate, "f", callback);
v8::Local<v8::Context> context =
v8::Context::New(isolate, no_extension, global_template);
creator.SetDefaultContext(context);
context = v8::Context::New(isolate, no_extension, global_template);
v8::Local<v8::ObjectTemplate> object_template =
v8::ObjectTemplate::New(isolate);
object_template->SetInternalFieldCount(3);
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 42);
CHECK_EQ(315, serialized_static_field);
v8::Local<v8::Object> a =
object_template->NewInstance(context).ToLocalChecked();
v8::Local<v8::Object> b =
object_template->NewInstance(context).ToLocalChecked();
v8::Local<v8::Object> c =
object_template->NewInstance(context).ToLocalChecked();
v8::Local<v8::External> null_external =
v8::External::New(isolate, nullptr);
v8::Local<v8::External> field_external =
v8::External::New(isolate, &serialized_static_field);
a->SetInternalField(0, b);
b->SetInternalField(0, c);
a->SetAlignedPointerInInternalField(1, a1);
b->SetAlignedPointerInInternalField(1, b1);
c->SetAlignedPointerInInternalField(1, c1);
a->SetInternalField(2, null_external);
b->SetInternalField(2, field_external);
c->SetInternalField(2, v8_num(35));
CHECK(context->Global()->Set(context, v8_str("a"), a).FromJust());
CHECK_EQ(0u,
creator.AddContext(context, v8::SerializeInternalFieldsCallback(
SerializeInternalFields,
reinterpret_cast<void*>(2000))));
CHECK_EQ(0u, creator.AddData(callback));
CHECK_EQ(1u, creator.AddData(global_template));
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
delete a1;
delete b1;
delete c1;
}
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
params.external_references = original_external_references;
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
{
// Create a new context without a new object template.
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context =
v8::Context::FromSnapshot(
isolate, 0,
v8::DeserializeInternalFieldsCallback(
DeserializeInternalFields, reinterpret_cast<void*>(2017)))
.ToLocalChecked();
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 42);
CHECK_EQ(316, serialized_static_field);
// Retrieve the snapshotted object template.
v8::Local<v8::ObjectTemplate> obj_template =
isolate->GetDataFromSnapshotOnce<v8::ObjectTemplate>(1)
.ToLocalChecked();
CHECK(!obj_template.IsEmpty());
v8::Local<v8::Object> object =
obj_template->NewInstance(context).ToLocalChecked();
CHECK(context->Global()->Set(context, v8_str("o"), object).FromJust());
ExpectInt32("o.f()", 42);
CHECK_EQ(317, serialized_static_field);
// Check that it instantiates to the same prototype.
ExpectTrue("o.f.prototype === f.prototype");
// Retrieve the snapshotted function template.
v8::Local<v8::FunctionTemplate> fun_template =
isolate->GetDataFromSnapshotOnce<v8::FunctionTemplate>(0)
.ToLocalChecked();
CHECK(!fun_template.IsEmpty());
v8::Local<v8::Function> fun =
fun_template->GetFunction(context).ToLocalChecked();
CHECK(context->Global()->Set(context, v8_str("g"), fun).FromJust());
ExpectInt32("g()", 42);
// Check that it instantiates to the same prototype.
ExpectTrue("g.prototype === f.prototype");
// Retrieve embedder fields.
v8::Local<v8::Object> a = context->Global()
->Get(context, v8_str("a"))
.ToLocalChecked()
->ToObject(context)
.ToLocalChecked();
v8::Local<v8::Object> b =
a->GetInternalField(0)->ToObject(context).ToLocalChecked();
v8::Local<v8::Object> c =
b->GetInternalField(0)->ToObject(context).ToLocalChecked();
InternalFieldData* a1 = reinterpret_cast<InternalFieldData*>(
a->GetAlignedPointerFromInternalField(1));
v8::Local<v8::Value> a2 = a->GetInternalField(2);
InternalFieldData* b1 = reinterpret_cast<InternalFieldData*>(
b->GetAlignedPointerFromInternalField(1));
v8::Local<v8::Value> b2 = b->GetInternalField(2);
v8::Local<v8::Value> c0 = c->GetInternalField(0);
InternalFieldData* c1 = reinterpret_cast<InternalFieldData*>(
c->GetAlignedPointerFromInternalField(1));
v8::Local<v8::Value> c2 = c->GetInternalField(2);
CHECK(c0->IsUndefined());
CHECK_EQ(11u, a1->data);
CHECK_EQ(20u, b1->data);
CHECK_EQ(30u, c1->data);
CHECK(a2->IsExternal());
CHECK_NULL(v8::Local<v8::External>::Cast(a2)->Value());
CHECK(b2->IsExternal());
CHECK_EQ(static_cast<void*>(&serialized_static_field),
v8::Local<v8::External>::Cast(b2)->Value());
CHECK(c2->IsInt32() && c2->Int32Value(context).FromJust() == 35);
// Calling GetDataFromSnapshotOnce again returns an empty MaybeLocal.
CHECK(
isolate->GetDataFromSnapshotOnce<v8::ObjectTemplate>(1).IsEmpty());
CHECK(isolate->GetDataFromSnapshotOnce<v8::FunctionTemplate>(0)
.IsEmpty());
CHECK(v8::Context::FromSnapshot(isolate, 1).IsEmpty());
for (auto data : deserialized_data) delete data;
deserialized_data.clear();
}
}
isolate->Dispose();
}
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
MaybeLocal<v8::Module> ResolveCallback(Local<v8::Context> context,
Local<v8::String> specifier,
Local<v8::FixedArray> import_assertions,
Local<v8::Module> referrer) {
return {};
}
UNINITIALIZED_TEST(SnapshotCreatorAddData) {
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
v8::StartupData blob;
// i::PerformCastCheck(Data*) should compile and be no-op
{
v8::Local<v8::Data> data;
i::PerformCastCheck(*data);
}
{
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
v8::Eternal<v8::Value> eternal_number;
v8::Persistent<v8::Value> persistent_number_1;
v8::Persistent<v8::Value> persistent_number_2;
v8::Persistent<v8::Context> persistent_context;
{
v8::HandleScope handle_scope(isolate);
eternal_number.Set(isolate, v8_num(2017));
persistent_number_1.Reset(isolate, v8_num(2018));
persistent_number_2.Reset(isolate, v8_num(2019));
v8::Local<v8::Context> context = v8::Context::New(isolate);
CHECK_EQ(0u, creator.AddData(context, persistent_number_2.Get(isolate)));
creator.SetDefaultContext(context);
context = v8::Context::New(isolate);
persistent_context.Reset(isolate, context);
v8::Context::Scope context_scope(context);
v8::Local<v8::Object> object = CompileRun("({ p: 12 })").As<v8::Object>();
v8::Local<v8::ObjectTemplate> object_template =
v8::ObjectTemplate::New(isolate);
object_template->SetInternalFieldCount(3);
v8::Local<v8::Private> private_symbol =
v8::Private::ForApi(isolate, v8_str("private_symbol"));
v8::Local<v8::Signature> signature =
v8::Signature::New(isolate, v8::FunctionTemplate::New(isolate));
v8::Local<v8::AccessorSignature> accessor_signature =
v8::AccessorSignature::New(isolate,
v8::FunctionTemplate::New(isolate));
v8::ScriptOrigin origin(isolate, v8_str(""), {}, {}, {}, {}, {}, {}, {},
true);
v8::ScriptCompiler::Source source(
v8::String::NewFromUtf8Literal(
isolate, "export let a = 42; globalThis.a = {};"),
origin);
v8::Local<v8::Module> module =
v8::ScriptCompiler::CompileModule(isolate, &source).ToLocalChecked();
module->InstantiateModule(context, ResolveCallback).ToChecked();
module->Evaluate(context).ToLocalChecked();
CHECK_EQ(0u, creator.AddData(context, object));
CHECK_EQ(1u, creator.AddData(context, v8_str("context-dependent")));
CHECK_EQ(2u, creator.AddData(context, persistent_number_1.Get(isolate)));
CHECK_EQ(3u, creator.AddData(context, object_template));
CHECK_EQ(4u, creator.AddData(context, persistent_context.Get(isolate)));
CHECK_EQ(5u, creator.AddData(context, module));
creator.AddContext(context);
CHECK_EQ(0u, creator.AddData(v8_str("context-independent")));
CHECK_EQ(1u, creator.AddData(eternal_number.Get(isolate)));
CHECK_EQ(2u, creator.AddData(object_template));
CHECK_EQ(3u, creator.AddData(v8::FunctionTemplate::New(isolate)));
CHECK_EQ(4u, creator.AddData(private_symbol));
CHECK_EQ(5u, creator.AddData(signature));
CHECK_EQ(6u, creator.AddData(accessor_signature));
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context =
v8::Context::FromSnapshot(isolate, 0).ToLocalChecked();
// Check serialized data on the context.
v8::Local<v8::Object> object =
context->GetDataFromSnapshotOnce<v8::Object>(0).ToLocalChecked();
CHECK(context->GetDataFromSnapshotOnce<v8::Object>(0).IsEmpty());
CHECK_EQ(12, object->Get(context, v8_str("p"))
.ToLocalChecked()
->Int32Value(context)
.FromJust());
v8::Local<v8::String> string =
context->GetDataFromSnapshotOnce<v8::String>(1).ToLocalChecked();
CHECK(context->GetDataFromSnapshotOnce<v8::String>(1).IsEmpty());
CHECK(string->Equals(context, v8_str("context-dependent")).FromJust());
v8::Local<v8::Number> number =
context->GetDataFromSnapshotOnce<v8::Number>(2).ToLocalChecked();
CHECK(context->GetDataFromSnapshotOnce<v8::Number>(2).IsEmpty());
CHECK_EQ(2018, number->Int32Value(context).FromJust());
v8::Local<v8::ObjectTemplate> templ =
context->GetDataFromSnapshotOnce<v8::ObjectTemplate>(3)
.ToLocalChecked();
CHECK(context->GetDataFromSnapshotOnce<v8::ObjectTemplate>(3).IsEmpty());
CHECK_EQ(3, templ->InternalFieldCount());
v8::Local<v8::Context> serialized_context =
context->GetDataFromSnapshotOnce<v8::Context>(4).ToLocalChecked();
CHECK(context->GetDataFromSnapshotOnce<v8::Context>(4).IsEmpty());
CHECK_EQ(*v8::Utils::OpenHandle(*serialized_context),
*v8::Utils::OpenHandle(*context));
v8::Local<v8::Module> serialized_module =
context->GetDataFromSnapshotOnce<v8::Module>(5).ToLocalChecked();
CHECK(context->GetDataFromSnapshotOnce<v8::Context>(5).IsEmpty());
{
v8::Context::Scope context_scope(context);
v8::Local<v8::Object> mod_ns =
serialized_module->GetModuleNamespace().As<v8::Object>();
CHECK(mod_ns->Get(context, v8_str("a"))
.ToLocalChecked()
->StrictEquals(v8_num(42.0)));
}
CHECK(context->GetDataFromSnapshotOnce<v8::Value>(6).IsEmpty());
// Check serialized data on the isolate.
string = isolate->GetDataFromSnapshotOnce<v8::String>(0).ToLocalChecked();
CHECK(context->GetDataFromSnapshotOnce<v8::String>(0).IsEmpty());
CHECK(string->Equals(context, v8_str("context-independent")).FromJust());
number = isolate->GetDataFromSnapshotOnce<v8::Number>(1).ToLocalChecked();
CHECK(isolate->GetDataFromSnapshotOnce<v8::Number>(1).IsEmpty());
CHECK_EQ(2017, number->Int32Value(context).FromJust());
templ = isolate->GetDataFromSnapshotOnce<v8::ObjectTemplate>(2)
.ToLocalChecked();
CHECK(isolate->GetDataFromSnapshotOnce<v8::ObjectTemplate>(2).IsEmpty());
CHECK_EQ(3, templ->InternalFieldCount());
isolate->GetDataFromSnapshotOnce<v8::FunctionTemplate>(3)
.ToLocalChecked();
CHECK(
isolate->GetDataFromSnapshotOnce<v8::FunctionTemplate>(3).IsEmpty());
isolate->GetDataFromSnapshotOnce<v8::Private>(4).ToLocalChecked();
CHECK(isolate->GetDataFromSnapshotOnce<v8::Private>(4).IsEmpty());
isolate->GetDataFromSnapshotOnce<v8::Signature>(5).ToLocalChecked();
CHECK(isolate->GetDataFromSnapshotOnce<v8::Signature>(5).IsEmpty());
isolate->GetDataFromSnapshotOnce<v8::AccessorSignature>(6)
.ToLocalChecked();
CHECK(
isolate->GetDataFromSnapshotOnce<v8::AccessorSignature>(6).IsEmpty());
CHECK(isolate->GetDataFromSnapshotOnce<v8::Value>(7).IsEmpty());
}
isolate->Dispose();
}
{
SnapshotCreator creator(nullptr, &blob);
v8::Isolate* isolate = creator.GetIsolate();
{
// Adding data to a snapshot replaces the list of existing data.
v8::HandleScope hscope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
creator.SetDefaultContext(context);
context = v8::Context::FromSnapshot(isolate, 0).ToLocalChecked();
v8::Local<v8::String> string =
context->GetDataFromSnapshotOnce<v8::String>(1).ToLocalChecked();
CHECK(context->GetDataFromSnapshotOnce<v8::String>(1).IsEmpty());
CHECK(string->Equals(context, v8_str("context-dependent")).FromJust());
v8::Local<v8::Number> number =
isolate->GetDataFromSnapshotOnce<v8::Number>(1).ToLocalChecked();
CHECK(isolate->GetDataFromSnapshotOnce<v8::Number>(1).IsEmpty());
CHECK_EQ(2017, number->Int32Value(context).FromJust());
CHECK_EQ(0u, creator.AddData(context, v8_num(2016)));
CHECK_EQ(0u, creator.AddContext(context));
CHECK_EQ(0u, creator.AddData(v8_str("stuff")));
}
delete[] blob.data;
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
// Context where we did not re-add data no longer has data.
v8::Local<v8::Context> context = v8::Context::New(isolate);
CHECK(context->GetDataFromSnapshotOnce<v8::Object>(0).IsEmpty());
// Context where we re-added data has completely new ones.
context = v8::Context::FromSnapshot(isolate, 0).ToLocalChecked();
v8::Local<v8::Value> value =
context->GetDataFromSnapshotOnce<v8::Value>(0).ToLocalChecked();
CHECK_EQ(2016, value->Int32Value(context).FromJust());
CHECK(context->GetDataFromSnapshotOnce<v8::Value>(1).IsEmpty());
// Ditto for the isolate.
v8::Local<v8::String> string =
isolate->GetDataFromSnapshotOnce<v8::String>(0).ToLocalChecked();
CHECK(string->Equals(context, v8_str("stuff")).FromJust());
CHECK(context->GetDataFromSnapshotOnce<v8::String>(1).IsEmpty());
}
isolate->Dispose();
}
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
TEST(SnapshotCreatorUnknownHandles) {
DisableAlwaysOpt();
v8::StartupData blob;
{
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
v8::Eternal<v8::Value> eternal_number;
v8::Persistent<v8::Value> persistent_number;
{
v8::HandleScope handle_scope(isolate);
eternal_number.Set(isolate, v8_num(2017));
persistent_number.Reset(isolate, v8_num(2018));
v8::Local<v8::Context> context = v8::Context::New(isolate);
creator.SetDefaultContext(context);
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
delete[] blob.data;
}
UNINITIALIZED_TEST(SnapshotCreatorIncludeGlobalProxy) {
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
v8::StartupData blob;
{
v8::SnapshotCreator creator(original_external_references);
v8::Isolate* isolate = creator.GetIsolate();
{
// Set default context. This context implicitly does *not* serialize
// the global proxy, and upon deserialization one has to be created
// in the bootstrapper from the global object template.
// Side effects from extensions are persisted though.
v8::HandleScope handle_scope(isolate);
v8::Local<v8::ObjectTemplate> global_template =
v8::ObjectTemplate::New(isolate);
v8::Local<v8::FunctionTemplate> callback =
v8::FunctionTemplate::New(isolate, SerializedCallback);
global_template->Set(isolate, "f", callback);
global_template->SetHandler(v8::NamedPropertyHandlerConfiguration(
NamedPropertyGetterForSerialization));
v8::Local<v8::Context> context =
v8::Context::New(isolate, nullptr, global_template);
v8::Context::Scope context_scope(context);
CompileRun(
"function h() { return 13; };"
"function i() { return 14; };"
"var o = { p: 7 };");
ExpectInt32("f()", 42);
ExpectInt32("h()", 13);
ExpectInt32("o.p", 7);
ExpectInt32("x", 2016);
creator.SetDefaultContext(context);
}
{
// Add additional context. This context implicitly *does* serialize
// the global proxy, and upon deserialization one has to be created
// in the bootstrapper from the global object template.
// Side effects from extensions are persisted.
v8::HandleScope handle_scope(isolate);
v8::Local<v8::ObjectTemplate> global_template =
v8::ObjectTemplate::New(isolate);
v8::Local<v8::FunctionTemplate> callback =
v8::FunctionTemplate::New(isolate, SerializedCallback);
global_template->SetInternalFieldCount(3);
global_template->Set(isolate, "f", callback);
global_template->SetHandler(v8::NamedPropertyHandlerConfiguration(
NamedPropertyGetterForSerialization));
global_template->SetAccessor(v8_str("y"), AccessorForSerialization);
v8::Local<v8::Private> priv =
v8::Private::ForApi(isolate, v8_str("cached"));
global_template->SetAccessorProperty(
v8_str("cached"),
v8::FunctionTemplate::NewWithCache(isolate, SerializedCallback, priv,
v8::Local<v8::Value>()));
v8::Local<v8::Context> context =
v8::Context::New(isolate, nullptr, global_template);
v8::Context::Scope context_scope(context);
CHECK(context->Global()
->SetPrivate(context, priv, v8_str("cached string"))
.FromJust());
v8::Local<v8::Private> hidden =
v8::Private::ForApi(isolate, v8_str("hidden"));
CHECK(context->Global()
->SetPrivate(context, hidden, v8_str("hidden string"))
.FromJust());
ExpectInt32("f()", 42);
ExpectInt32("x", 2016);
ExpectInt32("y", 2017);
CHECK(v8_str("hidden string")
->Equals(context, context->Global()
->GetPrivate(context, hidden)
.ToLocalChecked())
.FromJust());
CHECK_EQ(0u,
creator.AddContext(context, v8::SerializeInternalFieldsCallback(
SerializeInternalFields,
reinterpret_cast<void*>(2016))));
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
{
v8::Isolate::CreateParams params;
params.snapshot_blob = &blob;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
params.external_references = original_external_references;
// Test-appropriate equivalent of v8::Isolate::New.
v8::Isolate* isolate = TestSerializer::NewIsolate(params);
{
v8::Isolate::Scope isolate_scope(isolate);
// We can introduce new extensions, which could override functions already
// in the snapshot.
auto extension =
std::make_unique<v8::Extension>("new extension",
"function i() { return 24; }"
"function j() { return 25; }"
"let a = 26;"
"try {"
" if (o.p == 7) o.p++;"
"} catch {}");
extension->set_auto_enable(true);
v8::RegisterExtension(std::move(extension));
{
// Create a new context from default context snapshot. This will
// create a new global object from a new global object template
// without the interceptor.
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 42);
ExpectInt32("h()", 13);
ExpectInt32("i()", 24);
ExpectInt32("j()", 25);
ExpectInt32("o.p", 8);
ExpectInt32("a", 26);
v8::TryCatch try_catch(isolate);
CHECK(CompileRun("x").IsEmpty());
CHECK(try_catch.HasCaught());
}
{
// Create a new context from first additional context snapshot. This
// will use the global object from the snapshot, including interceptor.
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context =
v8::Context::FromSnapshot(
isolate, 0,
v8::DeserializeInternalFieldsCallback(
DeserializeInternalFields, reinterpret_cast<void*>(2017)))
.ToLocalChecked();
{
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 42);
ExpectInt32("i()", 24);
ExpectInt32("j()", 25);
ExpectInt32("x", 2016);
v8::Local<v8::Private> hidden =
v8::Private::ForApi(isolate, v8_str("hidden"));
CHECK(v8_str("hidden string")
->Equals(context, context->Global()
->GetPrivate(context, hidden)
.ToLocalChecked())
.FromJust());
ExpectString("cached", "cached string");
}
v8::Local<v8::Object> global = context->Global();
CHECK_EQ(3, global->InternalFieldCount());
context->DetachGlobal();
// New context, but reuse global proxy.
v8::ExtensionConfiguration* no_extensions = nullptr;
v8::Local<v8::Context> context2 =
v8::Context::FromSnapshot(
isolate, 0,
v8::DeserializeInternalFieldsCallback(
DeserializeInternalFields, reinterpret_cast<void*>(2017)),
no_extensions, global)
.ToLocalChecked();
{
v8::Context::Scope context_scope(context2);
ExpectInt32("f()", 42);
ExpectInt32("i()", 24);
ExpectInt32("j()", 25);
ExpectInt32("x", 2016);
v8::Local<v8::Private> hidden =
v8::Private::ForApi(isolate, v8_str("hidden"));
CHECK(v8_str("hidden string")
->Equals(context2, context2->Global()
->GetPrivate(context2, hidden)
.ToLocalChecked())
.FromJust());
// Set cached accessor property again.
v8::Local<v8::Private> priv =
v8::Private::ForApi(isolate, v8_str("cached"));
CHECK(context2->Global()
->SetPrivate(context2, priv, v8_str("cached string 1"))
.FromJust());
ExpectString("cached", "cached string 1");
}
CHECK(context2->Global()->Equals(context2, global).FromJust());
}
}
isolate->Dispose();
}
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(ReinitializeHashSeedJSCollectionRehashable) {
DisableAlwaysOpt();
i::FLAG_rehash_snapshot = true;
i::FLAG_hash_seed = 42;
i::FLAG_allow_natives_syntax = true;
DisableEmbeddedBlobRefcounting();
v8::StartupData blob;
{
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
// Create an object with an ordered hash table.
CompileRun(
"var m = new Map();"
"m.set('a', 1);"
"m.set('b', 2);"
"var s = new Set();"
"s.add(1);"
"s.add(globalThis);");
ExpectInt32("m.get('b')", 2);
ExpectTrue("s.has(1)");
ExpectTrue("s.has(globalThis)");
creator.SetDefaultContext(context);
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
CHECK(blob.CanBeRehashed());
}
i::FLAG_hash_seed = 1337;
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
create_params.snapshot_blob = &blob;
v8::Isolate* isolate = v8::Isolate::New(create_params);
{
// Check that rehashing has been performed.
CHECK_EQ(static_cast<uint64_t>(1337),
HashSeed(reinterpret_cast<i::Isolate*>(isolate)));
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
CHECK(!context.IsEmpty());
v8::Context::Scope context_scope(context);
ExpectInt32("m.get('b')", 2);
ExpectTrue("s.has(1)");
ExpectTrue("s.has(globalThis)");
}
isolate->Dispose();
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
UNINITIALIZED_TEST(ReinitializeHashSeedRehashable) {
DisableAlwaysOpt();
i::FLAG_rehash_snapshot = true;
i::FLAG_hash_seed = 42;
i::FLAG_allow_natives_syntax = true;
DisableEmbeddedBlobRefcounting();
v8::StartupData blob;
{
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
// Create dictionary mode object.
CompileRun(
"var a = new Array(10000);"
"%NormalizeElements(a);"
"a[133] = 1;"
"a[177] = 2;"
"a[971] = 3;"
"a[7997] = 4;"
"a[2111] = 5;"
"var o = {};"
"%OptimizeObjectForAddingMultipleProperties(o, 3);"
"o.a = 1;"
"o.b = 2;"
"o.c = 3;"
"var p = { foo: 1 };" // Test rehashing of transition arrays.
"p = JSON.parse('{\"foo\": {\"x\": 1}}');");
i::Handle<i::Object> i_a = v8::Utils::OpenHandle(*CompileRun("a"));
i::Handle<i::Object> i_o = v8::Utils::OpenHandle(*CompileRun("o"));
CHECK(i_a->IsJSArray());
CHECK(i_a->IsJSObject());
CHECK(!i::Handle<i::JSArray>::cast(i_a)->HasFastElements());
CHECK(!i::Handle<i::JSObject>::cast(i_o)->HasFastProperties());
ExpectInt32("a[2111]", 5);
ExpectInt32("o.c", 3);
creator.SetDefaultContext(context);
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
CHECK(blob.CanBeRehashed());
}
i::FLAG_hash_seed = 1337;
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
create_params.snapshot_blob = &blob;
v8::Isolate* isolate = v8::Isolate::New(create_params);
{
// Check that rehashing has been performed.
CHECK_EQ(static_cast<uint64_t>(1337),
HashSeed(reinterpret_cast<i::Isolate*>(isolate)));
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
CHECK(!context.IsEmpty());
v8::Context::Scope context_scope(context);
i::Handle<i::Object> i_a = v8::Utils::OpenHandle(*CompileRun("a"));
i::Handle<i::Object> i_o = v8::Utils::OpenHandle(*CompileRun("o"));
CHECK(i_a->IsJSArray());
CHECK(i_a->IsJSObject());
CHECK(!i::Handle<i::JSArray>::cast(i_a)->HasFastElements());
CHECK(!i::Handle<i::JSObject>::cast(i_o)->HasFastProperties());
ExpectInt32("a[2111]", 5);
ExpectInt32("o.c", 3);
}
isolate->Dispose();
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
void CheckSFIsAreWeak(WeakFixedArray sfis, Isolate* isolate) {
CHECK_GT(sfis.length(), 0);
int no_of_weak = 0;
for (int i = 0; i < sfis.length(); ++i) {
MaybeObject maybe_object = sfis.Get(i);
HeapObject heap_object;
CHECK(maybe_object->IsWeakOrCleared() ||
(maybe_object->GetHeapObjectIfStrong(&heap_object) &&
heap_object.IsUndefined(isolate)));
if (maybe_object->IsWeak()) {
++no_of_weak;
}
}
CHECK_GT(no_of_weak, 0);
}
UNINITIALIZED_TEST(WeakArraySerializationInSnapshot) {
const char* code = "var my_func = function() { }";
DisableAlwaysOpt();
DisableEmbeddedBlobRefcounting();
i::FLAG_allow_natives_syntax = true;
v8::StartupData blob;
{
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CompileRun(code);
creator.SetDefaultContext(
context, v8::SerializeInternalFieldsCallback(
SerializeInternalFields, reinterpret_cast<void*>(2016)));
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
v8::Isolate::CreateParams create_params;
create_params.snapshot_blob = &blob;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = TestSerializer::NewIsolate(create_params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(
isolate, nullptr, v8::MaybeLocal<v8::ObjectTemplate>(),
v8::MaybeLocal<v8::Value>(),
v8::DeserializeInternalFieldsCallback(DeserializeInternalFields,
reinterpret_cast<void*>(2017)));
v8::Context::Scope c_scope(context);
v8::Local<v8::Value> x = CompileRun("my_func");
CHECK(x->IsFunction());
Handle<JSFunction> function =
Handle<JSFunction>::cast(v8::Utils::OpenHandle(*x));
// Verify that the pointers in shared_function_infos are weak.
WeakFixedArray sfis =
Script::cast(function->shared().script()).shared_function_infos();
CheckSFIsAreWeak(sfis, reinterpret_cast<i::Isolate*>(isolate));
}
isolate->Dispose();
delete[] blob.data;
FreeCurrentEmbeddedBlob();
}
TEST(WeakArraySerializationInCodeCache) {
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()->DisableScriptAndEval();
v8::HandleScope scope(CcTest::isolate());
const char* source = "function foo() { }";
Handle<String> src = isolate->factory()
->NewStringFromUtf8(base::CStrVector(source))
.ToHandleChecked();
AlignedCachedData* cache = nullptr;
ScriptDetails script_details(src);
CompileScriptAndProduceCache(isolate, src, script_details, &cache,
v8::ScriptCompiler::kNoCompileOptions);
DisallowCompilation no_compile_expected(isolate);
Handle<SharedFunctionInfo> copy =
CompileScript(isolate, src, script_details, cache,
v8::ScriptCompiler::kConsumeCodeCache);
// Verify that the pointers in shared_function_infos are weak.
WeakFixedArray sfis = Script::cast(copy->script()).shared_function_infos();
CheckSFIsAreWeak(sfis, isolate);
delete cache;
}
TEST(CachedCompileFunctionInContext) {
DisableAlwaysOpt();
LocalContext env;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()
->DisableScriptAndEval(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::String> source = v8_str("return x*x;");
v8::Local<v8::String> arg_str = v8_str("x");
ScriptCompiler::CachedData* cache;
{
v8::ScriptCompiler::Source script_source(source);
v8::Local<v8::Function> fun =
v8::ScriptCompiler::CompileFunctionInContext(
env.local(), &script_source, 1, &arg_str, 0, nullptr,
v8::ScriptCompiler::kEagerCompile)
.ToLocalChecked();
cache = v8::ScriptCompiler::CreateCodeCacheForFunction(fun);
}
{
DisallowCompilation no_compile_expected(isolate);
v8::ScriptCompiler::Source script_source(source, cache);
v8::Local<v8::Function> fun =
v8::ScriptCompiler::CompileFunctionInContext(
env.local(), &script_source, 1, &arg_str, 0, nullptr,
v8::ScriptCompiler::kConsumeCodeCache)
.ToLocalChecked();
v8::Local<v8::Value> arg = v8_num(3);
v8::Local<v8::Value> result =
fun->Call(env.local(), v8::Undefined(CcTest::isolate()), 1, &arg)
.ToLocalChecked();
CHECK_EQ(9, result->Int32Value(env.local()).FromJust());
}
}
UNINITIALIZED_TEST(SnapshotCreatorAnonClassWithKeep) {
DisableAlwaysOpt();
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
{
v8::HandleScope handle_scope(isolate);
{
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CompileRun(
"function Foo() { return class {}; } \n"
"class Bar extends Foo() {}\n"
"Foo()\n");
creator.SetDefaultContext(context);
}
}
v8::StartupData blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kKeep);
delete[] blob.data;
}
class V8_NODISCARD DisableLazySourcePositionScope {
public:
DisableLazySourcePositionScope()
: backup_value_(FLAG_enable_lazy_source_positions) {
FLAG_enable_lazy_source_positions = false;
}
~DisableLazySourcePositionScope() {
FLAG_enable_lazy_source_positions = backup_value_;
}
private:
bool backup_value_;
};
UNINITIALIZED_TEST(NoStackFrameCacheSerialization) {
// Checks that exceptions caught are not cached in the
// stack frame cache during serialization. The individual frames
// can point to JSFunction objects, which need to be stored in a
// context snapshot, *not* isolate snapshot.
DisableAlwaysOpt();
DisableLazySourcePositionScope lazy_scope;
v8::SnapshotCreator creator;
v8::Isolate* isolate = creator.GetIsolate();
isolate->SetCaptureStackTraceForUncaughtExceptions(true);
{
v8::HandleScope handle_scope(isolate);
{
v8::Local<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
v8::TryCatch try_catch(isolate);
CompileRun(R"(
function foo() { throw new Error('bar'); }
function bar() {
foo();
}
bar();
)");
creator.SetDefaultContext(context);
}
}
v8::StartupData blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kKeep);
delete[] blob.data;
}
} // namespace internal
} // namespace v8
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