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node/deps/v8/test/cctest/test-serialize.cc

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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/v8.h"
#include "src/bootstrapper.h"
#include "src/compilation-cache.h"
#include "src/compiler.h"
#include "src/debug/debug.h"
#include "src/heap/spaces.h"
#include "src/macro-assembler.h"
#include "src/objects.h"
#include "src/runtime/runtime.h"
#include "src/snapshot/code-serializer.h"
#include "src/snapshot/deserializer.h"
#include "src/snapshot/natives.h"
#include "src/snapshot/partial-serializer.h"
#include "src/snapshot/snapshot.h"
#include "src/snapshot/startup-serializer.h"
#include "test/cctest/cctest.h"
#include "test/cctest/heap/heap-utils.h"
using namespace v8::internal;
void DisableTurbofan() {
const char* flag = "--turbo-filter=\"\"";
FlagList::SetFlagsFromString(flag, StrLength(flag));
}
// TestIsolate is used for testing isolate serialization.
class TestIsolate : public Isolate {
public:
static v8::Isolate* NewInitialized(bool enable_serializer) {
i::Isolate* isolate = new TestIsolate(enable_serializer);
v8::Isolate* v8_isolate = reinterpret_cast<v8::Isolate*>(isolate);
v8::Isolate::Scope isolate_scope(v8_isolate);
isolate->Init(NULL);
return v8_isolate;
}
explicit TestIsolate(bool enable_serializer) : Isolate(enable_serializer) {
set_array_buffer_allocator(CcTest::array_buffer_allocator());
}
};
static Vector<const byte> WritePayload(const Vector<const byte>& payload) {
int length = payload.length();
byte* blob = NewArray<byte>(length);
memcpy(blob, payload.begin(), length);
return Vector<const byte>(const_cast<const byte*>(blob), length);
}
static Vector<const byte> Serialize(v8::Isolate* isolate) {
// We have to create one context. One reason for this is so that the builtins
// can be loaded from v8natives.js 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);
StartupSerializer ser(internal_isolate,
v8::SnapshotCreator::FunctionCodeHandling::kClear);
ser.SerializeStrongReferences();
ser.SerializeWeakReferencesAndDeferred();
SnapshotData snapshot_data(&ser);
return WritePayload(snapshot_data.RawData());
}
Vector<const uint8_t> ConstructSource(Vector<const uint8_t> head,
Vector<const uint8_t> body,
Vector<const uint8_t> tail, int repeats) {
int source_length = head.length() + body.length() * repeats + tail.length();
uint8_t* source = NewArray<uint8_t>(static_cast<size_t>(source_length));
CopyChars(source, head.start(), head.length());
for (int i = 0; i < repeats; i++) {
CopyChars(source + head.length() + i * body.length(), body.start(),
body.length());
}
CopyChars(source + head.length() + repeats * body.length(), tail.start(),
tail.length());
return Vector<const uint8_t>(const_cast<const uint8_t*>(source),
source_length);
}
v8::Isolate* InitializeFromBlob(Vector<const byte> blob) {
v8::Isolate* v8_isolate = NULL;
{
SnapshotData snapshot_data(blob);
Deserializer deserializer(&snapshot_data);
Isolate* isolate = new TestIsolate(false);
v8_isolate = reinterpret_cast<v8::Isolate*>(isolate);
v8::Isolate::Scope isolate_scope(v8_isolate);
isolate->Init(&deserializer);
}
return v8_isolate;
}
static v8::Isolate* Deserialize(Vector<const byte> blob) {
v8::Isolate* isolate = InitializeFromBlob(blob);
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());
CHECK(isolate->heap()->string_table()->IsStringTable());
isolate->factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("Empty"));
}
UNINITIALIZED_TEST(StartupSerializerOnce) {
// The serialize-deserialize tests only work if the VM is built without
// serialization. That doesn't matter. We don't need to be able to
// serialize a snapshot in a VM that is booted from a snapshot.
DisableTurbofan();
v8::Isolate* isolate = TestIsolate::NewInitialized(true);
Vector<const byte> blob = Serialize(isolate);
isolate = Deserialize(blob);
blob.Dispose();
{
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();
}
UNINITIALIZED_TEST(StartupSerializerTwice) {
DisableTurbofan();
v8::Isolate* isolate = TestIsolate::NewInitialized(true);
Vector<const byte> blob1 = Serialize(isolate);
Vector<const byte> blob2 = Serialize(isolate);
blob1.Dispose();
isolate = Deserialize(blob2);
blob2.Dispose();
{
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();
}
UNINITIALIZED_TEST(StartupSerializerOnceRunScript) {
DisableTurbofan();
v8::Isolate* isolate = TestIsolate::NewInitialized(true);
Vector<const byte> blob = Serialize(isolate);
isolate = Deserialize(blob);
blob.Dispose();
{
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();
}
UNINITIALIZED_TEST(StartupSerializerTwiceRunScript) {
DisableTurbofan();
v8::Isolate* isolate = TestIsolate::NewInitialized(true);
Vector<const byte> blob1 = Serialize(isolate);
Vector<const byte> blob2 = Serialize(isolate);
blob1.Dispose();
isolate = Deserialize(blob2);
blob2.Dispose();
{
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();
}
static void PartiallySerializeObject(Vector<const byte>* startup_blob_out,
Vector<const byte>* partial_blob_out) {
v8::Isolate* v8_isolate = TestIsolate::NewInitialized(true);
Isolate* isolate = reinterpret_cast<Isolate*>(v8_isolate);
v8_isolate->Enter();
{
Heap* heap = isolate->heap();
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();
}
// Make sure all builtin scripts are cached.
{
HandleScope scope(isolate);
for (int i = 0; i < Natives::GetBuiltinsCount(); i++) {
isolate->bootstrapper()->SourceLookup<Natives>(i);
}
}
heap->CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask,
i::GarbageCollectionReason::kTesting);
heap->CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask,
i::GarbageCollectionReason::kTesting);
Object* raw_foo;
{
v8::HandleScope handle_scope(v8_isolate);
v8::Local<v8::String> foo = v8_str("foo");
CHECK(!foo.IsEmpty());
raw_foo = *(v8::Utils::OpenHandle(*foo));
}
{
v8::HandleScope handle_scope(v8_isolate);
v8::Local<v8::Context>::New(v8_isolate, env)->Exit();
}
env.Reset();
StartupSerializer startup_serializer(
isolate, v8::SnapshotCreator::FunctionCodeHandling::kClear);
startup_serializer.SerializeStrongReferences();
PartialSerializer partial_serializer(isolate, &startup_serializer);
partial_serializer.Serialize(&raw_foo);
startup_serializer.SerializeWeakReferencesAndDeferred();
SnapshotData startup_snapshot(&startup_serializer);
SnapshotData partial_snapshot(&partial_serializer);
*partial_blob_out = WritePayload(partial_snapshot.RawData());
*startup_blob_out = WritePayload(startup_snapshot.RawData());
}
v8_isolate->Exit();
v8_isolate->Dispose();
}
UNINITIALIZED_TEST(PartialSerializerObject) {
DisableTurbofan();
Vector<const byte> startup_blob;
Vector<const byte> partial_blob;
PartiallySerializeObject(&startup_blob, &partial_blob);
v8::Isolate* v8_isolate = InitializeFromBlob(startup_blob);
startup_blob.Dispose();
CHECK(v8_isolate);
{
v8::Isolate::Scope isolate_scope(v8_isolate);
Isolate* isolate = reinterpret_cast<Isolate*>(v8_isolate);
HandleScope handle_scope(isolate);
Handle<Object> root;
// Intentionally empty handle. The deserializer should not come across
// any references to the global proxy in this test.
Handle<JSGlobalProxy> global_proxy = Handle<JSGlobalProxy>::null();
{
SnapshotData snapshot_data(partial_blob);
Deserializer deserializer(&snapshot_data);
root = deserializer.DeserializePartial(isolate, global_proxy)
.ToHandleChecked();
CHECK(root->IsString());
}
Handle<Object> root2;
{
SnapshotData snapshot_data(partial_blob);
Deserializer deserializer(&snapshot_data);
root2 = deserializer.DeserializePartial(isolate, global_proxy)
.ToHandleChecked();
CHECK(root2->IsString());
CHECK(root.is_identical_to(root2));
}
partial_blob.Dispose();
}
v8_isolate->Dispose();
}
static void PartiallySerializeContext(Vector<const byte>* startup_blob_out,
Vector<const byte>* partial_blob_out) {
v8::Isolate* v8_isolate = TestIsolate::NewInitialized(true);
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();
}
// Make sure all builtin scripts are cached.
{
HandleScope scope(isolate);
for (int i = 0; i < Natives::GetBuiltinsCount(); i++) {
isolate->bootstrapper()->SourceLookup<Natives>(i);
}
}
// 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->CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask,
i::GarbageCollectionReason::kTesting);
{
v8::HandleScope handle_scope(v8_isolate);
v8::Local<v8::Context>::New(v8_isolate, env)->Exit();
}
i::Object* raw_context = *v8::Utils::OpenPersistent(env);
env.Reset();
SnapshotByteSink startup_sink;
StartupSerializer startup_serializer(
isolate, v8::SnapshotCreator::FunctionCodeHandling::kClear);
startup_serializer.SerializeStrongReferences();
SnapshotByteSink partial_sink;
PartialSerializer partial_serializer(isolate, &startup_serializer);
partial_serializer.Serialize(&raw_context);
startup_serializer.SerializeWeakReferencesAndDeferred();
SnapshotData startup_snapshot(&startup_serializer);
SnapshotData partial_snapshot(&partial_serializer);
*partial_blob_out = WritePayload(partial_snapshot.RawData());
*startup_blob_out = WritePayload(startup_snapshot.RawData());
}
v8_isolate->Dispose();
}
UNINITIALIZED_TEST(PartialSerializerContext) {
DisableTurbofan();
Vector<const byte> startup_blob;
Vector<const byte> partial_blob;
PartiallySerializeContext(&startup_blob, &partial_blob);
v8::Isolate* v8_isolate = InitializeFromBlob(startup_blob);
CHECK(v8_isolate);
startup_blob.Dispose();
{
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();
{
SnapshotData snapshot_data(partial_blob);
Deserializer deserializer(&snapshot_data);
root = deserializer.DeserializePartial(isolate, global_proxy)
.ToHandleChecked();
CHECK(root->IsContext());
CHECK(Handle<Context>::cast(root)->global_proxy() == *global_proxy);
}
Handle<Object> root2;
{
SnapshotData snapshot_data(partial_blob);
Deserializer deserializer(&snapshot_data);
root2 = deserializer.DeserializePartial(isolate, global_proxy)
.ToHandleChecked();
CHECK(root2->IsContext());
CHECK(!root.is_identical_to(root2));
}
partial_blob.Dispose();
}
v8_isolate->Dispose();
}
static void PartiallySerializeCustomContext(
Vector<const byte>* startup_blob_out,
Vector<const byte>* partial_blob_out) {
v8::Isolate* v8_isolate = TestIsolate::NewInitialized(true);
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');");
Vector<const uint8_t> source = ConstructSource(
STATIC_CHAR_VECTOR("function g() { return [,"),
STATIC_CHAR_VECTOR("1,"),
STATIC_CHAR_VECTOR("];} a = g(); b = g(); b.push(1);"), 100000);
v8::MaybeLocal<v8::String> source_str = v8::String::NewFromOneByte(
v8_isolate, source.start(), v8::NewStringType::kNormal,
source.length());
CompileRun(source_str.ToLocalChecked());
source.Dispose();
}
// Make sure all builtin scripts are cached.
{
HandleScope scope(isolate);
for (int i = 0; i < Natives::GetBuiltinsCount(); i++) {
isolate->bootstrapper()->SourceLookup<Natives>(i);
}
}
// 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();
}
i::Object* raw_context = *v8::Utils::OpenPersistent(env);
env.Reset();
SnapshotByteSink startup_sink;
StartupSerializer startup_serializer(
isolate, v8::SnapshotCreator::FunctionCodeHandling::kClear);
startup_serializer.SerializeStrongReferences();
SnapshotByteSink partial_sink;
PartialSerializer partial_serializer(isolate, &startup_serializer);
partial_serializer.Serialize(&raw_context);
startup_serializer.SerializeWeakReferencesAndDeferred();
SnapshotData startup_snapshot(&startup_serializer);
SnapshotData partial_snapshot(&partial_serializer);
*partial_blob_out = WritePayload(partial_snapshot.RawData());
*startup_blob_out = WritePayload(startup_snapshot.RawData());
}
v8_isolate->Dispose();
}
UNINITIALIZED_TEST(PartialSerializerCustomContext) {
DisableTurbofan();
Vector<const byte> startup_blob;
Vector<const byte> partial_blob;
PartiallySerializeCustomContext(&startup_blob, &partial_blob);
v8::Isolate* v8_isolate = InitializeFromBlob(startup_blob);
CHECK(v8_isolate);
startup_blob.Dispose();
{
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();
{
SnapshotData snapshot_data(partial_blob);
Deserializer deserializer(&snapshot_data);
root = deserializer.DeserializePartial(isolate, global_proxy)
.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());
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);
}
partial_blob.Dispose();
}
v8_isolate->Dispose();
}
TEST(CustomSnapshotDataBlob) {
DisableTurbofan();
const char* source1 = "function f() { return 42; }";
const char* source2 =
"function f() { return g() * 2; }"
"function g() { return 43; }"
"/./.test('a')";
v8::StartupData data1 = v8::V8::CreateSnapshotDataBlob(source1);
v8::StartupData data2 = v8::V8::CreateSnapshotDataBlob(source2);
v8::Isolate::CreateParams params1;
params1.snapshot_blob = &data1;
params1.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate1 = v8::Isolate::New(params1);
{
v8::Isolate::Scope i_scope(isolate1);
v8::HandleScope h_scope(isolate1);
v8::Local<v8::Context> context = v8::Context::New(isolate1);
delete[] data1.data; // We can dispose of the snapshot blob now.
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();
v8::Isolate::CreateParams params2;
params2.snapshot_blob = &data2;
params2.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate2 = v8::Isolate::New(params2);
{
v8::Isolate::Scope i_scope(isolate2);
v8::HandleScope h_scope(isolate2);
v8::Local<v8::Context> context = v8::Context::New(isolate2);
delete[] data2.data; // We can dispose of the snapshot blob now.
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();
}
static void SerializationFunctionTemplate(
const v8::FunctionCallbackInfo<v8::Value>& args) {
args.GetReturnValue().Set(args[0]);
}
TEST(CustomSnapshotDataBlobOutdatedContextWithOverflow) {
DisableTurbofan();
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)";
v8::StartupData data = v8::V8::CreateSnapshotDataBlob(source1);
v8::Isolate::CreateParams params;
params.snapshot_blob = &data;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(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, NULL, global);
delete[] data.data; // We can dispose of the snapshot blob now.
v8::Context::Scope c_scope(context);
v8::Local<v8::Value> result = CompileRun(source2);
v8::Maybe<bool> compare = v8_str("42")->Equals(
v8::Isolate::GetCurrent()->GetCurrentContext(), result);
CHECK(compare.FromJust());
}
isolate->Dispose();
}
TEST(CustomSnapshotDataBlobWithLocker) {
DisableTurbofan();
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; }";
v8::StartupData data1 = v8::V8::CreateSnapshotDataBlob(source1);
v8::Isolate::CreateParams params1;
params1.snapshot_blob = &data1;
params1.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate1 = v8::Isolate::New(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);
delete[] data1.data; // We can dispose of the snapshot blob now.
v8::Context::Scope c_scope(context);
v8::Maybe<int32_t> result = CompileRun("f()")->Int32Value(context);
CHECK_EQ(42, result.FromJust());
}
isolate1->Dispose();
}
TEST(CustomSnapshotDataBlobStackOverflow) {
DisableTurbofan();
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;"
"}";
v8::StartupData data = v8::V8::CreateSnapshotDataBlob(source);
v8::Isolate::CreateParams params;
params.snapshot_blob = &data;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
delete[] data.data; // We can dispose of the snapshot blob now.
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();
}
bool IsCompiled(const char* name) {
return i::Handle<i::JSFunction>::cast(
v8::Utils::OpenHandle(*CompileRun(name)))
->shared()
->is_compiled();
}
TEST(SnapshotDataBlobWithWarmup) {
DisableTurbofan();
const char* warmup = "Math.abs(1); Math.random = 1;";
v8::StartupData cold = v8::V8::CreateSnapshotDataBlob();
v8::StartupData warm = v8::V8::WarmUpSnapshotDataBlob(cold, warmup);
delete[] cold.data;
v8::Isolate::CreateParams params;
params.snapshot_blob = &warm;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
delete[] warm.data;
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("Number.parseInt"));
CHECK(CompileRun("Math.random")->IsFunction());
}
isolate->Dispose();
}
TEST(CustomSnapshotDataBlobWithWarmup) {
DisableTurbofan();
const char* source =
"function f() { return Math.abs(1); }\n"
"function g() { return Number.parseInt(1); }\n"
"Number.parseFloat(1);"
"var a = 5";
const char* warmup = "a = f()";
v8::StartupData cold = v8::V8::CreateSnapshotDataBlob(source);
v8::StartupData warm = v8::V8::WarmUpSnapshotDataBlob(cold, warmup);
delete[] cold.data;
v8::Isolate::CreateParams params;
params.snapshot_blob = &warm;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
delete[] warm.data;
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("Number.parseInt"));
CHECK(!IsCompiled("Number.parseFloat"));
CHECK_EQ(5, CompileRun("a")->Int32Value(context).FromJust());
}
isolate->Dispose();
}
TEST(CustomSnapshotDataBlobImmortalImmovableRoots) {
DisableTurbofan();
// 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.
Vector<const uint8_t> source =
ConstructSource(STATIC_CHAR_VECTOR("var a = [];"),
STATIC_CHAR_VECTOR("a.push(function() {return 7});"),
STATIC_CHAR_VECTOR("\0"), 10000);
v8::StartupData data = v8::V8::CreateSnapshotDataBlob(
reinterpret_cast<const char*>(source.start()));
v8::Isolate::CreateParams params;
params.snapshot_blob = &data;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
delete[] data.data; // We can dispose of the snapshot blob now.
v8::Context::Scope c_scope(context);
CHECK_EQ(7, CompileRun("a[0]()")->Int32Value(context).FromJust());
}
isolate->Dispose();
source.Dispose();
}
TEST(TestThatAlwaysSucceeds) {
}
TEST(TestThatAlwaysFails) {
bool ArtificialFailure = false;
CHECK(ArtificialFailure);
}
int CountBuiltins() {
// Check that we have not deserialized any additional builtin.
HeapIterator iterator(CcTest::heap());
DisallowHeapAllocation no_allocation;
int counter = 0;
for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) {
if (obj->IsCode() && Code::cast(obj)->kind() == Code::BUILTIN) counter++;
}
return counter;
}
static Handle<SharedFunctionInfo> CompileScript(
Isolate* isolate, Handle<String> source, Handle<String> name,
ScriptData** cached_data, v8::ScriptCompiler::CompileOptions options) {
return Compiler::GetSharedFunctionInfoForScript(
source, name, 0, 0, v8::ScriptOriginOptions(), Handle<Object>(),
Handle<Context>(isolate->native_context()), NULL, cached_data, options,
NOT_NATIVES_CODE, false);
}
TEST(CodeSerializerOnePlusOne) {
FLAG_serialize_toplevel = true;
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()->Disable(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
const char* source = "1 + 1";
Handle<String> orig_source = isolate->factory()
->NewStringFromUtf8(CStrVector(source))
.ToHandleChecked();
Handle<String> copy_source = isolate->factory()
->NewStringFromUtf8(CStrVector(source))
.ToHandleChecked();
CHECK(!orig_source.is_identical_to(copy_source));
CHECK(orig_source->Equals(*copy_source));
ScriptData* cache = NULL;
Handle<SharedFunctionInfo> orig =
CompileScript(isolate, orig_source, Handle<String>(), &cache,
v8::ScriptCompiler::kProduceCodeCache);
int builtins_count = CountBuiltins();
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, copy_source, Handle<String>(), &cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
CHECK(Script::cast(copy->script())->source() == *copy_source);
Handle<JSFunction> copy_fun =
isolate->factory()->NewFunctionFromSharedFunctionInfo(
copy, isolate->native_context());
Handle<JSObject> global(isolate->context()->global_object());
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, NULL).ToHandleChecked();
CHECK_EQ(2, Handle<Smi>::cast(copy_result)->value());
CHECK_EQ(builtins_count, CountBuiltins());
delete cache;
}
TEST(CodeSerializerPromotedToCompilationCache) {
FLAG_serialize_toplevel = true;
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
v8::HandleScope scope(CcTest::isolate());
const char* source = "1 + 1";
Handle<String> src = isolate->factory()
->NewStringFromUtf8(CStrVector(source))
.ToHandleChecked();
ScriptData* cache = NULL;
CompileScript(isolate, src, src, &cache,
v8::ScriptCompiler::kProduceCodeCache);
DisallowCompilation no_compile_expected(isolate);
Handle<SharedFunctionInfo> copy = CompileScript(
isolate, src, src, &cache, v8::ScriptCompiler::kConsumeCodeCache);
CHECK(isolate->compilation_cache()
->LookupScript(src, src, 0, 0, v8::ScriptOriginOptions(),
isolate->native_context(), SLOPPY)
.ToHandleChecked()
.is_identical_to(copy));
delete cache;
}
TEST(CodeSerializerInternalizedString) {
FLAG_serialize_toplevel = true;
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()->Disable(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
const char* source = "'string1'";
Handle<String> orig_source = isolate->factory()
->NewStringFromUtf8(CStrVector(source))
.ToHandleChecked();
Handle<String> copy_source = isolate->factory()
->NewStringFromUtf8(CStrVector(source))
.ToHandleChecked();
CHECK(!orig_source.is_identical_to(copy_source));
CHECK(orig_source->Equals(*copy_source));
Handle<JSObject> global(isolate->context()->global_object());
ScriptData* cache = NULL;
Handle<SharedFunctionInfo> orig =
CompileScript(isolate, orig_source, Handle<String>(), &cache,
v8::ScriptCompiler::kProduceCodeCache);
Handle<JSFunction> orig_fun =
isolate->factory()->NewFunctionFromSharedFunctionInfo(
orig, isolate->native_context());
Handle<Object> orig_result =
Execution::Call(isolate, orig_fun, global, 0, NULL).ToHandleChecked();
CHECK(orig_result->IsInternalizedString());
int builtins_count = CountBuiltins();
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, copy_source, Handle<String>(), &cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
CHECK(Script::cast(copy->script())->source() == *copy_source);
Handle<JSFunction> copy_fun =
isolate->factory()->NewFunctionFromSharedFunctionInfo(
copy, isolate->native_context());
CHECK_NE(*orig_fun, *copy_fun);
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, NULL).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 cache;
}
TEST(CodeSerializerLargeCodeObject) {
FLAG_serialize_toplevel = true;
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()->Disable(); // 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;
Vector<const uint8_t> source =
ConstructSource(STATIC_CHAR_VECTOR("var j=1; if (!j) {"),
STATIC_CHAR_VECTOR("for (let i of Object.prototype);"),
STATIC_CHAR_VECTOR("} j=7; j"), 2000);
Handle<String> source_str =
isolate->factory()->NewStringFromOneByte(source).ToHandleChecked();
Handle<JSObject> global(isolate->context()->global_object());
ScriptData* cache = NULL;
Handle<SharedFunctionInfo> orig =
CompileScript(isolate, source_str, Handle<String>(), &cache,
v8::ScriptCompiler::kProduceCodeCache);
CHECK(isolate->heap()->InSpace(orig->abstract_code(), LO_SPACE));
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, source_str, Handle<String>(), &cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
Handle<JSFunction> copy_fun =
isolate->factory()->NewFunctionFromSharedFunctionInfo(
copy, isolate->native_context());
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, NULL).ToHandleChecked();
int result_int;
CHECK(copy_result->ToInt32(&result_int));
CHECK_EQ(7, result_int);
delete cache;
source.Dispose();
}
TEST(CodeSerializerLargeStrings) {
FLAG_serialize_toplevel = true;
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
Factory* f = isolate->factory();
isolate->compilation_cache()->Disable(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
Vector<const uint8_t> source_s = ConstructSource(
STATIC_CHAR_VECTOR("var s = \""), STATIC_CHAR_VECTOR("abcdef"),
STATIC_CHAR_VECTOR("\";"), 1000000);
Vector<const uint8_t> source_t = ConstructSource(
STATIC_CHAR_VECTOR("var t = \""), STATIC_CHAR_VECTOR("uvwxyz"),
STATIC_CHAR_VECTOR("\"; s + t"), 999999);
Handle<String> source_str =
f->NewConsString(f->NewStringFromOneByte(source_s).ToHandleChecked(),
f->NewStringFromOneByte(source_t).ToHandleChecked())
.ToHandleChecked();
Handle<JSObject> global(isolate->context()->global_object());
ScriptData* cache = NULL;
Handle<SharedFunctionInfo> orig =
CompileScript(isolate, source_str, Handle<String>(), &cache,
v8::ScriptCompiler::kProduceCodeCache);
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, source_str, Handle<String>(), &cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
Handle<JSFunction> copy_fun =
isolate->factory()->NewFunctionFromSharedFunctionInfo(
copy, isolate->native_context());
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, NULL).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) {
FLAG_serialize_toplevel = true;
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
Factory* f = isolate->factory();
isolate->compilation_cache()->Disable(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
Vector<const uint8_t> source_a =
ConstructSource(STATIC_CHAR_VECTOR("var a = \""), STATIC_CHAR_VECTOR("a"),
STATIC_CHAR_VECTOR("\";"), 700000);
Handle<String> source_a_str =
f->NewStringFromOneByte(source_a).ToHandleChecked();
Vector<const uint8_t> source_b =
ConstructSource(STATIC_CHAR_VECTOR("var b = \""), STATIC_CHAR_VECTOR("b"),
STATIC_CHAR_VECTOR("\";"), 400000);
Handle<String> source_b_str =
f->NewStringFromOneByte(source_b).ToHandleChecked();
Vector<const uint8_t> source_c =
ConstructSource(STATIC_CHAR_VECTOR("var c = \""), STATIC_CHAR_VECTOR("c"),
STATIC_CHAR_VECTOR("\";"), 400000);
Handle<String> source_c_str =
f->NewStringFromOneByte(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());
ScriptData* cache = NULL;
Handle<SharedFunctionInfo> orig =
CompileScript(isolate, source_str, Handle<String>(), &cache,
v8::ScriptCompiler::kProduceCodeCache);
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, source_str, Handle<String>(), &cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
Handle<JSFunction> copy_fun =
isolate->factory()->NewFunctionFromSharedFunctionInfo(
copy, isolate->native_context());
USE(Execution::Call(isolate, copy_fun, global, 0, NULL));
v8::Maybe<int32_t> result =
CompileRun("(a + b).length")
->Int32Value(v8::Isolate::GetCurrent()->GetCurrentContext());
CHECK_EQ(400000 + 700000, result.FromJust());
result = CompileRun("(b + c).length")
->Int32Value(v8::Isolate::GetCurrent()->GetCurrentContext());
CHECK_EQ(400000 + 400000, 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) {}
virtual const char* data() const { return data_; }
virtual size_t length() const { return length_; }
private:
const char* data_;
size_t length_;
};
class SerializerTwoByteResource : public v8::String::ExternalStringResource {
public:
SerializerTwoByteResource(const char* data, size_t length)
: data_(AsciiToTwoByteString(data)), length_(length) {}
~SerializerTwoByteResource() { DeleteArray<const uint16_t>(data_); }
virtual const uint16_t* data() const { return data_; }
virtual size_t length() const { return length_; }
private:
const uint16_t* data_;
size_t length_;
};
TEST(CodeSerializerExternalString) {
FLAG_serialize_toplevel = true;
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()->Disable(); // 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(CStrVector(source))
.ToHandleChecked();
Handle<JSObject> global(isolate->context()->global_object());
ScriptData* cache = NULL;
Handle<SharedFunctionInfo> orig =
CompileScript(isolate, source_string, Handle<String>(), &cache,
v8::ScriptCompiler::kProduceCodeCache);
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, source_string, Handle<String>(), &cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
Handle<JSFunction> copy_fun =
isolate->factory()->NewFunctionFromSharedFunctionInfo(
copy, isolate->native_context());
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, NULL).ToHandleChecked();
CHECK_EQ(15.0, copy_result->Number());
delete cache;
}
TEST(CodeSerializerLargeExternalString) {
FLAG_serialize_toplevel = true;
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()->Disable(); // 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.
Vector<const uint8_t> string =
ConstructSource(STATIC_CHAR_VECTOR(""), STATIC_CHAR_VECTOR("abcdef"),
STATIC_CHAR_VECTOR(""), 999999);
Handle<String> name = f->NewStringFromOneByte(string).ToHandleChecked();
SerializerOneByteResource one_byte_resource(
reinterpret_cast<const char*>(string.start()), 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());
ScriptData* cache = NULL;
Handle<SharedFunctionInfo> orig =
CompileScript(isolate, source_str, Handle<String>(), &cache,
v8::ScriptCompiler::kProduceCodeCache);
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, source_str, Handle<String>(), &cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
Handle<JSFunction> copy_fun =
f->NewFunctionFromSharedFunctionInfo(copy, isolate->native_context());
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, NULL).ToHandleChecked();
CHECK_EQ(42.0, copy_result->Number());
delete cache;
string.Dispose();
}
TEST(CodeSerializerExternalScriptName) {
FLAG_serialize_toplevel = true;
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()->Disable(); // 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(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());
ScriptData* cache = NULL;
Handle<SharedFunctionInfo> orig =
CompileScript(isolate, source_string, name, &cache,
v8::ScriptCompiler::kProduceCodeCache);
Handle<SharedFunctionInfo> copy;
{
DisallowCompilation no_compile_expected(isolate);
copy = CompileScript(isolate, source_string, name, &cache,
v8::ScriptCompiler::kConsumeCodeCache);
}
CHECK_NE(*orig, *copy);
Handle<JSFunction> copy_fun =
f->NewFunctionFromSharedFunctionInfo(copy, isolate->native_context());
Handle<Object> copy_result =
Execution::Call(isolate, copy_fun, global, 0, NULL).ToHandleChecked();
CHECK_EQ(10.0, copy_result->Number());
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", 12) == 0) {
toplevel_test_code_event_found = true;
}
}
v8::ScriptCompiler::CachedData* ProduceCache(const char* source) {
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(v8_str("test"));
v8::ScriptCompiler::Source source(source_str, origin);
v8::Local<v8::UnboundScript> script =
v8::ScriptCompiler::CompileUnboundScript(
isolate1, &source, v8::ScriptCompiler::kProduceCodeCache)
.ToLocalChecked();
const v8::ScriptCompiler::CachedData* data = source.GetCachedData();
CHECK(data);
// Persist cached data.
uint8_t* buffer = NewArray<uint8_t>(data->length);
MemCopy(buffer, data->data, data->length);
cache = new v8::ScriptCompiler::CachedData(
buffer, data->length, v8::ScriptCompiler::CachedData::BufferOwned);
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());
}
isolate1->Dispose();
return cache;
}
TEST(CodeSerializerIsolates) {
FLAG_serialize_toplevel = true;
const char* source = "function f() { return 'abc'; }; f() + 'def'";
v8::ScriptCompiler::CachedData* cache = ProduceCache(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(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(CodeSerializerFlagChange) {
FLAG_serialize_toplevel = true;
const char* source = "function f() { return 'abc'; }; f() + 'def'";
v8::ScriptCompiler::CachedData* cache = ProduceCache(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(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) {
FLAG_serialize_toplevel = true;
const char* source = "function f() { return 'abc'; }; f() + 'def'";
v8::ScriptCompiler::CachedData* cache = ProduceCache(source);
// Random bit flip.
const_cast<uint8_t*>(cache->data)[337] ^= 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(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) {
FLAG_serialize_toplevel = true;
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(v8_str("test"));
v8::ScriptCompiler::Source source(source_str, origin);
v8::Local<v8::UnboundScript> script =
v8::ScriptCompiler::CompileUnboundScript(
isolate1, &source, v8::ScriptCompiler::kProduceCodeCache)
.ToLocalChecked();
const v8::ScriptCompiler::CachedData* data = source.GetCachedData();
CHECK(data);
// Persist cached data.
uint8_t* buffer = NewArray<uint8_t>(data->length);
MemCopy(buffer, data->data, data->length);
cache = new v8::ScriptCompiler::CachedData(
buffer, data->length, v8::ScriptCompiler::CachedData::BufferOwned);
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(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(CodeSerializerInternalReference) {
#if V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_ARM64
return;
#endif
// In ignition there are only relative jumps, so the following code
// would not have any internal references. This test is not relevant
// for ignition.
if (FLAG_ignition) {
return;
}
// Disable experimental natives that are loaded after deserialization.
FLAG_function_context_specialization = false;
FLAG_always_opt = true;
const char* flag = "--turbo-filter=foo";
FlagList::SetFlagsFromString(flag, StrLength(flag));
const char* source =
"var foo = (function(stdlib, foreign, heap) {"
" function foo(i) {"
" i = i|0;"
" var j = 0;"
" switch (i) {"
" case 0:"
" case 1: j = 1; break;"
" case 2:"
" case 3: j = 2; break;"
" case 4:"
" case 5: j = foo(3) + 1; break;"
" default: j = 0; break;"
" }"
" return j + 10;"
" }"
" return { foo: foo };"
"})(this, {}, undefined).foo;"
"foo(1);";
v8::StartupData data = v8::V8::CreateSnapshotDataBlob(source);
CHECK(data.data);
v8::Isolate::CreateParams params;
params.snapshot_blob = &data;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(params);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope h_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
delete[] data.data; // We can dispose of the snapshot blob now.
v8::Context::Scope c_scope(context);
v8::Local<v8::Function> foo =
v8::Local<v8::Function>::Cast(CompileRun("foo"));
// There are at least 6 internal references.
int mask = RelocInfo::ModeMask(RelocInfo::INTERNAL_REFERENCE) |
RelocInfo::ModeMask(RelocInfo::INTERNAL_REFERENCE_ENCODED);
RelocIterator it(
Handle<JSFunction>::cast(v8::Utils::OpenHandle(*foo))->code(), mask);
for (int i = 0; i < 6; ++i) {
CHECK(!it.done());
it.next();
}
CHECK(Handle<JSFunction>::cast(v8::Utils::OpenHandle(*foo))
->code()
->is_turbofanned());
CHECK_EQ(11, CompileRun("foo(0)")
->Int32Value(isolate->GetCurrentContext())
.FromJust());
CHECK_EQ(11, CompileRun("foo(1)")
->Int32Value(isolate->GetCurrentContext())
.FromJust());
CHECK_EQ(12, CompileRun("foo(2)")
->Int32Value(isolate->GetCurrentContext())
.FromJust());
CHECK_EQ(12, CompileRun("foo(3)")
->Int32Value(isolate->GetCurrentContext())
.FromJust());
CHECK_EQ(23, CompileRun("foo(4)")
->Int32Value(isolate->GetCurrentContext())
.FromJust());
CHECK_EQ(23, CompileRun("foo(5)")
->Int32Value(isolate->GetCurrentContext())
.FromJust());
CHECK_EQ(10, CompileRun("foo(6)")
->Int32Value(isolate->GetCurrentContext())
.FromJust());
}
isolate->Dispose();
}
TEST(CodeSerializerEagerCompilationAndPreAge) {
if (FLAG_ignition) return;
FLAG_lazy = true;
FLAG_serialize_toplevel = true;
FLAG_serialize_age_code = true;
FLAG_serialize_eager = true;
FLAG_min_preparse_length = 1;
static const char* source =
"function f() {"
" function g() {"
" return 1;"
" }"
" return g();"
"}"
"'abcdef';";
v8::ScriptCompiler::CachedData* cache = ProduceCache(source);
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(v8_str("test"));
v8::ScriptCompiler::Source source(source_str, origin, cache);
v8::Local<v8::UnboundScript> unbound =
v8::ScriptCompiler::CompileUnboundScript(
isolate2, &source, v8::ScriptCompiler::kConsumeCodeCache)
.ToLocalChecked();
CHECK(!cache->rejected);
Isolate* i_isolate = reinterpret_cast<Isolate*>(isolate2);
HandleScope i_scope(i_isolate);
Handle<SharedFunctionInfo> toplevel = v8::Utils::OpenHandle(*unbound);
Handle<Script> script(Script::cast(toplevel->script()));
WeakFixedArray::Iterator iterator(script->shared_function_infos());
// Every function has been pre-compiled from the code cache.
int count = 0;
while (SharedFunctionInfo* shared = iterator.Next<SharedFunctionInfo>()) {
CHECK(shared->is_compiled());
CHECK_EQ(Code::kPreAgedCodeAge, shared->code()->GetAge());
count++;
}
CHECK_EQ(3, count);
}
isolate2->Dispose();
}
TEST(Regress503552) {
// 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() {}");
ScriptData* script_data = NULL;
Handle<SharedFunctionInfo> shared = Compiler::GetSharedFunctionInfoForScript(
source, Handle<String>(), 0, 0, v8::ScriptOriginOptions(),
Handle<Object>(), Handle<Context>(isolate->native_context()), NULL,
&script_data, v8::ScriptCompiler::kProduceCodeCache, NOT_NATIVES_CODE,
false);
delete script_data;
heap::SimulateIncrementalMarking(isolate->heap());
script_data = CodeSerializer::Serialize(isolate, shared, source);
delete script_data;
}
#if V8_TARGET_ARCH_X64
TEST(CodeSerializerCell) {
FLAG_serialize_toplevel = true;
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()->Disable(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
size_t actual_size;
byte* buffer = static_cast<byte*>(v8::base::OS::Allocate(
Assembler::kMinimalBufferSize, &actual_size, true));
CHECK(buffer);
HandleScope handles(isolate);
MacroAssembler assembler(isolate, buffer, static_cast<int>(actual_size),
v8::internal::CodeObjectRequired::kYes);
assembler.enable_serializer();
Handle<HeapNumber> number = isolate->factory()->NewHeapNumber(0.3);
CHECK(isolate->heap()->InNewSpace(*number));
Handle<Code> code;
{
MacroAssembler* masm = &assembler;
Handle<Cell> cell = isolate->factory()->NewCell(number);
masm->Move(rax, cell, RelocInfo::CELL);
masm->movp(rax, Operand(rax, 0));
masm->ret(0);
CodeDesc desc;
masm->GetCode(&desc);
code = isolate->factory()->NewCode(desc, Code::ComputeFlags(Code::FUNCTION),
masm->CodeObject());
code->set_has_reloc_info_for_serialization(true);
}
RelocIterator rit1(*code, 1 << RelocInfo::CELL);
CHECK_EQ(*number, rit1.rinfo()->target_cell()->value());
Handle<String> source = isolate->factory()->empty_string();
Handle<SharedFunctionInfo> sfi =
isolate->factory()->NewSharedFunctionInfo(source, code, false);
ScriptData* script_data = CodeSerializer::Serialize(isolate, sfi, source);
Handle<SharedFunctionInfo> copy =
CodeSerializer::Deserialize(isolate, script_data, source)
.ToHandleChecked();
RelocIterator rit2(copy->code(), 1 << RelocInfo::CELL);
CHECK(rit2.rinfo()->target_cell()->IsCell());
Handle<Cell> cell(rit2.rinfo()->target_cell());
CHECK(cell->value()->IsHeapNumber());
CHECK_EQ(0.3, HeapNumber::cast(cell->value())->value());
delete script_data;
}
#endif // V8_TARGET_ARCH_X64
TEST(CodeSerializerEmbeddedObject) {
FLAG_serialize_toplevel = true;
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
isolate->compilation_cache()->Disable(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
size_t actual_size;
byte* buffer = static_cast<byte*>(v8::base::OS::Allocate(
Assembler::kMinimalBufferSize, &actual_size, true));
CHECK(buffer);
HandleScope handles(isolate);
MacroAssembler assembler(isolate, buffer, static_cast<int>(actual_size),
v8::internal::CodeObjectRequired::kYes);
assembler.enable_serializer();
Handle<Object> number = isolate->factory()->NewHeapNumber(0.3);
CHECK(isolate->heap()->InNewSpace(*number));
Handle<Code> code;
{
MacroAssembler* masm = &assembler;
masm->Push(number);
CodeDesc desc;
masm->GetCode(&desc);
code = isolate->factory()->NewCode(desc, Code::ComputeFlags(Code::FUNCTION),
masm->CodeObject());
code->set_has_reloc_info_for_serialization(true);
}
RelocIterator rit1(*code, RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT));
CHECK_EQ(*number, rit1.rinfo()->target_object());
Handle<String> source = isolate->factory()->empty_string();
Handle<SharedFunctionInfo> sfi =
isolate->factory()->NewSharedFunctionInfo(source, code, false);
ScriptData* script_data = CodeSerializer::Serialize(isolate, sfi, source);
Handle<SharedFunctionInfo> copy =
CodeSerializer::Deserialize(isolate, script_data, source)
.ToHandleChecked();
RelocIterator rit2(copy->code(),
RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT));
CHECK(rit2.rinfo()->target_object()->IsHeapNumber());
CHECK_EQ(0.3, HeapNumber::cast(rit2.rinfo()->target_object())->value());
CcTest::CollectAllAvailableGarbage();
RelocIterator rit3(copy->code(),
RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT));
CHECK(rit3.rinfo()->target_object()->IsHeapNumber());
CHECK_EQ(0.3, HeapNumber::cast(rit3.rinfo()->target_object())->value());
delete script_data;
}
TEST(SnapshotCreatorMultipleContexts) {
DisableTurbofan();
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; }");
CHECK_EQ(0, creator.AddContext(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(1, creator.AddContext(context));
}
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate);
CHECK_EQ(2, 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();
v8::Isolate* isolate = v8::Isolate::New(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()", 1);
}
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context =
v8::Context::FromSnapshot(isolate, 1).ToLocalChecked();
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 2);
}
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context =
v8::Context::FromSnapshot(isolate, 2).ToLocalChecked();
v8::Context::Scope context_scope(context);
ExpectUndefined("this.f");
}
}
isolate->Dispose();
delete[] blob.data;
}
static void SerializedCallback(
const v8::FunctionCallbackInfo<v8::Value>& args) {
args.GetReturnValue().Set(v8_num(42));
}
static void SerializedCallbackReplacement(
const v8::FunctionCallbackInfo<v8::Value>& args) {
args.GetReturnValue().Set(v8_num(1337));
}
intptr_t original_external_references[] = {
reinterpret_cast<intptr_t>(SerializedCallback), 0};
intptr_t replaced_external_references[] = {
reinterpret_cast<intptr_t>(SerializedCallbackReplacement), 0};
TEST(SnapshotCreatorExternalReferences) {
DisableTurbofan();
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);
CHECK_EQ(0, creator.AddContext(context));
}
blob =
creator.CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
}
// 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;
v8::Isolate* isolate = v8::Isolate::New(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();
}
// Deserialize with the 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;
v8::Isolate* isolate = v8::Isolate::New(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()", 1337);
}
isolate->Dispose();
}
delete[] blob.data;
}
TEST(SnapshotCreatorTemplates) {
DisableTurbofan();
v8::StartupData blob;
{
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::FunctionTemplate> callback =
v8::FunctionTemplate::New(isolate, SerializedCallback);
global_template->Set(v8_str("f"), callback);
v8::Local<v8::Context> context =
v8::Context::New(isolate, no_extension, global_template);
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 42);
CHECK_EQ(0, creator.AddContext(context));
CHECK_EQ(0, creator.AddTemplate(callback));
CHECK_EQ(1, creator.AddTemplate(global_template));
}
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;
v8::Isolate* isolate = v8::Isolate::New(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).ToLocalChecked();
v8::Context::Scope context_scope(context);
ExpectInt32("f()", 42);
// Retrieve the snapshotted object template.
v8::Local<v8::ObjectTemplate> obj_template =
v8::ObjectTemplate::FromSnapshot(isolate, 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 that it instantiates to the same prototype.
ExpectTrue("o.f.prototype === f.prototype");
// Retrieve the snapshotted function template.
v8::Local<v8::FunctionTemplate> fun_template =
v8::FunctionTemplate::FromSnapshot(isolate, 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");
// Accessing out of bound returns empty MaybeHandle.
CHECK(v8::ObjectTemplate::FromSnapshot(isolate, 2).IsEmpty());
CHECK(v8::FunctionTemplate::FromSnapshot(isolate, 2).IsEmpty());
CHECK(v8::Context::FromSnapshot(isolate, 2).IsEmpty());
}
{
// Create a context with a new object template. It is merged into the
// deserialized global object.
v8::HandleScope handle_scope(isolate);
v8::ExtensionConfiguration* no_extension = nullptr;
v8::Local<v8::ObjectTemplate> global_template =
v8::ObjectTemplate::New(isolate);
global_template->Set(
v8_str("g"),
v8::FunctionTemplate::New(isolate, SerializedCallbackReplacement));
v8::Local<v8::Context> context =
v8::Context::FromSnapshot(isolate, 0, no_extension, global_template)
.ToLocalChecked();
v8::Context::Scope context_scope(context);
ExpectInt32("g()", 1337);
ExpectInt32("f()", 42);
}
}
isolate->Dispose();
}
delete[] blob.data;
}
TEST(SerializationMemoryStats) {
FLAG_profile_deserialization = true;
FLAG_always_opt = false;
v8::StartupData blob = v8::V8::CreateSnapshotDataBlob();
delete[] blob.data;
}