blob: e842538e2bfbb5a510dd3a1d053b4ea2cc308c55 [file] [log] [blame]
// 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/init/v8.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/debug/debug.h"
#include "src/heap/heap-inl.h"
#include "src/heap/read-only-heap.h"
#include "src/heap/spaces.h"
#include "src/init/bootstrapper.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/natives.h"
#include "src/snapshot/partial-deserializer.h"
#include "src/snapshot/partial-serializer.h"
#include "src/snapshot/read-only-deserializer.h"
#include "src/snapshot/read-only-serializer.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 {
Vector<const byte> startup;
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);
return v8_isolate;
}
static v8::Isolate* NewIsolateFromBlob(StartupBlobs& blobs) {
SnapshotData startup_snapshot(blobs.startup);
SnapshotData read_only_snapshot(blobs.read_only);
ReadOnlyDeserializer read_only_deserializer(&read_only_snapshot);
StartupDeserializer startup_deserializer(&startup_snapshot);
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(&read_only_deserializer, &startup_deserializer);
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 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);
}
namespace {
// Convenience wrapper around the convenience wrapper.
v8::StartupData CreateSnapshotDataBlob(const char* embedded_source) {
return CreateSnapshotDataBlobInternal(
v8::SnapshotCreator::FunctionCodeHandling::kClear, embedded_source);
}
} // 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);
ReadOnlySerializer read_only_serializer(internal_isolate);
read_only_serializer.SerializeReadOnlyRoots();
StartupSerializer ser(internal_isolate, &read_only_serializer);
ser.SerializeStrongReferences();
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())};
}
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.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 Vector<const uint8_t>(const_cast<const uint8_t*>(source),
source_length);
}
static v8::Isolate* Deserialize(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(StaticCharVector("Empty"));
}
void TestStartupSerializerOnceImpl() {
v8::Isolate* isolate = TestSerializer::NewIsolateInitialized();
StartupBlobs blobs = Serialize(isolate);
isolate->Dispose();
ReadOnlyHeap::ClearSharedHeapForTest();
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(StartupSerializerOnce1) {
DisableAlwaysOpt();
FLAG_serialization_chunk_size = 1;
TestStartupSerializerOnceImpl();
}
UNINITIALIZED_TEST(StartupSerializerOnce32) {
DisableAlwaysOpt();
FLAG_serialization_chunk_size = 32;
TestStartupSerializerOnceImpl();
}
UNINITIALIZED_TEST(StartupSerializerOnce1K) {
DisableAlwaysOpt();
FLAG_serialization_chunk_size = 1 * KB;
TestStartupSerializerOnceImpl();
}
UNINITIALIZED_TEST(StartupSerializerOnce4K) {
DisableAlwaysOpt();
FLAG_serialization_chunk_size = 4 * KB;
TestStartupSerializerOnceImpl();
}
UNINITIALIZED_TEST(StartupSerializerOnce32K) {
DisableAlwaysOpt();
FLAG_serialization_chunk_size = 32 * KB;
TestStartupSerializerOnceImpl();
}
UNINITIALIZED_TEST(StartupSerializerRootMapDependencies) {
DisableAlwaysOpt();
v8::SnapshotCreator snapshot_creator;
v8::Isolate* isolate = snapshot_creator.GetIsolate();
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
Isolate* internal_isolate = reinterpret_cast<Isolate*>(isolate);
// Here is interesting retaining path:
// - FreeSpaceMap
// - Map for Map types itself
// - NullValue
// - Internalized one byte string
// - Map for Internalized one byte string
// - TheHoleValue
// - HeapNumber
// HeapNumber objects require kDoubleUnaligned on 32-bit
// platforms. So, without special measures we're risking to serialize
// object, requiring alignment before FreeSpaceMap is fully serialized.
v8::internal::Handle<Map> map(
ReadOnlyRoots(internal_isolate).one_byte_internalized_string_map(),
internal_isolate);
// Need to avoid DCHECKs inside SnapshotCreator.
snapshot_creator.SetDefaultContext(v8::Context::New(isolate));
}
v8::StartupData startup_data = snapshot_creator.CreateBlob(
v8::SnapshotCreator::FunctionCodeHandling::kKeep);
v8::Isolate::CreateParams params;
params.snapshot_blob = &startup_data;
params.array_buffer_allocator = CcTest::array_buffer_allocator();
isolate = v8::Isolate::New(params);
{
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();
delete[] startup_data.data;
}
UNINITIALIZED_TEST(StartupSerializerTwice) {
DisableAlwaysOpt();
v8::Isolate* isolate = TestSerializer::NewIsolateInitialized();
StartupBlobs blobs1 = Serialize(isolate);
StartupBlobs blobs2 = Serialize(isolate);
isolate->Dispose();
blobs1.Dispose();
ReadOnlyHeap::ClearSharedHeapForTest();
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();
ReadOnlyHeap::ClearSharedHeapForTest();
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();
ReadOnlyHeap::ClearSharedHeapForTest();
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 PartiallySerializeContext(Vector<const byte>* startup_blob_out,
Vector<const byte>* read_only_blob_out,
Vector<const byte>* partial_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();
}
i::Context raw_context = i::Context::cast(*v8::Utils::OpenPersistent(env));
env.Reset();
SnapshotByteSink read_only_sink;
ReadOnlySerializer read_only_serializer(isolate);
read_only_serializer.SerializeReadOnlyRoots();
SnapshotByteSink startup_sink;
StartupSerializer startup_serializer(isolate, &read_only_serializer);
startup_serializer.SerializeStrongReferences();
SnapshotByteSink partial_sink;
PartialSerializer partial_serializer(isolate, &startup_serializer,
v8::SerializeInternalFieldsCallback());
partial_serializer.Serialize(&raw_context, false);
startup_serializer.SerializeWeakReferencesAndDeferred();
read_only_serializer.FinalizeSerialization();
SnapshotData read_only_snapshot(&read_only_serializer);
SnapshotData startup_snapshot(&startup_serializer);
SnapshotData partial_snapshot(&partial_serializer);
*partial_blob_out = WritePayload(partial_snapshot.RawData());
*startup_blob_out = WritePayload(startup_snapshot.RawData());
*read_only_blob_out = WritePayload(read_only_snapshot.RawData());
}
v8_isolate->Dispose();
ReadOnlyHeap::ClearSharedHeapForTest();
}
UNINITIALIZED_TEST(PartialSerializerContext) {
DisableAlwaysOpt();
Vector<const byte> startup_blob;
Vector<const byte> read_only_blob;
Vector<const byte> partial_blob;
PartiallySerializeContext(&startup_blob, &read_only_blob, &partial_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(partial_blob);
root = PartialDeserializer::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(partial_blob);
root2 = PartialDeserializer::DeserializeContext(
isolate, &snapshot_data, false, global_proxy,
v8::DeserializeInternalFieldsCallback())
.ToHandleChecked();
CHECK(root2->IsContext());
CHECK(!root.is_identical_to(root2));
}
partial_blob.Dispose();
}
v8_isolate->Dispose();
blobs.Dispose();
FreeCurrentEmbeddedBlob();
}
static void PartiallySerializeCustomContext(
Vector<const byte>* startup_blob_out,
Vector<const byte>* read_only_blob_out,
Vector<const byte>* partial_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; })();");
Vector<const uint8_t> source = ConstructSource(
StaticCharVector("function g() { return [,"), StaticCharVector("1,"),
StaticCharVector("];} a = g(); b = g(); b.push(1);"), 100000);
v8::MaybeLocal<v8::String> source_str = v8::String::NewFromOneByte(
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();
}
i::Context raw_context = i::Context::cast(*v8::Utils::OpenPersistent(env));
env.Reset();
SnapshotByteSink read_only_sink;
ReadOnlySerializer read_only_serializer(isolate);
read_only_serializer.SerializeReadOnlyRoots();
SnapshotByteSink startup_sink;
StartupSerializer startup_serializer(isolate, &read_only_serializer);
startup_serializer.SerializeStrongReferences();
SnapshotByteSink partial_sink;
PartialSerializer partial_serializer(isolate, &startup_serializer,
v8::SerializeInternalFieldsCallback());
partial_serializer.Serialize(&raw_context, false);
startup_serializer.SerializeWeakReferencesAndDeferred();
read_only_serializer.FinalizeSerialization();
SnapshotData read_only_snapshot(&read_only_serializer);
SnapshotData startup_snapshot(&startup_serializer);
SnapshotData partial_snapshot(&partial_serializer);
*partial_blob_out = WritePayload(partial_snapshot.RawData());
*startup_blob_out = WritePayload(startup_snapshot.RawData());
*read_only_blob_out = WritePayload(read_only_snapshot.RawData());
}
v8_isolate->Dispose();
ReadOnlyHeap::ClearSharedHeapForTest();
}
UNINITIALIZED_TEST(PartialSerializerCustomContext) {
DisableAlwaysOpt();
Vector<const byte> startup_blob;
Vector<const byte> read_only_blob;
Vector<const byte> partial_blob;
PartiallySerializeCustomContext(&startup_blob, &read_only_blob,
&partial_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(partial_blob);
root = PartialDeserializer::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);
}
partial_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(
v8_str("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);
}
typedef std::vector<std::tuple<const char*, int32_t>> Int32Expectations;
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()) {
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)));
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);
}
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());
CHECK_NULL(FixedTypedArrayBase::cast(array->elements()).external_pointer());
}
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);
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(
v8::Isolate::GetCurrent()->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();
ReadOnlyHeap::ClearSharedHeapForTest();
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);
ReadOnlyHeap::ClearSharedHeapForTest();
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);
ReadOnlyHeap::ClearSharedHeapForTest();
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();
}
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.
Vector<const uint8_t> source =
ConstructSource(StaticCharVector("var a = [];"),
StaticCharVector("a.push(function() {return 7});"),
StaticCharVector("\0"), 10000);
DisableEmbeddedBlobRefcounting();
v8::StartupData data =
CreateSnapshotDataBlob(reinterpret_cast<const char*>(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.
HeapIterator iterator(CcTest::heap());
DisallowHeapAllocation no_allocation;
int counter = 0;
for (HeapObject obj = iterator.next(); !obj.is_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(
isolate, source, Compiler::ScriptDetails(name),
v8::ScriptOriginOptions(), nullptr, cached_data, options,
ScriptCompiler::kNoCacheNoReason, NOT_NATIVES_CODE)
.ToHandleChecked();
}
static Handle<SharedFunctionInfo> CompileScriptAndProduceCache(
Isolate* isolate, Handle<String> source, Handle<String> name,
ScriptData** script_data, v8::ScriptCompiler::CompileOptions options) {
Handle<SharedFunctionInfo> sfi =
Compiler::GetSharedFunctionInfoForScript(
isolate, source, Compiler::ScriptDetails(name),
v8::ScriptOriginOptions(), nullptr, nullptr, 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);
*script_data = new i::ScriptData(buffer, cached_data->length);
(*script_data)->AcquireDataOwnership();
return sfi;
}
void TestCodeSerializerOnePlusOneImpl(bool verify_builtins_count = 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 = nullptr;
Handle<SharedFunctionInfo> orig = CompileScriptAndProduceCache(
isolate, orig_source, Handle<String>(), &cache,
v8::ScriptCompiler::kNoCompileOptions);
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(), 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(CodeSerializerOnePlusOne1) {
FLAG_serialization_chunk_size = 1;
TestCodeSerializerOnePlusOneImpl();
}
TEST(CodeSerializerOnePlusOne32) {
FLAG_serialization_chunk_size = 32;
TestCodeSerializerOnePlusOneImpl();
}
TEST(CodeSerializerOnePlusOne4K) {
FLAG_serialization_chunk_size = 4 * KB;
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()
->NewStringFromUtf8(CStrVector(source))
.ToHandleChecked();
ScriptData* cache = nullptr;
CompileScriptAndProduceCache(isolate, src, src, &cache,
v8::ScriptCompiler::kNoCompileOptions);
DisallowCompilation no_compile_expected(isolate);
Handle<SharedFunctionInfo> copy = CompileScript(
isolate, src, src, cache, v8::ScriptCompiler::kConsumeCodeCache);
MaybeHandle<SharedFunctionInfo> shared =
isolate->compilation_cache()->LookupScript(
src, src, 0, 0, v8::ScriptOriginOptions(), isolate->native_context(),
LanguageMode::kSloppy);
CHECK(*shared.ToHandleChecked() == *copy);
delete cache;
}
TEST(CodeSerializerInternalizedString) {
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(), isolate);
i::ScriptData* script_data = nullptr;
Handle<SharedFunctionInfo> orig = CompileScriptAndProduceCache(
isolate, orig_source, Handle<String>(), &script_data,
v8::ScriptCompiler::kNoCompileOptions);
Handle<JSFunction> orig_fun =
isolate->factory()->NewFunctionFromSharedFunctionInfo(
orig, isolate->native_context());
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, Handle<String>(), script_data,
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, 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 script_data;
}
TEST(CodeSerializerLargeCodeObject) {
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(
StaticCharVector("var j=1; if (j == 0) {"),
StaticCharVector(
"for (let i of Object.prototype) for (let k = 0; k < 0; ++k);"),
StaticCharVector("} j=7; j"), 2000);
Handle<String> source_str =
isolate->factory()->NewStringFromOneByte(source).ToHandleChecked();
Handle<JSObject> global(isolate->context().global_object(), isolate);
ScriptData* cache = nullptr;
Handle<SharedFunctionInfo> orig = CompileScriptAndProduceCache(
isolate, source_str, Handle<String>(), &cache,
v8::ScriptCompiler::kNoCompileOptions);
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, nullptr).ToHandleChecked();
int result_int;
CHECK(copy_result->ToInt32(&result_int));
CHECK_EQ(7, result_int);
delete cache;
source.Dispose();
}
TEST(CodeSerializerLargeCodeObjectWithIncrementalMarking) {
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()->Disable(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
Vector<const uint8_t> source = ConstructSource(
StaticCharVector("var j=1; if (j == 0) {"),
StaticCharVector("for (var i = 0; i < Object.prototype; i++);"),
StaticCharVector("} j=7; var s = 'happy_hippo'; j"), 20000);
Handle<String> source_str =
isolate->factory()->NewStringFromOneByte(source).ToHandleChecked();
// Create a string on an evacuation candidate in old space.
Handle<String> moving_object;
Page* ec_page;
{
AlwaysAllocateScope always_allocate(isolate);
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);
ScriptData* cache = nullptr;
Handle<SharedFunctionInfo> orig = CompileScriptAndProduceCache(
isolate, source_str, Handle<String>(), &cache,
v8::ScriptCompiler::kNoCompileOptions);
CHECK(heap->InSpace(orig->abstract_code(), 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, Handle<String>(), 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 =
isolate->factory()->NewFunctionFromSharedFunctionInfo(
copy, isolate->native_context());
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()->Disable(); // Disable same-isolate code cache.
v8::HandleScope scope(CcTest::isolate());
Vector<const uint8_t> source_s = ConstructSource(
StaticCharVector("var s = \""), StaticCharVector("abcdef"),
StaticCharVector("\";"), 1000000);
Vector<const uint8_t> source_t = ConstructSource(
StaticCharVector("var t = \""), StaticCharVector("uvwxyz"),
StaticCharVector("\"; 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(), isolate);
ScriptData* cache = nullptr;
Handle<SharedFunctionInfo> orig = CompileScriptAndProduceCache(
isolate, source_str, Handle<String>(), &cache,
v8::ScriptCompiler::kNoCompileOptions);
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, 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()->Disable(); // 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;
Vector<const uint8_t> source_a =
ConstructSource(StaticCharVector("var a = \""), StaticCharVector("a"),
StaticCharVector("\";"), length_of_a);
Handle<String> source_a_str =
f->NewStringFromOneByte(source_a).ToHandleChecked();
Vector<const uint8_t> source_b =
ConstructSource(StaticCharVector("var b = \""), StaticCharVector("b"),
StaticCharVector("\";"), length_of_b);
Handle<String> source_b_str =
f->NewStringFromOneByte(source_b).ToHandleChecked();
Vector<const uint8_t> source_c =
ConstructSource(StaticCharVector("var c = \""), StaticCharVector("c"),
StaticCharVector("\";"), length_of_c);
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(), isolate);
ScriptData* cache = nullptr;
Handle<SharedFunctionInfo> orig = CompileScriptAndProduceCache(
isolate, source_str, Handle<String>(), &cache,
v8::ScriptCompiler::kNoCompileOptions);
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, nullptr));
v8::Maybe<int32_t> result =
CompileRun("(a + b).length")
->Int32Value(v8::Isolate::GetCurrent()->GetCurrentContext());
CHECK_EQ(length_of_a + length_of_b, result.FromJust());
result = CompileRun("(b + c).length")
->Int32Value(v8::Isolate::GetCurrent()->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()->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(), isolate);
ScriptData* cache = nullptr;
Handle<SharedFunctionInfo> orig = CompileScriptAndProduceCache(
isolate, source_string, Handle<String>(), &cache,
v8::ScriptCompiler::kNoCompileOptions);
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, 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()->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(StaticCharVector(""), StaticCharVector("abcdef"),
StaticCharVector(""), 999999);
Handle<String> name = f->NewStringFromOneByte(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);
ScriptData* cache = nullptr;
Handle<SharedFunctionInfo> orig = CompileScriptAndProduceCache(
isolate, source_str, Handle<String>(), &cache,
v8::ScriptCompiler::kNoCompileOptions);
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, 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()->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(), isolate);
ScriptData* cache = nullptr;
Handle<SharedFunctionInfo> orig =
CompileScriptAndProduceCache(isolate, source_string, name, &cache,
v8::ScriptCompiler::kNoCompileOptions);
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, 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(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(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(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);
{
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_expected(
reinterpret_cast<Isolate*>(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();
CHECK_EQ(bytecode.osr_loop_nesting_level(), 0);
{
DisallowCompilation no_compile_expected(
reinterpret_cast<Isolate*>(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(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);
// 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) {
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::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(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)