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api.cc
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// Copyright 2012 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/api.h"
#include <string.h> // For memcpy, strlen.
#ifdef V8_USE_ADDRESS_SANITIZER
#include <sanitizer/asan_interface.h>
#endif // V8_USE_ADDRESS_SANITIZER
#include <cmath> // For isnan.
#include "include/v8-debug.h"
#include "include/v8-profiler.h"
#include "include/v8-testing.h"
#include "src/assert-scope.h"
#include "src/base/platform/platform.h"
#include "src/base/platform/time.h"
#include "src/base/utils/random-number-generator.h"
#include "src/bootstrapper.h"
#include "src/code-stubs.h"
#include "src/compiler.h"
#include "src/conversions-inl.h"
#include "src/counters.h"
#include "src/cpu-profiler.h"
#include "src/debug.h"
#include "src/deoptimizer.h"
#include "src/execution.h"
#include "src/global-handles.h"
#include "src/heap-profiler.h"
#include "src/heap-snapshot-generator-inl.h"
#include "src/icu_util.h"
#include "src/json-parser.h"
#include "src/messages.h"
#include "src/natives.h"
#include "src/parser.h"
#include "src/profile-generator-inl.h"
#include "src/property.h"
#include "src/property-details.h"
#include "src/runtime.h"
#include "src/runtime-profiler.h"
#include "src/scanner-character-streams.h"
#include "src/simulator.h"
#include "src/snapshot.h"
#include "src/unicode-inl.h"
#include "src/v8threads.h"
#include "src/version.h"
#include "src/vm-state-inl.h"
#define LOG_API(isolate, expr) LOG(isolate, ApiEntryCall(expr))
#define ENTER_V8(isolate) \
ASSERT((isolate)->IsInitialized()); \
i::VMState<i::OTHER> __state__((isolate))
namespace v8 {
#define ON_BAILOUT(isolate, location, code) \
if (IsExecutionTerminatingCheck(isolate)) { \
code; \
UNREACHABLE(); \
}
#define EXCEPTION_PREAMBLE(isolate) \
(isolate)->handle_scope_implementer()->IncrementCallDepth(); \
ASSERT(!(isolate)->external_caught_exception()); \
bool has_pending_exception = false
#define EXCEPTION_BAILOUT_CHECK_GENERIC(isolate, value, do_callback) \
do { \
i::HandleScopeImplementer* handle_scope_implementer = \
(isolate)->handle_scope_implementer(); \
handle_scope_implementer->DecrementCallDepth(); \
if (has_pending_exception) { \
bool call_depth_is_zero = handle_scope_implementer->CallDepthIsZero(); \
(isolate)->OptionalRescheduleException(call_depth_is_zero); \
do_callback \
return value; \
} \
do_callback \
} while (false)
#define EXCEPTION_BAILOUT_CHECK_DO_CALLBACK(isolate, value) \
EXCEPTION_BAILOUT_CHECK_GENERIC( \
isolate, value, isolate->FireCallCompletedCallback();)
#define EXCEPTION_BAILOUT_CHECK(isolate, value) \
EXCEPTION_BAILOUT_CHECK_GENERIC(isolate, value, ;)
// --- E x c e p t i o n B e h a v i o r ---
void i::FatalProcessOutOfMemory(const char* location) {
i::V8::FatalProcessOutOfMemory(location, false);
}
// When V8 cannot allocated memory FatalProcessOutOfMemory is called.
// The default fatal error handler is called and execution is stopped.
void i::V8::FatalProcessOutOfMemory(const char* location, bool take_snapshot) {
i::HeapStats heap_stats;
int start_marker;
heap_stats.start_marker = &start_marker;
int new_space_size;
heap_stats.new_space_size = &new_space_size;
int new_space_capacity;
heap_stats.new_space_capacity = &new_space_capacity;
intptr_t old_pointer_space_size;
heap_stats.old_pointer_space_size = &old_pointer_space_size;
intptr_t old_pointer_space_capacity;
heap_stats.old_pointer_space_capacity = &old_pointer_space_capacity;
intptr_t old_data_space_size;
heap_stats.old_data_space_size = &old_data_space_size;
intptr_t old_data_space_capacity;
heap_stats.old_data_space_capacity = &old_data_space_capacity;
intptr_t code_space_size;
heap_stats.code_space_size = &code_space_size;
intptr_t code_space_capacity;
heap_stats.code_space_capacity = &code_space_capacity;
intptr_t map_space_size;
heap_stats.map_space_size = &map_space_size;
intptr_t map_space_capacity;
heap_stats.map_space_capacity = &map_space_capacity;
intptr_t cell_space_size;
heap_stats.cell_space_size = &cell_space_size;
intptr_t cell_space_capacity;
heap_stats.cell_space_capacity = &cell_space_capacity;
intptr_t property_cell_space_size;
heap_stats.property_cell_space_size = &property_cell_space_size;
intptr_t property_cell_space_capacity;
heap_stats.property_cell_space_capacity = &property_cell_space_capacity;
intptr_t lo_space_size;
heap_stats.lo_space_size = &lo_space_size;
int global_handle_count;
heap_stats.global_handle_count = &global_handle_count;
int weak_global_handle_count;
heap_stats.weak_global_handle_count = &weak_global_handle_count;
int pending_global_handle_count;
heap_stats.pending_global_handle_count = &pending_global_handle_count;
int near_death_global_handle_count;
heap_stats.near_death_global_handle_count = &near_death_global_handle_count;
int free_global_handle_count;
heap_stats.free_global_handle_count = &free_global_handle_count;
intptr_t memory_allocator_size;
heap_stats.memory_allocator_size = &memory_allocator_size;
intptr_t memory_allocator_capacity;
heap_stats.memory_allocator_capacity = &memory_allocator_capacity;
int objects_per_type[LAST_TYPE + 1] = {0};
heap_stats.objects_per_type = objects_per_type;
int size_per_type[LAST_TYPE + 1] = {0};
heap_stats.size_per_type = size_per_type;
int os_error;
heap_stats.os_error = &os_error;
int end_marker;
heap_stats.end_marker = &end_marker;
i::Isolate* isolate = i::Isolate::Current();
if (isolate->heap()->HasBeenSetUp()) {
// BUG(1718): Don't use the take_snapshot since we don't support
// HeapIterator here without doing a special GC.
isolate->heap()->RecordStats(&heap_stats, false);
}
Utils::ApiCheck(false, location, "Allocation failed - process out of memory");
// If the fatal error handler returns, we stop execution.
FATAL("API fatal error handler returned after process out of memory");
}
void Utils::ReportApiFailure(const char* location, const char* message) {
i::Isolate* isolate = i::Isolate::Current();
FatalErrorCallback callback = isolate->exception_behavior();
if (callback == NULL) {
base::OS::PrintError("\n#\n# Fatal error in %s\n# %s\n#\n\n", location,
message);
base::OS::Abort();
} else {
callback(location, message);
}
isolate->SignalFatalError();
}
bool V8::IsDead() {
i::Isolate* isolate = i::Isolate::Current();
return isolate->IsDead();
}
static inline bool IsExecutionTerminatingCheck(i::Isolate* isolate) {
if (!isolate->IsInitialized()) return false;
if (isolate->has_scheduled_exception()) {
return isolate->scheduled_exception() ==
isolate->heap()->termination_exception();
}
return false;
}
// --- S t a t i c s ---
static bool InitializeHelper(i::Isolate* isolate) {
// If the isolate has a function entry hook, it needs to re-build all its
// code stubs with entry hooks embedded, so let's deserialize a snapshot.
if (isolate == NULL || isolate->function_entry_hook() == NULL) {
if (i::Snapshot::Initialize())
return true;
}
return i::V8::Initialize(NULL);
}
static inline bool EnsureInitializedForIsolate(i::Isolate* isolate,
const char* location) {
return (isolate != NULL && isolate->IsInitialized()) ||
Utils::ApiCheck(InitializeHelper(isolate),
location,
"Error initializing V8");
}
StartupDataDecompressor::StartupDataDecompressor()
: raw_data(i::NewArray<char*>(V8::GetCompressedStartupDataCount())) {
for (int i = 0; i < V8::GetCompressedStartupDataCount(); ++i) {
raw_data[i] = NULL;
}
}
StartupDataDecompressor::~StartupDataDecompressor() {
for (int i = 0; i < V8::GetCompressedStartupDataCount(); ++i) {
i::DeleteArray(raw_data[i]);
}
i::DeleteArray(raw_data);
}
int StartupDataDecompressor::Decompress() {
int compressed_data_count = V8::GetCompressedStartupDataCount();
StartupData* compressed_data =
i::NewArray<StartupData>(compressed_data_count);
V8::GetCompressedStartupData(compressed_data);
for (int i = 0; i < compressed_data_count; ++i) {
char* decompressed = raw_data[i] =
i::NewArray<char>(compressed_data[i].raw_size);
if (compressed_data[i].compressed_size != 0) {
int result = DecompressData(decompressed,
&compressed_data[i].raw_size,
compressed_data[i].data,
compressed_data[i].compressed_size);
if (result != 0) return result;
} else {
ASSERT_EQ(0, compressed_data[i].raw_size);
}
compressed_data[i].data = decompressed;
}
V8::SetDecompressedStartupData(compressed_data);
i::DeleteArray(compressed_data);
return 0;
}
StartupData::CompressionAlgorithm V8::GetCompressedStartupDataAlgorithm() {
#ifdef COMPRESS_STARTUP_DATA_BZ2
return StartupData::kBZip2;
#else
return StartupData::kUncompressed;
#endif
}
enum CompressedStartupDataItems {
kSnapshot = 0,
kSnapshotContext,
kLibraries,
kExperimentalLibraries,
kCompressedStartupDataCount
};
int V8::GetCompressedStartupDataCount() {
#ifdef COMPRESS_STARTUP_DATA_BZ2
return kCompressedStartupDataCount;
#else
return 0;
#endif
}
void V8::GetCompressedStartupData(StartupData* compressed_data) {
#ifdef COMPRESS_STARTUP_DATA_BZ2
compressed_data[kSnapshot].data =
reinterpret_cast<const char*>(i::Snapshot::data());
compressed_data[kSnapshot].compressed_size = i::Snapshot::size();
compressed_data[kSnapshot].raw_size = i::Snapshot::raw_size();
compressed_data[kSnapshotContext].data =
reinterpret_cast<const char*>(i::Snapshot::context_data());
compressed_data[kSnapshotContext].compressed_size =
i::Snapshot::context_size();
compressed_data[kSnapshotContext].raw_size = i::Snapshot::context_raw_size();
i::Vector<const i::byte> libraries_source = i::Natives::GetScriptsSource();
compressed_data[kLibraries].data =
reinterpret_cast<const char*>(libraries_source.start());
compressed_data[kLibraries].compressed_size = libraries_source.length();
compressed_data[kLibraries].raw_size = i::Natives::GetRawScriptsSize();
i::Vector<const i::byte> exp_libraries_source =
i::ExperimentalNatives::GetScriptsSource();
compressed_data[kExperimentalLibraries].data =
reinterpret_cast<const char*>(exp_libraries_source.start());
compressed_data[kExperimentalLibraries].compressed_size =
exp_libraries_source.length();
compressed_data[kExperimentalLibraries].raw_size =
i::ExperimentalNatives::GetRawScriptsSize();
#endif
}
void V8::SetDecompressedStartupData(StartupData* decompressed_data) {
#ifdef COMPRESS_STARTUP_DATA_BZ2
ASSERT_EQ(i::Snapshot::raw_size(), decompressed_data[kSnapshot].raw_size);
i::Snapshot::set_raw_data(
reinterpret_cast<const i::byte*>(decompressed_data[kSnapshot].data));
ASSERT_EQ(i::Snapshot::context_raw_size(),
decompressed_data[kSnapshotContext].raw_size);
i::Snapshot::set_context_raw_data(
reinterpret_cast<const i::byte*>(
decompressed_data[kSnapshotContext].data));
ASSERT_EQ(i::Natives::GetRawScriptsSize(),
decompressed_data[kLibraries].raw_size);
i::Vector<const char> libraries_source(
decompressed_data[kLibraries].data,
decompressed_data[kLibraries].raw_size);
i::Natives::SetRawScriptsSource(libraries_source);
ASSERT_EQ(i::ExperimentalNatives::GetRawScriptsSize(),
decompressed_data[kExperimentalLibraries].raw_size);
i::Vector<const char> exp_libraries_source(
decompressed_data[kExperimentalLibraries].data,
decompressed_data[kExperimentalLibraries].raw_size);
i::ExperimentalNatives::SetRawScriptsSource(exp_libraries_source);
#endif
}
void V8::SetNativesDataBlob(StartupData* natives_blob) {
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
i::SetNativesFromFile(natives_blob);
#else
CHECK(false);
#endif
}
void V8::SetSnapshotDataBlob(StartupData* snapshot_blob) {
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
i::SetSnapshotFromFile(snapshot_blob);
#else
CHECK(false);
#endif
}
void V8::SetFatalErrorHandler(FatalErrorCallback that) {
i::Isolate* isolate = i::Isolate::UncheckedCurrent();
isolate->set_exception_behavior(that);
}
void V8::SetAllowCodeGenerationFromStringsCallback(
AllowCodeGenerationFromStringsCallback callback) {
i::Isolate* isolate = i::Isolate::UncheckedCurrent();
isolate->set_allow_code_gen_callback(callback);
}
void V8::SetFlagsFromString(const char* str, int length) {
i::FlagList::SetFlagsFromString(str, length);
}
void V8::SetFlagsFromCommandLine(int* argc, char** argv, bool remove_flags) {
i::FlagList::SetFlagsFromCommandLine(argc, argv, remove_flags);
}
RegisteredExtension* RegisteredExtension::first_extension_ = NULL;
RegisteredExtension::RegisteredExtension(Extension* extension)
: extension_(extension) { }
void RegisteredExtension::Register(RegisteredExtension* that) {
that->next_ = first_extension_;
first_extension_ = that;
}
void RegisteredExtension::UnregisterAll() {
RegisteredExtension* re = first_extension_;
while (re != NULL) {
RegisteredExtension* next = re->next();
delete re;
re = next;
}
}
void RegisterExtension(Extension* that) {
RegisteredExtension* extension = new RegisteredExtension(that);
RegisteredExtension::Register(extension);
}
Extension::Extension(const char* name,
const char* source,
int dep_count,
const char** deps,
int source_length)
: name_(name),
source_length_(source_length >= 0 ?
source_length :
(source ? static_cast<int>(strlen(source)) : 0)),
source_(source, source_length_),
dep_count_(dep_count),
deps_(deps),
auto_enable_(false) {
CHECK(source != NULL || source_length_ == 0);
}
ResourceConstraints::ResourceConstraints()
: max_semi_space_size_(0),
max_old_space_size_(0),
max_executable_size_(0),
stack_limit_(NULL),
max_available_threads_(0),
code_range_size_(0) { }
void ResourceConstraints::ConfigureDefaults(uint64_t physical_memory,
uint64_t virtual_memory_limit,
uint32_t number_of_processors) {
#if V8_OS_ANDROID
// Android has higher physical memory requirements before raising the maximum
// heap size limits since it has no swap space.
const uint64_t low_limit = 512ul * i::MB;
const uint64_t medium_limit = 1ul * i::GB;
const uint64_t high_limit = 2ul * i::GB;
#else
const uint64_t low_limit = 512ul * i::MB;
const uint64_t medium_limit = 768ul * i::MB;
const uint64_t high_limit = 1ul * i::GB;
#endif
if (physical_memory <= low_limit) {
set_max_semi_space_size(i::Heap::kMaxSemiSpaceSizeLowMemoryDevice);
set_max_old_space_size(i::Heap::kMaxOldSpaceSizeLowMemoryDevice);
set_max_executable_size(i::Heap::kMaxExecutableSizeLowMemoryDevice);
} else if (physical_memory <= medium_limit) {
set_max_semi_space_size(i::Heap::kMaxSemiSpaceSizeMediumMemoryDevice);
set_max_old_space_size(i::Heap::kMaxOldSpaceSizeMediumMemoryDevice);
set_max_executable_size(i::Heap::kMaxExecutableSizeMediumMemoryDevice);
} else if (physical_memory <= high_limit) {
set_max_semi_space_size(i::Heap::kMaxSemiSpaceSizeHighMemoryDevice);
set_max_old_space_size(i::Heap::kMaxOldSpaceSizeHighMemoryDevice);
set_max_executable_size(i::Heap::kMaxExecutableSizeHighMemoryDevice);
} else {
set_max_semi_space_size(i::Heap::kMaxSemiSpaceSizeHugeMemoryDevice);
set_max_old_space_size(i::Heap::kMaxOldSpaceSizeHugeMemoryDevice);
set_max_executable_size(i::Heap::kMaxExecutableSizeHugeMemoryDevice);
}
set_max_available_threads(i::Max(i::Min(number_of_processors, 4u), 1u));
if (virtual_memory_limit > 0 && i::kRequiresCodeRange) {
// Reserve no more than 1/8 of the memory for the code range, but at most
// kMaximalCodeRangeSize.
set_code_range_size(
i::Min(i::kMaximalCodeRangeSize / i::MB,
static_cast<size_t>((virtual_memory_limit >> 3) / i::MB)));
}
}
bool SetResourceConstraints(Isolate* v8_isolate,
ResourceConstraints* constraints) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
int semi_space_size = constraints->max_semi_space_size();
int old_space_size = constraints->max_old_space_size();
int max_executable_size = constraints->max_executable_size();
size_t code_range_size = constraints->code_range_size();
if (semi_space_size != 0 || old_space_size != 0 ||
max_executable_size != 0 || code_range_size != 0) {
// After initialization it's too late to change Heap constraints.
ASSERT(!isolate->IsInitialized());
bool result = isolate->heap()->ConfigureHeap(semi_space_size,
old_space_size,
max_executable_size,
code_range_size);
if (!result) return false;
}
if (constraints->stack_limit() != NULL) {
uintptr_t limit = reinterpret_cast<uintptr_t>(constraints->stack_limit());
isolate->stack_guard()->SetStackLimit(limit);
}
isolate->set_max_available_threads(constraints->max_available_threads());
return true;
}
i::Object** V8::GlobalizeReference(i::Isolate* isolate, i::Object** obj) {
LOG_API(isolate, "Persistent::New");
i::Handle<i::Object> result = isolate->global_handles()->Create(*obj);
#ifdef DEBUG
(*obj)->ObjectVerify();
#endif // DEBUG
return result.location();
}
i::Object** V8::CopyPersistent(i::Object** obj) {
i::Handle<i::Object> result = i::GlobalHandles::CopyGlobal(obj);
#ifdef DEBUG
(*obj)->ObjectVerify();
#endif // DEBUG
return result.location();
}
void V8::MakeWeak(i::Object** object,
void* parameters,
WeakCallback weak_callback) {
i::GlobalHandles::MakeWeak(object, parameters, weak_callback);
}
void* V8::ClearWeak(i::Object** obj) {
return i::GlobalHandles::ClearWeakness(obj);
}
void V8::DisposeGlobal(i::Object** obj) {
i::GlobalHandles::Destroy(obj);
}
void V8::Eternalize(Isolate* v8_isolate, Value* value, int* index) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
i::Object* object = *Utils::OpenHandle(value);
isolate->eternal_handles()->Create(isolate, object, index);
}
Local<Value> V8::GetEternal(Isolate* v8_isolate, int index) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
return Utils::ToLocal(isolate->eternal_handles()->Get(index));
}
// --- H a n d l e s ---
HandleScope::HandleScope(Isolate* isolate) {
Initialize(isolate);
}
void HandleScope::Initialize(Isolate* isolate) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
// We do not want to check the correct usage of the Locker class all over the
// place, so we do it only here: Without a HandleScope, an embedder can do
// almost nothing, so it is enough to check in this central place.
Utils::ApiCheck(!v8::Locker::IsActive() ||
internal_isolate->thread_manager()->IsLockedByCurrentThread(),
"HandleScope::HandleScope",
"Entering the V8 API without proper locking in place");
i::HandleScopeData* current = internal_isolate->handle_scope_data();
isolate_ = internal_isolate;
prev_next_ = current->next;
prev_limit_ = current->limit;
current->level++;
}
HandleScope::~HandleScope() {
i::HandleScope::CloseScope(isolate_, prev_next_, prev_limit_);
}
int HandleScope::NumberOfHandles(Isolate* isolate) {
return i::HandleScope::NumberOfHandles(
reinterpret_cast<i::Isolate*>(isolate));
}
i::Object** HandleScope::CreateHandle(i::Isolate* isolate, i::Object* value) {
return i::HandleScope::CreateHandle(isolate, value);
}
i::Object** HandleScope::CreateHandle(i::HeapObject* heap_object,
i::Object* value) {
ASSERT(heap_object->IsHeapObject());
return i::HandleScope::CreateHandle(heap_object->GetIsolate(), value);
}
EscapableHandleScope::EscapableHandleScope(Isolate* v8_isolate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
escape_slot_ = CreateHandle(isolate, isolate->heap()->the_hole_value());
Initialize(v8_isolate);
}
i::Object** EscapableHandleScope::Escape(i::Object** escape_value) {
i::Heap* heap = reinterpret_cast<i::Isolate*>(GetIsolate())->heap();
Utils::ApiCheck(*escape_slot_ == heap->the_hole_value(),
"EscapeableHandleScope::Escape",
"Escape value set twice");
if (escape_value == NULL) {
*escape_slot_ = heap->undefined_value();
return NULL;
}
*escape_slot_ = *escape_value;
return escape_slot_;
}
void Context::Enter() {
i::Handle<i::Context> env = Utils::OpenHandle(this);
i::Isolate* isolate = env->GetIsolate();
ENTER_V8(isolate);
i::HandleScopeImplementer* impl = isolate->handle_scope_implementer();
impl->EnterContext(env);
impl->SaveContext(isolate->context());
isolate->set_context(*env);
}
void Context::Exit() {
i::Handle<i::Context> env = Utils::OpenHandle(this);
i::Isolate* isolate = env->GetIsolate();
ENTER_V8(isolate);
i::HandleScopeImplementer* impl = isolate->handle_scope_implementer();
if (!Utils::ApiCheck(impl->LastEnteredContextWas(env),
"v8::Context::Exit()",
"Cannot exit non-entered context")) {
return;
}
impl->LeaveContext();
isolate->set_context(impl->RestoreContext());
}
static void* DecodeSmiToAligned(i::Object* value, const char* location) {
Utils::ApiCheck(value->IsSmi(), location, "Not a Smi");
return reinterpret_cast<void*>(value);
}
static i::Smi* EncodeAlignedAsSmi(void* value, const char* location) {
i::Smi* smi = reinterpret_cast<i::Smi*>(value);
Utils::ApiCheck(smi->IsSmi(), location, "Pointer is not aligned");
return smi;
}
static i::Handle<i::FixedArray> EmbedderDataFor(Context* context,
int index,
bool can_grow,
const char* location) {
i::Handle<i::Context> env = Utils::OpenHandle(context);
bool ok =
Utils::ApiCheck(env->IsNativeContext(),
location,
"Not a native context") &&
Utils::ApiCheck(index >= 0, location, "Negative index");
if (!ok) return i::Handle<i::FixedArray>();
i::Handle<i::FixedArray> data(env->embedder_data());
if (index < data->length()) return data;
if (!Utils::ApiCheck(can_grow, location, "Index too large")) {
return i::Handle<i::FixedArray>();
}
int new_size = i::Max(index, data->length() << 1) + 1;
data = i::FixedArray::CopySize(data, new_size);
env->set_embedder_data(*data);
return data;
}
v8::Local<v8::Value> Context::SlowGetEmbedderData(int index) {
const char* location = "v8::Context::GetEmbedderData()";
i::Handle<i::FixedArray> data = EmbedderDataFor(this, index, false, location);
if (data.is_null()) return Local<Value>();
i::Handle<i::Object> result(data->get(index), data->GetIsolate());
return Utils::ToLocal(result);
}
void Context::SetEmbedderData(int index, v8::Handle<Value> value) {
const char* location = "v8::Context::SetEmbedderData()";
i::Handle<i::FixedArray> data = EmbedderDataFor(this, index, true, location);
if (data.is_null()) return;
i::Handle<i::Object> val = Utils::OpenHandle(*value);
data->set(index, *val);
ASSERT_EQ(*Utils::OpenHandle(*value),
*Utils::OpenHandle(*GetEmbedderData(index)));
}
void* Context::SlowGetAlignedPointerFromEmbedderData(int index) {
const char* location = "v8::Context::GetAlignedPointerFromEmbedderData()";
i::Handle<i::FixedArray> data = EmbedderDataFor(this, index, false, location);
if (data.is_null()) return NULL;
return DecodeSmiToAligned(data->get(index), location);
}
void Context::SetAlignedPointerInEmbedderData(int index, void* value) {
const char* location = "v8::Context::SetAlignedPointerInEmbedderData()";
i::Handle<i::FixedArray> data = EmbedderDataFor(this, index, true, location);
data->set(index, EncodeAlignedAsSmi(value, location));
ASSERT_EQ(value, GetAlignedPointerFromEmbedderData(index));
}
// --- N e a n d e r ---
// A constructor cannot easily return an error value, therefore it is necessary
// to check for a dead VM with ON_BAILOUT before constructing any Neander
// objects. To remind you about this there is no HandleScope in the
// NeanderObject constructor. When you add one to the site calling the
// constructor you should check that you ensured the VM was not dead first.
NeanderObject::NeanderObject(v8::internal::Isolate* isolate, int size) {
EnsureInitializedForIsolate(isolate, "v8::Nowhere");
ENTER_V8(isolate);
value_ = isolate->factory()->NewNeanderObject();
i::Handle<i::FixedArray> elements = isolate->factory()->NewFixedArray(size);
value_->set_elements(*elements);
}
int NeanderObject::size() {
return i::FixedArray::cast(value_->elements())->length();
}
NeanderArray::NeanderArray(v8::internal::Isolate* isolate) : obj_(isolate, 2) {
obj_.set(0, i::Smi::FromInt(0));
}
int NeanderArray::length() {
return i::Smi::cast(obj_.get(0))->value();
}
i::Object* NeanderArray::get(int offset) {
ASSERT(0 <= offset);
ASSERT(offset < length());
return obj_.get(offset + 1);
}
// This method cannot easily return an error value, therefore it is necessary
// to check for a dead VM with ON_BAILOUT before calling it. To remind you
// about this there is no HandleScope in this method. When you add one to the
// site calling this method you should check that you ensured the VM was not
// dead first.
void NeanderArray::add(i::Handle<i::Object> value) {
int length = this->length();
int size = obj_.size();
if (length == size - 1) {
i::Factory* factory = i::Isolate::Current()->factory();
i::Handle<i::FixedArray> new_elms = factory->NewFixedArray(2 * size);
for (int i = 0; i < length; i++)
new_elms->set(i + 1, get(i));
obj_.value()->set_elements(*new_elms);
}
obj_.set(length + 1, *value);
obj_.set(0, i::Smi::FromInt(length + 1));
}
void NeanderArray::set(int index, i::Object* value) {
if (index < 0 || index >= this->length()) return;
obj_.set(index + 1, value);
}
// --- T e m p l a t e ---
static void InitializeTemplate(i::Handle<i::TemplateInfo> that, int type) {
that->set_tag(i::Smi::FromInt(type));
}
static void TemplateSet(i::Isolate* isolate,
v8::Template* templ,
int length,
v8::Handle<v8::Data>* data) {
i::Handle<i::Object> list(Utils::OpenHandle(templ)->property_list(), isolate);
if (list->IsUndefined()) {
list = NeanderArray(isolate).value();
Utils::OpenHandle(templ)->set_property_list(*list);
}
NeanderArray array(list);
array.add(isolate->factory()->NewNumberFromInt(length));
for (int i = 0; i < length; i++) {
i::Handle<i::Object> value = data[i].IsEmpty() ?
i::Handle<i::Object>(isolate->factory()->undefined_value()) :
Utils::OpenHandle(*data[i]);
array.add(value);
}
}
void Template::Set(v8::Handle<String> name,
v8::Handle<Data> value,
v8::PropertyAttribute attribute) {
i::Isolate* isolate = i::Isolate::Current();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
const int kSize = 3;
v8::Isolate* v8_isolate = reinterpret_cast<v8::Isolate*>(isolate);
v8::Handle<v8::Data> data[kSize] = {
name,
value,
v8::Integer::New(v8_isolate, attribute)};
TemplateSet(isolate, this, kSize, data);
}
void Template::SetAccessorProperty(
v8::Local<v8::String> name,
v8::Local<FunctionTemplate> getter,
v8::Local<FunctionTemplate> setter,
v8::PropertyAttribute attribute,
v8::AccessControl access_control) {
// TODO(verwaest): Remove |access_control|.
ASSERT_EQ(v8::DEFAULT, access_control);
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
ASSERT(!name.IsEmpty());
ASSERT(!getter.IsEmpty() || !setter.IsEmpty());
i::HandleScope scope(isolate);
const int kSize = 5;
v8::Isolate* v8_isolate = reinterpret_cast<v8::Isolate*>(isolate);
v8::Handle<v8::Data> data[kSize] = {
name,
getter,
setter,
v8::Integer::New(v8_isolate, attribute)};
TemplateSet(isolate, this, kSize, data);
}
// --- F u n c t i o n T e m p l a t e ---
static void InitializeFunctionTemplate(
i::Handle<i::FunctionTemplateInfo> info) {
info->set_tag(i::Smi::FromInt(Consts::FUNCTION_TEMPLATE));
info->set_flag(0);
}
Local<ObjectTemplate> FunctionTemplate::PrototypeTemplate() {
i::Isolate* i_isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(i_isolate);
i::Handle<i::Object> result(Utils::OpenHandle(this)->prototype_template(),
i_isolate);
if (result->IsUndefined()) {
v8::Isolate* isolate = reinterpret_cast<v8::Isolate*>(i_isolate);
result = Utils::OpenHandle(*ObjectTemplate::New(isolate));
Utils::OpenHandle(this)->set_prototype_template(*result);
}
return ToApiHandle<ObjectTemplate>(result);
}
void FunctionTemplate::Inherit(v8::Handle<FunctionTemplate> value) {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
Utils::OpenHandle(this)->set_parent_template(*Utils::OpenHandle(*value));
}
static Local<FunctionTemplate> FunctionTemplateNew(
i::Isolate* isolate,
FunctionCallback callback,
v8::Handle<Value> data,
v8::Handle<Signature> signature,
int length,
bool do_not_cache) {
i::Handle<i::Struct> struct_obj =
isolate->factory()->NewStruct(i::FUNCTION_TEMPLATE_INFO_TYPE);
i::Handle<i::FunctionTemplateInfo> obj =
i::Handle<i::FunctionTemplateInfo>::cast(struct_obj);
InitializeFunctionTemplate(obj);
obj->set_do_not_cache(do_not_cache);
int next_serial_number = 0;
if (!do_not_cache) {
next_serial_number = isolate->next_serial_number() + 1;
isolate->set_next_serial_number(next_serial_number);
}
obj->set_serial_number(i::Smi::FromInt(next_serial_number));
if (callback != 0) {
if (data.IsEmpty()) {
data = v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
Utils::ToLocal(obj)->SetCallHandler(callback, data);
}
obj->set_length(length);
obj->set_undetectable(false);
obj->set_needs_access_check(false);
if (!signature.IsEmpty())
obj->set_signature(*Utils::OpenHandle(*signature));
return Utils::ToLocal(obj);
}
Local<FunctionTemplate> FunctionTemplate::New(
Isolate* isolate,
FunctionCallback callback,
v8::Handle<Value> data,
v8::Handle<Signature> signature,
int length) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
EnsureInitializedForIsolate(i_isolate, "v8::FunctionTemplate::New()");
LOG_API(i_isolate, "FunctionTemplate::New");
ENTER_V8(i_isolate);
return FunctionTemplateNew(
i_isolate, callback, data, signature, length, false);
}
Local<Signature> Signature::New(Isolate* isolate,
Handle<FunctionTemplate> receiver, int argc,
Handle<FunctionTemplate> argv[]) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
EnsureInitializedForIsolate(i_isolate, "v8::Signature::New()");
LOG_API(i_isolate, "Signature::New");
ENTER_V8(i_isolate);
i::Handle<i::Struct> struct_obj =
i_isolate->factory()->NewStruct(i::SIGNATURE_INFO_TYPE);
i::Handle<i::SignatureInfo> obj =
i::Handle<i::SignatureInfo>::cast(struct_obj);
if (!receiver.IsEmpty()) obj->set_receiver(*Utils::OpenHandle(*receiver));
if (argc > 0) {
i::Handle<i::FixedArray> args = i_isolate->factory()->NewFixedArray(argc);
for (int i = 0; i < argc; i++) {
if (!argv[i].IsEmpty())
args->set(i, *Utils::OpenHandle(*argv[i]));
}
obj->set_args(*args);
}
return Utils::ToLocal(obj);
}
Local<AccessorSignature> AccessorSignature::New(
Isolate* isolate,
Handle<FunctionTemplate> receiver) {
return Utils::AccessorSignatureToLocal(Utils::OpenHandle(*receiver));
}
template<typename Operation>
static Local<Operation> NewDescriptor(
Isolate* isolate,
const i::DeclaredAccessorDescriptorData& data,
Data* previous_descriptor) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
i::Handle<i::DeclaredAccessorDescriptor> previous =
i::Handle<i::DeclaredAccessorDescriptor>();
if (previous_descriptor != NULL) {
previous = Utils::OpenHandle(
static_cast<DeclaredAccessorDescriptor*>(previous_descriptor));
}
i::Handle<i::DeclaredAccessorDescriptor> descriptor =
i::DeclaredAccessorDescriptor::Create(internal_isolate, data, previous);
return Utils::Convert<i::DeclaredAccessorDescriptor, Operation>(descriptor);
}
Local<RawOperationDescriptor>
ObjectOperationDescriptor::NewInternalFieldDereference(
Isolate* isolate,
int internal_field) {
i::DeclaredAccessorDescriptorData data;