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// Copyright 2012 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 <stdlib.h>
#include <utility>
#include "src/compilation-cache.h"
#include "src/context-measure.h"
#include "src/deoptimizer.h"
#include "src/execution.h"
#include "src/factory.h"
#include "src/field-type.h"
#include "src/global-handles.h"
#include "src/heap/gc-tracer.h"
#include "src/heap/memory-reducer.h"
#include "src/ic/ic.h"
#include "src/macro-assembler.h"
#include "src/regexp/jsregexp.h"
#include "src/snapshot/snapshot.h"
#include "test/cctest/cctest.h"
#include "test/cctest/heap/heap-tester.h"
#include "test/cctest/heap/utils-inl.h"
#include "test/cctest/test-feedback-vector.h"
namespace v8 {
namespace internal {
static void CheckMap(Map* map, int type, int instance_size) {
CHECK(map->IsHeapObject());
#ifdef DEBUG
CHECK(CcTest::heap()->Contains(map));
#endif
CHECK_EQ(CcTest::heap()->meta_map(), map->map());
CHECK_EQ(type, map->instance_type());
CHECK_EQ(instance_size, map->instance_size());
}
TEST(HeapMaps) {
CcTest::InitializeVM();
Heap* heap = CcTest::heap();
CheckMap(heap->meta_map(), MAP_TYPE, Map::kSize);
CheckMap(heap->heap_number_map(), HEAP_NUMBER_TYPE, HeapNumber::kSize);
#define SIMD128_TYPE(TYPE, Type, type, lane_count, lane_type) \
CheckMap(heap->type##_map(), SIMD128_VALUE_TYPE, Type::kSize);
SIMD128_TYPES(SIMD128_TYPE)
#undef SIMD128_TYPE
CheckMap(heap->fixed_array_map(), FIXED_ARRAY_TYPE, kVariableSizeSentinel);
CheckMap(heap->string_map(), STRING_TYPE, kVariableSizeSentinel);
}
static void CheckOddball(Isolate* isolate, Object* obj, const char* string) {
CHECK(obj->IsOddball());
Handle<Object> handle(obj, isolate);
Object* print_string = *Object::ToString(isolate, handle).ToHandleChecked();
CHECK(String::cast(print_string)->IsUtf8EqualTo(CStrVector(string)));
}
static void CheckSmi(Isolate* isolate, int value, const char* string) {
Handle<Object> handle(Smi::FromInt(value), isolate);
Object* print_string = *Object::ToString(isolate, handle).ToHandleChecked();
CHECK(String::cast(print_string)->IsUtf8EqualTo(CStrVector(string)));
}
static void CheckNumber(Isolate* isolate, double value, const char* string) {
Handle<Object> number = isolate->factory()->NewNumber(value);
CHECK(number->IsNumber());
Handle<Object> print_string =
Object::ToString(isolate, number).ToHandleChecked();
CHECK(String::cast(*print_string)->IsUtf8EqualTo(CStrVector(string)));
}
static void CheckFindCodeObject(Isolate* isolate) {
// Test FindCodeObject
#define __ assm.
Assembler assm(isolate, NULL, 0);
__ nop(); // supported on all architectures
CodeDesc desc;
assm.GetCode(&desc);
Handle<Code> code = isolate->factory()->NewCode(
desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
CHECK(code->IsCode());
HeapObject* obj = HeapObject::cast(*code);
Address obj_addr = obj->address();
for (int i = 0; i < obj->Size(); i += kPointerSize) {
Object* found = isolate->FindCodeObject(obj_addr + i);
CHECK_EQ(*code, found);
}
Handle<Code> copy = isolate->factory()->NewCode(
desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
HeapObject* obj_copy = HeapObject::cast(*copy);
Object* not_right = isolate->FindCodeObject(obj_copy->address() +
obj_copy->Size() / 2);
CHECK(not_right != *code);
}
TEST(HandleNull) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
HandleScope outer_scope(isolate);
LocalContext context;
Handle<Object> n(static_cast<Object*>(nullptr), isolate);
CHECK(!n.is_null());
}
TEST(HeapObjects) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
Heap* heap = isolate->heap();
HandleScope sc(isolate);
Handle<Object> value = factory->NewNumber(1.000123);
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(1.000123, value->Number());
value = factory->NewNumber(1.0);
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(1.0, value->Number());
value = factory->NewNumberFromInt(1024);
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(1024.0, value->Number());
value = factory->NewNumberFromInt(Smi::kMinValue);
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(Smi::kMinValue, Handle<Smi>::cast(value)->value());
value = factory->NewNumberFromInt(Smi::kMaxValue);
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(Smi::kMaxValue, Handle<Smi>::cast(value)->value());
#if !defined(V8_TARGET_ARCH_64_BIT)
// TODO(lrn): We need a NumberFromIntptr function in order to test this.
value = factory->NewNumberFromInt(Smi::kMinValue - 1);
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(static_cast<double>(Smi::kMinValue - 1), value->Number());
#endif
value = factory->NewNumberFromUint(static_cast<uint32_t>(Smi::kMaxValue) + 1);
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(static_cast<double>(static_cast<uint32_t>(Smi::kMaxValue) + 1),
value->Number());
value = factory->NewNumberFromUint(static_cast<uint32_t>(1) << 31);
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(static_cast<double>(static_cast<uint32_t>(1) << 31),
value->Number());
// nan oddball checks
CHECK(factory->nan_value()->IsNumber());
CHECK(std::isnan(factory->nan_value()->Number()));
Handle<String> s = factory->NewStringFromStaticChars("fisk hest ");
CHECK(s->IsString());
CHECK_EQ(10, s->length());
Handle<String> object_string = Handle<String>::cast(factory->Object_string());
Handle<JSGlobalObject> global(
CcTest::i_isolate()->context()->global_object());
CHECK(Just(true) == JSReceiver::HasOwnProperty(global, object_string));
// Check ToString for oddballs
CheckOddball(isolate, heap->true_value(), "true");
CheckOddball(isolate, heap->false_value(), "false");
CheckOddball(isolate, heap->null_value(), "null");
CheckOddball(isolate, heap->undefined_value(), "undefined");
// Check ToString for Smis
CheckSmi(isolate, 0, "0");
CheckSmi(isolate, 42, "42");
CheckSmi(isolate, -42, "-42");
// Check ToString for Numbers
CheckNumber(isolate, 1.1, "1.1");
CheckFindCodeObject(isolate);
}
template <typename T, typename LANE_TYPE, int LANES>
static void CheckSimdValue(T* value, LANE_TYPE lane_values[LANES],
LANE_TYPE other_value) {
// Check against lane_values, and check that all lanes can be set to
// other_value without disturbing the other lanes.
for (int i = 0; i < LANES; i++) {
CHECK_EQ(lane_values[i], value->get_lane(i));
}
for (int i = 0; i < LANES; i++) {
value->set_lane(i, other_value); // change the value
for (int j = 0; j < LANES; j++) {
if (i != j)
CHECK_EQ(lane_values[j], value->get_lane(j));
else
CHECK_EQ(other_value, value->get_lane(j));
}
value->set_lane(i, lane_values[i]); // restore the lane
}
CHECK(value->BooleanValue()); // SIMD values are 'true'.
}
TEST(SimdObjects) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
HandleScope sc(isolate);
// Float32x4
{
float lanes[4] = {1, 2, 3, 4};
float quiet_NaN = std::numeric_limits<float>::quiet_NaN();
float signaling_NaN = std::numeric_limits<float>::signaling_NaN();
Handle<Float32x4> value = factory->NewFloat32x4(lanes);
CHECK(value->IsFloat32x4());
CheckSimdValue<Float32x4, float, 4>(*value, lanes, 3.14f);
// Check special lane values.
value->set_lane(1, -0.0);
CHECK_EQ(-0.0f, value->get_lane(1));
CHECK(std::signbit(value->get_lane(1))); // Sign bit should be preserved.
value->set_lane(2, quiet_NaN);
CHECK(std::isnan(value->get_lane(2)));
value->set_lane(3, signaling_NaN);
CHECK(std::isnan(value->get_lane(3)));
#ifdef OBJECT_PRINT
// Check value printing.
{
value = factory->NewFloat32x4(lanes);
std::ostringstream os;
value->Float32x4Print(os);
CHECK_EQ("1, 2, 3, 4", os.str());
}
{
float special_lanes[4] = {0, -0.0, quiet_NaN, signaling_NaN};
value = factory->NewFloat32x4(special_lanes);
std::ostringstream os;
value->Float32x4Print(os);
// Value printing doesn't preserve signed zeroes.
CHECK_EQ("0, 0, NaN, NaN", os.str());
}
#endif // OBJECT_PRINT
}
// Int32x4
{
int32_t lanes[4] = {1, 2, 3, 4};
Handle<Int32x4> value = factory->NewInt32x4(lanes);
CHECK(value->IsInt32x4());
CheckSimdValue<Int32x4, int32_t, 4>(*value, lanes, 3);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Int32x4Print(os);
CHECK_EQ("1, 2, 3, 4", os.str());
#endif // OBJECT_PRINT
}
// Uint32x4
{
uint32_t lanes[4] = {1, 2, 3, 4};
Handle<Uint32x4> value = factory->NewUint32x4(lanes);
CHECK(value->IsUint32x4());
CheckSimdValue<Uint32x4, uint32_t, 4>(*value, lanes, 3);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Uint32x4Print(os);
CHECK_EQ("1, 2, 3, 4", os.str());
#endif // OBJECT_PRINT
}
// Bool32x4
{
bool lanes[4] = {true, false, true, false};
Handle<Bool32x4> value = factory->NewBool32x4(lanes);
CHECK(value->IsBool32x4());
CheckSimdValue<Bool32x4, bool, 4>(*value, lanes, false);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Bool32x4Print(os);
CHECK_EQ("true, false, true, false", os.str());
#endif // OBJECT_PRINT
}
// Int16x8
{
int16_t lanes[8] = {1, 2, 3, 4, 5, 6, 7, 8};
Handle<Int16x8> value = factory->NewInt16x8(lanes);
CHECK(value->IsInt16x8());
CheckSimdValue<Int16x8, int16_t, 8>(*value, lanes, 32767);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Int16x8Print(os);
CHECK_EQ("1, 2, 3, 4, 5, 6, 7, 8", os.str());
#endif // OBJECT_PRINT
}
// Uint16x8
{
uint16_t lanes[8] = {1, 2, 3, 4, 5, 6, 7, 8};
Handle<Uint16x8> value = factory->NewUint16x8(lanes);
CHECK(value->IsUint16x8());
CheckSimdValue<Uint16x8, uint16_t, 8>(*value, lanes, 32767);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Uint16x8Print(os);
CHECK_EQ("1, 2, 3, 4, 5, 6, 7, 8", os.str());
#endif // OBJECT_PRINT
}
// Bool16x8
{
bool lanes[8] = {true, false, true, false, true, false, true, false};
Handle<Bool16x8> value = factory->NewBool16x8(lanes);
CHECK(value->IsBool16x8());
CheckSimdValue<Bool16x8, bool, 8>(*value, lanes, false);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Bool16x8Print(os);
CHECK_EQ("true, false, true, false, true, false, true, false", os.str());
#endif // OBJECT_PRINT
}
// Int8x16
{
int8_t lanes[16] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
Handle<Int8x16> value = factory->NewInt8x16(lanes);
CHECK(value->IsInt8x16());
CheckSimdValue<Int8x16, int8_t, 16>(*value, lanes, 127);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Int8x16Print(os);
CHECK_EQ("1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16", os.str());
#endif // OBJECT_PRINT
}
// Uint8x16
{
uint8_t lanes[16] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
Handle<Uint8x16> value = factory->NewUint8x16(lanes);
CHECK(value->IsUint8x16());
CheckSimdValue<Uint8x16, uint8_t, 16>(*value, lanes, 127);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Uint8x16Print(os);
CHECK_EQ("1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16", os.str());
#endif // OBJECT_PRINT
}
// Bool8x16
{
bool lanes[16] = {true, false, true, false, true, false, true, false,
true, false, true, false, true, false, true, false};
Handle<Bool8x16> value = factory->NewBool8x16(lanes);
CHECK(value->IsBool8x16());
CheckSimdValue<Bool8x16, bool, 16>(*value, lanes, false);
#ifdef OBJECT_PRINT
std::ostringstream os;
value->Bool8x16Print(os);
CHECK_EQ(
"true, false, true, false, true, false, true, false, true, false, "
"true, false, true, false, true, false",
os.str());
#endif // OBJECT_PRINT
}
}
TEST(Tagging) {
CcTest::InitializeVM();
int request = 24;
CHECK_EQ(request, static_cast<int>(OBJECT_POINTER_ALIGN(request)));
CHECK(Smi::FromInt(42)->IsSmi());
CHECK(Smi::FromInt(Smi::kMinValue)->IsSmi());
CHECK(Smi::FromInt(Smi::kMaxValue)->IsSmi());
}
TEST(GarbageCollection) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
HandleScope sc(isolate);
// Check GC.
heap->CollectGarbage(NEW_SPACE);
Handle<JSGlobalObject> global(
CcTest::i_isolate()->context()->global_object());
Handle<String> name = factory->InternalizeUtf8String("theFunction");
Handle<String> prop_name = factory->InternalizeUtf8String("theSlot");
Handle<String> prop_namex = factory->InternalizeUtf8String("theSlotx");
Handle<String> obj_name = factory->InternalizeUtf8String("theObject");
Handle<Smi> twenty_three(Smi::FromInt(23), isolate);
Handle<Smi> twenty_four(Smi::FromInt(24), isolate);
{
HandleScope inner_scope(isolate);
// Allocate a function and keep it in global object's property.
Handle<JSFunction> function = factory->NewFunction(name);
JSReceiver::SetProperty(global, name, function, SLOPPY).Check();
// Allocate an object. Unrooted after leaving the scope.
Handle<JSObject> obj = factory->NewJSObject(function);
JSReceiver::SetProperty(obj, prop_name, twenty_three, SLOPPY).Check();
JSReceiver::SetProperty(obj, prop_namex, twenty_four, SLOPPY).Check();
CHECK_EQ(Smi::FromInt(23),
*Object::GetProperty(obj, prop_name).ToHandleChecked());
CHECK_EQ(Smi::FromInt(24),
*Object::GetProperty(obj, prop_namex).ToHandleChecked());
}
heap->CollectGarbage(NEW_SPACE);
// Function should be alive.
CHECK(Just(true) == JSReceiver::HasOwnProperty(global, name));
// Check function is retained.
Handle<Object> func_value =
Object::GetProperty(global, name).ToHandleChecked();
CHECK(func_value->IsJSFunction());
Handle<JSFunction> function = Handle<JSFunction>::cast(func_value);
{
HandleScope inner_scope(isolate);
// Allocate another object, make it reachable from global.
Handle<JSObject> obj = factory->NewJSObject(function);
JSReceiver::SetProperty(global, obj_name, obj, SLOPPY).Check();
JSReceiver::SetProperty(obj, prop_name, twenty_three, SLOPPY).Check();
}
// After gc, it should survive.
heap->CollectGarbage(NEW_SPACE);
CHECK(Just(true) == JSReceiver::HasOwnProperty(global, obj_name));
Handle<Object> obj =
Object::GetProperty(global, obj_name).ToHandleChecked();
CHECK(obj->IsJSObject());
CHECK_EQ(Smi::FromInt(23),
*Object::GetProperty(obj, prop_name).ToHandleChecked());
}
static void VerifyStringAllocation(Isolate* isolate, const char* string) {
HandleScope scope(isolate);
Handle<String> s = isolate->factory()->NewStringFromUtf8(
CStrVector(string)).ToHandleChecked();
CHECK_EQ(StrLength(string), s->length());
for (int index = 0; index < s->length(); index++) {
CHECK_EQ(static_cast<uint16_t>(string[index]), s->Get(index));
}
}
TEST(String) {
CcTest::InitializeVM();
Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
VerifyStringAllocation(isolate, "a");
VerifyStringAllocation(isolate, "ab");
VerifyStringAllocation(isolate, "abc");
VerifyStringAllocation(isolate, "abcd");
VerifyStringAllocation(isolate, "fiskerdrengen er paa havet");
}
TEST(LocalHandles) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
const char* name = "Kasper the spunky";
Handle<String> string = factory->NewStringFromAsciiChecked(name);
CHECK_EQ(StrLength(name), string->length());
}
TEST(GlobalHandles) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
GlobalHandles* global_handles = isolate->global_handles();
Handle<Object> h1;
Handle<Object> h2;
Handle<Object> h3;
Handle<Object> h4;
{
HandleScope scope(isolate);
Handle<Object> i = factory->NewStringFromStaticChars("fisk");
Handle<Object> u = factory->NewNumber(1.12344);
h1 = global_handles->Create(*i);
h2 = global_handles->Create(*u);
h3 = global_handles->Create(*i);
h4 = global_handles->Create(*u);
}
// after gc, it should survive
heap->CollectGarbage(NEW_SPACE);
CHECK((*h1)->IsString());
CHECK((*h2)->IsHeapNumber());
CHECK((*h3)->IsString());
CHECK((*h4)->IsHeapNumber());
CHECK_EQ(*h3, *h1);
GlobalHandles::Destroy(h1.location());
GlobalHandles::Destroy(h3.location());
CHECK_EQ(*h4, *h2);
GlobalHandles::Destroy(h2.location());
GlobalHandles::Destroy(h4.location());
}
static bool WeakPointerCleared = false;
static void TestWeakGlobalHandleCallback(
const v8::WeakCallbackData<v8::Value, void>& data) {
std::pair<v8::Persistent<v8::Value>*, int>* p =
reinterpret_cast<std::pair<v8::Persistent<v8::Value>*, int>*>(
data.GetParameter());
if (p->second == 1234) WeakPointerCleared = true;
p->first->Reset();
}
TEST(WeakGlobalHandlesScavenge) {
i::FLAG_stress_compaction = false;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
GlobalHandles* global_handles = isolate->global_handles();
WeakPointerCleared = false;
Handle<Object> h1;
Handle<Object> h2;
{
HandleScope scope(isolate);
Handle<Object> i = factory->NewStringFromStaticChars("fisk");
Handle<Object> u = factory->NewNumber(1.12344);
h1 = global_handles->Create(*i);
h2 = global_handles->Create(*u);
}
std::pair<Handle<Object>*, int> handle_and_id(&h2, 1234);
GlobalHandles::MakeWeak(h2.location(),
reinterpret_cast<void*>(&handle_and_id),
&TestWeakGlobalHandleCallback);
// Scavenge treats weak pointers as normal roots.
heap->CollectGarbage(NEW_SPACE);
CHECK((*h1)->IsString());
CHECK((*h2)->IsHeapNumber());
CHECK(!WeakPointerCleared);
CHECK(!global_handles->IsNearDeath(h2.location()));
CHECK(!global_handles->IsNearDeath(h1.location()));
GlobalHandles::Destroy(h1.location());
GlobalHandles::Destroy(h2.location());
}
TEST(WeakGlobalHandlesMark) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
GlobalHandles* global_handles = isolate->global_handles();
WeakPointerCleared = false;
Handle<Object> h1;
Handle<Object> h2;
{
HandleScope scope(isolate);
Handle<Object> i = factory->NewStringFromStaticChars("fisk");
Handle<Object> u = factory->NewNumber(1.12344);
h1 = global_handles->Create(*i);
h2 = global_handles->Create(*u);
}
// Make sure the objects are promoted.
heap->CollectGarbage(OLD_SPACE);
heap->CollectGarbage(NEW_SPACE);
CHECK(!heap->InNewSpace(*h1) && !heap->InNewSpace(*h2));
std::pair<Handle<Object>*, int> handle_and_id(&h2, 1234);
GlobalHandles::MakeWeak(h2.location(),
reinterpret_cast<void*>(&handle_and_id),
&TestWeakGlobalHandleCallback);
CHECK(!GlobalHandles::IsNearDeath(h1.location()));
CHECK(!GlobalHandles::IsNearDeath(h2.location()));
// Incremental marking potentially marked handles before they turned weak.
heap->CollectAllGarbage();
CHECK((*h1)->IsString());
CHECK(WeakPointerCleared);
CHECK(!GlobalHandles::IsNearDeath(h1.location()));
GlobalHandles::Destroy(h1.location());
}
TEST(DeleteWeakGlobalHandle) {
i::FLAG_stress_compaction = false;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
GlobalHandles* global_handles = isolate->global_handles();
WeakPointerCleared = false;
Handle<Object> h;
{
HandleScope scope(isolate);
Handle<Object> i = factory->NewStringFromStaticChars("fisk");
h = global_handles->Create(*i);
}
std::pair<Handle<Object>*, int> handle_and_id(&h, 1234);
GlobalHandles::MakeWeak(h.location(),
reinterpret_cast<void*>(&handle_and_id),
&TestWeakGlobalHandleCallback);
// Scanvenge does not recognize weak reference.
heap->CollectGarbage(NEW_SPACE);
CHECK(!WeakPointerCleared);
// Mark-compact treats weak reference properly.
heap->CollectGarbage(OLD_SPACE);
CHECK(WeakPointerCleared);
}
TEST(BytecodeArray) {
static const uint8_t kRawBytes[] = {0xc3, 0x7e, 0xa5, 0x5a};
static const int kRawBytesSize = sizeof(kRawBytes);
static const int kFrameSize = 32;
static const int kParameterCount = 2;
i::FLAG_manual_evacuation_candidates_selection = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
HandleScope scope(isolate);
SimulateFullSpace(heap->old_space());
Handle<FixedArray> constant_pool = factory->NewFixedArray(5, TENURED);
for (int i = 0; i < 5; i++) {
Handle<Object> number = factory->NewHeapNumber(i);
constant_pool->set(i, *number);
}
// Allocate and initialize BytecodeArray
Handle<BytecodeArray> array = factory->NewBytecodeArray(
kRawBytesSize, kRawBytes, kFrameSize, kParameterCount, constant_pool);
CHECK(array->IsBytecodeArray());
CHECK_EQ(array->length(), (int)sizeof(kRawBytes));
CHECK_EQ(array->frame_size(), kFrameSize);
CHECK_EQ(array->parameter_count(), kParameterCount);
CHECK_EQ(array->constant_pool(), *constant_pool);
CHECK_LE(array->address(), array->GetFirstBytecodeAddress());
CHECK_GE(array->address() + array->BytecodeArraySize(),
array->GetFirstBytecodeAddress() + array->length());
for (int i = 0; i < kRawBytesSize; i++) {
CHECK_EQ(array->GetFirstBytecodeAddress()[i], kRawBytes[i]);
CHECK_EQ(array->get(i), kRawBytes[i]);
}
FixedArray* old_constant_pool_address = *constant_pool;
// Perform a full garbage collection and force the constant pool to be on an
// evacuation candidate.
Page* evac_page = Page::FromAddress(constant_pool->address());
evac_page->SetFlag(MemoryChunk::FORCE_EVACUATION_CANDIDATE_FOR_TESTING);
heap->CollectAllGarbage();
// BytecodeArray should survive.
CHECK_EQ(array->length(), kRawBytesSize);
CHECK_EQ(array->frame_size(), kFrameSize);
for (int i = 0; i < kRawBytesSize; i++) {
CHECK_EQ(array->get(i), kRawBytes[i]);
CHECK_EQ(array->GetFirstBytecodeAddress()[i], kRawBytes[i]);
}
// Constant pool should have been migrated.
CHECK_EQ(array->constant_pool(), *constant_pool);
CHECK_NE(array->constant_pool(), old_constant_pool_address);
}
static const char* not_so_random_string_table[] = {
"abstract",
"boolean",
"break",
"byte",
"case",
"catch",
"char",
"class",
"const",
"continue",
"debugger",
"default",
"delete",
"do",
"double",
"else",
"enum",
"export",
"extends",
"false",
"final",
"finally",
"float",
"for",
"function",
"goto",
"if",
"implements",
"import",
"in",
"instanceof",
"int",
"interface",
"long",
"native",
"new",
"null",
"package",
"private",
"protected",
"public",
"return",
"short",
"static",
"super",
"switch",
"synchronized",
"this",
"throw",
"throws",
"transient",
"true",
"try",
"typeof",
"var",
"void",
"volatile",
"while",
"with",
0
};
static void CheckInternalizedStrings(const char** strings) {
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
for (const char* string = *strings; *strings != 0; string = *strings++) {
HandleScope scope(isolate);
Handle<String> a =
isolate->factory()->InternalizeUtf8String(CStrVector(string));
// InternalizeUtf8String may return a failure if a GC is needed.
CHECK(a->IsInternalizedString());
Handle<String> b = factory->InternalizeUtf8String(string);
CHECK_EQ(*b, *a);
CHECK(b->IsUtf8EqualTo(CStrVector(string)));
b = isolate->factory()->InternalizeUtf8String(CStrVector(string));
CHECK_EQ(*b, *a);
CHECK(b->IsUtf8EqualTo(CStrVector(string)));
}
}
TEST(StringTable) {
CcTest::InitializeVM();
v8::HandleScope sc(CcTest::isolate());
CheckInternalizedStrings(not_so_random_string_table);
CheckInternalizedStrings(not_so_random_string_table);
}
TEST(FunctionAllocation) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope sc(CcTest::isolate());
Handle<String> name = factory->InternalizeUtf8String("theFunction");
Handle<JSFunction> function = factory->NewFunction(name);
Handle<Smi> twenty_three(Smi::FromInt(23), isolate);
Handle<Smi> twenty_four(Smi::FromInt(24), isolate);
Handle<String> prop_name = factory->InternalizeUtf8String("theSlot");
Handle<JSObject> obj = factory->NewJSObject(function);
JSReceiver::SetProperty(obj, prop_name, twenty_three, SLOPPY).Check();
CHECK_EQ(Smi::FromInt(23),
*Object::GetProperty(obj, prop_name).ToHandleChecked());
// Check that we can add properties to function objects.
JSReceiver::SetProperty(function, prop_name, twenty_four, SLOPPY).Check();
CHECK_EQ(Smi::FromInt(24),
*Object::GetProperty(function, prop_name).ToHandleChecked());
}
TEST(ObjectProperties) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope sc(CcTest::isolate());
Handle<String> object_string(String::cast(CcTest::heap()->Object_string()));
Handle<Object> object = Object::GetProperty(
CcTest::i_isolate()->global_object(), object_string).ToHandleChecked();
Handle<JSFunction> constructor = Handle<JSFunction>::cast(object);
Handle<JSObject> obj = factory->NewJSObject(constructor);
Handle<String> first = factory->InternalizeUtf8String("first");
Handle<String> second = factory->InternalizeUtf8String("second");
Handle<Smi> one(Smi::FromInt(1), isolate);
Handle<Smi> two(Smi::FromInt(2), isolate);
// check for empty
CHECK(Just(false) == JSReceiver::HasOwnProperty(obj, first));
// add first
JSReceiver::SetProperty(obj, first, one, SLOPPY).Check();
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, first));
// delete first
CHECK(Just(true) == JSReceiver::DeleteProperty(obj, first, SLOPPY));
CHECK(Just(false) == JSReceiver::HasOwnProperty(obj, first));
// add first and then second
JSReceiver::SetProperty(obj, first, one, SLOPPY).Check();
JSReceiver::SetProperty(obj, second, two, SLOPPY).Check();
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, first));
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, second));
// delete first and then second
CHECK(Just(true) == JSReceiver::DeleteProperty(obj, first, SLOPPY));
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, second));
CHECK(Just(true) == JSReceiver::DeleteProperty(obj, second, SLOPPY));
CHECK(Just(false) == JSReceiver::HasOwnProperty(obj, first));
CHECK(Just(false) == JSReceiver::HasOwnProperty(obj, second));
// add first and then second
JSReceiver::SetProperty(obj, first, one, SLOPPY).Check();
JSReceiver::SetProperty(obj, second, two, SLOPPY).Check();
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, first));
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, second));
// delete second and then first
CHECK(Just(true) == JSReceiver::DeleteProperty(obj, second, SLOPPY));
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, first));
CHECK(Just(true) == JSReceiver::DeleteProperty(obj, first, SLOPPY));
CHECK(Just(false) == JSReceiver::HasOwnProperty(obj, first));
CHECK(Just(false) == JSReceiver::HasOwnProperty(obj, second));
// check string and internalized string match
const char* string1 = "fisk";
Handle<String> s1 = factory->NewStringFromAsciiChecked(string1);
JSReceiver::SetProperty(obj, s1, one, SLOPPY).Check();
Handle<String> s1_string = factory->InternalizeUtf8String(string1);
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, s1_string));
// check internalized string and string match
const char* string2 = "fugl";
Handle<String> s2_string = factory->InternalizeUtf8String(string2);
JSReceiver::SetProperty(obj, s2_string, one, SLOPPY).Check();
Handle<String> s2 = factory->NewStringFromAsciiChecked(string2);
CHECK(Just(true) == JSReceiver::HasOwnProperty(obj, s2));
}
TEST(JSObjectMaps) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope sc(CcTest::isolate());
Handle<String> name = factory->InternalizeUtf8String("theFunction");
Handle<JSFunction> function = factory->NewFunction(name);
Handle<String> prop_name = factory->InternalizeUtf8String("theSlot");
Handle<JSObject> obj = factory->NewJSObject(function);
Handle<Map> initial_map(function->initial_map());
// Set a propery
Handle<Smi> twenty_three(Smi::FromInt(23), isolate);
JSReceiver::SetProperty(obj, prop_name, twenty_three, SLOPPY).Check();
CHECK_EQ(Smi::FromInt(23),
*Object::GetProperty(obj, prop_name).ToHandleChecked());
// Check the map has changed
CHECK(*initial_map != obj->map());
}
TEST(JSArray) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope sc(CcTest::isolate());
Handle<String> name = factory->InternalizeUtf8String("Array");
Handle<Object> fun_obj = Object::GetProperty(
CcTest::i_isolate()->global_object(), name).ToHandleChecked();
Handle<JSFunction> function = Handle<JSFunction>::cast(fun_obj);
// Allocate the object.
Handle<Object> element;
Handle<JSObject> object = factory->NewJSObject(function);
Handle<JSArray> array = Handle<JSArray>::cast(object);
// We just initialized the VM, no heap allocation failure yet.
JSArray::Initialize(array, 0);
// Set array length to 0.
JSArray::SetLength(array, 0);
CHECK_EQ(Smi::FromInt(0), array->length());
// Must be in fast mode.
CHECK(array->HasFastSmiOrObjectElements());
// array[length] = name.
JSReceiver::SetElement(isolate, array, 0, name, SLOPPY).Check();
CHECK_EQ(Smi::FromInt(1), array->length());
element = i::Object::GetElement(isolate, array, 0).ToHandleChecked();
CHECK_EQ(*element, *name);
// Set array length with larger than smi value.
JSArray::SetLength(array, static_cast<uint32_t>(Smi::kMaxValue) + 1);
uint32_t int_length = 0;
CHECK(array->length()->ToArrayIndex(&int_length));
CHECK_EQ(static_cast<uint32_t>(Smi::kMaxValue) + 1, int_length);
CHECK(array->HasDictionaryElements()); // Must be in slow mode.
// array[length] = name.
JSReceiver::SetElement(isolate, array, int_length, name, SLOPPY).Check();
uint32_t new_int_length = 0;
CHECK(array->length()->ToArrayIndex(&new_int_length));
CHECK_EQ(static_cast<double>(int_length), new_int_length - 1);
element = Object::GetElement(isolate, array, int_length).ToHandleChecked();
CHECK_EQ(*element, *name);
element = Object::GetElement(isolate, array, 0).ToHandleChecked();
CHECK_EQ(*element, *name);
}
TEST(JSObjectCopy) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope sc(CcTest::isolate());
Handle<String> object_string(String::cast(CcTest::heap()->Object_string()));
Handle<Object> object = Object::GetProperty(
CcTest::i_isolate()->global_object(), object_string).ToHandleChecked();
Handle<JSFunction> constructor = Handle<JSFunction>::cast(object);
Handle<JSObject> obj = factory->NewJSObject(constructor);
Handle<String> first = factory->InternalizeUtf8String("first");
Handle<String> second = factory->InternalizeUtf8String("second");
Handle<Smi> one(Smi::FromInt(1), isolate);
Handle<Smi> two(Smi::FromInt(2), isolate);
JSReceiver::SetProperty(obj, first, one, SLOPPY).Check();
JSReceiver::SetProperty(obj, second, two, SLOPPY).Check();
JSReceiver::SetElement(isolate, obj, 0, first, SLOPPY).Check();
JSReceiver::SetElement(isolate, obj, 1, second, SLOPPY).Check();
// Make the clone.
Handle<Object> value1, value2;
Handle<JSObject> clone = factory->CopyJSObject(obj);
CHECK(!clone.is_identical_to(obj));
value1 = Object::GetElement(isolate, obj, 0).ToHandleChecked();
value2 = Object::GetElement(isolate, clone, 0).ToHandleChecked();
CHECK_EQ(*value1, *value2);
value1 = Object::GetElement(isolate, obj, 1).ToHandleChecked();
value2 = Object::GetElement(isolate, clone, 1).ToHandleChecked();
CHECK_EQ(*value1, *value2);
value1 = Object::GetProperty(obj, first).ToHandleChecked();
value2 = Object::GetProperty(clone, first).ToHandleChecked();
CHECK_EQ(*value1, *value2);
value1 = Object::GetProperty(obj, second).ToHandleChecked();
value2 = Object::GetProperty(clone, second).ToHandleChecked();
CHECK_EQ(*value1, *value2);
// Flip the values.
JSReceiver::SetProperty(clone, first, two, SLOPPY).Check();
JSReceiver::SetProperty(clone, second, one, SLOPPY).Check();
JSReceiver::SetElement(isolate, clone, 0, second, SLOPPY).Check();
JSReceiver::SetElement(isolate, clone, 1, first, SLOPPY).Check();
value1 = Object::GetElement(isolate, obj, 1).ToHandleChecked();
value2 = Object::GetElement(isolate, clone, 0).ToHandleChecked();
CHECK_EQ(*value1, *value2);
value1 = Object::GetElement(isolate, obj, 0).ToHandleChecked();
value2 = Object::GetElement(isolate, clone, 1).ToHandleChecked();
CHECK_EQ(*value1, *value2);
value1 = Object::GetProperty(obj, second).ToHandleChecked();
value2 = Object::GetProperty(clone, first).ToHandleChecked();
CHECK_EQ(*value1, *value2);
value1 = Object::GetProperty(obj, first).ToHandleChecked();
value2 = Object::GetProperty(clone, second).ToHandleChecked();
CHECK_EQ(*value1, *value2);
}
TEST(StringAllocation) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
const unsigned char chars[] = { 0xe5, 0xa4, 0xa7 };
for (int length = 0; length < 100; length++) {
v8::HandleScope scope(CcTest::isolate());
char* non_one_byte = NewArray<char>(3 * length + 1);
char* one_byte = NewArray<char>(length + 1);
non_one_byte[3 * length] = 0;
one_byte[length] = 0;
for (int i = 0; i < length; i++) {
one_byte[i] = 'a';
non_one_byte[3 * i] = chars[0];
non_one_byte[3 * i + 1] = chars[1];
non_one_byte[3 * i + 2] = chars[2];
}
Handle<String> non_one_byte_sym = factory->InternalizeUtf8String(
Vector<const char>(non_one_byte, 3 * length));
CHECK_EQ(length, non_one_byte_sym->length());
Handle<String> one_byte_sym =
factory->InternalizeOneByteString(OneByteVector(one_byte, length));
CHECK_EQ(length, one_byte_sym->length());
Handle<String> non_one_byte_str =
factory->NewStringFromUtf8(Vector<const char>(non_one_byte, 3 * length))
.ToHandleChecked();
non_one_byte_str->Hash();
CHECK_EQ(length, non_one_byte_str->length());
Handle<String> one_byte_str =
factory->NewStringFromUtf8(Vector<const char>(one_byte, length))
.ToHandleChecked();
one_byte_str->Hash();
CHECK_EQ(length, one_byte_str->length());
DeleteArray(non_one_byte);
DeleteArray(one_byte);
}
}
static int ObjectsFoundInHeap(Heap* heap, Handle<Object> objs[], int size) {
// Count the number of objects found in the heap.
int found_count = 0;
HeapIterator iterator(heap);
for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) {
for (int i = 0; i < size; i++) {
if (*objs[i] == obj) {
found_count++;
}
}
}
return found_count;
}
TEST(Iteration) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
// Array of objects to scan haep for.
const int objs_count = 6;
Handle<Object> objs[objs_count];
int next_objs_index = 0;
// Allocate a JS array to OLD_SPACE and NEW_SPACE
objs[next_objs_index++] = factory->NewJSArray(10);
objs[next_objs_index++] =
factory->NewJSArray(10, FAST_HOLEY_ELEMENTS, TENURED);
// Allocate a small string to OLD_DATA_SPACE and NEW_SPACE
objs[next_objs_index++] = factory->NewStringFromStaticChars("abcdefghij");
objs[next_objs_index++] =
factory->NewStringFromStaticChars("abcdefghij", TENURED);
// Allocate a large string (for large object space).
int large_size = Page::kMaxRegularHeapObjectSize + 1;
char* str = new char[large_size];
for (int i = 0; i < large_size - 1; ++i) str[i] = 'a';
str[large_size - 1] = '\0';
objs[next_objs_index++] = factory->NewStringFromAsciiChecked(str, TENURED);
delete[] str;
// Add a Map object to look for.
objs[next_objs_index++] = Handle<Map>(HeapObject::cast(*objs[0])->map());
CHECK_EQ(objs_count, next_objs_index);
CHECK_EQ(objs_count, ObjectsFoundInHeap(CcTest::heap(), objs, objs_count));
}
UNINITIALIZED_TEST(TestCodeFlushing) {
// If we do not flush code this test is invalid.
if (!FLAG_flush_code) return;
i::FLAG_allow_natives_syntax = true;
i::FLAG_optimize_for_size = false;
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(create_params);
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
isolate->Enter();
Factory* factory = i_isolate->factory();
{
v8::HandleScope scope(isolate);
v8::Context::New(isolate)->Enter();
const char* source =
"function foo() {"
" var x = 42;"
" var y = 42;"
" var z = x + y;"
"};"
"foo()";
Handle<String> foo_name = factory->InternalizeUtf8String("foo");
// This compile will add the code to the compilation cache.
{
v8::HandleScope scope(isolate);
CompileRun(source);
}
// Check function is compiled.
Handle<Object> func_value = Object::GetProperty(i_isolate->global_object(),
foo_name).ToHandleChecked();
CHECK(func_value->IsJSFunction());
Handle<JSFunction> function = Handle<JSFunction>::cast(func_value);
CHECK(function->shared()->is_compiled());
// The code will survive at least two GCs.
i_isolate->heap()->CollectAllGarbage();
i_isolate->heap()->CollectAllGarbage();
CHECK(function->shared()->is_compiled());
// Simulate several GCs that use full marking.
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
i_isolate->heap()->CollectAllGarbage();
}
// foo should no longer be in the compilation cache
CHECK(!function->shared()->is_compiled() || function->IsOptimized());
CHECK(!function->is_compiled() || function->IsOptimized());
// Call foo to get it recompiled.
CompileRun("foo()");
CHECK(function->shared()->is_compiled());
CHECK(function->is_compiled());
}
isolate->Exit();
isolate->Dispose();
}
TEST(TestCodeFlushingPreAged) {
// If we do not flush code this test is invalid.
if (!FLAG_flush_code) return;
i::FLAG_allow_natives_syntax = true;
i::FLAG_optimize_for_size = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
const char* source = "function foo() {"
" var x = 42;"
" var y = 42;"
" var z = x + y;"
"};"
"foo()";
Handle<String> foo_name = factory->InternalizeUtf8String("foo");
// Compile foo, but don't run it.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun(source);
}
// Check function is compiled.
Handle<Object> func_value =
Object::GetProperty(isolate->global_object(), foo_name).ToHandleChecked();
CHECK(func_value->IsJSFunction());
Handle<JSFunction> function = Handle<JSFunction>::cast(func_value);
CHECK(function->shared()->is_compiled());
// The code has been run so will survive at least one GC.
CcTest::heap()->CollectAllGarbage();
CHECK(function->shared()->is_compiled());
// The code was only run once, so it should be pre-aged and collected on the
// next GC.
CcTest::heap()->CollectAllGarbage();
CHECK(!function->shared()->is_compiled() || function->IsOptimized());
// Execute the function again twice, and ensure it is reset to the young age.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun("foo();"
"foo();");
}
// The code will survive at least two GC now that it is young again.
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CHECK(function->shared()->is_compiled());
// Simulate several GCs that use full marking.
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
CcTest::heap()->CollectAllGarbage();
}
// foo should no longer be in the compilation cache
CHECK(!function->shared()->is_compiled() || function->IsOptimized());
CHECK(!function->is_compiled() || function->IsOptimized());
// Call foo to get it recompiled.
CompileRun("foo()");
CHECK(function->shared()->is_compiled());
CHECK(function->is_compiled());
}
TEST(TestCodeFlushingIncremental) {
// If we do not flush code this test is invalid.
if (!FLAG_flush_code) return;
i::FLAG_allow_natives_syntax = true;
i::FLAG_optimize_for_size = false;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
const char* source = "function foo() {"
" var x = 42;"
" var y = 42;"
" var z = x + y;"
"};"
"foo()";
Handle<String> foo_name = factory->InternalizeUtf8String("foo");
// This compile will add the code to the compilation cache.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun(source);
}
// Check function is compiled.
Handle<Object> func_value =
Object::GetProperty(isolate->global_object(), foo_name).ToHandleChecked();
CHECK(func_value->IsJSFunction());
Handle<JSFunction> function = Handle<JSFunction>::cast(func_value);
CHECK(function->shared()->is_compiled());
// The code will survive at least two GCs.
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CHECK(function->shared()->is_compiled());
// Simulate several GCs that use incremental marking.
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
SimulateIncrementalMarking(CcTest::heap());
CcTest::heap()->CollectAllGarbage();
}
CHECK(!function->shared()->is_compiled() || function->IsOptimized());
CHECK(!function->is_compiled() || function->IsOptimized());
// This compile will compile the function again.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun("foo();");
}
// Simulate several GCs that use incremental marking but make sure
// the loop breaks once the function is enqueued as a candidate.
for (int i = 0; i < kAgingThreshold; i++) {
SimulateIncrementalMarking(CcTest::heap());
if (!function->next_function_link()->IsUndefined()) break;
CcTest::heap()->CollectAllGarbage();
}
// Force optimization while incremental marking is active and while
// the function is enqueued as a candidate.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun("%OptimizeFunctionOnNextCall(foo); foo();");
}
// Simulate one final GC to make sure the candidate queue is sane.
CcTest::heap()->CollectAllGarbage();
CHECK(function->shared()->is_compiled() || !function->IsOptimized());
CHECK(function->is_compiled() || !function->IsOptimized());
}
TEST(TestCodeFlushingIncrementalScavenge) {
// If we do not flush code this test is invalid.
if (!FLAG_flush_code) return;
i::FLAG_allow_natives_syntax = true;
i::FLAG_optimize_for_size = false;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
const char* source = "var foo = function() {"
" var x = 42;"
" var y = 42;"
" var z = x + y;"
"};"
"foo();"
"var bar = function() {"
" var x = 23;"
"};"
"bar();";
Handle<String> foo_name = factory->InternalizeUtf8String("foo");
Handle<String> bar_name = factory->InternalizeUtf8String("bar");
// Perfrom one initial GC to enable code flushing.
CcTest::heap()->CollectAllGarbage();
// This compile will add the code to the compilation cache.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun(source);
}
// Check functions are compiled.
Handle<Object> func_value =
Object::GetProperty(isolate->global_object(), foo_name).ToHandleChecked();
CHECK(func_value->IsJSFunction());
Handle<JSFunction> function = Handle<JSFunction>::cast(func_value);
CHECK(function->shared()->is_compiled());
Handle<Object> func_value2 =
Object::GetProperty(isolate->global_object(), bar_name).ToHandleChecked();
CHECK(func_value2->IsJSFunction());
Handle<JSFunction> function2 = Handle<JSFunction>::cast(func_value2);
CHECK(function2->shared()->is_compiled());
// Clear references to functions so that one of them can die.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun("foo = 0; bar = 0;");
}
// Bump the code age so that flushing is triggered while the function
// object is still located in new-space.
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
function->shared()->code()->MakeOlder(static_cast<MarkingParity>(i % 2));
function2->shared()->code()->MakeOlder(static_cast<MarkingParity>(i % 2));
}
// Simulate incremental marking so that the functions are enqueued as
// code flushing candidates. Then kill one of the functions. Finally
// perform a scavenge while incremental marking is still running.
SimulateIncrementalMarking(CcTest::heap());
*function2.location() = NULL;
CcTest::heap()->CollectGarbage(NEW_SPACE, "test scavenge while marking");
// Simulate one final GC to make sure the candidate queue is sane.
CcTest::heap()->CollectAllGarbage();
CHECK(!function->shared()->is_compiled() || function->IsOptimized());
CHECK(!function->is_compiled() || function->IsOptimized());
}
TEST(TestCodeFlushingIncrementalAbort) {
// If we do not flush code this test is invalid.
if (!FLAG_flush_code) return;
i::FLAG_allow_natives_syntax = true;
i::FLAG_optimize_for_size = false;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
Heap* heap = isolate->heap();
v8::HandleScope scope(CcTest::isolate());
const char* source = "function foo() {"
" var x = 42;"
" var y = 42;"
" var z = x + y;"
"};"
"foo()";
Handle<String> foo_name = factory->InternalizeUtf8String("foo");
// This compile will add the code to the compilation cache.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun(source);
}
// Check function is compiled.
Handle<Object> func_value =
Object::GetProperty(isolate->global_object(), foo_name).ToHandleChecked();
CHECK(func_value->IsJSFunction());
Handle<JSFunction> function = Handle<JSFunction>::cast(func_value);
CHECK(function->shared()->is_compiled());
// The code will survive at least two GCs.
heap->CollectAllGarbage();
heap->CollectAllGarbage();
CHECK(function->shared()->is_compiled());
// Bump the code age so that flushing is triggered.
const int kAgingThreshold = 6;
for (int i = 0; i < kAgingThreshold; i++) {
function->shared()->code()->MakeOlder(static_cast<MarkingParity>(i % 2));
}
// Simulate incremental marking so that the function is enqueued as
// code flushing candidate.
SimulateIncrementalMarking(heap);
// Enable the debugger and add a breakpoint while incremental marking
// is running so that incremental marking aborts and code flushing is
// disabled.
int position = 0;
Handle<Object> breakpoint_object(Smi::FromInt(0), isolate);
EnableDebugger(CcTest::isolate());
isolate->debug()->SetBreakPoint(function, breakpoint_object, &position);
isolate->debug()->ClearAllBreakPoints();
DisableDebugger(CcTest::isolate());
// Force optimization now that code flushing is disabled.
{ v8::HandleScope scope(CcTest::isolate());
CompileRun("%OptimizeFunctionOnNextCall(foo); foo();");
}
// Simulate one final GC to make sure the candidate queue is sane.
heap->CollectAllGarbage();
CHECK(function->shared()->is_compiled() || !function->IsOptimized());
CHECK(function->is_compiled() || !function->IsOptimized());
}
TEST(TestUseOfIncrementalBarrierOnCompileLazy) {
// Turn off always_opt because it interferes with running the built-in for
// the last call to g().
i::FLAG_always_opt = false;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
Heap* heap = isolate->heap();
v8::HandleScope scope(CcTest::isolate());
CompileRun(
"function make_closure(x) {"
" return function() { return x + 3 };"
"}"
"var f = make_closure(5); f();"
"var g = make_closure(5);");
// Check f is compiled.
Handle<String> f_name = factory->InternalizeUtf8String("f");
Handle<Object> f_value =
Object::GetProperty(isolate->global_object(), f_name).ToHandleChecked();
Handle<JSFunction> f_function = Handle<JSFunction>::cast(f_value);
CHECK(f_function->is_compiled());
// Check g is not compiled.
Handle<String> g_name = factory->InternalizeUtf8String("g");
Handle<Object> g_value =
Object::GetProperty(isolate->global_object(), g_name).ToHandleChecked();
Handle<JSFunction> g_function = Handle<JSFunction>::cast(g_value);
CHECK(!g_function->is_compiled());
SimulateIncrementalMarking(heap);
CompileRun("%OptimizeFunctionOnNextCall(f); f();");
// g should now have available an optimized function, unmarked by gc. The
// CompileLazy built-in will discover it and install it in the closure, and
// the incremental write barrier should be used.
CompileRun("g();");
CHECK(g_function->is_compiled());
}
TEST(CompilationCacheCachingBehavior) {
// If we do not flush code, or have the compilation cache turned off, this
// test is invalid.
if (!FLAG_flush_code || !FLAG_compilation_cache) {
return;
}
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
Heap* heap = isolate->heap();
CompilationCache* compilation_cache = isolate->compilation_cache();
LanguageMode language_mode = construct_language_mode(FLAG_use_strict);
v8::HandleScope scope(CcTest::isolate());
const char* raw_source =
"function foo() {"
" var x = 42;"
" var y = 42;"
" var z = x + y;"
"};"
"foo()";
Handle<String> source = factory->InternalizeUtf8String(raw_source);
Handle<Context> native_context = isolate->native_context();
{
v8::HandleScope scope(CcTest::isolate());
CompileRun(raw_source);
}
// The script should be in the cache now.
MaybeHandle<SharedFunctionInfo> info = compilation_cache->LookupScript(
source, Handle<Object>(), 0, 0,
v8::ScriptOriginOptions(false, true, false), native_context,
language_mode);
CHECK(!info.is_null());
// Check that the code cache entry survives at least on GC.
// (Unless --optimize-for-size, in which case it might get collected
// immediately.)
if (!FLAG_optimize_for_size) {
heap->CollectAllGarbage();
info = compilation_cache->LookupScript(
source, Handle<Object>(), 0, 0,
v8::ScriptOriginOptions(false, true, false), native_context,
language_mode);
CHECK(!info.is_null());
}
// Progress code age until it's old and ready for GC.
while (!info.ToHandleChecked()->code()->IsOld()) {
// To guarantee progress, we have to MakeOlder with different parities.
// We can't just use NO_MARKING_PARITY, since e.g. kExecutedOnceCodeAge is
// always NO_MARKING_PARITY and the code age only progresses if the parity
// is different.
info.ToHandleChecked()->code()->MakeOlder(ODD_MARKING_PARITY);
info.ToHandleChecked()->code()->MakeOlder(EVEN_MARKING_PARITY);
}
heap->CollectAllGarbage();
// Ensure code aging cleared the entry from the cache.
info = compilation_cache->LookupScript(
source, Handle<Object>(), 0, 0,
v8::ScriptOriginOptions(false, true, false), native_context,
language_mode);
CHECK(info.is_null());
}
static void OptimizeEmptyFunction(const char* name) {
HandleScope scope(CcTest::i_isolate());
EmbeddedVector<char, 256> source;
SNPrintF(source,
"function %s() { return 0; }"
"%s(); %s();"
"%%OptimizeFunctionOnNextCall(%s);"
"%s();",
name, name, name, name, name);
CompileRun(source.start());
}
// Count the number of native contexts in the weak list of native contexts.
int CountNativeContexts() {
int count = 0;
Object* object = CcTest::heap()->native_contexts_list();
while (!object->IsUndefined()) {
count++;
object = Context::cast(object)->get(Context::NEXT_CONTEXT_LINK);
}
return count;
}
// Count the number of user functions in the weak list of optimized
// functions attached to a native context.
static int CountOptimizedUserFunctions(v8::Local<v8::Context> context) {
int count = 0;
Handle<Context> icontext = v8::Utils::OpenHandle(*context);
Object* object = icontext->get(Context::OPTIMIZED_FUNCTIONS_LIST);
while (object->IsJSFunction() &&
!JSFunction::cast(object)->shared()->IsBuiltin()) {
count++;
object = JSFunction::cast(object)->next_function_link();
}
return count;
}
TEST(TestInternalWeakLists) {
FLAG_always_opt = false;
FLAG_allow_natives_syntax = true;
v8::V8::Initialize();
// Some flags turn Scavenge collections into Mark-sweep collections
// and hence are incompatible with this test case.
if (FLAG_gc_global || FLAG_stress_compaction) return;
FLAG_retain_maps_for_n_gc = 0;
static const int kNumTestContexts = 10;
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
HandleScope scope(isolate);
v8::Local<v8::Context> ctx[kNumTestContexts];
if (!isolate->use_crankshaft()) return;
CHECK_EQ(0, CountNativeContexts());
// Create a number of global contests which gets linked together.
for (int i = 0; i < kNumTestContexts; i++) {
ctx[i] = v8::Context::New(CcTest::isolate());
// Collect garbage that might have been created by one of the
// installed extensions.
isolate->compilation_cache()->Clear();
heap->CollectAllGarbage();
CHECK_EQ(i + 1, CountNativeContexts());
ctx[i]->Enter();
// Create a handle scope so no function objects get stuck in the outer
// handle scope.
HandleScope scope(isolate);
CHECK_EQ(0, CountOptimizedUserFunctions(ctx[i]));
OptimizeEmptyFunction("f1");
CHECK_EQ(1, CountOptimizedUserFunctions(ctx[i]));
OptimizeEmptyFunction("f2");
CHECK_EQ(2, CountOptimizedUserFunctions(ctx[i]));
OptimizeEmptyFunction("f3");
CHECK_EQ(3, CountOptimizedUserFunctions(ctx[i]));
OptimizeEmptyFunction("f4");
CHECK_EQ(4, CountOptimizedUserFunctions(ctx[i]));
OptimizeEmptyFunction("f5");
CHECK_EQ(5, CountOptimizedUserFunctions(ctx[i]));
// Remove function f1, and
CompileRun("f1=null");
// Scavenge treats these references as strong.
for (int j = 0; j < 10; j++) {
CcTest::heap()->CollectGarbage(NEW_SPACE);
CHECK_EQ(5, CountOptimizedUserFunctions(ctx[i]));
}
// Mark compact handles the weak references.
isolate->compilation_cache()->Clear();
heap->CollectAllGarbage();
CHECK_EQ(4, CountOptimizedUserFunctions(ctx[i]));
// Get rid of f3 and f5 in the same way.
CompileRun("f3=null");
for (int j = 0; j < 10; j++) {
CcTest::heap()->CollectGarbage(NEW_SPACE);
CHECK_EQ(4, CountOptimizedUserFunctions(ctx[i]));
}
CcTest::heap()->CollectAllGarbage();
CHECK_EQ(3, CountOptimizedUserFunctions(ctx[i]));
CompileRun("f5=null");
for (int j = 0; j < 10; j++) {
CcTest::heap()->CollectGarbage(NEW_SPACE);
CHECK_EQ(3, CountOptimizedUserFunctions(ctx[i]));
}
CcTest::heap()->CollectAllGarbage();
CHECK_EQ(2, CountOptimizedUserFunctions(ctx[i]));
ctx[i]->Exit();
}
// Force compilation cache cleanup.
CcTest::heap()->NotifyContextDisposed(true);
CcTest::heap()->CollectAllGarbage();
// Dispose the native contexts one by one.
for (int i = 0; i < kNumTestContexts; i++) {
// TODO(dcarney): is there a better way to do this?
i::Object** unsafe = reinterpret_cast<i::Object**>(*ctx[i]);
*unsafe = CcTest::heap()->undefined_value();
ctx[i].Clear();
// Scavenge treats these references as strong.
for (int j = 0; j < 10; j++) {
CcTest::heap()->CollectGarbage(i::NEW_SPACE);
CHECK_EQ(kNumTestContexts - i, CountNativeContexts());
}
// Mark compact handles the weak references.
CcTest::heap()->CollectAllGarbage();
CHECK_EQ(kNumTestContexts - i - 1, CountNativeContexts());
}
CHECK_EQ(0, CountNativeContexts());
}
// Count the number of native contexts in the weak list of native contexts
// causing a GC after the specified number of elements.
static int CountNativeContextsWithGC(Isolate* isolate, int n) {
Heap* heap = isolate->heap();
int count = 0;
Handle<Object> object(heap->native_contexts_list(), isolate);
while (!object->IsUndefined()) {
count++;
if (count == n) heap->CollectAllGarbage();
object =
Handle<Object>(Context::cast(*object)->get(Context::NEXT_CONTEXT_LINK),
isolate);
}
return count;
}
// Count the number of user functions in the weak list of optimized
// functions attached to a native context causing a GC after the
// specified number of elements.
static int CountOptimizedUserFunctionsWithGC(v8::Local<v8::Context> context,
int n) {
int count = 0;
Handle<Context> icontext = v8::Utils::OpenHandle(*context);
Isolate* isolate = icontext->GetIsolate();
Handle<Object> object(icontext->get(Context::OPTIMIZED_FUNCTIONS_LIST),
isolate);
while (object->IsJSFunction() &&
!Handle<JSFunction>::cast(object)->shared()->IsBuiltin()) {
count++;
if (count == n) isolate->heap()->CollectAllGarbage();
object = Handle<Object>(
Object::cast(JSFunction::cast(*object)->next_function_link()),
isolate);
}
return count;
}
TEST(TestInternalWeakListsTraverseWithGC) {
FLAG_always_opt = false;
FLAG_allow_natives_syntax = true;
v8::V8::Initialize();
static const int kNumTestContexts = 10;
Isolate* isolate = CcTest::i_isolate();
HandleScope scope(isolate);
v8::Local<v8::Context> ctx[kNumTestContexts];
if (!isolate->use_crankshaft()) return;
CHECK_EQ(0, CountNativeContexts());
// Create an number of contexts and check the length of the weak list both
// with and without GCs while iterating the list.
for (int i = 0; i < kNumTestContexts; i++) {
ctx[i] = v8::Context::New(CcTest::isolate());
CHECK_EQ(i + 1, CountNativeContexts());
CHECK_EQ(i + 1, CountNativeContextsWithGC(isolate, i / 2 + 1));
}
ctx[0]->Enter();
// Compile a number of functions the length of the weak list of optimized
// functions both with and without GCs while iterating the list.
CHECK_EQ(0, CountOptimizedUserFunctions(ctx[0]));
OptimizeEmptyFunction("f1");
CHECK_EQ(1, CountOptimizedUserFunctions(ctx[0]));
CHECK_EQ(1, CountOptimizedUserFunctionsWithGC(ctx[0], 1));
OptimizeEmptyFunction("f2");
CHECK_EQ(2, CountOptimizedUserFunctions(ctx[0]));
CHECK_EQ(2, CountOptimizedUserFunctionsWithGC(ctx[0], 1));
OptimizeEmptyFunction("f3");
CHECK_EQ(3, CountOptimizedUserFunctions(ctx[0]));
CHECK_EQ(3, CountOptimizedUserFunctionsWithGC(ctx[0], 1));
OptimizeEmptyFunction("f4");
CHECK_EQ(4, CountOptimizedUserFunctions(ctx[0]));
CHECK_EQ(4, CountOptimizedUserFunctionsWithGC(ctx[0], 2));
OptimizeEmptyFunction("f5");
CHECK_EQ(5, CountOptimizedUserFunctions(ctx[0]));
CHECK_EQ(5, CountOptimizedUserFunctionsWithGC(ctx[0], 4));
ctx[0]->Exit();
}
TEST(TestSizeOfRegExpCode) {
if (!FLAG_regexp_optimization) return;
v8::V8::Initialize();
Isolate* isolate = CcTest::i_isolate();
HandleScope scope(isolate);
LocalContext context;
// Adjust source below and this check to match
// RegExpImple::kRegExpTooLargeToOptimize.
CHECK_EQ(i::RegExpImpl::kRegExpTooLargeToOptimize, 20 * KB);
// Compile a regexp that is much larger if we are using regexp optimizations.
CompileRun(
"var reg_exp_source = '(?:a|bc|def|ghij|klmno|pqrstu)';"
"var half_size_reg_exp;"
"while (reg_exp_source.length < 20 * 1024) {"
" half_size_reg_exp = reg_exp_source;"
" reg_exp_source = reg_exp_source + reg_exp_source;"
"}"
// Flatten string.
"reg_exp_source.match(/f/);");
// Get initial heap size after several full GCs, which will stabilize
// the heap size and return with sweeping finished completely.
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
MarkCompactCollector* collector = CcTest::heap()->mark_compact_collector();
if (collector->sweeping_in_progress()) {
collector->EnsureSweepingCompleted();
}
int initial_size = static_cast<int>(CcTest::heap()->SizeOfObjects());
CompileRun("'foo'.match(reg_exp_source);");
CcTest::heap()->CollectAllGarbage();
int size_with_regexp = static_cast<int>(CcTest::heap()->SizeOfObjects());
CompileRun("'foo'.match(half_size_reg_exp);");
CcTest::heap()->CollectAllGarbage();
int size_with_optimized_regexp =
static_cast<int>(CcTest::heap()->SizeOfObjects());
int size_of_regexp_code = size_with_regexp - initial_size;
// On some platforms the debug-code flag causes huge amounts of regexp code
// to be emitted, breaking this test.
if (!FLAG_debug_code) {
CHECK_LE(size_of_regexp_code, 1 * MB);
}
// Small regexp is half the size, but compiles to more than twice the code
// due to the optimization steps.
CHECK_GE(size_with_optimized_regexp,
size_with_regexp + size_of_regexp_code * 2);
}
HEAP_TEST(TestSizeOfObjects) {
v8::V8::Initialize();
// Get initial heap size after several full GCs, which will stabilize
// the heap size and return with sweeping finished completely.
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
CcTest::heap()->CollectAllGarbage();
MarkCompactCollector* collector = CcTest::heap()->mark_compact_collector();
if (collector->sweeping_in_progress()) {
collector->EnsureSweepingCompleted();
}
int initial_size = static_cast<int>(CcTest::heap()->SizeOfObjects());
{
// Allocate objects on several different old-space pages so that
// concurrent sweeper threads will be busy sweeping the old space on
// subsequent GC runs.
AlwaysAllocateScope always_allocate(CcTest::i_isolate());
int filler_size = static_cast<int>(FixedArray::SizeFor(8192));
for (int i = 1; i <= 100; i++) {
CcTest::heap()->AllocateFixedArray(8192, TENURED).ToObjectChecked();
CHECK_EQ(initial_size + i * filler_size,
static_cast<int>(CcTest::heap()->SizeOfObjects()));
}
}
// The heap size should go back to initial size after a full GC, even
// though sweeping didn't finish yet.
CcTest::heap()->CollectAllGarbage();
// Normally sweeping would not be complete here, but no guarantees.
CHECK_EQ(initial_size, static_cast<int>(CcTest::heap()->SizeOfObjects()));
// Waiting for sweeper threads should not change heap size.
if (collector->sweeping_in_progress()) {
collector->EnsureSweepingCompleted();
}
CHECK_EQ(initial_size, static_cast<int>(CcTest::heap()->SizeOfObjects()));
}
TEST(TestAlignmentCalculations) {
// Maximum fill amounts are consistent.
int maximum_double_misalignment = kDoubleSize - kPointerSize;
int maximum_simd128_misalignment = kSimd128Size - kPointerSize;
int max_word_fill = Heap::GetMaximumFillToAlign(kWordAligned);
CHECK_EQ(0, max_word_fill);
int max_double_fill = Heap::GetMaximumFillToAlign(kDoubleAligned);
CHECK_EQ(maximum_double_misalignment, max_double_fill);
int max_double_unaligned_fill = Heap::GetMaximumFillToAlign(kDoubleUnaligned);
CHECK_EQ(maximum_double_misalignment, max_double_unaligned_fill);
int max_simd128_unaligned_fill =
Heap::GetMaximumFillToAlign(kSimd128Unaligned);
CHECK_EQ(maximum_simd128_misalignment, max_simd128_unaligned_fill);
Address base = static_cast<Address>(NULL);
int fill = 0;
// Word alignment never requires fill.
fill = Heap::GetFillToAlign(base, kWordAligned);
CHECK_EQ(0, fill);
fill = Heap::GetFillToAlign(base + kPointerSize, kWordAligned);
CHECK_EQ(0, fill);
// No fill is required when address is double aligned.
fill = Heap::GetFillToAlign(base, kDoubleAligned);
CHECK_EQ(0, fill);
// Fill is required if address is not double aligned.
fill = Heap::GetFillToAlign(base + kPointerSize, kDoubleAligned);
CHECK_EQ(maximum_double_misalignment, fill);
// kDoubleUnaligned has the opposite fill amounts.
fill = Heap::GetFillToAlign(base, kDoubleUnaligned);
CHECK_EQ(maximum_double_misalignment, fill);
fill = Heap::GetFillToAlign(base + kPointerSize, kDoubleUnaligned);
CHECK_EQ(0, fill);
// 128 bit SIMD types have 2 or 4 possible alignments, depending on platform.
fill = Heap::GetFillToAlign(base, kSimd128Unaligned);
CHECK_EQ((3 * kPointerSize) & kSimd128AlignmentMask, fill);
fill = Heap::GetFillToAlign(base + kPointerSize, kSimd128Unaligned);
CHECK_EQ((2 * kPointerSize) & kSimd128AlignmentMask, fill);
fill = Heap::GetFillToAlign(base + 2 * kPointerSize, kSimd128Unaligned);
CHECK_EQ(kPointerSize, fill);
fill = Heap::GetFillToAlign(base + 3 * kPointerSize, kSimd128Unaligned);
CHECK_EQ(0, fill);
}
static HeapObject* NewSpaceAllocateAligned(int size,
AllocationAlignment alignment) {
Heap* heap = CcTest::heap();
AllocationResult allocation =
heap->new_space()->AllocateRawAligned(size, alignment);
HeapObject* obj = NULL;
allocation.To(&obj);
heap->CreateFillerObjectAt(obj->address(), size, ClearRecordedSlots::kNo);
return obj;
}
// Get new space allocation into the desired alignment.
static Address AlignNewSpace(AllocationAlignment alignment, int offset) {
Address* top_addr = CcTest::heap()->new_space()->allocation_top_address();
int fill = Heap::GetFillToAlign(*top_addr, alignment);
if (fill) {
NewSpaceAllocateAligned(fill + offset, kWordAligned);
}
return *top_addr;
}
TEST(TestAlignedAllocation) {
// Double misalignment is 4 on 32-bit platforms, 0 on 64-bit ones.
const intptr_t double_misalignment = kDoubleSize - kPointerSize;
Address* top_addr = CcTest::heap()->new_space()->allocation_top_address();
Address start;
HeapObject* obj;
HeapObject* filler;
if (double_misalignment) {
// Allocate a pointer sized object that must be double aligned at an
// aligned address.
start = AlignNewSpace(kDoubleAligned, 0);
obj = NewSpaceAllocateAligned(kPointerSize, kDoubleAligned);
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment));
// There is no filler.
CHECK_EQ(kPointerSize, *top_addr - start);
// Allocate a second pointer sized object that must be double aligned at an
// unaligned address.
start = AlignNewSpace(kDoubleAligned, kPointerSize);
obj = NewSpaceAllocateAligned(kPointerSize, kDoubleAligned);
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment));
// There is a filler object before the object.
filler = HeapObject::FromAddress(start);
CHECK(obj != filler && filler->IsFiller() &&
filler->Size() == kPointerSize);
CHECK_EQ(kPointerSize + double_misalignment, *top_addr - start);
// Similarly for kDoubleUnaligned.
start = AlignNewSpace(kDoubleUnaligned, 0);
obj = NewSpaceAllocateAligned(kPointerSize, kDoubleUnaligned);
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment, kPointerSize));
CHECK_EQ(kPointerSize, *top_addr - start);
start = AlignNewSpace(kDoubleUnaligned, kPointerSize);
obj = NewSpaceAllocateAligned(kPointerSize, kDoubleUnaligned);
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment, kPointerSize));
// There is a filler object before the object.
filler = HeapObject::FromAddress(start);
CHECK(obj != filler && filler->IsFiller() &&
filler->Size() == kPointerSize);
CHECK_EQ(kPointerSize + double_misalignment, *top_addr - start);
}
// Now test SIMD alignment. There are 2 or 4 possible alignments, depending
// on platform.
start = AlignNewSpace(kSimd128Unaligned, 0);
obj = NewSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There is no filler.
CHECK_EQ(kPointerSize, *top_addr - start);
start = AlignNewSpace(kSimd128Unaligned, kPointerSize);
obj = NewSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There is a filler object before the object.
filler = HeapObject::FromAddress(start);
CHECK(obj != filler && filler->IsFiller() &&
filler->Size() == kSimd128Size - kPointerSize);
CHECK_EQ(kPointerSize + kSimd128Size - kPointerSize, *top_addr - start);
if (double_misalignment) {
// Test the 2 other alignments possible on 32 bit platforms.
start = AlignNewSpace(kSimd128Unaligned, 2 * kPointerSize);
obj = NewSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There is a filler object before the object.
filler = HeapObject::FromAddress(start);
CHECK(obj != filler && filler->IsFiller() &&
filler->Size() == 2 * kPointerSize);
CHECK_EQ(kPointerSize + 2 * kPointerSize, *top_addr - start);
start = AlignNewSpace(kSimd128Unaligned, 3 * kPointerSize);
obj = NewSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There is a filler object before the object.
filler = HeapObject::FromAddress(start);
CHECK(obj != filler && filler->IsFiller() &&
filler->Size() == kPointerSize);
CHECK_EQ(kPointerSize + kPointerSize, *top_addr - start);
}
}
static HeapObject* OldSpaceAllocateAligned(int size,
AllocationAlignment alignment) {
Heap* heap = CcTest::heap();
AllocationResult allocation =
heap->old_space()->AllocateRawAligned(size, alignment);
HeapObject* obj = NULL;
allocation.To(&obj);
heap->CreateFillerObjectAt(obj->address(), size, ClearRecordedSlots::kNo);
return obj;
}
// Get old space allocation into the desired alignment.
static Address AlignOldSpace(AllocationAlignment alignment, int offset) {
Address* top_addr = CcTest::heap()->old_space()->allocation_top_address();
int fill = Heap::GetFillToAlign(*top_addr, alignment);
int allocation = fill + offset;
if (allocation) {
OldSpaceAllocateAligned(allocation, kWordAligned);
}
Address top = *top_addr;
// Now force the remaining allocation onto the free list.
CcTest::heap()->old_space()->EmptyAllocationInfo();
return top;
}
// Test the case where allocation must be done from the free list, so filler
// may precede or follow the object.
TEST(TestAlignedOverAllocation) {
// Double misalignment is 4 on 32-bit platforms, 0 on 64-bit ones.
const intptr_t double_misalignment = kDoubleSize - kPointerSize;
Address start;
HeapObject* obj;
HeapObject* filler1;
HeapObject* filler2;
if (double_misalignment) {
start = AlignOldSpace(kDoubleAligned, 0);
obj = OldSpaceAllocateAligned(kPointerSize, kDoubleAligned);
// The object is aligned, and a filler object is created after.
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment));
filler1 = HeapObject::FromAddress(start + kPointerSize);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kPointerSize);
// Try the opposite alignment case.
start = AlignOldSpace(kDoubleAligned, kPointerSize);
obj = OldSpaceAllocateAligned(kPointerSize, kDoubleAligned);
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment));
filler1 = HeapObject::FromAddress(start);
CHECK(obj != filler1);
CHECK(filler1->IsFiller());
CHECK(filler1->Size() == kPointerSize);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kPointerSize);
// Similarly for kDoubleUnaligned.
start = AlignOldSpace(kDoubleUnaligned, 0);
obj = OldSpaceAllocateAligned(kPointerSize, kDoubleUnaligned);
// The object is aligned, and a filler object is created after.
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment, kPointerSize));
filler1 = HeapObject::FromAddress(start + kPointerSize);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kPointerSize);
// Try the opposite alignment case.
start = AlignOldSpace(kDoubleUnaligned, kPointerSize);
obj = OldSpaceAllocateAligned(kPointerSize, kDoubleUnaligned);
CHECK(IsAddressAligned(obj->address(), kDoubleAlignment, kPointerSize));
filler1 = HeapObject::FromAddress(start);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kPointerSize);
}
// Now test SIMD alignment. There are 2 or 4 possible alignments, depending
// on platform.
start = AlignOldSpace(kSimd128Unaligned, 0);
obj = OldSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There is a filler object after the object.
filler1 = HeapObject::FromAddress(start + kPointerSize);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kSimd128Size - kPointerSize);
start = AlignOldSpace(kSimd128Unaligned, kPointerSize);
obj = OldSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There is a filler object before the object.
filler1 = HeapObject::FromAddress(start);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kSimd128Size - kPointerSize);
if (double_misalignment) {
// Test the 2 other alignments possible on 32 bit platforms.
start = AlignOldSpace(kSimd128Unaligned, 2 * kPointerSize);
obj = OldSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There are filler objects before and after the object.
filler1 = HeapObject::FromAddress(start);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == 2 * kPointerSize);
filler2 = HeapObject::FromAddress(start + 3 * kPointerSize);
CHECK(obj != filler2 && filler2->IsFiller() &&
filler2->Size() == kPointerSize);
start = AlignOldSpace(kSimd128Unaligned, 3 * kPointerSize);
obj = OldSpaceAllocateAligned(kPointerSize, kSimd128Unaligned);
CHECK(IsAddressAligned(obj->address(), kSimd128Alignment, kPointerSize));
// There are filler objects before and after the object.
filler1 = HeapObject::FromAddress(start);
CHECK(obj != filler1 && filler1->IsFiller() &&
filler1->Size() == kPointerSize);
filler2 = HeapObject::FromAddress(start + 2 * kPointerSize);
CHECK(obj != filler2 && filler2->IsFiller() &&
filler2->Size() == 2 * kPointerSize);
}
}
TEST(TestSizeOfObjectsVsHeapIteratorPrecision) {
CcTest::InitializeVM();
HeapIterator iterator(CcTest::heap());
intptr_t size_of_objects_1 = CcTest::heap()->SizeOfObjects();
intptr_t size_of_objects_2 = 0;
for (HeapObject* obj = iterator.next();
obj != NULL;
obj = iterator.next()) {
if (!obj->IsFreeSpace()) {
size_of_objects_2 += obj->Size();
}
}
// Delta must be within 5% of the larger result.
// TODO(gc): Tighten this up by distinguishing between byte
// arrays that are real and those that merely mark free space
// on the heap.
if (size_of_objects_1 > size_of_objects_2) {
intptr_t delta = size_of_objects_1 - size_of_objects_2;
PrintF("Heap::SizeOfObjects: %" V8PRIdPTR
", "
"Iterator: %" V8PRIdPTR
", "
"delta: %" V8PRIdPTR "\n",
size_of_objects_1, size_of_objects_2, delta);
CHECK_GT(size_of_objects_1 / 20, delta);
} else {
intptr_t delta = size_of_objects_2 - size_of_objects_1;
PrintF("Heap::SizeOfObjects: %" V8PRIdPTR
", "
"Iterator: %" V8PRIdPTR
", "
"delta: %" V8PRIdPTR "\n",
size_of_objects_1, size_of_objects_2, delta);
CHECK_GT(size_of_objects_2 / 20, delta);
}
}
static void FillUpNewSpace(NewSpace* new_space) {
// Fill up new space to the point that it is completely full. Make sure
// that the scavenger does not undo the filling.
Heap* heap = new_space->heap();
Isolate* isolate = heap->isolate();
Factory* factory = isolate->factory();
HandleScope scope(isolate);
AlwaysAllocateScope always_allocate(isolate);
intptr_t available = new_space->Capacity() - new_space->Size();
intptr_t number_of_fillers = (available / FixedArray::SizeFor(32)) - 1;
for (intptr_t i = 0; i < number_of_fillers; i++) {
CHECK(heap->InNewSpace(*factory->NewFixedArray(32, NOT_TENURED)));
}
}
TEST(GrowAndShrinkNewSpace) {
CcTest::InitializeVM();
Heap* heap = CcTest::heap();
NewSpace* new_space = heap->new_space();
if (heap->MaxSemiSpaceSize() == heap->InitialSemiSpaceSize()) {
return;
}
// Explicitly growing should double the space capacity.
intptr_t old_capacity, new_capacity;
old_capacity = new_space->TotalCapacity();
new_space->Grow();
new_capacity = new_space->TotalCapacity();
CHECK(2 * old_capacity == new_capacity);
old_capacity = new_space->TotalCapacity();
FillUpNewSpace(new_space);
new_capacity = new_space->TotalCapacity();
CHECK(old_capacity == new_capacity);
// Explicitly shrinking should not affect space capacity.
old_capacity = new_space->TotalCapacity();
new_space->Shrink();
new_capacity = new_space->TotalCapacity();
CHECK(old_capacity == new_capacity);
// Let the scavenger empty the new space.
heap->CollectGarbage(NEW_SPACE);
CHECK_LE(new_space->Size(), old_capacity);
// Explicitly shrinking should halve the space capacity.
old_capacity = new_space->TotalCapacity();
new_space->Shrink();
new_capacity = new_space->TotalCapacity();
CHECK(old_capacity == 2 * new_capacity);
// Consecutive shrinking should not affect space capacity.
old_capacity = new_space->TotalCapacity();
new_space->Shrink();
new_space->Shrink();
new_space->Shrink();
new_capacity = new_space->TotalCapacity();
CHECK(old_capacity == new_capacity);
}
TEST(CollectingAllAvailableGarbageShrinksNewSpace) {
CcTest::InitializeVM();
Heap* heap = CcTest::heap();
if (heap->MaxSemiSpaceSize() == heap->InitialSemiSpaceSize()) {
return;
}
v8::HandleScope scope(CcTest::isolate());
NewSpace* new_space = heap->new_space();
intptr_t old_capacity, new_capacity;
old_capacity = new_space->TotalCapacity();
new_space->Grow();
new_capacity = new_space->TotalCapacity();
CHECK(2 * old_capacity == new_capacity);
FillUpNewSpace(new_space);
heap->CollectAllAvailableGarbage();
new_capacity = new_space->TotalCapacity();
CHECK(old_capacity == new_capacity);
}
static int NumberOfGlobalObjects() {
int count = 0;
HeapIterator iterator(CcTest::heap());
for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) {
if (obj->IsJSGlobalObject()) count++;
}
return count;
}
// Test that we don't embed maps from foreign contexts into
// optimized code.
TEST(LeakNativeContextViaMap) {
i::FLAG_allow_natives_syntax = true;
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope outer_scope(isolate);
v8::Persistent<v8::Context> ctx1p;
v8::Persistent<v8::Context> ctx2p;
{
v8::HandleScope scope(isolate);
ctx1p.Reset(isolate, v8::Context::New(isolate));
ctx2p.Reset(isolate, v8::Context::New(isolate));
v8::Local<v8::Context>::New(isolate, ctx1p)->Enter();
}
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(2, NumberOfGlobalObjects());
{
v8::HandleScope inner_scope(isolate);
CompileRun("var v = {x: 42}");
v8::Local<v8::Context> ctx1 = v8::Local<v8::Context>::New(isolate, ctx1p);
v8::Local<v8::Context> ctx2 = v8::Local<v8::Context>::New(isolate, ctx2p);
v8::Local<v8::Value> v =
ctx1->Global()->Get(ctx1, v8_str("v")).ToLocalChecked();
ctx2->Enter();
CHECK(ctx2->Global()->Set(ctx2, v8_str("o"), v).FromJust());
v8::Local<v8::Value> res = CompileRun(
"function f() { return o.x; }"
"for (var i = 0; i < 10; ++i) f();"
"%OptimizeFunctionOnNextCall(f);"
"f();");
CHECK_EQ(42, res->Int32Value(ctx2).FromJust());
CHECK(ctx2->Global()
->Set(ctx2, v8_str("o"), v8::Int32::New(isolate, 0))
.FromJust());
ctx2->Exit();
v8::Local<v8::Context>::New(isolate, ctx1)->Exit();
ctx1p.Reset();
isolate->ContextDisposedNotification();
}
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(1, NumberOfGlobalObjects());
ctx2p.Reset();
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(0, NumberOfGlobalObjects());
}
// Test that we don't embed functions from foreign contexts into
// optimized code.
TEST(LeakNativeContextViaFunction) {
i::FLAG_allow_natives_syntax = true;
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope outer_scope(isolate);
v8::Persistent<v8::Context> ctx1p;
v8::Persistent<v8::Context> ctx2p;
{
v8::HandleScope scope(isolate);
ctx1p.Reset(isolate, v8::Context::New(isolate));
ctx2p.Reset(isolate, v8::Context::New(isolate));
v8::Local<v8::Context>::New(isolate, ctx1p)->Enter();
}
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(2, NumberOfGlobalObjects());
{
v8::HandleScope inner_scope(isolate);
CompileRun("var v = function() { return 42; }");
v8::Local<v8::Context> ctx1 = v8::Local<v8::Context>::New(isolate, ctx1p);
v8::Local<v8::Context> ctx2 = v8::Local<v8::Context>::New(isolate, ctx2p);
v8::Local<v8::Value> v =
ctx1->Global()->Get(ctx1, v8_str("v")).ToLocalChecked();
ctx2->Enter();
CHECK(ctx2->Global()->Set(ctx2, v8_str("o"), v).FromJust());
v8::Local<v8::Value> res = CompileRun(
"function f(x) { return x(); }"
"for (var i = 0; i < 10; ++i) f(o);"
"%OptimizeFunctionOnNextCall(f);"
"f(o);");
CHECK_EQ(42, res->Int32Value(ctx2).FromJust());
CHECK(ctx2->Global()
->Set(ctx2, v8_str("o"), v8::Int32::New(isolate, 0))
.FromJust());
ctx2->Exit();
ctx1->Exit();
ctx1p.Reset();
isolate->ContextDisposedNotification();
}
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(1, NumberOfGlobalObjects());
ctx2p.Reset();
CcTest::heap()->CollectAllAvailableGarbage();
CHECK_EQ(0, NumberOfGlobalObjects());
}
TEST(LeakNativeContextViaMapKeyed) {
i::FLAG_allow_natives_syntax = true;
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope outer_scope(isolate);
v8::Persistent<v8::Context> ctx1p;
v8::Persistent<v8::Context> ctx2p;
{
v8::HandleScope scope(isolate);
ctx1p.Reset(isolate, v8::Context::New(isolate));
ctx2p.Reset(isolate, v8::Context::New(isolate));
v8::Local<v8::Context>::New