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test-heap.cc
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test-heap.cc
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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>
// TODO(dcarney): remove
#define V8_ALLOW_ACCESS_TO_PERSISTENT_ARROW
#define V8_ALLOW_ACCESS_TO_PERSISTENT_IMPLICIT
#include "v8.h"
#include "compilation-cache.h"
#include "execution.h"
#include "factory.h"
#include "macro-assembler.h"
#include "global-handles.h"
#include "stub-cache.h"
#include "cctest.h"
using namespace v8::internal;
// Go through all incremental marking steps in one swoop.
static void SimulateIncrementalMarking() {
MarkCompactCollector* collector = HEAP->mark_compact_collector();
IncrementalMarking* marking = HEAP->incremental_marking();
if (collector->IsConcurrentSweepingInProgress()) {
collector->WaitUntilSweepingCompleted();
}
CHECK(marking->IsMarking() || marking->IsStopped());
if (marking->IsStopped()) {
marking->Start();
}
CHECK(marking->IsMarking());
while (!marking->IsComplete()) {
marking->Step(MB, IncrementalMarking::NO_GC_VIA_STACK_GUARD);
}
CHECK(marking->IsComplete());
}
static void CheckMap(Map* map, int type, int instance_size) {
CHECK(map->IsHeapObject());
#ifdef DEBUG
CHECK(HEAP->Contains(map));
#endif
CHECK_EQ(HEAP->meta_map(), map->map());
CHECK_EQ(type, map->instance_type());
CHECK_EQ(instance_size, map->instance_size());
}
TEST(HeapMaps) {
CcTest::InitializeVM();
CheckMap(HEAP->meta_map(), MAP_TYPE, Map::kSize);
CheckMap(HEAP->heap_number_map(), HEAP_NUMBER_TYPE, HeapNumber::kSize);
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());
bool exc;
Object* print_string =
*Execution::ToString(Handle<Object>(obj, isolate), &exc);
CHECK(String::cast(print_string)->IsUtf8EqualTo(CStrVector(string)));
}
static void CheckSmi(Isolate* isolate, int value, const char* string) {
bool exc;
Object* print_string =
*Execution::ToString(Handle<Object>(Smi::FromInt(value), isolate), &exc);
CHECK(String::cast(print_string)->IsUtf8EqualTo(CStrVector(string)));
}
static void CheckNumber(Isolate* isolate, double value, const char* string) {
Object* obj = HEAP->NumberFromDouble(value)->ToObjectChecked();
CHECK(obj->IsNumber());
bool exc;
Object* print_string =
*Execution::ToString(Handle<Object>(obj, isolate), &exc);
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);
Heap* heap = isolate->heap();
Object* code = heap->CreateCode(
desc,
Code::ComputeFlags(Code::STUB),
Handle<Code>())->ToObjectChecked();
CHECK(code->IsCode());
HeapObject* obj = HeapObject::cast(code);
Address obj_addr = obj->address();
for (int i = 0; i < obj->Size(); i += kPointerSize) {
Object* found = heap->FindCodeObject(obj_addr + i);
CHECK_EQ(code, found);
}
Object* copy = heap->CreateCode(
desc,
Code::ComputeFlags(Code::STUB),
Handle<Code>())->ToObjectChecked();
CHECK(copy->IsCode());
HeapObject* obj_copy = HeapObject::cast(copy);
Object* not_right = heap->FindCodeObject(obj_copy->address() +
obj_copy->Size() / 2);
CHECK(not_right != code);
}
TEST(HeapObjects) {
CcTest::InitializeVM();
Isolate* isolate = Isolate::Current();
Heap* heap = isolate->heap();
HandleScope sc(isolate);
Object* value = heap->NumberFromDouble(1.000123)->ToObjectChecked();
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(1.000123, value->Number());
value = heap->NumberFromDouble(1.0)->ToObjectChecked();
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(1.0, value->Number());
value = heap->NumberFromInt32(1024)->ToObjectChecked();
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(1024.0, value->Number());
value = heap->NumberFromInt32(Smi::kMinValue)->ToObjectChecked();
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(Smi::kMinValue, Smi::cast(value)->value());
value = heap->NumberFromInt32(Smi::kMaxValue)->ToObjectChecked();
CHECK(value->IsSmi());
CHECK(value->IsNumber());
CHECK_EQ(Smi::kMaxValue, Smi::cast(value)->value());
#ifndef V8_TARGET_ARCH_X64
// TODO(lrn): We need a NumberFromIntptr function in order to test this.
value = heap->NumberFromInt32(Smi::kMinValue - 1)->ToObjectChecked();
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(static_cast<double>(Smi::kMinValue - 1), value->Number());
#endif
MaybeObject* maybe_value =
heap->NumberFromUint32(static_cast<uint32_t>(Smi::kMaxValue) + 1);
value = maybe_value->ToObjectChecked();
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(static_cast<double>(static_cast<uint32_t>(Smi::kMaxValue) + 1),
value->Number());
maybe_value = heap->NumberFromUint32(static_cast<uint32_t>(1) << 31);
value = maybe_value->ToObjectChecked();
CHECK(value->IsHeapNumber());
CHECK(value->IsNumber());
CHECK_EQ(static_cast<double>(static_cast<uint32_t>(1) << 31),
value->Number());
// nan oddball checks
CHECK(heap->nan_value()->IsNumber());
CHECK(std::isnan(heap->nan_value()->Number()));
Handle<String> s = FACTORY->NewStringFromAscii(CStrVector("fisk hest "));
CHECK(s->IsString());
CHECK_EQ(10, s->length());
String* object_string = String::cast(heap->Object_string());
CHECK(
Isolate::Current()->context()->global_object()->HasLocalProperty(
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);
}
TEST(Tagging) {
CcTest::InitializeVM();
int request = 24;
CHECK_EQ(request, static_cast<int>(OBJECT_POINTER_ALIGN(request)));
CHECK(Smi::FromInt(42)->IsSmi());
CHECK(Failure::RetryAfterGC(NEW_SPACE)->IsFailure());
CHECK_EQ(NEW_SPACE,
Failure::RetryAfterGC(NEW_SPACE)->allocation_space());
CHECK_EQ(OLD_POINTER_SPACE,
Failure::RetryAfterGC(OLD_POINTER_SPACE)->allocation_space());
CHECK(Failure::Exception()->IsFailure());
CHECK(Smi::FromInt(Smi::kMinValue)->IsSmi());
CHECK(Smi::FromInt(Smi::kMaxValue)->IsSmi());
}
TEST(GarbageCollection) {
CcTest::InitializeVM();
Isolate* isolate = Isolate::Current();
Heap* heap = isolate->heap();
Factory* factory = isolate->factory();
HandleScope sc(isolate);
// Check GC.
heap->CollectGarbage(NEW_SPACE);
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");
{
HandleScope inner_scope(isolate);
// Allocate a function and keep it in global object's property.
Handle<JSFunction> function =
factory->NewFunction(name, factory->undefined_value());
Handle<Map> initial_map =
factory->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
function->set_initial_map(*initial_map);
Isolate::Current()->context()->global_object()->SetProperty(
*name, *function, NONE, kNonStrictMode)->ToObjectChecked();
// Allocate an object. Unrooted after leaving the scope.
Handle<JSObject> obj = factory->NewJSObject(function);
obj->SetProperty(
*prop_name, Smi::FromInt(23), NONE, kNonStrictMode)->ToObjectChecked();
obj->SetProperty(
*prop_namex, Smi::FromInt(24), NONE, kNonStrictMode)->ToObjectChecked();
CHECK_EQ(Smi::FromInt(23), obj->GetProperty(*prop_name));
CHECK_EQ(Smi::FromInt(24), obj->GetProperty(*prop_namex));
}
heap->CollectGarbage(NEW_SPACE);
// Function should be alive.
CHECK(Isolate::Current()->context()->global_object()->
HasLocalProperty(*name));
// Check function is retained.
Object* func_value = Isolate::Current()->context()->global_object()->
GetProperty(*name)->ToObjectChecked();
CHECK(func_value->IsJSFunction());
Handle<JSFunction> function(JSFunction::cast(func_value));
{
HandleScope inner_scope(isolate);
// Allocate another object, make it reachable from global.
Handle<JSObject> obj = factory->NewJSObject(function);
Isolate::Current()->context()->global_object()->SetProperty(
*obj_name, *obj, NONE, kNonStrictMode)->ToObjectChecked();
obj->SetProperty(
*prop_name, Smi::FromInt(23), NONE, kNonStrictMode)->ToObjectChecked();
}
// After gc, it should survive.
heap->CollectGarbage(NEW_SPACE);
CHECK(Isolate::Current()->context()->global_object()->
HasLocalProperty(*obj_name));
CHECK(Isolate::Current()->context()->global_object()->
GetProperty(*obj_name)->ToObjectChecked()->IsJSObject());
Object* obj = Isolate::Current()->context()->global_object()->
GetProperty(*obj_name)->ToObjectChecked();
JSObject* js_obj = JSObject::cast(obj);
CHECK_EQ(Smi::FromInt(23), js_obj->GetProperty(*prop_name));
}
static void VerifyStringAllocation(Isolate* isolate, const char* string) {
HandleScope scope(isolate);
Handle<String> s = isolate->factory()->NewStringFromUtf8(CStrVector(string));
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();
v8::HandleScope scope(CcTest::isolate());
const char* name = "Kasper the spunky";
Handle<String> string = FACTORY->NewStringFromAscii(CStrVector(name));
CHECK_EQ(StrLength(name), string->length());
}
TEST(GlobalHandles) {
CcTest::InitializeVM();
Isolate* isolate = Isolate::Current();
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->NewStringFromAscii(CStrVector("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);
global_handles->Destroy(h1.location());
global_handles->Destroy(h3.location());
CHECK_EQ(*h4, *h2);
global_handles->Destroy(h2.location());
global_handles->Destroy(h4.location());
}
static bool WeakPointerCleared = false;
static void TestWeakGlobalHandleCallback(v8::Isolate* isolate,
v8::Persistent<v8::Value>* handle,
void* id) {
if (1234 == reinterpret_cast<intptr_t>(id)) WeakPointerCleared = true;
handle->Dispose(isolate);
}
TEST(WeakGlobalHandlesScavenge) {
CcTest::InitializeVM();
Isolate* isolate = Isolate::Current();
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->NewStringFromAscii(CStrVector("fisk"));
Handle<Object> u = factory->NewNumber(1.12344);
h1 = global_handles->Create(*i);
h2 = global_handles->Create(*u);
}
global_handles->MakeWeak(h2.location(),
reinterpret_cast<void*>(1234),
&TestWeakGlobalHandleCallback,
NULL);
// Scavenge treats weak pointers as normal roots.
heap->PerformScavenge();
CHECK((*h1)->IsString());
CHECK((*h2)->IsHeapNumber());
CHECK(!WeakPointerCleared);
CHECK(!global_handles->IsNearDeath(h2.location()));
CHECK(!global_handles->IsNearDeath(h1.location()));
global_handles->Destroy(h1.location());
global_handles->Destroy(h2.location());
}
TEST(WeakGlobalHandlesMark) {
CcTest::InitializeVM();
Isolate* isolate = Isolate::Current();
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->NewStringFromAscii(CStrVector("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_POINTER_SPACE);
heap->CollectGarbage(NEW_SPACE);
CHECK(!heap->InNewSpace(*h1) && !heap->InNewSpace(*h2));
global_handles->MakeWeak(h2.location(),
reinterpret_cast<void*>(1234),
&TestWeakGlobalHandleCallback,
NULL);
CHECK(!GlobalHandles::IsNearDeath(h1.location()));
CHECK(!GlobalHandles::IsNearDeath(h2.location()));
// Incremental marking potentially marked handles before they turned weak.
heap->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
CHECK((*h1)->IsString());
CHECK(WeakPointerCleared);
CHECK(!GlobalHandles::IsNearDeath(h1.location()));
global_handles->Destroy(h1.location());
}
TEST(DeleteWeakGlobalHandle) {
CcTest::InitializeVM();
Isolate* isolate = Isolate::Current();
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->NewStringFromAscii(CStrVector("fisk"));
h = global_handles->Create(*i);
}
global_handles->MakeWeak(h.location(),
reinterpret_cast<void*>(1234),
&TestWeakGlobalHandleCallback,
NULL);
// Scanvenge does not recognize weak reference.
heap->PerformScavenge();
CHECK(!WeakPointerCleared);
// Mark-compact treats weak reference properly.
heap->CollectGarbage(OLD_POINTER_SPACE);
CHECK(WeakPointerCleared);
}
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) {
for (const char* string = *strings; *strings != 0; string = *strings++) {
Object* a;
MaybeObject* maybe_a = HEAP->InternalizeUtf8String(string);
// InternalizeUtf8String may return a failure if a GC is needed.
if (!maybe_a->ToObject(&a)) continue;
CHECK(a->IsInternalizedString());
Object* b;
MaybeObject* maybe_b = HEAP->InternalizeUtf8String(string);
if (!maybe_b->ToObject(&b)) continue;
CHECK_EQ(b, a);
CHECK(String::cast(b)->IsUtf8EqualTo(CStrVector(string)));
}
}
TEST(StringTable) {
CcTest::InitializeVM();
CheckInternalizedStrings(not_so_random_string_table);
CheckInternalizedStrings(not_so_random_string_table);
}
TEST(FunctionAllocation) {
CcTest::InitializeVM();
v8::HandleScope sc(CcTest::isolate());
Handle<String> name = FACTORY->InternalizeUtf8String("theFunction");
Handle<JSFunction> function =
FACTORY->NewFunction(name, FACTORY->undefined_value());
Handle<Map> initial_map =
FACTORY->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
function->set_initial_map(*initial_map);
Handle<String> prop_name = FACTORY->InternalizeUtf8String("theSlot");
Handle<JSObject> obj = FACTORY->NewJSObject(function);
obj->SetProperty(
*prop_name, Smi::FromInt(23), NONE, kNonStrictMode)->ToObjectChecked();
CHECK_EQ(Smi::FromInt(23), obj->GetProperty(*prop_name));
// Check that we can add properties to function objects.
function->SetProperty(
*prop_name, Smi::FromInt(24), NONE, kNonStrictMode)->ToObjectChecked();
CHECK_EQ(Smi::FromInt(24), function->GetProperty(*prop_name));
}
TEST(ObjectProperties) {
CcTest::InitializeVM();
v8::HandleScope sc(CcTest::isolate());
String* object_string = String::cast(HEAP->Object_string());
Object* raw_object = Isolate::Current()->context()->global_object()->
GetProperty(object_string)->ToObjectChecked();
JSFunction* object_function = JSFunction::cast(raw_object);
Handle<JSFunction> constructor(object_function);
Handle<JSObject> obj = FACTORY->NewJSObject(constructor);
Handle<String> first = FACTORY->InternalizeUtf8String("first");
Handle<String> second = FACTORY->InternalizeUtf8String("second");
// check for empty
CHECK(!obj->HasLocalProperty(*first));
// add first
obj->SetProperty(
*first, Smi::FromInt(1), NONE, kNonStrictMode)->ToObjectChecked();
CHECK(obj->HasLocalProperty(*first));
// delete first
CHECK(obj->DeleteProperty(*first, JSObject::NORMAL_DELETION));
CHECK(!obj->HasLocalProperty(*first));
// add first and then second
obj->SetProperty(
*first, Smi::FromInt(1), NONE, kNonStrictMode)->ToObjectChecked();
obj->SetProperty(
*second, Smi::FromInt(2), NONE, kNonStrictMode)->ToObjectChecked();
CHECK(obj->HasLocalProperty(*first));
CHECK(obj->HasLocalProperty(*second));
// delete first and then second
CHECK(obj->DeleteProperty(*first, JSObject::NORMAL_DELETION));
CHECK(obj->HasLocalProperty(*second));
CHECK(obj->DeleteProperty(*second, JSObject::NORMAL_DELETION));
CHECK(!obj->HasLocalProperty(*first));
CHECK(!obj->HasLocalProperty(*second));
// add first and then second
obj->SetProperty(
*first, Smi::FromInt(1), NONE, kNonStrictMode)->ToObjectChecked();
obj->SetProperty(
*second, Smi::FromInt(2), NONE, kNonStrictMode)->ToObjectChecked();
CHECK(obj->HasLocalProperty(*first));
CHECK(obj->HasLocalProperty(*second));
// delete second and then first
CHECK(obj->DeleteProperty(*second, JSObject::NORMAL_DELETION));
CHECK(obj->HasLocalProperty(*first));
CHECK(obj->DeleteProperty(*first, JSObject::NORMAL_DELETION));
CHECK(!obj->HasLocalProperty(*first));
CHECK(!obj->HasLocalProperty(*second));
// check string and internalized string match
const char* string1 = "fisk";
Handle<String> s1 = FACTORY->NewStringFromAscii(CStrVector(string1));
obj->SetProperty(
*s1, Smi::FromInt(1), NONE, kNonStrictMode)->ToObjectChecked();
Handle<String> s1_string = FACTORY->InternalizeUtf8String(string1);
CHECK(obj->HasLocalProperty(*s1_string));
// check internalized string and string match
const char* string2 = "fugl";
Handle<String> s2_string = FACTORY->InternalizeUtf8String(string2);
obj->SetProperty(
*s2_string, Smi::FromInt(1), NONE, kNonStrictMode)->ToObjectChecked();
Handle<String> s2 = FACTORY->NewStringFromAscii(CStrVector(string2));
CHECK(obj->HasLocalProperty(*s2));
}
TEST(JSObjectMaps) {
CcTest::InitializeVM();
v8::HandleScope sc(CcTest::isolate());
Handle<String> name = FACTORY->InternalizeUtf8String("theFunction");
Handle<JSFunction> function =
FACTORY->NewFunction(name, FACTORY->undefined_value());
Handle<Map> initial_map =
FACTORY->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
function->set_initial_map(*initial_map);
Handle<String> prop_name = FACTORY->InternalizeUtf8String("theSlot");
Handle<JSObject> obj = FACTORY->NewJSObject(function);
// Set a propery
obj->SetProperty(
*prop_name, Smi::FromInt(23), NONE, kNonStrictMode)->ToObjectChecked();
CHECK_EQ(Smi::FromInt(23), obj->GetProperty(*prop_name));
// Check the map has changed
CHECK(*initial_map != obj->map());
}
TEST(JSArray) {
CcTest::InitializeVM();
v8::HandleScope sc(CcTest::isolate());
Handle<String> name = FACTORY->InternalizeUtf8String("Array");
Object* raw_object = Isolate::Current()->context()->global_object()->
GetProperty(*name)->ToObjectChecked();
Handle<JSFunction> function = Handle<JSFunction>(
JSFunction::cast(raw_object));
// Allocate the object.
Handle<JSObject> object = FACTORY->NewJSObject(function);
Handle<JSArray> array = Handle<JSArray>::cast(object);
// We just initialized the VM, no heap allocation failure yet.
array->Initialize(0)->ToObjectChecked();
// Set array length to 0.
array->SetElementsLength(Smi::FromInt(0))->ToObjectChecked();
CHECK_EQ(Smi::FromInt(0), array->length());
// Must be in fast mode.
CHECK(array->HasFastSmiOrObjectElements());
// array[length] = name.
array->SetElement(0, *name, NONE, kNonStrictMode)->ToObjectChecked();
CHECK_EQ(Smi::FromInt(1), array->length());
CHECK_EQ(array->GetElement(0), *name);
// Set array length with larger than smi value.
Handle<Object> length =
FACTORY->NewNumberFromUint(static_cast<uint32_t>(Smi::kMaxValue) + 1);
array->SetElementsLength(*length)->ToObjectChecked();
uint32_t int_length = 0;
CHECK(length->ToArrayIndex(&int_length));
CHECK_EQ(*length, array->length());
CHECK(array->HasDictionaryElements()); // Must be in slow mode.
// array[length] = name.
array->SetElement(int_length, *name, NONE, kNonStrictMode)->ToObjectChecked();
uint32_t new_int_length = 0;
CHECK(array->length()->ToArrayIndex(&new_int_length));
CHECK_EQ(static_cast<double>(int_length), new_int_length - 1);
CHECK_EQ(array->GetElement(int_length), *name);
CHECK_EQ(array->GetElement(0), *name);
}
TEST(JSObjectCopy) {
CcTest::InitializeVM();
v8::HandleScope sc(CcTest::isolate());
String* object_string = String::cast(HEAP->Object_string());
Object* raw_object = Isolate::Current()->context()->global_object()->
GetProperty(object_string)->ToObjectChecked();
JSFunction* object_function = JSFunction::cast(raw_object);
Handle<JSFunction> constructor(object_function);
Handle<JSObject> obj = FACTORY->NewJSObject(constructor);
Handle<String> first = FACTORY->InternalizeUtf8String("first");
Handle<String> second = FACTORY->InternalizeUtf8String("second");
obj->SetProperty(
*first, Smi::FromInt(1), NONE, kNonStrictMode)->ToObjectChecked();
obj->SetProperty(
*second, Smi::FromInt(2), NONE, kNonStrictMode)->ToObjectChecked();
obj->SetElement(0, *first, NONE, kNonStrictMode)->ToObjectChecked();
obj->SetElement(1, *second, NONE, kNonStrictMode)->ToObjectChecked();
// Make the clone.
Handle<JSObject> clone = Copy(obj);
CHECK(!clone.is_identical_to(obj));
CHECK_EQ(obj->GetElement(0), clone->GetElement(0));
CHECK_EQ(obj->GetElement(1), clone->GetElement(1));
CHECK_EQ(obj->GetProperty(*first), clone->GetProperty(*first));
CHECK_EQ(obj->GetProperty(*second), clone->GetProperty(*second));
// Flip the values.
clone->SetProperty(
*first, Smi::FromInt(2), NONE, kNonStrictMode)->ToObjectChecked();
clone->SetProperty(
*second, Smi::FromInt(1), NONE, kNonStrictMode)->ToObjectChecked();
clone->SetElement(0, *second, NONE, kNonStrictMode)->ToObjectChecked();
clone->SetElement(1, *first, NONE, kNonStrictMode)->ToObjectChecked();
CHECK_EQ(obj->GetElement(1), clone->GetElement(0));
CHECK_EQ(obj->GetElement(0), clone->GetElement(1));
CHECK_EQ(obj->GetProperty(*second), clone->GetProperty(*first));
CHECK_EQ(obj->GetProperty(*first), clone->GetProperty(*second));
}
TEST(StringAllocation) {
CcTest::InitializeVM();
const unsigned char chars[] = { 0xe5, 0xa4, 0xa7 };
for (int length = 0; length < 100; length++) {
v8::HandleScope scope(CcTest::isolate());
char* non_ascii = NewArray<char>(3 * length + 1);
char* ascii = NewArray<char>(length + 1);
non_ascii[3 * length] = 0;
ascii[length] = 0;
for (int i = 0; i < length; i++) {
ascii[i] = 'a';
non_ascii[3 * i] = chars[0];
non_ascii[3 * i + 1] = chars[1];
non_ascii[3 * i + 2] = chars[2];
}
Handle<String> non_ascii_sym =
FACTORY->InternalizeUtf8String(
Vector<const char>(non_ascii, 3 * length));
CHECK_EQ(length, non_ascii_sym->length());
Handle<String> ascii_sym =
FACTORY->InternalizeOneByteString(OneByteVector(ascii, length));
CHECK_EQ(length, ascii_sym->length());
Handle<String> non_ascii_str =
FACTORY->NewStringFromUtf8(Vector<const char>(non_ascii, 3 * length));
non_ascii_str->Hash();
CHECK_EQ(length, non_ascii_str->length());
Handle<String> ascii_str =
FACTORY->NewStringFromUtf8(Vector<const char>(ascii, length));
ascii_str->Hash();
CHECK_EQ(length, ascii_str->length());
DeleteArray(non_ascii);
DeleteArray(ascii);
}
}
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();
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_POINTER_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->NewStringFromAscii(CStrVector("abcdefghij"));
objs[next_objs_index++] =
FACTORY->NewStringFromAscii(CStrVector("abcdefghij"), TENURED);
// Allocate a large string (for large object space).
int large_size = Page::kMaxNonCodeHeapObjectSize + 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->NewStringFromAscii(CStrVector(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(HEAP, objs, objs_count));
}
TEST(EmptyHandleEscapeFrom) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
Handle<JSObject> runaway;
{
v8::HandleScope nested(CcTest::isolate());
Handle<JSObject> empty;
runaway = empty.EscapeFrom(&nested);
}
CHECK(runaway.is_null());
}
static int LenFromSize(int size) {
return (size - FixedArray::kHeaderSize) / kPointerSize;
}
TEST(Regression39128) {
// Test case for crbug.com/39128.
CcTest::InitializeVM();
// Increase the chance of 'bump-the-pointer' allocation in old space.
HEAP->CollectAllGarbage(Heap::kNoGCFlags);
v8::HandleScope scope(CcTest::isolate());
// The plan: create JSObject which references objects in new space.
// Then clone this object (forcing it to go into old space) and check
// that region dirty marks are updated correctly.
// Step 1: prepare a map for the object. We add 1 inobject property to it.
Handle<JSFunction> object_ctor(
Isolate::Current()->native_context()->object_function());
CHECK(object_ctor->has_initial_map());
Handle<Map> object_map(object_ctor->initial_map());
// Create a map with single inobject property.
Handle<Map> my_map = FACTORY->CopyMap(object_map, 1);
int n_properties = my_map->inobject_properties();
CHECK_GT(n_properties, 0);
int object_size = my_map->instance_size();
// Step 2: allocate a lot of objects so to almost fill new space: we need
// just enough room to allocate JSObject and thus fill the newspace.
int allocation_amount = Min(FixedArray::kMaxSize,
HEAP->MaxObjectSizeInNewSpace());
int allocation_len = LenFromSize(allocation_amount);
NewSpace* new_space = HEAP->new_space();
Address* top_addr = new_space->allocation_top_address();
Address* limit_addr = new_space->allocation_limit_address();
while ((*limit_addr - *top_addr) > allocation_amount) {
CHECK(!HEAP->always_allocate());
Object* array = HEAP->AllocateFixedArray(allocation_len)->ToObjectChecked();
CHECK(!array->IsFailure());
CHECK(new_space->Contains(array));
}
// Step 3: now allocate fixed array and JSObject to fill the whole new space.
int to_fill = static_cast<int>(*limit_addr - *top_addr - object_size);
int fixed_array_len = LenFromSize(to_fill);
CHECK(fixed_array_len < FixedArray::kMaxLength);
CHECK(!HEAP->always_allocate());
Object* array = HEAP->AllocateFixedArray(fixed_array_len)->ToObjectChecked();
CHECK(!array->IsFailure());
CHECK(new_space->Contains(array));
Object* object = HEAP->AllocateJSObjectFromMap(*my_map)->ToObjectChecked();
CHECK(new_space->Contains(object));
JSObject* jsobject = JSObject::cast(object);
CHECK_EQ(0, FixedArray::cast(jsobject->elements())->length());
CHECK_EQ(0, jsobject->properties()->length());
// Create a reference to object in new space in jsobject.
jsobject->FastPropertyAtPut(-1, array);