blob: 8eefb23db280e804ca70212c0ea9f73844a0119b [file] [log] [blame]
// 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 "v8.h"
#include "disassembler.h"
#include "disasm.h"
#include "jsregexp.h"
#include "objects-visiting.h"
namespace v8 {
namespace internal {
#ifdef DEBUG
void MaybeObject::Verify() {
Object* this_as_object;
if (ToObject(&this_as_object)) {
if (this_as_object->IsSmi()) {
Smi::cast(this_as_object)->SmiVerify();
} else {
HeapObject::cast(this_as_object)->HeapObjectVerify();
}
} else {
Failure::cast(this)->FailureVerify();
}
}
void Object::VerifyPointer(Object* p) {
if (p->IsHeapObject()) {
HeapObject::VerifyHeapPointer(p);
} else {
ASSERT(p->IsSmi());
}
}
void Smi::SmiVerify() {
ASSERT(IsSmi());
}
void Failure::FailureVerify() {
ASSERT(IsFailure());
}
void HeapObject::HeapObjectVerify() {
InstanceType instance_type = map()->instance_type();
if (instance_type < FIRST_NONSTRING_TYPE) {
String::cast(this)->StringVerify();
return;
}
switch (instance_type) {
case MAP_TYPE:
Map::cast(this)->MapVerify();
break;
case HEAP_NUMBER_TYPE:
HeapNumber::cast(this)->HeapNumberVerify();
break;
case FIXED_ARRAY_TYPE:
FixedArray::cast(this)->FixedArrayVerify();
break;
case FIXED_DOUBLE_ARRAY_TYPE:
FixedDoubleArray::cast(this)->FixedDoubleArrayVerify();
break;
case BYTE_ARRAY_TYPE:
ByteArray::cast(this)->ByteArrayVerify();
break;
case FREE_SPACE_TYPE:
FreeSpace::cast(this)->FreeSpaceVerify();
break;
case EXTERNAL_PIXEL_ARRAY_TYPE:
ExternalPixelArray::cast(this)->ExternalPixelArrayVerify();
break;
case EXTERNAL_BYTE_ARRAY_TYPE:
ExternalByteArray::cast(this)->ExternalByteArrayVerify();
break;
case EXTERNAL_UNSIGNED_BYTE_ARRAY_TYPE:
ExternalUnsignedByteArray::cast(this)->ExternalUnsignedByteArrayVerify();
break;
case EXTERNAL_SHORT_ARRAY_TYPE:
ExternalShortArray::cast(this)->ExternalShortArrayVerify();
break;
case EXTERNAL_UNSIGNED_SHORT_ARRAY_TYPE:
ExternalUnsignedShortArray::cast(this)->
ExternalUnsignedShortArrayVerify();
break;
case EXTERNAL_INT_ARRAY_TYPE:
ExternalIntArray::cast(this)->ExternalIntArrayVerify();
break;
case EXTERNAL_UNSIGNED_INT_ARRAY_TYPE:
ExternalUnsignedIntArray::cast(this)->ExternalUnsignedIntArrayVerify();
break;
case EXTERNAL_FLOAT_ARRAY_TYPE:
ExternalFloatArray::cast(this)->ExternalFloatArrayVerify();
break;
case EXTERNAL_DOUBLE_ARRAY_TYPE:
ExternalDoubleArray::cast(this)->ExternalDoubleArrayVerify();
break;
case CODE_TYPE:
Code::cast(this)->CodeVerify();
break;
case ODDBALL_TYPE:
Oddball::cast(this)->OddballVerify();
break;
case JS_OBJECT_TYPE:
case JS_CONTEXT_EXTENSION_OBJECT_TYPE:
JSObject::cast(this)->JSObjectVerify();
break;
case JS_VALUE_TYPE:
JSValue::cast(this)->JSValueVerify();
break;
case JS_DATE_TYPE:
JSDate::cast(this)->JSDateVerify();
break;
case JS_FUNCTION_TYPE:
JSFunction::cast(this)->JSFunctionVerify();
break;
case JS_GLOBAL_PROXY_TYPE:
JSGlobalProxy::cast(this)->JSGlobalProxyVerify();
break;
case JS_GLOBAL_OBJECT_TYPE:
JSGlobalObject::cast(this)->JSGlobalObjectVerify();
break;
case JS_BUILTINS_OBJECT_TYPE:
JSBuiltinsObject::cast(this)->JSBuiltinsObjectVerify();
break;
case JS_GLOBAL_PROPERTY_CELL_TYPE:
JSGlobalPropertyCell::cast(this)->JSGlobalPropertyCellVerify();
break;
case JS_ARRAY_TYPE:
JSArray::cast(this)->JSArrayVerify();
break;
case JS_SET_TYPE:
JSSet::cast(this)->JSSetVerify();
break;
case JS_MAP_TYPE:
JSMap::cast(this)->JSMapVerify();
break;
case JS_WEAK_MAP_TYPE:
JSWeakMap::cast(this)->JSWeakMapVerify();
break;
case JS_REGEXP_TYPE:
JSRegExp::cast(this)->JSRegExpVerify();
break;
case FILLER_TYPE:
break;
case JS_PROXY_TYPE:
JSProxy::cast(this)->JSProxyVerify();
break;
case JS_FUNCTION_PROXY_TYPE:
JSFunctionProxy::cast(this)->JSFunctionProxyVerify();
break;
case FOREIGN_TYPE:
Foreign::cast(this)->ForeignVerify();
break;
case SHARED_FUNCTION_INFO_TYPE:
SharedFunctionInfo::cast(this)->SharedFunctionInfoVerify();
break;
case JS_MESSAGE_OBJECT_TYPE:
JSMessageObject::cast(this)->JSMessageObjectVerify();
break;
#define MAKE_STRUCT_CASE(NAME, Name, name) \
case NAME##_TYPE: \
Name::cast(this)->Name##Verify(); \
break;
STRUCT_LIST(MAKE_STRUCT_CASE)
#undef MAKE_STRUCT_CASE
default:
UNREACHABLE();
break;
}
}
void HeapObject::VerifyHeapPointer(Object* p) {
ASSERT(p->IsHeapObject());
ASSERT(HEAP->Contains(HeapObject::cast(p)));
}
void HeapNumber::HeapNumberVerify() {
ASSERT(IsHeapNumber());
}
void ByteArray::ByteArrayVerify() {
ASSERT(IsByteArray());
}
void FreeSpace::FreeSpaceVerify() {
ASSERT(IsFreeSpace());
}
void ExternalPixelArray::ExternalPixelArrayVerify() {
ASSERT(IsExternalPixelArray());
}
void ExternalByteArray::ExternalByteArrayVerify() {
ASSERT(IsExternalByteArray());
}
void ExternalUnsignedByteArray::ExternalUnsignedByteArrayVerify() {
ASSERT(IsExternalUnsignedByteArray());
}
void ExternalShortArray::ExternalShortArrayVerify() {
ASSERT(IsExternalShortArray());
}
void ExternalUnsignedShortArray::ExternalUnsignedShortArrayVerify() {
ASSERT(IsExternalUnsignedShortArray());
}
void ExternalIntArray::ExternalIntArrayVerify() {
ASSERT(IsExternalIntArray());
}
void ExternalUnsignedIntArray::ExternalUnsignedIntArrayVerify() {
ASSERT(IsExternalUnsignedIntArray());
}
void ExternalFloatArray::ExternalFloatArrayVerify() {
ASSERT(IsExternalFloatArray());
}
void ExternalDoubleArray::ExternalDoubleArrayVerify() {
ASSERT(IsExternalDoubleArray());
}
void JSObject::JSObjectVerify() {
VerifyHeapPointer(properties());
VerifyHeapPointer(elements());
if (GetElementsKind() == NON_STRICT_ARGUMENTS_ELEMENTS) {
ASSERT(this->elements()->IsFixedArray());
ASSERT(this->elements()->length() >= 2);
}
if (HasFastProperties()) {
CHECK_EQ(map()->unused_property_fields(),
(map()->inobject_properties() + properties()->length() -
map()->NextFreePropertyIndex()));
}
ASSERT_EQ((map()->has_fast_elements() ||
map()->has_fast_smi_only_elements() ||
(elements() == GetHeap()->empty_fixed_array())),
(elements()->map() == GetHeap()->fixed_array_map() ||
elements()->map() == GetHeap()->fixed_cow_array_map()));
ASSERT(map()->has_fast_elements() == HasFastElements());
}
void Map::MapVerify() {
ASSERT(!HEAP->InNewSpace(this));
ASSERT(FIRST_TYPE <= instance_type() && instance_type() <= LAST_TYPE);
ASSERT(instance_size() == kVariableSizeSentinel ||
(kPointerSize <= instance_size() &&
instance_size() < HEAP->Capacity()));
VerifyHeapPointer(prototype());
VerifyHeapPointer(instance_descriptors());
}
void Map::SharedMapVerify() {
MapVerify();
ASSERT(is_shared());
ASSERT(instance_descriptors()->IsEmpty());
ASSERT_EQ(0, pre_allocated_property_fields());
ASSERT_EQ(0, unused_property_fields());
ASSERT_EQ(StaticVisitorBase::GetVisitorId(instance_type(), instance_size()),
visitor_id());
}
void CodeCache::CodeCacheVerify() {
VerifyHeapPointer(default_cache());
VerifyHeapPointer(normal_type_cache());
ASSERT(default_cache()->IsFixedArray());
ASSERT(normal_type_cache()->IsUndefined()
|| normal_type_cache()->IsCodeCacheHashTable());
}
void PolymorphicCodeCache::PolymorphicCodeCacheVerify() {
VerifyHeapPointer(cache());
ASSERT(cache()->IsUndefined() || cache()->IsPolymorphicCodeCacheHashTable());
}
void TypeFeedbackInfo::TypeFeedbackInfoVerify() {
VerifyObjectField(kIcTotalCountOffset);
VerifyObjectField(kIcWithTypeinfoCountOffset);
VerifyHeapPointer(type_feedback_cells());
}
void AliasedArgumentsEntry::AliasedArgumentsEntryVerify() {
VerifySmiField(kAliasedContextSlot);
}
void FixedArray::FixedArrayVerify() {
for (int i = 0; i < length(); i++) {
Object* e = get(i);
if (e->IsHeapObject()) {
VerifyHeapPointer(e);
} else {
e->Verify();
}
}
}
void FixedDoubleArray::FixedDoubleArrayVerify() {
for (int i = 0; i < length(); i++) {
if (!is_the_hole(i)) {
double value = get_scalar(i);
ASSERT(!isnan(value) ||
(BitCast<uint64_t>(value) ==
BitCast<uint64_t>(canonical_not_the_hole_nan_as_double())) ||
((BitCast<uint64_t>(value) & Double::kSignMask) != 0));
}
}
}
void JSValue::JSValueVerify() {
Object* v = value();
if (v->IsHeapObject()) {
VerifyHeapPointer(v);
}
}
void JSDate::JSDateVerify() {
if (value()->IsHeapObject()) {
VerifyHeapPointer(value());
}
CHECK(value()->IsUndefined() || value()->IsSmi() || value()->IsHeapNumber());
CHECK(year()->IsUndefined() || year()->IsSmi() || year()->IsNaN());
CHECK(month()->IsUndefined() || month()->IsSmi() || month()->IsNaN());
CHECK(day()->IsUndefined() || day()->IsSmi() || day()->IsNaN());
CHECK(weekday()->IsUndefined() || weekday()->IsSmi() || weekday()->IsNaN());
CHECK(hour()->IsUndefined() || hour()->IsSmi() || hour()->IsNaN());
CHECK(min()->IsUndefined() || min()->IsSmi() || min()->IsNaN());
CHECK(sec()->IsUndefined() || sec()->IsSmi() || sec()->IsNaN());
CHECK(cache_stamp()->IsUndefined() ||
cache_stamp()->IsSmi() ||
cache_stamp()->IsNaN());
if (month()->IsSmi()) {
int month = Smi::cast(this->month())->value();
CHECK(0 <= month && month <= 11);
}
if (day()->IsSmi()) {
int day = Smi::cast(this->day())->value();
CHECK(1 <= day && day <= 31);
}
if (hour()->IsSmi()) {
int hour = Smi::cast(this->hour())->value();
CHECK(0 <= hour && hour <= 23);
}
if (min()->IsSmi()) {
int min = Smi::cast(this->min())->value();
CHECK(0 <= min && min <= 59);
}
if (sec()->IsSmi()) {
int sec = Smi::cast(this->sec())->value();
CHECK(0 <= sec && sec <= 59);
}
if (weekday()->IsSmi()) {
int weekday = Smi::cast(this->weekday())->value();
CHECK(0 <= weekday && weekday <= 6);
}
if (cache_stamp()->IsSmi()) {
CHECK(Smi::cast(cache_stamp())->value() <=
Smi::cast(Isolate::Current()->date_cache()->stamp())->value());
}
}
void JSMessageObject::JSMessageObjectVerify() {
CHECK(IsJSMessageObject());
CHECK(type()->IsString());
CHECK(arguments()->IsJSArray());
VerifyObjectField(kStartPositionOffset);
VerifyObjectField(kEndPositionOffset);
VerifyObjectField(kArgumentsOffset);
VerifyObjectField(kScriptOffset);
VerifyObjectField(kStackTraceOffset);
VerifyObjectField(kStackFramesOffset);
}
void String::StringVerify() {
CHECK(IsString());
CHECK(length() >= 0 && length() <= Smi::kMaxValue);
if (IsSymbol()) {
CHECK(!HEAP->InNewSpace(this));
}
if (IsConsString()) {
ConsString::cast(this)->ConsStringVerify();
} else if (IsSlicedString()) {
SlicedString::cast(this)->SlicedStringVerify();
}
}
void ConsString::ConsStringVerify() {
CHECK(this->first()->IsString());
CHECK(this->second() == GetHeap()->empty_string() ||
this->second()->IsString());
CHECK(this->length() >= ConsString::kMinLength);
if (this->IsFlat()) {
// A flat cons can only be created by String::SlowTryFlatten.
// Afterwards, the first part may be externalized.
CHECK(this->first()->IsSeqString() || this->first()->IsExternalString());
}
}
void SlicedString::SlicedStringVerify() {
CHECK(!this->parent()->IsConsString());
CHECK(!this->parent()->IsSlicedString());
CHECK(this->length() >= SlicedString::kMinLength);
}
void JSFunction::JSFunctionVerify() {
CHECK(IsJSFunction());
VerifyObjectField(kPrototypeOrInitialMapOffset);
VerifyObjectField(kNextFunctionLinkOffset);
CHECK(code()->IsCode());
CHECK(next_function_link()->IsUndefined() ||
next_function_link()->IsJSFunction());
}
void SharedFunctionInfo::SharedFunctionInfoVerify() {
CHECK(IsSharedFunctionInfo());
VerifyObjectField(kNameOffset);
VerifyObjectField(kCodeOffset);
VerifyObjectField(kScopeInfoOffset);
VerifyObjectField(kInstanceClassNameOffset);
VerifyObjectField(kFunctionDataOffset);
VerifyObjectField(kScriptOffset);
VerifyObjectField(kDebugInfoOffset);
}
void JSGlobalProxy::JSGlobalProxyVerify() {
CHECK(IsJSGlobalProxy());
JSObjectVerify();
VerifyObjectField(JSGlobalProxy::kContextOffset);
// Make sure that this object has no properties, elements.
CHECK_EQ(0, properties()->length());
CHECK(HasFastElements());
CHECK_EQ(0, FixedArray::cast(elements())->length());
}
void JSGlobalObject::JSGlobalObjectVerify() {
CHECK(IsJSGlobalObject());
JSObjectVerify();
for (int i = GlobalObject::kBuiltinsOffset;
i < JSGlobalObject::kSize;
i += kPointerSize) {
VerifyObjectField(i);
}
}
void JSBuiltinsObject::JSBuiltinsObjectVerify() {
CHECK(IsJSBuiltinsObject());
JSObjectVerify();
for (int i = GlobalObject::kBuiltinsOffset;
i < JSBuiltinsObject::kSize;
i += kPointerSize) {
VerifyObjectField(i);
}
}
void Oddball::OddballVerify() {
CHECK(IsOddball());
VerifyHeapPointer(to_string());
Object* number = to_number();
if (number->IsHeapObject()) {
ASSERT(number == HEAP->nan_value());
} else {
ASSERT(number->IsSmi());
int value = Smi::cast(number)->value();
// Hidden oddballs have negative smis.
const int kLeastHiddenOddballNumber = -4;
ASSERT(value <= 1);
ASSERT(value >= kLeastHiddenOddballNumber);
}
}
void JSGlobalPropertyCell::JSGlobalPropertyCellVerify() {
CHECK(IsJSGlobalPropertyCell());
VerifyObjectField(kValueOffset);
}
void Code::CodeVerify() {
CHECK(IsAligned(reinterpret_cast<intptr_t>(instruction_start()),
kCodeAlignment));
relocation_info()->Verify();
Address last_gc_pc = NULL;
for (RelocIterator it(this); !it.done(); it.next()) {
it.rinfo()->Verify();
// Ensure that GC will not iterate twice over the same pointer.
if (RelocInfo::IsGCRelocMode(it.rinfo()->rmode())) {
CHECK(it.rinfo()->pc() != last_gc_pc);
last_gc_pc = it.rinfo()->pc();
}
}
}
void JSArray::JSArrayVerify() {
JSObjectVerify();
ASSERT(length()->IsNumber() || length()->IsUndefined());
ASSERT(elements()->IsUndefined() ||
elements()->IsFixedArray() ||
elements()->IsFixedDoubleArray());
}
void JSSet::JSSetVerify() {
CHECK(IsJSSet());
JSObjectVerify();
VerifyHeapPointer(table());
ASSERT(table()->IsHashTable() || table()->IsUndefined());
}
void JSMap::JSMapVerify() {
CHECK(IsJSMap());
JSObjectVerify();
VerifyHeapPointer(table());
ASSERT(table()->IsHashTable() || table()->IsUndefined());
}
void JSWeakMap::JSWeakMapVerify() {
CHECK(IsJSWeakMap());
JSObjectVerify();
VerifyHeapPointer(table());
ASSERT(table()->IsHashTable() || table()->IsUndefined());
}
void JSRegExp::JSRegExpVerify() {
JSObjectVerify();
ASSERT(data()->IsUndefined() || data()->IsFixedArray());
switch (TypeTag()) {
case JSRegExp::ATOM: {
FixedArray* arr = FixedArray::cast(data());
ASSERT(arr->get(JSRegExp::kAtomPatternIndex)->IsString());
break;
}
case JSRegExp::IRREGEXP: {
bool is_native = RegExpImpl::UsesNativeRegExp();
FixedArray* arr = FixedArray::cast(data());
Object* ascii_data = arr->get(JSRegExp::kIrregexpASCIICodeIndex);
// Smi : Not compiled yet (-1) or code prepared for flushing.
// JSObject: Compilation error.
// Code/ByteArray: Compiled code.
ASSERT(ascii_data->IsSmi() ||
(is_native ? ascii_data->IsCode() : ascii_data->IsByteArray()));
Object* uc16_data = arr->get(JSRegExp::kIrregexpUC16CodeIndex);
ASSERT(uc16_data->IsSmi() ||
(is_native ? uc16_data->IsCode() : uc16_data->IsByteArray()));
Object* ascii_saved = arr->get(JSRegExp::kIrregexpASCIICodeSavedIndex);
ASSERT(ascii_saved->IsSmi() || ascii_saved->IsString() ||
ascii_saved->IsCode());
Object* uc16_saved = arr->get(JSRegExp::kIrregexpUC16CodeSavedIndex);
ASSERT(uc16_saved->IsSmi() || uc16_saved->IsString() ||
uc16_saved->IsCode());
ASSERT(arr->get(JSRegExp::kIrregexpCaptureCountIndex)->IsSmi());
ASSERT(arr->get(JSRegExp::kIrregexpMaxRegisterCountIndex)->IsSmi());
break;
}
default:
ASSERT_EQ(JSRegExp::NOT_COMPILED, TypeTag());
ASSERT(data()->IsUndefined());
break;
}
}
void JSProxy::JSProxyVerify() {
CHECK(IsJSProxy());
VerifyPointer(handler());
ASSERT(hash()->IsSmi() || hash()->IsUndefined());
}
void JSFunctionProxy::JSFunctionProxyVerify() {
CHECK(IsJSFunctionProxy());
JSProxyVerify();
VerifyPointer(call_trap());
VerifyPointer(construct_trap());
}
void Foreign::ForeignVerify() {
ASSERT(IsForeign());
}
void AccessorInfo::AccessorInfoVerify() {
CHECK(IsAccessorInfo());
VerifyPointer(getter());
VerifyPointer(setter());
VerifyPointer(name());
VerifyPointer(data());
VerifyPointer(flag());
}
void AccessorPair::AccessorPairVerify() {
CHECK(IsAccessorPair());
VerifyPointer(getter());
VerifyPointer(setter());
}
void AccessCheckInfo::AccessCheckInfoVerify() {
CHECK(IsAccessCheckInfo());
VerifyPointer(named_callback());
VerifyPointer(indexed_callback());
VerifyPointer(data());
}
void InterceptorInfo::InterceptorInfoVerify() {
CHECK(IsInterceptorInfo());
VerifyPointer(getter());
VerifyPointer(setter());
VerifyPointer(query());
VerifyPointer(deleter());
VerifyPointer(enumerator());
VerifyPointer(data());
}
void CallHandlerInfo::CallHandlerInfoVerify() {
CHECK(IsCallHandlerInfo());
VerifyPointer(callback());
VerifyPointer(data());
}
void TemplateInfo::TemplateInfoVerify() {
VerifyPointer(tag());
VerifyPointer(property_list());
}
void FunctionTemplateInfo::FunctionTemplateInfoVerify() {
CHECK(IsFunctionTemplateInfo());
TemplateInfoVerify();
VerifyPointer(serial_number());
VerifyPointer(call_code());
VerifyPointer(property_accessors());
VerifyPointer(prototype_template());
VerifyPointer(parent_template());
VerifyPointer(named_property_handler());
VerifyPointer(indexed_property_handler());
VerifyPointer(instance_template());
VerifyPointer(signature());
VerifyPointer(access_check_info());
}
void ObjectTemplateInfo::ObjectTemplateInfoVerify() {
CHECK(IsObjectTemplateInfo());
TemplateInfoVerify();
VerifyPointer(constructor());
VerifyPointer(internal_field_count());
}
void SignatureInfo::SignatureInfoVerify() {
CHECK(IsSignatureInfo());
VerifyPointer(receiver());
VerifyPointer(args());
}
void TypeSwitchInfo::TypeSwitchInfoVerify() {
CHECK(IsTypeSwitchInfo());
VerifyPointer(types());
}
void Script::ScriptVerify() {
CHECK(IsScript());
VerifyPointer(source());
VerifyPointer(name());
line_offset()->SmiVerify();
column_offset()->SmiVerify();
VerifyPointer(data());
VerifyPointer(wrapper());
type()->SmiVerify();
VerifyPointer(line_ends());
VerifyPointer(id());
}
#ifdef ENABLE_DEBUGGER_SUPPORT
void DebugInfo::DebugInfoVerify() {
CHECK(IsDebugInfo());
VerifyPointer(shared());
VerifyPointer(original_code());
VerifyPointer(code());
VerifyPointer(break_points());
}
void BreakPointInfo::BreakPointInfoVerify() {
CHECK(IsBreakPointInfo());
code_position()->SmiVerify();
source_position()->SmiVerify();
statement_position()->SmiVerify();
VerifyPointer(break_point_objects());
}
#endif // ENABLE_DEBUGGER_SUPPORT
void JSObject::IncrementSpillStatistics(SpillInformation* info) {
info->number_of_objects_++;
// Named properties
if (HasFastProperties()) {
info->number_of_objects_with_fast_properties_++;
info->number_of_fast_used_fields_ += map()->NextFreePropertyIndex();
info->number_of_fast_unused_fields_ += map()->unused_property_fields();
} else {
StringDictionary* dict = property_dictionary();
info->number_of_slow_used_properties_ += dict->NumberOfElements();
info->number_of_slow_unused_properties_ +=
dict->Capacity() - dict->NumberOfElements();
}
// Indexed properties
switch (GetElementsKind()) {
case FAST_ELEMENTS: {
info->number_of_objects_with_fast_elements_++;
int holes = 0;
FixedArray* e = FixedArray::cast(elements());
int len = e->length();
Heap* heap = HEAP;
for (int i = 0; i < len; i++) {
if (e->get(i) == heap->the_hole_value()) holes++;
}
info->number_of_fast_used_elements_ += len - holes;
info->number_of_fast_unused_elements_ += holes;
break;
}
case EXTERNAL_PIXEL_ELEMENTS: {
info->number_of_objects_with_fast_elements_++;
ExternalPixelArray* e = ExternalPixelArray::cast(elements());
info->number_of_fast_used_elements_ += e->length();
break;
}
case DICTIONARY_ELEMENTS: {
SeededNumberDictionary* dict = element_dictionary();
info->number_of_slow_used_elements_ += dict->NumberOfElements();
info->number_of_slow_unused_elements_ +=
dict->Capacity() - dict->NumberOfElements();
break;
}
default:
UNREACHABLE();
break;
}
}
void JSObject::SpillInformation::Clear() {
number_of_objects_ = 0;
number_of_objects_with_fast_properties_ = 0;
number_of_objects_with_fast_elements_ = 0;
number_of_fast_used_fields_ = 0;
number_of_fast_unused_fields_ = 0;
number_of_slow_used_properties_ = 0;
number_of_slow_unused_properties_ = 0;
number_of_fast_used_elements_ = 0;
number_of_fast_unused_elements_ = 0;
number_of_slow_used_elements_ = 0;
number_of_slow_unused_elements_ = 0;
}
void JSObject::SpillInformation::Print() {
PrintF("\n JSObject Spill Statistics (#%d):\n", number_of_objects_);
PrintF(" - fast properties (#%d): %d (used) %d (unused)\n",
number_of_objects_with_fast_properties_,
number_of_fast_used_fields_, number_of_fast_unused_fields_);
PrintF(" - slow properties (#%d): %d (used) %d (unused)\n",
number_of_objects_ - number_of_objects_with_fast_properties_,
number_of_slow_used_properties_, number_of_slow_unused_properties_);
PrintF(" - fast elements (#%d): %d (used) %d (unused)\n",
number_of_objects_with_fast_elements_,
number_of_fast_used_elements_, number_of_fast_unused_elements_);
PrintF(" - slow elements (#%d): %d (used) %d (unused)\n",
number_of_objects_ - number_of_objects_with_fast_elements_,
number_of_slow_used_elements_, number_of_slow_unused_elements_);
PrintF("\n");
}
bool DescriptorArray::IsSortedNoDuplicates() {
String* current_key = NULL;
uint32_t current = 0;
for (int i = 0; i < number_of_descriptors(); i++) {
String* key = GetKey(i);
if (key == current_key) {
PrintDescriptors();
return false;
}
current_key = key;
uint32_t hash = GetKey(i)->Hash();
if (hash < current) {
PrintDescriptors();
return false;
}
current = hash;
}
return true;
}
void JSFunctionResultCache::JSFunctionResultCacheVerify() {
JSFunction::cast(get(kFactoryIndex))->Verify();
int size = Smi::cast(get(kCacheSizeIndex))->value();
ASSERT(kEntriesIndex <= size);
ASSERT(size <= length());
ASSERT_EQ(0, size % kEntrySize);
int finger = Smi::cast(get(kFingerIndex))->value();
ASSERT(kEntriesIndex <= finger);
ASSERT((finger < size) || (finger == kEntriesIndex && finger == size));
ASSERT_EQ(0, finger % kEntrySize);
if (FLAG_enable_slow_asserts) {
for (int i = kEntriesIndex; i < size; i++) {
ASSERT(!get(i)->IsTheHole());
get(i)->Verify();
}
for (int i = size; i < length(); i++) {
ASSERT(get(i)->IsTheHole());
get(i)->Verify();
}
}
}
void NormalizedMapCache::NormalizedMapCacheVerify() {
FixedArray::cast(this)->Verify();
if (FLAG_enable_slow_asserts) {
for (int i = 0; i < length(); i++) {
Object* e = get(i);
if (e->IsMap()) {
Map::cast(e)->SharedMapVerify();
} else {
ASSERT(e->IsUndefined());
}
}
}
}
#endif // DEBUG
} } // namespace v8::internal