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Data Structures | Public Member Functions | Static Public Member Functions
MemoryAllocator Class Reference

#include <spaces.h>

Public Member Functions

 MemoryAllocator (Isolate *isolate)
 
bool SetUp (intptr_t max_capacity, intptr_t capacity_executable)
 
void TearDown ()
 
Page * AllocatePage (intptr_t size, PagedSpace *owner, Executability executable)
 
LargePage * AllocateLargePage (intptr_t object_size, Space *owner, Executability executable)
 
void Free (MemoryChunk *chunk)
 
intptr_t Available ()
 
intptr_t Size ()
 
intptr_t AvailableExecutable ()
 
intptr_t SizeExecutable ()
 
intptr_t MaxAvailable ()
 
V8_INLINE bool IsOutsideAllocatedSpace (const void *address) const
 
MemoryChunk * AllocateChunk (intptr_t reserve_area_size, intptr_t commit_area_size, Executability executable, Space *space)
 
Address ReserveAlignedMemory (size_t requested, size_t alignment, VirtualMemory *controller)
 
Address AllocateAlignedMemory (size_t reserve_size, size_t commit_size, size_t alignment, Executability executable, VirtualMemory *controller)
 
bool CommitMemory (Address addr, size_t size, Executability executable)
 
void FreeMemory (VirtualMemory *reservation, Executability executable)
 
void FreeMemory (Address addr, size_t size, Executability executable)
 
bool CommitBlock (Address start, size_t size, Executability executable)
 
bool UncommitBlock (Address start, size_t size)
 
void ZapBlock (Address start, size_t size)
 
void PerformAllocationCallback (ObjectSpace space, AllocationAction action, size_t size)
 
void AddMemoryAllocationCallback (MemoryAllocationCallback callback, ObjectSpace space, AllocationAction action)
 
void RemoveMemoryAllocationCallback (MemoryAllocationCallback callback)
 
bool MemoryAllocationCallbackRegistered (MemoryAllocationCallback callback)
 
MUST_USE_RESULT bool CommitExecutableMemory (VirtualMemory *vm, Address start, size_t commit_size, size_t reserved_size)
 

Static Public Member Functions

static int CodePageGuardStartOffset ()
 
static int CodePageGuardSize ()
 
static int CodePageAreaStartOffset ()
 
static int CodePageAreaEndOffset ()
 
static int CodePageAreaSize ()
 

Detailed Description

Definition at line 1078 of file spaces.h.

Constructor & Destructor Documentation

MemoryAllocator ( Isolate *  isolate)
explicit

Definition at line 277 of file spaces.cc.

Member Function Documentation

void AddMemoryAllocationCallback ( MemoryAllocationCallback  callback,
ObjectSpace  space,
AllocationAction  action 
)

Definition at line 826 of file spaces.cc.

References List< T, P >::Add(), ASSERT, MemoryAllocator::MemoryAllocationCallbackRegistered(), and v8::internal::NULL.

Referenced by V8::AddMemoryAllocationCallback().

Address AllocateAlignedMemory ( size_t  reserve_size,
size_t  commit_size,
size_t  alignment,
Executability  executable,
VirtualMemory *  controller 
)

Definition at line 382 of file spaces.cc.

References ASSERT, VirtualMemory::Commit(), MemoryAllocator::CommitExecutableMemory(), v8::internal::EXECUTABLE, v8::internal::NULL, VirtualMemory::Release(), MemoryAllocator::ReserveAlignedMemory(), and VirtualMemory::TakeControl().

Referenced by MemoryAllocator::AllocateChunk().

MemoryChunk * AllocateChunk ( intptr_t  reserve_area_size,
intptr_t  commit_area_size,
Executability  executable,
Space *  space 
)

Definition at line 586 of file spaces.cc.

References MemoryAllocator::AllocateAlignedMemory(), CodeRange::AllocateRawMemory(), ASSERT, Isolate::code_range(), MemoryAllocator::CodePageAreaStartOffset(), MemoryAllocator::CodePageGuardSize(), MemoryAllocator::CodePageGuardStartOffset(), OS::CommitPageSize(), Isolate::counters(), v8::internal::EXECUTABLE, CodeRange::exists(), Isolate::heap(), Space::identity(), MemoryChunk::Initialize(), v8::internal::IsAligned(), MemoryChunk::kAlignment, v8::kAllocationActionAllocate, MemoryChunk::kObjectStartOffset, LOG, MSAN_MEMORY_IS_INITIALIZED, v8::internal::NULL, MemoryAllocator::PerformAllocationCallback(), v8::internal::RoundUp(), MemoryChunk::set_reserved_memory(), Heap::ShouldZapGarbage(), VirtualMemory::size(), and MemoryAllocator::ZapBlock().

Referenced by MemoryAllocator::AllocateLargePage(), and MemoryAllocator::AllocatePage().

LargePage * AllocateLargePage ( intptr_t  object_size,
Space *  owner,
Executability  executable 
)

Definition at line 739 of file spaces.cc.

References MemoryAllocator::AllocateChunk(), Isolate::heap(), and v8::internal::NULL.

Page * AllocatePage ( intptr_t  size,
PagedSpace *  owner,
Executability  executable 
)

Definition at line 728 of file spaces.cc.

References MemoryAllocator::AllocateChunk(), Isolate::heap(), Page::Initialize(), and v8::internal::NULL.

Referenced by PagedSpace::Expand().

intptr_t Available ( )
inline

Definition at line 1097 of file spaces.h.

Referenced by MemoryAllocator::MaxAvailable(), Heap::PrintShortHeapStatistics(), and Heap::RecordStats().

intptr_t AvailableExecutable ( )
inline

Definition at line 1103 of file spaces.h.

int CodePageAreaEndOffset ( )
static

Definition at line 880 of file spaces.cc.

References OS::CommitPageSize().

Referenced by MemoryAllocator::CodePageAreaSize().

static int CodePageAreaSize ( )
inlinestatic

Definition at line 1188 of file spaces.h.

References MemoryAllocator::CodePageAreaEndOffset(), and MemoryAllocator::CodePageAreaStartOffset().

Referenced by Serializer::SpaceAreaSize().

int CodePageAreaStartOffset ( )
static

Definition at line 873 of file spaces.cc.

References MemoryAllocator::CodePageGuardSize(), and MemoryAllocator::CodePageGuardStartOffset().

Referenced by MemoryAllocator::AllocateChunk(), MemoryAllocator::CodePageAreaSize(), and MemoryAllocator::CommitExecutableMemory().

int CodePageGuardSize ( )
static

Definition at line 868 of file spaces.cc.

References OS::CommitPageSize().

Referenced by MemoryAllocator::AllocateChunk(), MemoryAllocator::CodePageAreaStartOffset(), MemoryChunk::CommitArea(), and MemoryAllocator::CommitExecutableMemory().

int CodePageGuardStartOffset ( )
static

Definition at line 861 of file spaces.cc.

References OS::CommitPageSize(), MemoryChunk::kObjectStartOffset, and v8::internal::RoundUp().

Referenced by MemoryAllocator::AllocateChunk(), MemoryAllocator::CodePageAreaStartOffset(), and MemoryAllocator::CommitExecutableMemory().

bool CommitBlock ( Address  start,
size_t  size,
Executability  executable 
)

Definition at line 776 of file spaces.cc.

References MemoryAllocator::CommitMemory(), Isolate::counters(), Heap::ShouldZapGarbage(), and MemoryAllocator::ZapBlock().

bool CommitExecutableMemory ( VirtualMemory *  vm,
Address  start,
size_t  commit_size,
size_t  reserved_size 
)

Definition at line 887 of file spaces.cc.

References MemoryAllocator::CodePageAreaStartOffset(), MemoryAllocator::CodePageGuardSize(), MemoryAllocator::CodePageGuardStartOffset(), VirtualMemory::Commit(), and VirtualMemory::Guard().

Referenced by MemoryAllocator::AllocateAlignedMemory(), and CodeRange::AllocateRawMemory().

bool CommitMemory ( Address  addr,
size_t  size,
Executability  executable 
)

Definition at line 310 of file spaces.cc.

References VirtualMemory::CommitRegion(), and v8::internal::EXECUTABLE.

Referenced by MemoryAllocator::CommitBlock(), and CodeRange::CommitRawMemory().

void Free ( MemoryChunk *  chunk)

Definition at line 751 of file spaces.cc.

References MemoryChunk::address(), MemoryChunk::executable(), MemoryAllocator::FreeMemory(), Isolate::heap(), Space::identity(), MemoryChunk::IsEvacuationCandidate(), VirtualMemory::IsReserved(), v8::kAllocationActionFree, LOG, v8::internal::NULL, MemoryChunk::owner(), MemoryAllocator::PerformAllocationCallback(), Heap::RememberUnmappedPage(), MemoryChunk::reserved_memory(), MemoryChunk::size(), MemoryChunk::skip_list(), and MemoryChunk::slots_buffer().

Referenced by Heap::FreeQueuedChunks(), LargeObjectSpace::FreeUnmarkedObjects(), PagedSpace::ReleasePage(), PagedSpace::TearDown(), LargeObjectSpace::TearDown(), and DeoptimizerData::~DeoptimizerData().

void FreeMemory ( VirtualMemory *  reservation,
Executability  executable 
)

Definition at line 321 of file spaces.cc.

References VirtualMemory::address(), ASSERT, Isolate::code_range(), CodeRange::contains(), Isolate::counters(), v8::internal::EXECUTABLE, CodeRange::exists(), VirtualMemory::IsReserved(), v8::internal::NOT_EXECUTABLE, VirtualMemory::Release(), v8::internal::size, and VirtualMemory::size().

Referenced by MemoryAllocator::Free(), and NewSpace::TearDown().

void FreeMemory ( Address  addr,
size_t  size,
Executability  executable 
)

Definition at line 343 of file spaces.cc.

References ASSERT, Isolate::code_range(), CodeRange::contains(), Isolate::counters(), v8::internal::EXECUTABLE, CodeRange::exists(), CodeRange::FreeRawMemory(), v8::internal::NOT_EXECUTABLE, VirtualMemory::ReleaseRegion(), v8::internal::size, and v8::internal::USE().

V8_INLINE bool IsOutsideAllocatedSpace ( const void *  address) const
inline

Definition at line 1118 of file spaces.h.

Referenced by Heap::Contains(), and Heap::InSpace().

intptr_t MaxAvailable ( )
inline

Definition at line 1112 of file spaces.h.

References MemoryAllocator::Available(), Page::kMaxRegularHeapObjectSize, and Page::kPageSize.

bool MemoryAllocationCallbackRegistered ( MemoryAllocationCallback  callback)

Definition at line 817 of file spaces.cc.

Referenced by MemoryAllocator::AddMemoryAllocationCallback().

void PerformAllocationCallback ( ObjectSpace  space,
AllocationAction  action,
size_t  size 
)

Definition at line 804 of file spaces.cc.

Referenced by MemoryAllocator::AllocateChunk(), MemoryAllocator::Free(), and LargeObjectSpace::TearDown().

void RemoveMemoryAllocationCallback ( MemoryAllocationCallback  callback)

Definition at line 837 of file spaces.cc.

References ASSERT, v8::internal::NULL, List< T, P >::Remove(), and UNREACHABLE.

Referenced by V8::RemoveMemoryAllocationCallback().

Address ReserveAlignedMemory ( size_t  requested,
size_t  alignment,
VirtualMemory *  controller 
)

Definition at line 368 of file spaces.cc.

References VirtualMemory::address(), VirtualMemory::IsReserved(), v8::internal::NULL, v8::internal::RoundUp(), VirtualMemory::size(), and VirtualMemory::TakeControl().

Referenced by MemoryAllocator::AllocateAlignedMemory(), and NewSpace::SetUp().

bool SetUp ( intptr_t  max_capacity,
intptr_t  capacity_executable 
)

Definition at line 288 of file spaces.cc.

References ASSERT_GE, Page::kPageSize, and v8::internal::RoundUp().

Referenced by Heap::SetUp().

intptr_t Size ( )
inline

Definition at line 1100 of file spaces.h.

Referenced by StatisticsExtension::GetCounters(), Heap::PrintShortHeapStatistics(), and Heap::RecordStats().

intptr_t SizeExecutable ( )
inline

Definition at line 1109 of file spaces.h.

Referenced by RegExpCompiler::Assemble(), and Heap::CommittedMemoryExecutable().

void TearDown ( )

Definition at line 300 of file spaces.cc.

References ASSERT.

Referenced by Heap::TearDown().

bool UncommitBlock ( Address  start,
size_t  size 
)

Definition at line 790 of file spaces.cc.

References Isolate::counters(), and VirtualMemory::UncommitRegion().

Referenced by SemiSpace::ShrinkTo().

void ZapBlock ( Address  start,
size_t  size 
)

Definition at line 797 of file spaces.cc.

References Memory::Address_at(), v8::internal::kPointerSize, v8::internal::kZapValue, and v8::internal::size.

Referenced by MemoryAllocator::AllocateChunk(), MemoryChunk::CommitArea(), and MemoryAllocator::CommitBlock().

The documentation for this class was generated from the following files: