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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 ()
 
MemoryChunk * AllocateChunk (intptr_t body_size, Executability executable, Space *space)
 
Address ReserveAlignedMemory (size_t requested, size_t alignment, VirtualMemory *controller)
 
Address AllocateAlignedMemory (size_t requested, size_t alignment, Executability executable, VirtualMemory *controller)
 
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)
 

Static Public Member Functions

static int CodePageGuardStartOffset ()
 
static int CodePageGuardSize ()
 
static int CodePageAreaStartOffset ()
 
static int CodePageAreaEndOffset ()
 
static int CodePageAreaSize ()
 
static MUST_USE_RESULT bool CommitCodePage (VirtualMemory *vm, Address start, size_t size)
 

Detailed Description

Definition at line 953 of file spaces.h.

Constructor & Destructor Documentation

MemoryAllocator ( Isolate *  isolate)
explicit

Definition at line 264 of file spaces.cc.

Member Function Documentation

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

Definition at line 673 of file spaces.cc.

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

Referenced by V8::AddMemoryAllocationCallback().

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

Definition at line 356 of file spaces.cc.

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

Referenced by MemoryAllocator::AllocateChunk().

MemoryChunk * AllocateChunk ( intptr_t  body_size,
Executability  executable,
Space *  space 
)

Definition at line 491 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, 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 589 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 578 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 972 of file spaces.h.

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

intptr_t AvailableExecutable ( )
inline

Definition at line 978 of file spaces.h.

int CodePageAreaEndOffset ( )
static

Definition at line 727 of file spaces.cc.

References OS::CommitPageSize().

Referenced by MemoryAllocator::CodePageAreaSize().

static int CodePageAreaSize ( )
inlinestatic

Definition at line 1049 of file spaces.h.

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

Referenced by Serializer::SpaceAreaSize().

int CodePageAreaStartOffset ( )
static

Definition at line 720 of file spaces.cc.

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

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

int CodePageGuardSize ( )
static

Definition at line 715 of file spaces.cc.

References OS::CommitPageSize().

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

int CodePageGuardStartOffset ( )
static

Definition at line 708 of file spaces.cc.

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

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

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

Definition at line 623 of file spaces.cc.

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

bool CommitCodePage ( VirtualMemory *  vm,
Address  start,
size_t  size 
)
static

Definition at line 734 of file spaces.cc.

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

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

void Free ( MemoryChunk *  chunk)

Definition at line 598 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(), and LargeObjectSpace::TearDown().

void FreeMemory ( VirtualMemory *  reservation,
Executability  executable 
)

Definition at line 295 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(), and VirtualMemory::size().

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

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

Definition at line 317 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(), and v8::internal::USE().

intptr_t MaxAvailable ( )
inline

Definition at line 987 of file spaces.h.

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

bool MemoryAllocationCallbackRegistered ( MemoryAllocationCallback  callback)

Definition at line 664 of file spaces.cc.

Referenced by MemoryAllocator::AddMemoryAllocationCallback().

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

Definition at line 651 of file spaces.cc.

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

void RemoveMemoryAllocationCallback ( MemoryAllocationCallback  callback)

Definition at line 684 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 342 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 273 of file spaces.cc.

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

Referenced by Heap::SetUp().

intptr_t Size ( )
inline

Definition at line 975 of file spaces.h.

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

intptr_t SizeExecutable ( )
inline

Definition at line 984 of file spaces.h.

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

void TearDown ( )

Definition at line 285 of file spaces.cc.

References ASSERT.

Referenced by Heap::TearDown().

bool UncommitBlock ( Address  start,
size_t  size 
)

Definition at line 637 of file spaces.cc.

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

Referenced by SemiSpace::ShrinkTo().

void ZapBlock ( Address  start,
size_t  size 
)

Definition at line 644 of file spaces.cc.

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

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

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