SlamAllocator Class Reference

Collaboration diagram for SlamAllocator:

Classes
struct	AllocFooter
struct	AllocHeader

Public Member Functions
void	initialise ()
uintptr_t	allocate (size_t nBytes)
void	free (uintptr_t mem)
size_t	recovery (size_t maxSlabs=1)
bool	isPointerValid (uintptr_t mem) const
bool	isWithinHeap (uintptr_t mem) const
size_t	allocSize (uintptr_t mem)
size_t	heapPageCount () const
uintptr_t	getSlab (size_t fullSize)
void	freeSlab (uintptr_t address, size_t length)
void	setVigilance (bool b)
bool	getVigilance () const
struct SlamAllocator::AllocHeader	__attribute__ ((aligned(16)))
struct SlamAllocator::AllocFooter	__attribute__ ((aligned(16)))

Static Public Member Functions
static SlamAllocator &	instance ()

Private Member Functions
	SlamAllocator (const SlamAllocator &)
const SlamAllocator &	operator= (const SlamAllocator &)
void	wipe ()

Private Attributes
SlamCache	m_Caches [32]
bool	m_bInitialised
bool	m_bVigilant
Spinlock	m_SlabRegionLock
size_t	m_HeapPageCount
uint64_t *	m_SlabRegionBitmap
size_t	m_SlabRegionBitmapEntries
uintptr_t	m_Base

Static Private Attributes
static EXPORTED_PUBLIC SlamAllocator	m_Instance

Detailed Description

Definition at line 237 of file SlamAllocator.h.

Member Function Documentation

uintptr_t SlamAllocator::allocate

(

size_t

nBytes

)

Note

Even 2G is a stretch on most systems. Use some other allocator to allocate such large buffers.

Definition at line 1188 of file SlamAllocator.cc.

References assert, Dec, ERROR, SlamCache::free(), Thread::getParent(), Hex, Processor::information(), SlamCache::initialise(), Processor::m_Initialised, Backtrace::m_pReturnAddresses, Backtrace::performBpBacktrace(), UNLIKELY, and WARNING.

void SlamAllocator::wipe ( )

private

Wipe out all memory used by the allocator.

Definition at line 888 of file SlamAllocator.cc.

References Dec, FATAL, VirtualAddressSpace::getKernelAddressSpace(), Hex, Processor::information(), Processor::m_Initialised, panic(), and Processor::switchAddressSpace().

Member Data Documentation

SlamAllocator SlamAllocator::m_Instance

staticprivate

Todo:

why does a module access this!?

Definition at line 308 of file SlamAllocator.h.

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

• SlamAllocator.h
• SlamAllocator.cc