cds::memory::michael::page_cached_allocator< FreeListCapacity, Heap > Class Template Reference

Page cacheable heap. More...

#include <cds/memory/michael/allocator.h>

Inheritance diagram for cds::memory::michael::page_cached_allocator< FreeListCapacity, Heap >:

Public Member Functions
	page_cached_allocator (size_t nPageSize)
	Initializes heap. More...
void *	alloc ()
	Allocate new page.
void	free (void *pPage)
	Free page pPage.
Public Member Functions inherited from cds::memory::michael::page_allocator< Heap >
	page_allocator (size_t nPageSize)
	Initializes heap. More...
void *	alloc ()
	Allocate new page.
void	free (void *pPage)
	Free page pPage.
Public Member Functions inherited from cds::memory::michael::Heap< Options >
	Heap ()
	Heap constructor.
	~Heap ()
	Heap destructor. More...
void *	alloc (size_t nSize)
	Allocate memory block. More...
void	free (void *pMemory)
	Free previously allocated memory block. More...
void *	realloc (void *pMemory, size_t nNewSize)
	Reallocate memory block. More...
void *	alloc_aligned (size_t nSize, size_t nAlignment)
	Allocate aligned memory block. More...
void	free_aligned (void *pMemory)
	Free aligned memory block previously allocated by alloc_aligned. More...
void	summaryStat (summary_stat &st)
	Get instant summary statistics.

Additional Inherited Members
Public Types inherited from cds::memory::michael::Heap< Options >
enum	superblock_state { SBSTATE_ACTIVE = 0, SBSTATE_FULL = 1, SBSTATE_PARTIAL = 2, SBSTATE_EMPTY = 3 }
	Superblock states. More...
typedef options::sys_topology	sys_topology
	effective system topology
typedef options::system_heap	system_heap
	effective system heap
typedef options::aligned_heap	aligned_heap
	effective aligned heap
typedef options::sizeclass_selector	sizeclass_selector
	effective sizeclass selector
typedef options::page_heap	page_heap
	effective page heap
typedef options::procheap_stat	procheap_stat
	effective processor heap statistics
typedef options::os_allocated_stat	os_allocated_stat
	effective OS-allocated memory statistics
typedef details::bound_checker_selector < typename options::check_bounds >	bound_checker
	effective bound checker
typedef cds::details::type_padding < processor_heap_base, c_nAlignment >::type	processor_heap
	Aligned superblock descriptor.
Static Public Attributes inherited from cds::memory::michael::Heap< Options >
static const size_t	c_nMaxBlockInSuperBlock = 1024 * 2
	Max count of blocks in superblock (2 ** 11)
Protected Attributes inherited from cds::memory::michael::Heap< Options >
sys_topology	m_Topology
	System topology.
system_heap	m_LargeHeap
	Heap for large block.
aligned_heap	m_AlignedHeap
	Internal aligned heap.
sizeclass_selector	m_SizeClassSelector
	Size-class selector.
std::atomic< processor_desc * > *	m_arrProcDesc
	array of pointers to the processor descriptors
unsigned int	m_nProcessorCount
	Processor count.
bound_checker	m_BoundChecker
	Bound checker.
os_allocated_stat	m_OSAllocStat
	OS-allocated memory statistics.

Detailed Description

template<size_t FreeListCapacity = 64, class Heap = malloc_heap>
class cds::memory::michael::page_cached_allocator< FreeListCapacity, Heap >

Page cacheable heap.

To improve performance this allocator maintains small list of free pages. Page heap can allocate memory by page-sized block only.

Template parameters:

• FreeListCapacity - capacity of free-list, default value is 64 page
• Heap may be any heap that provides interface like malloc_heap.

This class is one of available implementation of opt::page_heap option.

Constructor & Destructor Documentation

template<size_t FreeListCapacity = 64, class Heap = malloc_heap>

cds::memory::michael::page_cached_allocator< FreeListCapacity, Heap >::page_cached_allocator ( size_t  nPageSize )

inline

Initializes heap.

Parameters

nPageSize

page size in bytes

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

• cds/memory/michael/allocator.h