TBCI Numerical high perf. C++ Library: tbci_memalloc_cache< T > Struct Template Reference

TBCI Numerical high perf. C++ Library 2.8.0

For specializations of the memory allocator: More...

#include <malloc_cache.h>

Public Member Functions
int	find_by_sz (const unsigned ln) const
	Find free slot with right len, starting point for search is free_idx. More...

void	enter (const T *const ptr, const unsigned ln)
	Enter into list of FREE slots. More...

void	free_and_enter (const T *const ptr, const unsigned ln)

void	rmv (const unsigned idx)
	Remove from list of FREE slots. More...

const T *	find_and_rmv (const unsigned sz)

T *	alloc (const unsigned long)

void	dealloc (const T *const, const unsigned long)

void	deinit (const int thr)

void	init (const int thr)

void	smp_init ()

void	smp_deinit ()

	sizeof (tbci_memalloc_cache_tls< T >)*(num_threads+1))

	init (0)

	if (nthr)

	thread_reg_callback ((cbackfn )&_init,(cbackfn )&_deinit,(void *) this)

	~tbci_memalloc_cache ()

Static Public Member Functions
static void	_init (tbci_memalloc_cache< T > *th, const int thr)

static void	_deinit (tbci_memalloc_cache< T > *th, const int thr)

Public Attributes
tbci_memalloc_cache_tls< T > *	malloc_tls

int	nthr

	__pad0__: nthr(num_threads) { malloc_tls = (tbci_memalloc_cache_tls<T>*) memalign(128

Detailed Description

template<typename T>
struct tbci_memalloc_cache< T >

For specializations of the memory allocator:

Freed (dealloced) memory blocks are not actually freed, but kept in a little cache, so an allocation to a block of the same size shortly after will succeed without a call to new/malloc/memalign.
This happens often for TBCI and thus helps to speed up operations like assignement.
Specialization is only suitable for types that do nothing in their default c'tor, such as all elementary types.

Definition at line 279 of file malloc_cache.h.

Constructor & Destructor Documentation

template<typename T>

tbci_memalloc_cache< T >::~tbci_memalloc_cache ( )

inline

Definition at line 387 of file malloc_cache.h.

References tbci_memalloc_cache< T >::_deinit(), tbci_memalloc_cache< T >::_init(), tbci_memalloc_cache< T >::deinit(), tbci_memalloc_cache< T >::malloc_tls, tbci_memalloc_cache< T >::smp_deinit(), and thread_dereg_callback().

Member Function Documentation

template<typename T>

static void tbci_memalloc_cache< T >::_deinit	(	tbci_memalloc_cache< T > *	th,
		const int	thr
	)

inlinestatic

Definition at line 311 of file malloc_cache.h.

References tbci_memalloc_cache< T >::smp_deinit().

Referenced by tbci_memalloc_cache< T >::~tbci_memalloc_cache().

template<typename T>

static void tbci_memalloc_cache< T >::_init	(	tbci_memalloc_cache< T > *	th,
		const int	thr
	)

inlinestatic

Definition at line 297 of file malloc_cache.h.

References tbci_memalloc_cache< T >::malloc_tls, tbci_memalloc_cache< T >::nthr, tbci_memalloc_cache< T >::smp_init(), and TBCI::SWAP().

Referenced by tbci_memalloc_cache< T >::~tbci_memalloc_cache().

template<typename T >

T * tbci_memalloc_cache< T >::alloc ( const unsigned long sz )

inline

We MAY be thread safe on x86 and x86-64, but not anywhere else

Definition at line 467 of file malloc_cache.h.

References _MC_NEW, BCHK, DEBUG_PRINTF3, ismainthread, T, TBCI_MALLOC_LIMIT, thrno, and UNLIKELY.

template<typename T >

void tbci_memalloc_cache< T >::dealloc	(	const T * const	ptr,
		const unsigned long	sz
	)

inline

Definition at line 508 of file malloc_cache.h.

References _MC_DELETE, BCHK, CSTD__, ismainthread, T, TBCI_MALLOC_LIMIT, and UNLIKELY.

template<typename T >

void tbci_memalloc_cache< T >::deinit ( const int thr )

inline

Definition at line 528 of file malloc_cache.h.

References _MC_DELETE, DEBUG_PRINTF1, DEBUG_PRINTF3, tbci_memalloc_cache_tls< T >::free_pt, tbci_memalloc_cache_tls< T >::free_sz, T, and TBCI_MALLOC_POOLSZ.

Referenced by tbci_memalloc_cache< T >::smp_deinit(), and tbci_memalloc_cache< T >::~tbci_memalloc_cache().

template<typename T >

void tbci_memalloc_cache< T >::enter	(	const T *const	ptr,
		const unsigned	ln
	)

inline

Enter into list of FREE slots.

Definition at line 433 of file malloc_cache.h.

References tbci_memalloc_cache_tls< T >::free_idx, tbci_memalloc_cache_tls< T >::free_pt, tbci_memalloc_cache_tls< T >::free_sz, TBCI_MALLOC_POOLSZ, and thrno.

template<typename T >

const T * tbci_memalloc_cache< T >::find_and_rmv ( const unsigned sz )

inline

Definition at line 452 of file malloc_cache.h.

References LIKELY, SMP_LOCK, SMP_UNLOCK, T, and thrno.

template<typename T >

int tbci_memalloc_cache< T >::find_by_sz ( const unsigned ln ) const

inline

Find free slot with right len, starting point for search is free_idx.

Definition at line 402 of file malloc_cache.h.

References BCHK, DEBUG_PRINTF1, DEBUG_PRINTF2, tbci_memalloc_cache_tls< T >::free_idx, tbci_memalloc_cache_tls< T >::free_sz, tbci_memalloc_cache_tls< T >::hit, i, tbci_memalloc_cache_tls< T >::miss, small, tbci_memalloc_cache_tls< T >::srch, TBCI_MALLOC_POOLSZ, and thrno.

template<typename T >

void tbci_memalloc_cache< T >::free_and_enter	(	const T *const	ptr,
		const unsigned	ln
	)

inline

Definition at line 490 of file malloc_cache.h.

References _MC_DELETE, DEBUG_PRINTF4, tbci_memalloc_cache_tls< T >::free_idx, tbci_memalloc_cache_tls< T >::free_pt, tbci_memalloc_cache_tls< T >::free_sz, LIKELY, SMP_LOCK, SMP_UNLOCK, T, thrno, and UNLIKELY.

template<typename T>

tbci_memalloc_cache< T >::if ( nthr )

inline

Definition at line 378 of file malloc_cache.h.

References tbci_memalloc_cache< T >::smp_init().

template<typename T>

void tbci_memalloc_cache< T >::init ( const int thr )

inline

Definition at line 315 of file malloc_cache.h.

References BCHK, CSTD__, tbci_memalloc_cache_tls< T >::free_idx, tbci_memalloc_cache< T >::malloc_tls, tbci_memalloc_cache< T >::nthr, and TBCI_MALLOC_POOLSZ.

Referenced by tbci_memalloc_cache< T >::smp_init().

template<typename T>

tbci_memalloc_cache< T >::init ( 0 )

template<typename T >

void tbci_memalloc_cache< T >::rmv ( const unsigned idx )

inline

Remove from list of FREE slots.

Definition at line 444 of file malloc_cache.h.

References tbci_memalloc_cache_tls< T >::free_idx, tbci_memalloc_cache_tls< T >::free_sz, and thrno.

template<typename T>

tbci_memalloc_cache< T >::sizeof ( tbci_memalloc_cache_tls< T > )

template<typename T>

void tbci_memalloc_cache< T >::smp_deinit ( )

inline

Definition at line 337 of file malloc_cache.h.

References all, CSTD__, tbci_memalloc_cache< T >::deinit(), hit, tbci_memalloc_cache< T >::malloc_tls, miss, tbci_memalloc_cache< T >::nthr, srch, T, and thrno.

Referenced by tbci_memalloc_cache< T >::_deinit(), and tbci_memalloc_cache< T >::~tbci_memalloc_cache().

template<typename T>

void tbci_memalloc_cache< T >::smp_init ( )

inline

Definition at line 329 of file malloc_cache.h.

References tbci_memalloc_cache< T >::init(), and tbci_memalloc_cache< T >::nthr.

Referenced by tbci_memalloc_cache< T >::_init(), and tbci_memalloc_cache< T >::if().

template<typename T>

tbci_memalloc_cache< T >::thread_reg_callback	(	(cbackfn *)&	_init,
		(cbackfn *)&	_deinit,
		(void *)	this
	)

Member Data Documentation

template<typename T>

tbci_memalloc_cache< T >::__pad0__

Definition at line 375 of file malloc_cache.h.

template<typename T>

tbci_memalloc_cache_tls<T>* tbci_memalloc_cache< T >::malloc_tls

Definition at line 281 of file malloc_cache.h.

Referenced by tbci_memalloc_cache< T >::_init(), tbci_memalloc_cache< T >::init(), tbci_memalloc_cache< T >::smp_deinit(), and tbci_memalloc_cache< T >::~tbci_memalloc_cache().

template<typename T>

int tbci_memalloc_cache< T >::nthr

Definition at line 286 of file malloc_cache.h.

Referenced by tbci_memalloc_cache< T >::_init(), tbci_memalloc_cache< T >::init(), tbci_memalloc_cache< T >::smp_deinit(), and tbci_memalloc_cache< T >::smp_init().

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

malloc_cache.h