164 lines
5.1 KiB
C
164 lines
5.1 KiB
C
/*
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* Copyright (c) 2005, Hervé Drolon, FreeImage Team
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* Copyright (c) 2007, Callum Lerwick <seg@haxxed.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __OPJ_MALLOC_H
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#define __OPJ_MALLOC_H
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/**
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@file opj_malloc.h
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@brief Internal functions
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The functions in opj_malloc.h are internal utilities used for memory management.
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*/
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/** @defgroup MISC MISC - Miscellaneous internal functions */
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/*@{*/
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/** @name Exported functions */
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/*@{*/
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/* ----------------------------------------------------------------------- */
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/**
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Allocate an uninitialized memory block
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@param size Bytes to allocate
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@return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available
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*/
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#ifdef ALLOC_PERF_OPT
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void * OPJ_CALLCONV opj_malloc(size_t size);
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#else
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#define opj_malloc(size) malloc(size)
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#endif
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/**
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Allocate a memory block with elements initialized to 0
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@param num Blocks to allocate
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@param size Bytes per block to allocate
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@return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available
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*/
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#ifdef ALLOC_PERF_OPT
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void * OPJ_CALLCONV opj_calloc(size_t _NumOfElements, size_t _SizeOfElements);
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#else
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#define opj_calloc(num, size) calloc(num, size)
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#endif
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/**
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Allocate memory aligned to a 16 byte boundry
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@param size Bytes to allocate
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@return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available
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*/
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/* FIXME: These should be set with cmake tests, but we're currently not requiring use of cmake */
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#ifdef _WIN32
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/* Someone should tell the mingw people that their malloc.h ought to provide _mm_malloc() */
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#ifdef __GNUC__
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#include <mm_malloc.h>
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#define HAVE_MM_MALLOC
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#else /* MSVC, Intel C++ */
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#include <malloc.h>
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#ifdef _mm_malloc
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#define HAVE_MM_MALLOC
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#endif
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#endif
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#else /* Not _WIN32 */
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#if defined(__sun)
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#define HAVE_MEMALIGN
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/* Linux x86_64 and OSX always align allocations to 16 bytes */
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#elif !defined(__amd64__) && !defined(__APPLE__)
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#define HAVE_MEMALIGN
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#include <malloc.h>
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#endif
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#endif
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#define opj_aligned_malloc(size) malloc(size)
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#define opj_aligned_free(m) free(m)
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#ifdef HAVE_MM_MALLOC
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#undef opj_aligned_malloc
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#define opj_aligned_malloc(size) _mm_malloc(size, 16)
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#undef opj_aligned_free
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#define opj_aligned_free(m) _mm_free(m)
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#endif
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#ifdef HAVE_MEMALIGN
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extern void* memalign(size_t, size_t);
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#undef opj_aligned_malloc
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#define opj_aligned_malloc(size) memalign(16, (size))
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#undef opj_aligned_free
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#define opj_aligned_free(m) free(m)
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#endif
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#ifdef HAVE_POSIX_MEMALIGN
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#undef opj_aligned_malloc
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extern int posix_memalign(void**, size_t, size_t);
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static INLINE void* __attribute__ ((malloc)) opj_aligned_malloc(size_t size){
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void* mem = NULL;
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posix_memalign(&mem, 16, size);
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return mem;
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}
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#undef opj_aligned_free
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#define opj_aligned_free(m) free(m)
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#endif
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#ifdef ALLOC_PERF_OPT
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#undef opj_aligned_malloc
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#define opj_aligned_malloc(size) opj_malloc(size)
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#undef opj_aligned_free
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#define opj_aligned_free(m) opj_free(m)
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#endif
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/**
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Reallocate memory blocks.
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@param m Pointer to previously allocated memory block
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@param s New size in bytes
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@return Returns a void pointer to the reallocated (and possibly moved) memory block
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*/
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#ifdef ALLOC_PERF_OPT
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void * OPJ_CALLCONV opj_realloc(void * m, size_t s);
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#else
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#define opj_realloc(m, s) realloc(m, s)
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#endif
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/**
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Deallocates or frees a memory block.
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@param m Previously allocated memory block to be freed
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*/
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#ifdef ALLOC_PERF_OPT
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void OPJ_CALLCONV opj_free(void * m);
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#else
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#define opj_free(m) free(m)
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#endif
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#ifdef __GNUC__
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#pragma GCC poison malloc calloc realloc free
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#endif
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/* ----------------------------------------------------------------------- */
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/*@}*/
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/*@}*/
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#endif /* __OPJ_MALLOC_H */
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