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185 lines
5.8 KiB
185 lines
5.8 KiB
/* |
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* The copyright in this software is being made available under the 2-clauses |
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* BSD License, included below. This software may be subject to other third |
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* party and contributor rights, including patent rights, and no such rights |
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* are granted under this license. |
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* |
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* Copyright (c) 2005, Herve 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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/* prevent assertion on overflow for MSVC */ |
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#ifdef _MSC_VER |
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#define opj_malloc(size) ((size_t)(size) >= (size_t)-0x100 ? NULL : malloc(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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#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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/* prevent assertion on overflow for MSVC */ |
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#ifdef _MSC_VER |
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#define opj_calloc(num, size) ((size_t)(num) != 0 && (size_t)(num) >= (size_t)-0x100 / (size_t)(size) ? NULL : calloc(num, size)) |
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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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#endif |
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/** |
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Allocate memory aligned to a 16 byte boundary |
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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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#elif defined(__FreeBSD__) |
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#define HAVE_POSIX_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__) && !defined(_AIX) |
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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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/* prevent assertion on overflow for MSVC */ |
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#ifdef _MSC_VER |
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#define opj_realloc(m, s) ((size_t)(s) >= (size_t)-0x100 ? NULL : realloc(m, 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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#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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