/* * The copyright in this software is being made available under the 2-clauses * BSD License, included below. This software may be subject to other third * party and contributor rights, including patent rights, and no such rights * are granted under this license. * * Copyright (c) 2005, Herve Drolon, FreeImage Team * Copyright (c) 2007, Callum Lerwick <seg@haxxed.com> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef __OPJ_MALLOC_H #define __OPJ_MALLOC_H /** @file opj_malloc.h @brief Internal functions The functions in opj_malloc.h are internal utilities used for memory management. */ /** @defgroup MISC MISC - Miscellaneous internal functions */ /*@{*/ /** @name Exported functions */ /*@{*/ /* ----------------------------------------------------------------------- */ /** Allocate an uninitialized memory block @param size Bytes to allocate @return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available */ #ifdef ALLOC_PERF_OPT void * OPJ_CALLCONV opj_malloc(size_t size); #else /* prevent assertion on overflow for MSVC */ #ifdef _MSC_VER #define opj_malloc(size) ((size_t)(size) >= (size_t)-0x100 ? NULL : malloc(size)) #else #define opj_malloc(size) malloc(size) #endif #endif /** Allocate a memory block with elements initialized to 0 @param num Blocks to allocate @param size Bytes per block to allocate @return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available */ #ifdef ALLOC_PERF_OPT void * OPJ_CALLCONV opj_calloc(size_t _NumOfElements, size_t _SizeOfElements); #else /* prevent assertion on overflow for MSVC */ #ifdef _MSC_VER #define opj_calloc(num, size) ((size_t)(num) != 0 && (size_t)(num) >= (size_t)-0x100 / (size_t)(size) ? NULL : calloc(num, size)) #else #define opj_calloc(num, size) calloc(num, size) #endif #endif /** Allocate memory aligned to a 16 byte boundry @param size Bytes to allocate @return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available */ /* FIXME: These should be set with cmake tests, but we're currently not requiring use of cmake */ #ifdef _WIN32 /* Someone should tell the mingw people that their malloc.h ought to provide _mm_malloc() */ #ifdef __GNUC__ #include <mm_malloc.h> #define HAVE_MM_MALLOC #else /* MSVC, Intel C++ */ #include <malloc.h> #ifdef _mm_malloc #define HAVE_MM_MALLOC #endif #endif #else /* Not _WIN32 */ #if defined(__sun) #define HAVE_MEMALIGN #elif defined(__FreeBSD__) #define HAVE_POSIX_MEMALIGN /* Linux x86_64 and OSX always align allocations to 16 bytes */ #elif !defined(__amd64__) && !defined(__APPLE__) && !defined(_AIX) #define HAVE_MEMALIGN #include <malloc.h> #endif #endif #define opj_aligned_malloc(size) malloc(size) #define opj_aligned_free(m) free(m) #ifdef HAVE_MM_MALLOC #undef opj_aligned_malloc #define opj_aligned_malloc(size) _mm_malloc(size, 16) #undef opj_aligned_free #define opj_aligned_free(m) _mm_free(m) #endif #ifdef HAVE_MEMALIGN extern void* memalign(size_t, size_t); #undef opj_aligned_malloc #define opj_aligned_malloc(size) memalign(16, (size)) #undef opj_aligned_free #define opj_aligned_free(m) free(m) #endif #ifdef HAVE_POSIX_MEMALIGN #undef opj_aligned_malloc extern int posix_memalign(void**, size_t, size_t); static INLINE void* __attribute__ ((malloc)) opj_aligned_malloc(size_t size){ void* mem = NULL; posix_memalign(&mem, 16, size); return mem; } #undef opj_aligned_free #define opj_aligned_free(m) free(m) #endif #ifdef ALLOC_PERF_OPT #undef opj_aligned_malloc #define opj_aligned_malloc(size) opj_malloc(size) #undef opj_aligned_free #define opj_aligned_free(m) opj_free(m) #endif /** Reallocate memory blocks. @param m Pointer to previously allocated memory block @param s New size in bytes @return Returns a void pointer to the reallocated (and possibly moved) memory block */ #ifdef ALLOC_PERF_OPT void * OPJ_CALLCONV opj_realloc(void * m, size_t s); #else /* prevent assertion on overflow for MSVC */ #ifdef _MSC_VER #define opj_realloc(m, s) ((size_t)(s) >= (size_t)-0x100 ? NULL : realloc(m, s)) #else #define opj_realloc(m, s) realloc(m, s) #endif #endif /** Deallocates or frees a memory block. @param m Previously allocated memory block to be freed */ #ifdef ALLOC_PERF_OPT void OPJ_CALLCONV opj_free(void * m); #else #define opj_free(m) free(m) #endif #ifdef __GNUC__ #pragma GCC poison malloc calloc realloc free #endif /* ----------------------------------------------------------------------- */ /*@}*/ /*@}*/ #endif /* __OPJ_MALLOC_H */