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Diffstat (limited to 'third_party/libopenjpeg20/opj_malloc.h')
| -rw-r--r-- | third_party/libopenjpeg20/opj_malloc.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/third_party/libopenjpeg20/opj_malloc.h b/third_party/libopenjpeg20/opj_malloc.h new file mode 100644 index 0000000000..5007b0c9e2 --- /dev/null +++ b/third_party/libopenjpeg20/opj_malloc.h @@ -0,0 +1,185 @@ +/* + * 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 */ + |