2 * Copyright (c) 2005, Herv� Drolon, FreeImage Team
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30 @brief Internal functions
32 The functions in J2K_LIB.C are internal utilities mainly used for memory management.
36 #define __attribute__(x) /* */
39 /** @defgroup MISC MISC - Miscellaneous internal functions */
42 /** @name Exported functions */
44 /* ----------------------------------------------------------------------- */
47 Difference in successive opj_clock() calls tells you the elapsed time
48 @return Returns time in seconds
50 double opj_clock(void);
53 Allocate a memory block with elements initialized to 0
54 @param size Bytes to allocate
55 @return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available
57 void* __attribute__ ((malloc)) opj_malloc( size_t size );
60 Allocate memory aligned to a 16 byte boundry
61 @param size Bytes to allocate
62 @return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available
67 #include <mm_malloc.h>
68 #else /* MSVC, Intel C++ */
72 #define opj_aligned_malloc(size) _mm_malloc(size, 16)
73 #define opj_aligned_free(m) _mm_free(m)
77 /* Linux x86_64 and OSX always align allocations to 16 bytes */
78 #if defined(__amd64__) || defined(__APPLE__)
79 #define opj_aligned_malloc(size) malloc(size)
81 extern int posix_memalign (void **, size_t, size_t);
83 static INLINE void* __attribute__ ((malloc)) opj_aligned_malloc(size_t size){
85 posix_memalign(&mem, 16, size);
90 #define opj_aligned_free(m) free(m)
95 Reallocate memory blocks.
96 @param memblock Pointer to previously allocated memory block
97 @param size New size in bytes
98 @return Returns a void pointer to the reallocated (and possibly moved) memory block
100 void* __attribute__ ((malloc)) opj_realloc( void *memblock, size_t size );
103 Deallocates or frees a memory block.
104 @param memblock Previously allocated memory block to be freed
106 void opj_free( void *memblock );
108 /* ----------------------------------------------------------------------- */
113 #endif /* __J2K_LIB_H */