| 1 | #ifndef MEMALIGN_H |
| 2 | #define MEMALIGN_H |
| 3 | |
| 4 | #if defined(WIN32) |
| 5 | |
| 6 | #define SYSTEM_GET_PAGESIZE(ret) do {\ |
| 7 | SYSTEM_INFO si;\ |
| 8 | GetSystemInfo(&si);\ |
| 9 | ret = si.dwPageSize;\ |
| 10 | } while(0) |
| 11 | #define SYSTEM_GET_TIME(ret) ret = timeGetTime() |
| 12 | |
| 13 | #define ALIGNED_MALLOC(memptr, alignment, size) do {\ |
| 14 | char *ptr = malloc(sizeof(void*) + (size) + (alignment)-1);\ |
| 15 | memptr = NULL;\ |
| 16 | if (ptr) {\ |
| 17 | size_t ptrval = (size_t)ptr + sizeof(void*) + (alignment)-1;\ |
| 18 | ptrval = ptrval / (alignment) * (alignment);\ |
| 19 | memptr = (void *)ptrval;\ |
| 20 | *(((void **)memptr)-1) = ptr;\ |
| 21 | }\ |
| 22 | } while(0) |
| 23 | #define ALIGNED_FREE(memptr) free(*(((void **)memptr)-1)) |
| 24 | |
| 25 | #else |
| 26 | |
| 27 | #define SYSTEM_GET_PAGESIZE(ret) ret = sysconf(_SC_PAGESIZE) |
| 28 | #define SYSTEM_GET_TIME(ret) do {\ |
| 29 | struct timeval tv;\ |
| 30 | gettimeofday(&tv, NULL);\ |
| 31 | ret = (unsigned int)(tv.tv_sec*1000 + tv.tv_usec/1000);\ |
| 32 | } while(0) |
| 33 | |
| 34 | #define ALIGNED_MALLOC(memptr, alignment, size) if (posix_memalign((void **)&memptr, alignment, size)) memptr = NULL |
| 35 | #define ALIGNED_FREE(memptr) free(memptr) |
| 36 | |
| 37 | #endif |
| 38 | |
| 39 | #endif |