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23e7e3ae JVH |
1 | /** |
2 | * Copyright (C) 2011-2012 Juho Vähä-Herttua | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU Lesser General Public | |
6 | * License as published by the Free Software Foundation; either | |
7 | * version 2.1 of the License, or (at your option) any later version. | |
8 | * | |
9 | * This library is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * Lesser General Public License for more details. | |
13 | */ | |
14 | ||
2340bcd3 JVH |
15 | #ifndef MEMALIGN_H |
16 | #define MEMALIGN_H | |
17 | ||
18 | #if defined(WIN32) | |
19 | ||
20 | #define SYSTEM_GET_PAGESIZE(ret) do {\ | |
21 | SYSTEM_INFO si;\ | |
22 | GetSystemInfo(&si);\ | |
23 | ret = si.dwPageSize;\ | |
24 | } while(0) | |
25 | #define SYSTEM_GET_TIME(ret) ret = timeGetTime() | |
26 | ||
27 | #define ALIGNED_MALLOC(memptr, alignment, size) do {\ | |
28 | char *ptr = malloc(sizeof(void*) + (size) + (alignment)-1);\ | |
29 | memptr = NULL;\ | |
30 | if (ptr) {\ | |
31 | size_t ptrval = (size_t)ptr + sizeof(void*) + (alignment)-1;\ | |
32 | ptrval = ptrval / (alignment) * (alignment);\ | |
33 | memptr = (void *)ptrval;\ | |
34 | *(((void **)memptr)-1) = ptr;\ | |
35 | }\ | |
36 | } while(0) | |
37 | #define ALIGNED_FREE(memptr) free(*(((void **)memptr)-1)) | |
38 | ||
39 | #else | |
40 | ||
41 | #define SYSTEM_GET_PAGESIZE(ret) ret = sysconf(_SC_PAGESIZE) | |
42 | #define SYSTEM_GET_TIME(ret) do {\ | |
43 | struct timeval tv;\ | |
44 | gettimeofday(&tv, NULL);\ | |
45 | ret = (unsigned int)(tv.tv_sec*1000 + tv.tv_usec/1000);\ | |
46 | } while(0) | |
47 | ||
48 | #define ALIGNED_MALLOC(memptr, alignment, size) if (posix_memalign((void **)&memptr, alignment, size)) memptr = NULL | |
49 | #define ALIGNED_FREE(memptr) free(memptr) | |
50 | ||
51 | #endif | |
52 | ||
53 | #endif |