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author | Diego Biurrun <diego@biurrun.de> | 2012-10-18 19:16:37 +0200 |
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committer | Diego Biurrun <diego@biurrun.de> | 2012-10-20 02:34:29 +0200 |
commit | 5532cf3178385dc7d5414b65e9f01966125d8a9b (patch) | |
tree | 195fc33e4054e617808cebc97fac4872b0ceb76f /libavutil/mem.c | |
parent | c08536979be1a4e9a29e3ee7a6b79f6d73bb12d2 (diff) | |
download | ffmpeg-5532cf3178385dc7d5414b65e9f01966125d8a9b.tar.gz |
avutil/mem: K&R formatting cosmetics
Diffstat (limited to 'libavutil/mem.c')
-rw-r--r-- | libavutil/mem.c | 77 |
1 files changed, 39 insertions, 38 deletions
diff --git a/libavutil/mem.c b/libavutil/mem.c index 3769da7d21..16c1adb014 100644 --- a/libavutil/mem.c +++ b/libavutil/mem.c @@ -58,8 +58,8 @@ void free(void *ptr); #endif /* MALLOC_PREFIX */ /* You can redefine av_malloc and av_free in your project to use your - memory allocator. You do not need to suppress this file because the - linker will do it automatically. */ + * memory allocator. You do not need to suppress this file because the + * linker will do it automatically. */ void *av_malloc(size_t size) { @@ -69,46 +69,46 @@ void *av_malloc(size_t size) #endif /* let's disallow possible ambiguous cases */ - if (size > (INT_MAX-32) || !size) + if (size > (INT_MAX - 32) || !size) return NULL; #if CONFIG_MEMALIGN_HACK - ptr = malloc(size+32); - if(!ptr) + ptr = malloc(size + 32); + if (!ptr) return ptr; - diff= ((-(long)ptr - 1)&31) + 1; - ptr = (char*)ptr + diff; - ((char*)ptr)[-1]= diff; + diff = ((-(long)ptr - 1) & 31) + 1; + ptr = (char *)ptr + diff; + ((char *)ptr)[-1] = diff; #elif HAVE_POSIX_MEMALIGN - if (posix_memalign(&ptr,32,size)) + if (posix_memalign(&ptr, 32, size)) ptr = NULL; #elif HAVE_ALIGNED_MALLOC ptr = _aligned_malloc(size, 32); #elif HAVE_MEMALIGN - ptr = memalign(32,size); + ptr = memalign(32, size); /* Why 64? - Indeed, we should align it: - on 4 for 386 - on 16 for 486 - on 32 for 586, PPro - K6-III - on 64 for K7 (maybe for P3 too). - Because L1 and L2 caches are aligned on those values. - But I don't want to code such logic here! + * Indeed, we should align it: + * on 4 for 386 + * on 16 for 486 + * on 32 for 586, PPro - K6-III + * on 64 for K7 (maybe for P3 too). + * Because L1 and L2 caches are aligned on those values. + * But I don't want to code such logic here! */ - /* Why 32? - For AVX ASM. SSE / NEON needs only 16. - Why not larger? Because I did not see a difference in benchmarks ... + /* Why 32? + * For AVX ASM. SSE / NEON needs only 16. + * Why not larger? Because I did not see a difference in benchmarks ... */ - /* benchmarks with P3 - memalign(64)+1 3071,3051,3032 - memalign(64)+2 3051,3032,3041 - memalign(64)+4 2911,2896,2915 - memalign(64)+8 2545,2554,2550 - memalign(64)+16 2543,2572,2563 - memalign(64)+32 2546,2545,2571 - memalign(64)+64 2570,2533,2558 - - BTW, malloc seems to do 8-byte alignment by default here. + /* benchmarks with P3 + * memalign(64) + 1 3071, 3051, 3032 + * memalign(64) + 2 3051, 3032, 3041 + * memalign(64) + 4 2911, 2896, 2915 + * memalign(64) + 8 2545, 2554, 2550 + * memalign(64) + 16 2543, 2572, 2563 + * memalign(64) + 32 2546, 2545, 2571 + * memalign(64) + 64 2570, 2533, 2558 + * + * BTW, malloc seems to do 8-byte alignment by default here. */ #else ptr = malloc(size); @@ -123,14 +123,15 @@ void *av_realloc(void *ptr, size_t size) #endif /* let's disallow possible ambiguous cases */ - if(size > (INT_MAX-16) ) + if (size > (INT_MAX - 16)) return NULL; #if CONFIG_MEMALIGN_HACK //FIXME this isn't aligned correctly, though it probably isn't needed - if(!ptr) return av_malloc(size); - diff= ((char*)ptr)[-1]; - return (char*)realloc((char*)ptr - diff, size + diff) + diff; + if (!ptr) + return av_malloc(size); + diff = ((char *)ptr)[-1]; + return (char *)realloc((char *)ptr - diff, size + diff) + diff; #elif HAVE_ALIGNED_MALLOC return _aligned_realloc(ptr, size, 32); #else @@ -142,7 +143,7 @@ void av_free(void *ptr) { #if CONFIG_MEMALIGN_HACK if (ptr) - free((char*)ptr - ((char*)ptr)[-1]); + free((char *)ptr - ((char *)ptr)[-1]); #elif HAVE_ALIGNED_MALLOC _aligned_free(ptr); #else @@ -152,7 +153,7 @@ void av_free(void *ptr) void av_freep(void *arg) { - void **ptr= (void**)arg; + void **ptr = (void **)arg; av_free(*ptr); *ptr = NULL; } @@ -167,8 +168,8 @@ void *av_mallocz(size_t size) char *av_strdup(const char *s) { - char *ptr= NULL; - if(s){ + char *ptr = NULL; + if (s) { int len = strlen(s) + 1; ptr = av_malloc(len); if (ptr) |