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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-06-29 03:39:03 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-06-29 03:39:03 +0200 |
| commit | b36b5edb8fea33ebcacc0b77ce412372dd9f79e4 (patch) | |
| tree | e59dce1fce358455046102b32dfd332767dd25c3 /libavcodec | |
| parent | 08f6fdc3e4bbda3837417fb20656165756e6ea87 (diff) | |
| download | ffmpeg-b36b5edb8fea33ebcacc0b77ce412372dd9f79e4.tar.gz | |
avcodec/bitstream_filter: make av_register_bitstream_filter() thread safe
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/bitstream_filter.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/libavcodec/bitstream_filter.c b/libavcodec/bitstream_filter.c index 328a9f6a34..dd105316ee 100644 --- a/libavcodec/bitstream_filter.c +++ b/libavcodec/bitstream_filter.c @@ -21,6 +21,7 @@ #include <string.h> #include "avcodec.h" +#include "libavutil/atomic.h" #include "libavutil/mem.h" static AVBitStreamFilter *first_bitstream_filter= NULL; @@ -31,8 +32,9 @@ AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f){ } void av_register_bitstream_filter(AVBitStreamFilter *bsf){ - bsf->next = first_bitstream_filter; - first_bitstream_filter= bsf; + do { + bsf->next = first_bitstream_filter; + } while(bsf->next != avpriv_atomic_ptr_cas((void * volatile *)&first_bitstream_filter, bsf->next, bsf)); } AVBitStreamFilterContext *av_bitstream_filter_init(const char *name){ |