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| author | wm4 <wm4@nowhere> | 2014-05-28 22:37:37 +0200 |
|---|---|---|
| committer | wm4 <wm4@nowhere> | 2014-05-28 22:44:43 +0200 |
| commit | 3238cd3dac49d3f961314f16cf689863db0e92e2 (patch) | |
| tree | e18a550ef3561f3dc771315167d6b9d81f045680 /misc | |
| parent | f289060259113c434a8c69a6ef297415fe0d8f58 (diff) | |
| download | mpv-3238cd3dac49d3f961314f16cf689863db0e92e2.tar.bz2 mpv-3238cd3dac49d3f961314f16cf689863db0e92e2.tar.xz | |
atomics: some corrections to __sync builtins usage
We don't need to combine __sync_add_and_fetch with a memory barrier,
since these intrinsics are documented as using a full barrier already.
Use __sync_fetch_and_add instead of __sync_add_and_fetch; this gives
atomic_fetch_add() the correct return value (although we don't use it).
Use __sync_fetch_and_add to emulate atomic_load(). This should enforce
the full barrier semantics better. (This trick is stolen from the
FreeBSD based stdatomic.h emulation.)
Diffstat (limited to 'misc')
0 files changed, 0 insertions, 0 deletions