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| author | Christophe Fergeau <cfergeau@redhat.com> | 2011-04-22 13:31:48 +0200 |
|---|---|---|
| committer | Christophe Fergeau <cfergeau@redhat.com> | 2011-05-03 14:44:11 +0200 |
| commit | f88dc6eecb56222688275893e2a891d8ec23d1d6 (patch) | |
| tree | a43ef42e7d38f64bffb1585388b9bf93d7590073 /server/red_worker.h | |
| parent | 1caee1f21691e954c96fa31ba7c9baf97d896784 (diff) | |
| download | spice-f88dc6eecb56222688275893e2a891d8ec23d1d6.tar.gz spice-f88dc6eecb56222688275893e2a891d8ec23d1d6.tar.xz spice-f88dc6eecb56222688275893e2a891d8ec23d1d6.zip | |
server: use gcc builtin for atomic get/set bit
Diffstat (limited to 'server/red_worker.h')
| -rw-r--r-- | server/red_worker.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/server/red_worker.h b/server/red_worker.h index ae2eaeec..b4e2ed2e 100644 --- a/server/red_worker.h +++ b/server/red_worker.h @@ -23,12 +23,14 @@ static inline void set_bit(int index, uint32_t *addr) { - __asm__ __volatile__ ("lock btsl %1, %0": : "m" (*addr), "r" (index)); + uint32_t mask = 1 << index; + __sync_or_and_fetch(addr, mask); } static inline void clear_bit(int index, uint32_t *addr) { - __asm__ __volatile__ ("lock btrl %1, %0": : "m" (*addr), "r" (index)); + uint32_t mask = ~(1 << index); + __sync_and_and_fetch(addr, mask); } static inline int test_bit(int index, uint32_t val) |