Differences From Artifact [50acc02363]:
- File
src/atomic.h
— part of check-in
[0c3e3da576]
at
2016-07-30 23:29:38
on branch trunk
— atomic.h: Use the OSAtomic variant without barrier
This matches what the assembly versions does. However, the __sync_*
versions still use the barrier, but unfortunately, no version without it
is provided. The only way around this would be to use the new __atomic_*
that has been added in GCC 4.7. (user: js, size: 20052) [annotate] [blame] [check-ins using]
To Artifact [0145f59683]:
- File
src/atomic.h
— part of check-in
[24796a2dc1]
at
2016-07-31 21:54:30
on branch trunk
— Add of_memory_barrier_{producer,consumer}()
Also changes the naming slightly (leave -> exit). This is more similar
to the membar_*() API NetBSD and OpenBSD provides. (user: js, size: 20414) [annotate] [blame] [check-ins using]
| ︙ | ︙ | |||
964 965 966 967 968 969 970 | return OSAtomicCompareAndSwapPtr(o, n, p); #else # error of_atomic_ptr_cmpswap not implemented! #endif } static OF_INLINE void | | | 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 |
return OSAtomicCompareAndSwapPtr(o, n, p);
#else
# error of_atomic_ptr_cmpswap not implemented!
#endif
}
static OF_INLINE void
of_memory_barrier_sync(void)
{
#if !defined(OF_HAVE_THREADS)
/* nop */
#elif defined(OF_X86_64_ASM)
__asm__ __volatile__ (
"mfence" ::: "memory"
);
|
| ︙ | ︙ | |||
990 991 992 993 994 995 996 | OSMemoryBarrier(); #else # error of_memory_barrier not implemented! #endif } static OF_INLINE void | > > | > | > | > > > > > > > > > > > > | > > > | > | 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 |
OSMemoryBarrier();
#else
# error of_memory_barrier not implemented!
#endif
}
static OF_INLINE void
of_memory_barrier_enter(void)
{
of_memory_barrier_sync();
}
static OF_INLINE void
of_memory_barrier_exit(void)
{
of_memory_barrier_sync();
}
static OF_INLINE void
of_memory_barrier_producer(void)
{
#if defined(OF_X86_64_ASM)
__asm__ __volatile__ ("sfence" ::: "memory");
#else
of_memory_barrier_sync();
#endif
}
static OF_INLINE void
of_memory_barrier_consumer(void)
{
#if defined(OF_X86_64_ASM)
__asm__ __volatile__ ("lfence" ::: "memory");
#else
of_memory_barrier_sync();
#endif
}
OF_ASSUME_NONNULL_END
|