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This commit is contained in:
Marc Alexander Lehmann 2011-07-29 12:17:26 +00:00
parent db41c34aec
commit 073d7f16b4
1 changed files with 7 additions and 2 deletions
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9
ev.c
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@ -499,7 +499,7 @@ struct signalfd_siginfo
#if __x86
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
#elif __amd64
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
@ -513,7 +513,12 @@ struct signalfd_siginfo
#define ECB_MEMORY_FENCE __sync_synchronize ()
#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
#elif defined(_WIN32) && defined(MemoryBarrier)
#elif _MSC_VER >= 1400 && 0 /* TODO: only true when using volatiles */
#define ECB_MEMORY_FENCE do { } while (0)
#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
#elif defined(_WIN32)
#include <WinNT.h>
#define ECB_MEMORY_FENCE MemoryBarrier ()
#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE