| … | |
… | |
| 66 | /*****************************************************************************/ |
66 | /*****************************************************************************/ |
| 67 | |
67 | |
| 68 | #ifndef ECB_MEMORY_FENCE |
68 | #ifndef ECB_MEMORY_FENCE |
| 69 | #if ECB_GCC_VERSION(2,5) |
69 | #if ECB_GCC_VERSION(2,5) |
| 70 | #if __x86 |
70 | #if __x86 |
| 71 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; or.b $0, -1(%%esp)" : : : "memory") |
71 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
| 72 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
72 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
| 73 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */ |
73 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */ |
| 74 | #elif __amd64 |
74 | #elif __amd64 |
| 75 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
75 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
| 76 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
76 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
| … | |
… | |
| 82 | #ifndef ECB_MEMORY_FENCE |
82 | #ifndef ECB_MEMORY_FENCE |
| 83 | #if ECB_GCC_VERSION(4,4) |
83 | #if ECB_GCC_VERSION(4,4) |
| 84 | #define ECB_MEMORY_FENCE __sync_synchronize () |
84 | #define ECB_MEMORY_FENCE __sync_synchronize () |
| 85 | #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) |
85 | #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) |
| 86 | #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) |
86 | #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) |
| 87 | #elif _MSC_VER >= 1400 |
87 | #elif _MSC_VER >= 1400 && 0 /* TODO: only true when using volatiles */ |
| 88 | #define ECB_MEMORY_FENCE do { } while (0) |
88 | #define ECB_MEMORY_FENCE do { } while (0) |
| 89 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
89 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
| 90 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
90 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
| 91 | #elif defined(_WIN32) && defined(MemoryBarrier) |
91 | #elif defined(_WIN32) && defined(MemoryBarrier) |
| 92 | #define ECB_MEMORY_FENCE MemoryBarrier () |
92 | #define ECB_MEMORY_FENCE MemoryBarrier () |
