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511 | #ifndef ECB_MEMORY_FENCE |
511 | #ifndef ECB_MEMORY_FENCE |
512 | #if ECB_GCC_VERSION(4,4) |
512 | #if ECB_GCC_VERSION(4,4) |
513 | #define ECB_MEMORY_FENCE __sync_synchronize () |
513 | #define ECB_MEMORY_FENCE __sync_synchronize () |
514 | #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) |
514 | #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) |
515 | #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) |
515 | #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) |
516 | #elif _MSC_VER >= 1400 |
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517 | #define ECB_MEMORY_FENCE do { } while (0) |
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518 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
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519 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
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520 | #elif defined(_WIN32) && defined(MemoryBarrier) |
516 | #elif defined(_WIN32) && defined(MemoryBarrier) |
521 | #define ECB_MEMORY_FENCE MemoryBarrier () |
517 | #define ECB_MEMORY_FENCE MemoryBarrier () |
522 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
518 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
523 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
519 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
524 | #endif |
520 | #endif |
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1460 | |
1456 | |
1461 | inline_speed void |
1457 | inline_speed void |
1462 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1458 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1463 | { |
1459 | { |
1464 | if (expect_true (*flag)) |
1460 | if (expect_true (*flag)) |
1465 | return; |
1461 | /*return*//*D*/; |
1466 | |
1462 | |
1467 | *flag = 1; |
1463 | *flag = 1; |
1468 | |
1464 | |
1469 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
1465 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
1470 | |
1466 | |