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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 defined(_WIN32) && defined(MemoryBarrier) |
516 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
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517 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
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518 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
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519 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
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520 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
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521 | #elif defined(_WIN32) |
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522 | #include <WinNT.h> |
| 517 | #define ECB_MEMORY_FENCE MemoryBarrier () |
523 | #define ECB_MEMORY_FENCE MemoryBarrier () |
| 518 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
524 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
| 519 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
525 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
| 520 | #endif |
526 | #endif |
| 521 | #endif |
527 | #endif |
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| 1456 | |
1462 | |
| 1457 | inline_speed void |
1463 | inline_speed void |
| 1458 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1464 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
| 1459 | { |
1465 | { |
| 1460 | if (expect_true (*flag)) |
1466 | if (expect_true (*flag)) |
| 1461 | /*return*//*D*/; |
1467 | return; |
| 1462 | |
1468 | |
| 1463 | *flag = 1; |
1469 | *flag = 1; |
| 1464 | |
1470 | |
| 1465 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
1471 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
| 1466 | |
1472 | |
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| 2612 | time_update (EV_A_ 1e100); |
2618 | time_update (EV_A_ 1e100); |
| 2613 | |
2619 | |
| 2614 | /* from now on, we want a pipe-wake-up */ |
2620 | /* from now on, we want a pipe-wake-up */ |
| 2615 | pipe_write_wanted = 1; |
2621 | pipe_write_wanted = 1; |
| 2616 | |
2622 | |
| 2617 | ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */ |
2623 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
| 2618 | |
2624 | |
| 2619 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
2625 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
| 2620 | { |
2626 | { |
| 2621 | waittime = MAX_BLOCKTIME; |
2627 | waittime = MAX_BLOCKTIME; |
| 2622 | |
2628 | |
