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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 && 0 /* TODO: only true when using volatiles */ |
516 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
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517 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
| 517 | #define ECB_MEMORY_FENCE do { } while (0) |
518 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
| 518 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
519 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
| 519 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
520 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
| 520 | #elif defined(_WIN32) |
521 | #elif defined(_WIN32) |
| 521 | #include <WinNT.h> |
522 | #include <WinNT.h> |
| 522 | #define ECB_MEMORY_FENCE MemoryBarrier () |
523 | #define ECB_MEMORY_FENCE MemoryBarrier () |
| 523 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
524 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
| 524 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
525 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
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| 2617 | time_update (EV_A_ 1e100); |
2618 | time_update (EV_A_ 1e100); |
| 2618 | |
2619 | |
| 2619 | /* from now on, we want a pipe-wake-up */ |
2620 | /* from now on, we want a pipe-wake-up */ |
| 2620 | pipe_write_wanted = 1; |
2621 | pipe_write_wanted = 1; |
| 2621 | |
2622 | |
| 2622 | 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 */ |
| 2623 | |
2624 | |
| 2624 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
2625 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
| 2625 | { |
2626 | { |
| 2626 | waittime = MAX_BLOCKTIME; |
2627 | waittime = MAX_BLOCKTIME; |
| 2627 | |
2628 | |
