diff options
Diffstat (limited to 'erts/emulator/sys/win32')
| -rw-r--r-- | erts/emulator/sys/win32/erl_poll.c | 8 | ||||
| -rw-r--r-- | erts/emulator/sys/win32/erl_win_dyn_driver.h | 2 |
2 files changed, 7 insertions, 3 deletions
diff --git a/erts/emulator/sys/win32/erl_poll.c b/erts/emulator/sys/win32/erl_poll.c index 1f2877b682..7662f190ef 100644 --- a/erts/emulator/sys/win32/erl_poll.c +++ b/erts/emulator/sys/win32/erl_poll.c @@ -452,12 +452,15 @@ poll_wait_timeout(ErtsPollSet ps, SysTimeval *tvp) static ERTS_INLINE void wake_poller(ErtsPollSet ps, int io_ready) { - erts_aint32_t wakeup_state = erts_atomic32_read(&ps->wakeup_state); + erts_aint32_t wakeup_state; if (io_ready) { /* We may set the event multiple times. This is, however, harmless. */ - erts_atomic32_set(&ps->wakeup_state, ERTS_POLL_WOKEN_IO_READY); + wakeup_state = erts_atomic32_read(&ps->wakeup_state); + erts_atomic32_set_relb(&ps->wakeup_state, ERTS_POLL_WOKEN_IO_READY); } else { + ERTS_THR_MEMORY_BARRIER; + wakeup_state = erts_atomic32_read(&ps->wakeup_state); while (wakeup_state != ERTS_POLL_WOKEN_IO_READY && wakeup_state != ERTS_POLL_WOKEN_INTR) { erts_aint32_t act = erts_atomic32_cmpxchg(&ps->wakeup_state, @@ -518,6 +521,7 @@ reset_interrupt(ErtsPollSet ps) break; wakeup_state = act; } + ERTS_THR_MEMORY_BARRIER; } static ERTS_INLINE void diff --git a/erts/emulator/sys/win32/erl_win_dyn_driver.h b/erts/emulator/sys/win32/erl_win_dyn_driver.h index 1347eead91..ecb06868d5 100644 --- a/erts/emulator/sys/win32/erl_win_dyn_driver.h +++ b/erts/emulator/sys/win32/erl_win_dyn_driver.h @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 2003-2009. All Rights Reserved. + * Copyright Ericsson AB 2003-2011. All Rights Reserved. * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in |