diff options
Diffstat (limited to 'erts/lib_src/win/ethr_event.c')
| -rw-r--r-- | erts/lib_src/win/ethr_event.c | 72 |
1 files changed, 57 insertions, 15 deletions
diff --git a/erts/lib_src/win/ethr_event.c b/erts/lib_src/win/ethr_event.c index bc2f635c26..c88c8784a2 100644 --- a/erts/lib_src/win/ethr_event.c +++ b/erts/lib_src/win/ethr_event.c @@ -3,16 +3,17 @@ * * Copyright Ericsson AB 2009-2011. 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 - * compliance with the License. You should have received a copy of the - * Erlang Public License along with this software. If not, it can be - * retrieved online at http://www.erlang.org/. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * Software distributed under the License is distributed on an "AS IS" - * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - * the License for the specific language governing rights and limitations - * under the License. + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * * %CopyrightEnd% */ @@ -25,9 +26,16 @@ #define ETHR_EVENT_IMPL__ #include "ethread.h" +#include "ethr_internal.h" /* --- Windows implementation of thread events ------------------------------ */ +void +ethr_init_event__(void) +{ + +} + int ethr_event_init(ethr_event *e) { @@ -58,11 +66,29 @@ ethr_event_reset(ethr_event *e) } static ETHR_INLINE int -wait(ethr_event *e, int spincount) +wait(ethr_event *e, int spincount, ethr_sint64_t timeout) { - DWORD code; + DWORD code, tmo; int sc, res, until_yield = ETHR_YIELD_AFTER_BUSY_LOOPS; + if (timeout < 0) + tmo = INFINITE; + else if (timeout == 0) { + ethr_sint32_t state = ethr_atomic32_read(&e->state); + if (state == ETHR_EVENT_ON__) { + ETHR_MEMBAR(ETHR_LoadLoad|ETHR_LoadStore); + return 0; + } + return ETIMEDOUT; + } + else { + /* + * Timeout in nano-seconds, but we can only + * wait for milli-seconds... + */ + tmo = (DWORD) (timeout - 1) / (1000*1000) + 1; + } + if (spincount < 0) ETHR_FATAL_ERROR__(EINVAL); @@ -72,8 +98,10 @@ wait(ethr_event *e, int spincount) ethr_sint32_t state; while (1) { state = ethr_atomic32_read(&e->state); - if (state == ETHR_EVENT_ON__) + if (state == ETHR_EVENT_ON__) { + ETHR_MEMBAR(ETHR_LoadLoad|ETHR_LoadStore); return 0; + } if (sc == 0) break; sc--; @@ -95,7 +123,9 @@ wait(ethr_event *e, int spincount) ETHR_ASSERT(state == ETHR_EVENT_OFF__); } - code = WaitForSingleObject(e->handle, INFINITE); + code = WaitForSingleObject(e->handle, tmo); + if (code == WAIT_TIMEOUT) + return ETIMEDOUT; if (code != WAIT_OBJECT_0) ETHR_FATAL_ERROR__(ethr_win_get_errno__()); } @@ -105,11 +135,23 @@ wait(ethr_event *e, int spincount) int ethr_event_wait(ethr_event *e) { - return wait(e, 0); + return wait(e, 0, -1); } int ethr_event_swait(ethr_event *e, int spincount) { - return wait(e, spincount); + return wait(e, spincount, -1); +} + +int +ethr_event_twait(ethr_event *e, ethr_sint64_t timeout) +{ + return wait(e, 0, timeout); +} + +int +ethr_event_stwait(ethr_event *e, int spincount, ethr_sint64_t timeout) +{ + return wait(e, spincount, timeout); } |