blob: 95e681983f53443c6ef89b74b350da5acfcdbdcb (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/*
* %CopyrightBegin%
*
* 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/.
*
* 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.
*
* %CopyrightEnd%
*/
/*
* Author: Rickard Green
*/
#define ETHR_EVENT_OFF_WAITER__ ((ethr_sint32_t) -1)
#define ETHR_EVENT_OFF__ ((ethr_sint32_t) 1)
#define ETHR_EVENT_ON__ ((ethr_sint32_t) 0)
typedef struct {
ethr_atomic32_t state;
HANDLE handle;
} ethr_event;
#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHR_EVENT_IMPL__)
#pragma intrinsic(_InterlockedExchange)
static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_event_set)(ethr_event *e)
{
/* _InterlockedExchange() imply a full memory barrier which is important */
ethr_sint32_t state = ethr_atomic32_xchg_wb(&e->state, ETHR_EVENT_ON__);
if (state == ETHR_EVENT_OFF_WAITER__) {
if (!SetEvent(e->handle))
ETHR_FATAL_ERROR__(ethr_win_get_errno__());
}
}
static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_event_reset)(ethr_event *e)
{
ethr_atomic32_set(&e->state, ETHR_EVENT_OFF__);
ETHR_MEMORY_BARRIER;
}
#endif
int ethr_event_init(ethr_event *e);
int ethr_event_destroy(ethr_event *e);
int ethr_event_wait(ethr_event *e);
int ethr_event_swait(ethr_event *e, int spincount);
int ethr_event_twait(ethr_event *e, ethr_sint64_t timeout);
int ethr_event_stwait(ethr_event *e, int spincount, ethr_sint64_t timeout);
#if !defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHR_EVENT_IMPL__)
void ethr_event_set(ethr_event *e);
void ethr_event_reset(ethr_event *e);
#endif
|