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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
/*********************************************************
* Copyright (C) 2004 VMware, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation version 2.1 and no later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the Lesser GNU General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*********************************************************/
/*
* syncEvent.h --
*
* Implements a platform independent condition event that
* you can either wait on or pass to Poll() or your event loop.
*
* WARNING!
* This is an auto-reset event. So, you cannot use it for devices
* in Poll that may be holding a device lock. It works fine for Poll if
* you don't specify a lock when you register the handle with Poll().
*/
#ifndef _SYNC_EVENT_H_
#define _SYNC_EVENT_H_
//#include "syncWaitQ.h"
#include "vm_atomic.h"
#ifndef _WIN32
typedef enum
{
READ_FD_INDEX = 0,
WRITE_FD_INDEX = 1,
NUM_SYNC_EVENT_FDS = 2
} SyncEventFDTypes;
#endif // _WIN32
/*
* SyncEvent --
*/
typedef struct SyncEvent {
/*
* Whether the waitqueue has been initialized;
*/
Bool initialized;
#ifdef _WIN32
HANDLE event;
#else
Atomic_uint32 signalled;
int fdList[NUM_SYNC_EVENT_FDS];
#endif // #ifdef _WIN32
} SyncEvent;
/*
* Be careful, on win64, handles are 64 bits, but Poll takes an int32.
*/
typedef int32 SyncEventSelectableHandle;
Bool SyncEvent_Init(SyncEvent *that);
void SyncEvent_Destroy(SyncEvent *that);
void SyncEvent_Signal(SyncEvent *that);
Bool SyncEvent_TryWait(SyncEvent *that);
void SyncEvent_Wait(SyncEvent *that);
SyncEventSelectableHandle SyncEvent_GetHandle(SyncEvent *that);
#endif // #ifndef _SYNC_EVENT_H_
|
