blob: 5f5acda7b3e5dcea27f90cedca4563ba95e1f83b (
plain)
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
|
/*******************************************************************************
* Copyright (C) ST-Ericsson SA 2011
* License terms: 3-clause BSD license
******************************************************************************/
#include <errno.h>
#include <sys/time.h>
#include "Types.h"
#include "CEventObject.h"
#include "OS.h"
// ******************************************************************************
// Name: CEventObject()
// Desc: CEventObject constructor which initializes the m_sem member
// Ret:
// ******************************************************************************
CEventObject::CEventObject()
{
sem_init(&m_sem, 0, 0);
}
// ******************************************************************************
// Name: ~CEventObject()
// Desc: CEventObject destructor
// Ret:
// ******************************************************************************
CEventObject::~CEventObject()
{
sem_destroy(&m_sem);
}
// ******************************************************************************
// Name: SetEvent()
// Desc: Sets an event by post-ing the member semaphore m_sem
// Ret:
// ******************************************************************************
void CEventObject::SetEvent()
{
sem_post(&m_sem);
}
// ******************************************************************************
// Name: Wait()
// Desc: implementation of the pure virtual base class member Wait()
// Ret: WAIT_OBJECT_0 when event occurs, or WAIT_TIMEOUT on timeout
// ******************************************************************************
DWORD CEventObject::Wait(DWORD dwTimeout)
{
if (INFINITE == dwTimeout) {
sem_wait(&m_sem);
return WAIT_OBJECT_0;
} else {
timespec absolute_time = OS::GetAbsoluteTime(dwTimeout);
int ret;
/* coverity[returned_null] */
while (-1 == (ret = sem_timedwait(&m_sem, &absolute_time)) && errno == EINTR);
if (0 == ret) {
return WAIT_OBJECT_0;
} else {
return WAIT_TIMEOUT;
}
}
}
|
