cec: fix compilation on windows after interface changes
[deb_libcec.git] / src / lib / util / threads.cpp
... / ...
CommitLineData
1/*
2 * This file is part of the libCEC(R) library.
3 *
4 * libCEC(R) is Copyright (C) 2011 Pulse-Eight Limited. All rights reserved.
5 * libCEC(R) is an original work, containing original code.
6 *
7 * libCEC(R) is a trademark of Pulse-Eight Limited.
8 *
9 * This program is dual-licensed; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 *
23 *
24 * Alternatively, you can license this library under a commercial license,
25 * please contact Pulse-Eight Licensing for more information.
26 *
27 * For more information contact:
28 * Pulse-Eight Licensing <license@pulse-eight.com>
29 * http://www.pulse-eight.com/
30 * http://www.pulse-eight.net/
31 */
32
33#include "threads.h"
34#include "timeutils.h"
35
36CMutex::CMutex(void)
37{
38 pthread_mutex_init(&m_mutex, NULL);
39 m_condition = new CCondition();
40 m_bLocked = false;
41}
42
43CMutex::~CMutex(void)
44{
45 delete m_condition;
46 pthread_mutex_destroy(&m_mutex);
47}
48
49bool CMutex::TryLock(int64_t iTimeout)
50{
51 m_bLocked = (pthread_mutex_trylock(&m_mutex) == 0);
52 if (!m_bLocked)
53 {
54 if (m_condition->Wait(this, iTimeout))
55 m_bLocked = (pthread_mutex_trylock(&m_mutex) == 0);
56 }
57
58 return m_bLocked;
59}
60
61bool CMutex::Lock(void)
62{
63 m_bLocked = (pthread_mutex_lock(&m_mutex) == 0);
64 return m_bLocked;
65}
66
67void CMutex::Unlock(void)
68{
69 pthread_mutex_unlock(&m_mutex);
70 m_bLocked = false;
71 m_condition->Signal();
72}
73
74CLockObject::CLockObject(CMutex *mutex, int64_t iTimeout /* = -1 */) :
75 m_mutex(mutex),
76 m_bLocked(false)
77{
78 if (iTimeout > 0)
79 m_bLocked = m_mutex->TryLock(iTimeout);
80 else
81 m_bLocked = m_mutex->Lock();
82}
83
84CLockObject::~CLockObject(void)
85{
86 m_mutex->Unlock();
87 m_bLocked = false;
88 m_mutex = NULL;
89}
90
91CCondition::CCondition(void)
92{
93 pthread_cond_init(&m_cond, NULL);
94 m_bSignaled = false;
95}
96
97CCondition::~CCondition(void)
98{
99 pthread_cond_broadcast(&m_cond);
100 pthread_cond_destroy(&m_cond);
101}
102
103void CCondition::Signal(void)
104{
105 pthread_cond_broadcast(&m_cond);
106}
107
108bool CCondition::Wait(CMutex *mutex, int64_t iTimeout)
109{
110 struct timespec abstime;
111 struct timeval now;
112 if (gettimeofday(&now, NULL) == 0)
113 {
114 iTimeout += now.tv_usec / 1000;
115 abstime.tv_sec = now.tv_sec + (time_t)(iTimeout / 1000);
116 abstime.tv_nsec = (long)((iTimeout % (unsigned long)1000) * (unsigned long)1000000);
117 m_bSignaled = (pthread_cond_timedwait(&m_cond, &mutex->m_mutex, &abstime) == 0);
118 }
119
120 bool bReturn = m_bSignaled;
121 m_bSignaled = false;
122
123 return bReturn;
124}
125
126void CCondition::Sleep(int iTimeout)
127{
128 sched_yield();
129 CCondition w;
130 CMutex m;
131 w.Wait(&m, iTimeout);
132}