2 * This file is part of the libCEC(R) library.
4 * libCEC(R) is Copyright (C) 2011 Pulse-Eight Limited. All rights reserved.
5 * libCEC(R) is an original work, containing original code.
7 * libCEC(R) is a trademark of Pulse-Eight Limited.
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.
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.
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.
24 * Alternatively, you can license this library under a commercial license,
25 * please contact Pulse-Eight Licensing for more information.
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/
33 #include "../threads.h"
34 #include "../timeutils.h"
38 CMutex::CMutex(bool bRecursive
/* = true */) :
41 pthread_mutex_init(&m_mutex
, bRecursive
? GetMutexAttribute() : NULL
);
46 pthread_mutex_destroy(&m_mutex
);
49 bool CMutex::TryLock(void)
51 return (pthread_mutex_trylock(&m_mutex
) == 0);
54 bool CMutex::Lock(void)
56 return (pthread_mutex_lock(&m_mutex
) == 0);
59 void CMutex::Unlock(void)
61 pthread_mutex_unlock(&m_mutex
);
64 static pthread_mutexattr_t g_mutexAttr
;
65 pthread_mutexattr_t
*CMutex::GetMutexAttribute()
67 static bool bAttributeInitialised
= false;
68 if (!bAttributeInitialised
)
70 pthread_mutexattr_init(&g_mutexAttr
);
71 pthread_mutexattr_settype(&g_mutexAttr
, PTHREAD_MUTEX_RECURSIVE
);
72 bAttributeInitialised
= true;
77 CCondition::CCondition(void)
79 pthread_cond_init(&m_cond
, NULL
);
82 CCondition::~CCondition(void)
84 pthread_cond_broadcast(&m_cond
);
85 pthread_cond_destroy(&m_cond
);
88 void CCondition::Broadcast(void)
90 pthread_cond_broadcast(&m_cond
);
93 void CCondition::Signal(void)
95 pthread_cond_signal(&m_cond
);
98 bool CCondition::Wait(IMutex
*mutex
, uint32_t iTimeout
/* = 0 */)
102 CMutex
*pmutex
= static_cast<CMutex
*>(mutex
);
107 struct timespec abstime
;
109 gettimeofday(&now
, NULL
);
110 iTimeout
+= now
.tv_usec
/ 1000;
111 abstime
.tv_sec
= now
.tv_sec
+ (time_t)(iTimeout
/ 1000);
112 abstime
.tv_nsec
= (int32_t)((iTimeout
% (uint32_t)1000) * (uint32_t)1000000);
113 bReturn
= (pthread_cond_timedwait(&m_cond
, &pmutex
->m_mutex
, &abstime
) == 0);
117 bReturn
= (pthread_cond_wait(&m_cond
, &pmutex
->m_mutex
) == 0);
123 bool CThread::CreateThread(bool bWait
/* = true */)
126 CLockObject
lock(m_threadMutex
);
128 if (!m_bRunning
&& pthread_create(&m_thread
, NULL
, (void *(*) (void *))&CThread::ThreadHandler
, (void *)this) == 0)
131 m_threadCondition
->Wait(m_threadMutex
);
137 bool CThread::StopThread(bool bWaitForExit
/* = true */)
139 bool bReturn
= IThread::StopThread(bWaitForExit
);
142 if (bWaitForExit
&& m_bRunning
)
143 bReturn
= (pthread_join(m_thread
, &retVal
) == 0);
148 void *CThread::ThreadHandler(CThread
*thread
)
154 CLockObject
lock(thread
->m_threadMutex
);
155 thread
->m_bRunning
= true;
157 thread
->m_threadCondition
->Broadcast();
159 retVal
= thread
->Process();
162 thread
->m_bRunning
= false;
164 thread
->m_threadCondition
->Broadcast();