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1 /*
2     Copyright 2004-2005 Chris Tallon
3
4     This file is part of VOMP.
5
6     VOMP is free software; you can redistribute it and/or modify
7     it under the terms of the GNU General Public License as published by
8     the Free Software Foundation; either version 2 of the License, or
9     (at your option) any later version.
10
11     VOMP is distributed in the hope that it will be useful,
12     but WITHOUT ANY WARRANTY; without even the implied warranty of
13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14     GNU General Public License for more details.
15
16     You should have received a copy of the GNU General Public License
17     along with VOMP; if not, write to the Free Software
18     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
19 */
20
21 #include "threadp.h"
22
23 // Undeclared functions, only for use in this file to start the thread
24 void threadPInternalStart(void *arg)
25 {
26   // I don't want signals
27   sigset_t sigs;
28   sigfillset(&sigs);
29   pthread_sigmask(SIG_BLOCK, &sigs, NULL);
30
31   Thread *t = (Thread *)arg;
32   t->threadInternalStart2();
33 }
34
35 int ThreadP::threadStart()
36 {
37   pthread_cond_init(&threadCond, NULL);
38   pthread_mutex_init(&threadCondMutex, NULL);
39
40   threadActive = 1;
41   if (pthread_create(&pthread, NULL, (void*(*)(void*))threadPInternalStart, (void *)this) == -1) return 0;
42   return 1;
43 }
44
45 void ThreadP::threadStop()
46 {
47         if (threadActive) { // we need this, on some implementations this will fail, if already stopped
48                 threadActive = 0;
49                 // Signal thread here in case it's waiting
50                 threadSignal();
51                 pthread_join(pthread, NULL);
52                 this->threadPostStopCleanup();
53         }
54 }
55
56
57 void ThreadP::threadCancel()
58 {
59         if (threadActive) {
60                 threadActive = 0;
61                 pthread_cancel(pthread);
62                 pthread_join(pthread, NULL);
63                 this->threadPostStopCleanup();
64         }
65 }
66
67
68 void ThreadP::threadCheckExit()
69 {
70   if (!threadActive) pthread_exit(NULL);
71 }
72
73 void ThreadP::threadLock()
74 {
75   pthread_mutex_lock(&threadCondMutex);
76 }
77
78 void ThreadP::threadUnlock()
79 {
80   pthread_mutex_unlock(&threadCondMutex);
81 }
82
83 void ThreadP::threadSignal()
84 {
85   pthread_mutex_lock(&threadCondMutex);
86   pthread_cond_signal(&threadCond);
87   pthread_mutex_unlock(&threadCondMutex);
88 }
89
90 void ThreadP::threadSignalNoLock()
91 {
92   pthread_cond_signal(&threadCond);
93 }
94
95 void ThreadP::threadWaitForSignal()
96 {
97   pthread_cond_wait(&threadCond, &threadCondMutex);
98 }
99
100 void ThreadP::threadWaitForSignalTimed(struct timespec* ts)
101 {
102   pthread_cond_timedwait(&threadCond, &threadCondMutex, ts);
103 }
104
105 void ThreadP::threadSetKillable()
106 {
107   pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
108   pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
109 }
110
111
112 pthread_t ThreadP::getThreadID() // returns the ID of this thread
113 {
114   return pthread;
115 }
116
117 // Static functions
118
119 void ThreadP::threadSuicide()
120 {
121   if(!pthread_detach(pthread_self()))
122   {
123     MILLISLEEP(1000);
124     if(!pthread_detach(pthread_self()))
125     {
126       MILLISLEEP(1000);
127       pthread_detach(pthread_self());
128     }
129   }
130
131   pthread_exit(NULL);
132 }
133
134 pthread_t ThreadP::thisThreadID() // returns the ID of the calling thread
135 {
136   return pthread_self();
137 }