/[svn]/linuxsampler/trunk/src/common/Mutex.cpp
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Contents of /linuxsampler/trunk/src/common/Mutex.cpp

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Revision 165 - (show annotations) (download)
Thu Jul 1 04:25:55 2004 UTC (19 years, 9 months ago) by senkov
File size: 2296 byte(s)
* Small enhancement to mutex class to support Trylock()

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 * *
7 * This program is free software; you can redistribute it and/or modify *
8 * it under the terms of the GNU General Public License as published by *
9 * the Free Software Foundation; either version 2 of the License, or *
10 * (at your option) any later version. *
11 * *
12 * This program is distributed in the hope that it will be useful, *
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15 * GNU General Public License for more details. *
16 * *
17 * You should have received a copy of the GNU General Public License *
18 * along with this program; if not, write to the Free Software *
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
20 * MA 02111-1307 USA *
21 ***************************************************************************/
22
23 #include <iostream>
24
25 #include "Mutex.h"
26
27 Mutex::Mutex() {
28 if (pthread_mutexattr_settype(&__posix_mutexattr, PTHREAD_MUTEX_ERRORCHECK)) {
29 std::cout << "Mutex Constructor: Fatal error - unable to pthread_mutexattr_settype(PTHREAD_MUTEX_ERRORCHECK)\n" << std::flush;
30 exit(-1);
31 }
32 pthread_mutex_init(&__posix_mutex, &__posix_mutexattr);
33 }
34
35 Mutex::~Mutex() {
36 pthread_mutex_destroy(&__posix_mutex);
37 }
38
39 void Mutex::Lock() {
40 pthread_mutex_lock(&__posix_mutex);
41 }
42
43 bool Mutex::Trylock() {
44 if (pthread_mutex_trylock(&__posix_mutex) == EBUSY)
45 return false;
46 return true;
47 }
48
49 void Mutex::Unlock() {
50 pthread_mutex_unlock(&__posix_mutex);
51 }

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