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SbMutex.h
1 #ifndef COIN_SBMUTEX_H
2 #define COIN_SBMUTEX_H
3
4 /**************************************************************************\
5 *
6 * This file is part of the Coin 3D visualization library.
7 * Copyright (C) by Kongsberg Oil & Gas Technologies.
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * ("GPL") version 2 as published by the Free Software Foundation.
12 * See the file LICENSE.GPL at the root directory of this source
13 * distribution for additional information about the GNU GPL.
14 *
15 * For using Coin with software that can not be combined with the GNU
16 * GPL, and for taking advantage of the additional benefits of our
17 * support services, please contact Kongsberg Oil & Gas Technologies
18 * about acquiring a Coin Professional Edition License.
19 *
20 * See http://www.coin3d.org/ for more information.
21 *
22 * Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
23 * http://www.sim.no/ sales@sim.no coin-support@coin3d.org
24 *
25 \**************************************************************************/
26
27 #include <Inventor/SbBasic.h>
28 #include <Inventor/C/threads/mutex.h>
29
30 class SbMutex {
31 public:
32 SbMutex(void) { this->mutex = cc_mutex_construct(); }
33 ~SbMutex() { cc_mutex_destruct(this->mutex); }
34
35 int lock(void) {
36 cc_mutex_lock(this->mutex);
37 /* Useless return, here just for compatibility with TGS'
38 SbThreadMutex API: */
39 return 0;
40 }
41
42 SbBool tryLock(void) {
43 return cc_mutex_try_lock(this->mutex) == CC_OK;
44 }
45
46 int unlock(void) {
47 cc_mutex_unlock(this->mutex);
48 /* Useless return, here just for compatibility with TGS'
49 SbThreadMutex API: */
50 return 0;
51 }
52
53 private:
54 // FIXME: we need access to C mutex structur. Should we use friend,
55 // or should we add a new public method to get to this structure?
56 // pederb, 2002-06-26
57 friend class SbCondVar;
58 cc_mutex * mutex;
59 };
60
61
62 #ifndef COIN_INTERNAL
63 // For TGS Inventor compile-time compatibility.
64 #include <Inventor/threads/SbThreadAutoLock.h>
65 #endif // COIN_INTERNAL
66
67 #endif // !COIN_SBMUTEX_H
SbMutex
A basic class for managing a mutex.This class provides a portable framework around the mutex interfac...
Definition: SbMutex.h:30
SbMutex::tryLock
SbBool tryLock(void)
Definition: SbMutex.h:42
SbMutex::unlock
int unlock(void)
Definition: SbMutex.h:46
SbMutex::lock
int lock(void)
Definition: SbMutex.h:35
SbCondVar
A class for synchronizing access to global variables.Condition variables are used to protect global v...
Definition: SbCondVar.h:32
SbMutex::SbMutex
SbMutex(void)
Definition: SbMutex.h:32
SbMutex::~SbMutex
~SbMutex()
Definition: SbMutex.h:33

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