/usr/include/OpenThreads/Mutex is in libopenthreads-dev 3.2.3+dfsg1-2ubuntu8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 | /* -*-c++-*- OpenThreads library, Copyright (C) 2002 - 2007 The Open Thread Group
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
//
// Mutex - C++ mutex class
// ~~~~~
//
#ifndef _OPENTHREADS_MUTEX_
#define _OPENTHREADS_MUTEX_
#include <OpenThreads/Exports>
namespace OpenThreads {
/**
* @class Mutex
* @brief This class provides an object-oriented thread mutex interface.
*/
class OPENTHREAD_EXPORT_DIRECTIVE Mutex {
friend class Condition;
public:
enum MutexType
{
MUTEX_NORMAL,
MUTEX_RECURSIVE
};
/**
* Constructor
*/
Mutex(MutexType type=MUTEX_NORMAL);
/**
* Destructor
*/
virtual ~Mutex();
MutexType getMutexType() const { return _mutexType; }
/**
* Lock the mutex
*
* @return 0 if normal, -1 if errno set, errno code otherwise.
*/
virtual int lock();
/**
* Unlock the mutex
*
* @return 0 if normal, -1 if errno set, errno code otherwise.
*/
virtual int unlock();
/**
* Test if mutex can be locked.
*
* @return 0 if normal, -1 if errno set, errno code otherwise.
*/
virtual int trylock();
private:
/**
* Private copy constructor, to prevent tampering.
*/
Mutex(const Mutex &/*m*/) {};
/**
* Private copy assignment, to prevent tampering.
*/
Mutex &operator=(const Mutex &/*m*/) {return *(this);};
/**
* Implementation-specific private data.
*/
void *_prvData;
MutexType _mutexType;
};
}
#endif // _OPENTHREADS_MUTEX_
|