This file is indexed.

/usr/include/OpenThreads/Block is in libopenthreads-dev 3.2.0~rc1-4.

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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
/* -*-c++-*- OpenThreads - Copyright (C) 1998-2007 Robert Osfield
 *
 * 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.
*/

#ifndef _OPENTHREADS_BLOCK_
#define _OPENTHREADS_BLOCK_

#include <OpenThreads/Thread>
#include <OpenThreads/Barrier>
#include <OpenThreads/Condition>
#include <OpenThreads/ScopedLock>

namespace OpenThreads {

/** Block is a block that can be used to halt a thread that is waiting another thread to release it.*/
class Block
{
    public:

        Block():
            _released(false) {}

        ~Block()
        {
            release();
        }

        inline bool block()
        {
            ScopedLock<OpenThreads::Mutex> mutlock(_mut);
            if( !_released )
            {
                return _cond.wait(&_mut)==0;
            }
            else
            {
                return true;
            }
        }

        inline bool block(unsigned long timeout)
        {
            ScopedLock<OpenThreads::Mutex> mutlock(_mut);
            if( !_released )
            {
                return _cond.wait(&_mut, timeout)==0;
            }
            else
            {
                return true;
            }
        }

        inline void release()
        {
            ScopedLock<OpenThreads::Mutex> mutlock(_mut);
            if (!_released)
            {
                _released = true;
                _cond.broadcast();
            }
        }

        inline void reset()
        {
            ScopedLock<OpenThreads::Mutex> mutlock(_mut);
            _released = false;
        }

        inline void set(bool doRelease)
        {
            if (doRelease!=_released)
            {
                if (doRelease) release();
                else reset();
            }
        }

    protected:

        Mutex _mut;
        Condition _cond;
        bool _released;

    private:

        Block(const Block&) {}
};

/** BlockCount is a block that can be used to halt a thread that is waiting for a specified number of operations to be completed.*/
class BlockCount
{
    public:

        BlockCount(unsigned int blockCount):
            _blockCount(blockCount),
            _currentCount(0) {}

        ~BlockCount()
        {
            _blockCount = 0;
            release();
        }

        inline void completed()
        {
            OpenThreads::ScopedLock<OpenThreads::Mutex> mutlock(_mut);
            if (_currentCount>0)
            {
                --_currentCount;

                if (_currentCount==0)
                {
                    // osg::notify(osg::NOTICE)<<"Released"<<std::endl;
                    _cond.broadcast();
                }
            }
        }

        inline void block()
        {
            OpenThreads::ScopedLock<OpenThreads::Mutex> mutlock(_mut);
            if (_currentCount)
                _cond.wait(&_mut);
        }

        inline void reset()
        {
            OpenThreads::ScopedLock<OpenThreads::Mutex> mutlock(_mut);
            if (_currentCount!=_blockCount)
            {
                if (_blockCount==0) _cond.broadcast();
                _currentCount = _blockCount;
            }
        }

        inline void release()
        {
            OpenThreads::ScopedLock<OpenThreads::Mutex> mutlock(_mut);
            if (_currentCount)
            {
                _currentCount = 0;
                _cond.broadcast();
            }
        }

        inline void setBlockCount(unsigned int blockCount) { _blockCount = blockCount; }

        inline unsigned int getBlockCount() const { return _blockCount; }

        inline unsigned int getCurrentCount() const { return _currentCount; }

    protected:

        OpenThreads::Mutex _mut;
        OpenThreads::Condition _cond;
        unsigned int _blockCount;
        unsigned int _currentCount;

    private:

        BlockCount(const BlockCount&) {}

};

}

#endif