/usr/include/gnelib/Counter.h is in libgnelib-dev 0.75+svn20091130-1.
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 | #ifndef COUNTER_H_INCLUDED_C517BD95
#define COUNTER_H_INCLUDED_C517BD95
/* GNE - Game Networking Engine, a portable multithreaded networking library.
* Copyright (C) 2001-2006 Jason Winnebeck
* Project website: http://www.gillius.org/gne/
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* 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 GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <gnelib/TimerCallback.h>
#include <gnelib/ConditionVariable.h>
namespace GNE {
/**
* @ingroup threading
*
* An implementation of a TimerCallback that provides a simple counter. All
* of the functions in this class are thread-safe so that multiple threads
* can be accessing the Counter at the same time.
*/
class Counter : public TimerCallback {
protected:
Counter();
public:
typedef SmartPtr<Counter> sptr;
typedef WeakPtr<Counter> wptr;
/**
* Create a Counter. Pass this Counter into a Timer class to use it.
* @see TimerCallback
*/
static sptr create();
/**
* Destructor.
*/
virtual ~Counter();
/**
* The callback function that the Timer calls. You should not call this
* function directly.
*/
void timerCallback();
/**
* Returns the current count of this Counter.
*/
int getCount();
/**
* Sets the current count to newCount.
* @param newCount the new value for the Counter
*/
void setCount(int newCount);
/**
* Adjusts the counter's value by adding val to the current count. This
* means that negative numbers will subtract from the current count.
*/
void adjustCount(int val);
/**
* This method blocks until the count is greater than zero. If the count
* is already greater than zero it returns immediately. In either case, the
* value of the counter is decremented.
*/
void waitAndDecrement();
private:
int count;
ConditionVariable countSync;
};
}
#endif /* COUNTER_H_INCLUDED_C517BD95 */
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