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1/*
2 * Copyright (C) 2007-2008 Xagasoft, All rights reserved.
3 *
4 * This file is part of the libbu++ library and is released under the
5 * terms of the license contained in the file LICENSE.
6 */
7
8#ifndef BU_ITO_COUNTER_H
9#define BU_ITO_COUNTER_H
10
11#include "itomutex.h"
12
13namespace Bu
14{
15 /**
16 * A simple thread-safe counter class. This is handy for assigning unique
17 * IDs to objects that are being created in different threads.
18 *@author Mike Buland
19 *@ingroup Threading Containers
20 */
21 template <class T>
22 class ItoCounter
23 {
24 public:
25 ItoCounter() :
26 tCounter( 0 )
27 {
28 }
29
30 virtual ~ItoCounter()
31 {
32 }
33
34 T next()
35 {
36 mOperate.lock();
37 T tRet = tCounter;
38 tCounter++;
39 mOperate.unlock();
40
41 return tRet;
42 }
43
44 private:
45 T tCounter; /**< The counter itself. */
46 ItoMutex mOperate; /**< The master mutex, used on all operations. */
47 };
48}
49
50#endif