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1/*
2 * Copyright (C) 2007-2011 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 "mutex.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 *@ingroup Threading Containers
19 */
20 template <class T>
21 class ItoCounter
22 {
23 public:
24 ItoCounter() :
25 tCounter( 0 )
26 {
27 }
28
29 virtual ~ItoCounter()
30 {
31 }
32
33 T next()
34 {
35 mOperate.lock();
36 T tRet = tCounter;
37 tCounter++;
38 mOperate.unlock();
39
40 return tRet;
41 }
42
43 private:
44 T tCounter; /**< The counter itself. */
45 Mutex mOperate; /**< The master mutex, used on all operations. */
46 };
47}
48
49#endif