root/trunk/dep/src/zthread/win32/TSS.h @ 2

Revision 2, 2.5 kB (checked in by yumileroy, 17 years ago)

[svn] * Proper SVN structure

Original author: Neo2003
Date: 2008-10-02 16:23:55-05:00
Line 
1/*
2 * Copyright (c) 2005, Eric Crahen
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is furnished
9 * to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in all
12 * copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 *
21 */
22
23#ifndef __ZTTSS_H__
24#define __ZTTSS_H__
25
26#include <windows.h>
27
28namespace ZThread {
29
30  /**
31   * @class TSS
32   * @author Eric Crahen <http://www.code-foo.com>
33   * @date <2003-07-27T14:18:43-0400>
34   * @version 2.3.0
35   *
36   * An abstraction for dealing with WIN32 thread specific storage (tss).
37   * Provides get/set and creation/destruction.
38   */
39  template <typename T>
40    class TSS {
41 
42    DWORD _key;
43    bool _valid;
44
45    public:
46
47    /**
48     * Create a new object for accessing tss. The def
49     */
50    TSS() {
51
52      _key = ::TlsAlloc();
53      _valid = (_key != 0xFFFFFFFF);
54
55    }
56
57    /**
58     * Destroy the underlying supoprt for accessing tss with this
59     * object.
60     */
61    virtual ~TSS() {
62 
63      if(_valid) 
64        ::TlsFree(_key);
65   
66    }
67 
68    /**
69     * Get the value stored in tss.
70     *
71     * @return T
72     *
73     * @exception InvalidOp_exception thrown when the tss is not properly initialized
74     */
75    inline T get() const {
76
77      if(!_valid)
78        throw InvalidOp_Exception();
79
80      return static_cast<T>(::TlsGetValue(_key));
81
82    }
83
84    /**
85     * Store a value in tss.
86     *
87     * @param value T
88     * @return T old value
89     *
90     * @exception InvalidOp_exception thrown when the tss is not properly initialized
91     */
92    inline T set(T value) const {
93
94      T oldValue = get();
95      ::TlsSetValue(_key, value);
96
97      return oldValue;
98
99    }
100 
101 
102  };
103
104}
105
106#endif
107
108
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