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win_tss_ptr.hpp
1
2 //******************************************************************************
3 // RCF - Remote Call Framework
4 //
5 // Copyright (c) 2005 - 2013, Delta V Software. All rights reserved.
6 // http://www.deltavsoft.com
7 //
8 // RCF is distributed under dual licenses - closed source or GPL.
9 // Consult your particular license for conditions of use.
10 //
11 // If you have not purchased a commercial license, you are using RCF
12 // under GPL terms.
13 //
14 // Version: 2.0
15 // Contact: support <at> deltavsoft.com
16 //
17 //******************************************************************************
18
19 //
20 // detail/win_tss_ptr.hpp
21 // ~~~~~~~~~~~~~~~~~~~~~~
22 //
23 // Copyright (c) 2003-2011 Christopher M. Kohlhoff (chris at kohlhoff dot com)
24 //
25 // Distributed under the Boost Software License, Version 1.0. (See accompanying
26 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
27 //
28
29 #ifndef RCF_DETAIL_WIN_TSS_PTR_HPP
30 #define RCF_DETAIL_WIN_TSS_PTR_HPP
31
32 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
33 # pragma once
34 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
35
36 #if defined(BOOST_WINDOWS)
37
38 #include <RCF/thread/push_options.hpp>
39
40 namespace RCF {
41 namespace detail {
42
43 // Helper function to create thread-specific storage.
44 RCF_EXPORT DWORD win_tss_ptr_create();
45
46 template <typename T>
47 class win_tss_ptr
48 : private noncopyable
49 {
50 public:
51 // Constructor.
52 win_tss_ptr()
53 : tss_key_(win_tss_ptr_create())
54 {
55 }
56
57 // Destructor.
58 ~win_tss_ptr()
59 {
60 ::TlsFree(tss_key_);
61 }
62
63 // Get the value.
64 operator T*() const
65 {
66 return static_cast<T*>(::TlsGetValue(tss_key_));
67 }
68
69 // Set the value.
70 void operator=(T* value)
71 {
72 ::TlsSetValue(tss_key_, value);
73 }
74
75 private:
76 // Thread-specific storage to allow unlocked access to determine whether a
77 // thread is a member of the pool.
78 DWORD tss_key_;
79 };
80
81 } // namespace detail
82 } // namespace RCF
83
84 #include <RCF/thread/pop_options.hpp>
85
86 #endif // defined(BOOST_WINDOWS)
87
88 #endif // RCF_DETAIL_WIN_TSS_PTR_HPP