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1 | // |
2 | // boost/signals2/detail/lwm_pthreads.hpp | |
3 | // | |
4 | // Copyright (c) 2002 Peter Dimov and Multi Media Ltd. | |
5 | // Copyright (c) 2008 Frank Mori Hess | |
6 | // | |
7 | // Distributed under the Boost Software License, Version 1.0. (See | |
8 | // accompanying file LICENSE_1_0.txt or copy at | |
9 | // http://www.boost.org/LICENSE_1_0.txt) | |
10 | // | |
11 | ||
12 | #ifndef BOOST_SIGNALS2_LWM_PTHREADS_HPP | |
13 | #define BOOST_SIGNALS2_LWM_PTHREADS_HPP | |
14 | ||
15 | // MS compatible compilers support #pragma once | |
16 | ||
17 | #if defined(_MSC_VER) | |
18 | # pragma once | |
19 | #endif | |
20 | ||
21 | #include <boost/assert.hpp> | |
22 | #include <pthread.h> | |
23 | ||
24 | namespace boost | |
25 | { | |
26 | ||
27 | namespace signals2 | |
28 | { | |
29 | ||
30 | class mutex | |
31 | { | |
32 | private: | |
33 | ||
34 | pthread_mutex_t m_; | |
35 | ||
36 | mutex(mutex const &); | |
37 | mutex & operator=(mutex const &); | |
38 | ||
39 | public: | |
40 | ||
41 | mutex() | |
42 | { | |
43 | ||
44 | // HPUX 10.20 / DCE has a nonstandard pthread_mutex_init | |
45 | ||
46 | #if defined(__hpux) && defined(_DECTHREADS_) | |
47 | BOOST_VERIFY(pthread_mutex_init(&m_, pthread_mutexattr_default) == 0); | |
48 | #else | |
49 | BOOST_VERIFY(pthread_mutex_init(&m_, 0) == 0); | |
50 | #endif | |
51 | } | |
52 | ||
53 | ~mutex() | |
54 | { | |
55 | BOOST_VERIFY(pthread_mutex_destroy(&m_) == 0); | |
56 | } | |
57 | ||
58 | void lock() | |
59 | { | |
60 | BOOST_VERIFY(pthread_mutex_lock(&m_) == 0); | |
61 | } | |
62 | ||
63 | bool try_lock() | |
64 | { | |
65 | return pthread_mutex_trylock(&m_) == 0; | |
66 | } | |
67 | ||
68 | void unlock() | |
69 | { | |
70 | BOOST_VERIFY(pthread_mutex_unlock(&m_) == 0); | |
71 | } | |
72 | }; | |
73 | ||
74 | } // namespace signals2 | |
75 | ||
76 | } // namespace boost | |
77 | ||
78 | #endif // #ifndef BOOST_SIGNALS2_LWM_PTHREADS_HPP |