1 | #ifndef BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED |
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2 | #define BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED |
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3 | |
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4 | // MS compatible compilers support #pragma once |
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5 | |
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6 | #if defined(_MSC_VER) && (_MSC_VER >= 1020) |
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7 | # pragma once |
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8 | #endif |
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9 | |
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10 | // |
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11 | // boost/detail/lwm_pthreads.hpp |
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12 | // |
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13 | // Copyright (c) 2002 Peter Dimov and Multi Media Ltd. |
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14 | // |
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15 | // Distributed under the Boost Software License, Version 1.0. (See |
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16 | // accompanying file LICENSE_1_0.txt or copy at |
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17 | // http://www.boost.org/LICENSE_1_0.txt) |
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18 | // |
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19 | |
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20 | #include <boost/assert.hpp> |
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21 | #include <pthread.h> |
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22 | |
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23 | namespace boost |
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24 | { |
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25 | |
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26 | namespace detail |
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27 | { |
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28 | |
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29 | class lightweight_mutex |
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30 | { |
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31 | private: |
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32 | |
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33 | pthread_mutex_t m_; |
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34 | |
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35 | lightweight_mutex(lightweight_mutex const &); |
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36 | lightweight_mutex & operator=(lightweight_mutex const &); |
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37 | |
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38 | public: |
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39 | |
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40 | lightweight_mutex() |
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41 | { |
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42 | |
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43 | // HPUX 10.20 / DCE has a nonstandard pthread_mutex_init |
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44 | |
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45 | #if defined(__hpux) && defined(_DECTHREADS_) |
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46 | BOOST_VERIFY( pthread_mutex_init( &m_, pthread_mutexattr_default ) == 0 ); |
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47 | #else |
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48 | BOOST_VERIFY( pthread_mutex_init( &m_, 0 ) == 0 ); |
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49 | #endif |
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50 | } |
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51 | |
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52 | ~lightweight_mutex() |
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53 | { |
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54 | BOOST_VERIFY( pthread_mutex_destroy( &m_ ) == 0 ); |
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55 | } |
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56 | |
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57 | class scoped_lock; |
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58 | friend class scoped_lock; |
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59 | |
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60 | class scoped_lock |
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61 | { |
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62 | private: |
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63 | |
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64 | pthread_mutex_t & m_; |
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65 | |
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66 | scoped_lock(scoped_lock const &); |
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67 | scoped_lock & operator=(scoped_lock const &); |
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68 | |
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69 | public: |
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70 | |
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71 | scoped_lock(lightweight_mutex & m): m_(m.m_) |
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72 | { |
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73 | BOOST_VERIFY( pthread_mutex_lock( &m_ ) == 0 ); |
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74 | } |
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75 | |
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76 | ~scoped_lock() |
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77 | { |
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78 | BOOST_VERIFY( pthread_mutex_unlock( &m_ ) == 0 ); |
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79 | } |
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80 | }; |
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81 | }; |
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82 | |
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83 | } // namespace detail |
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84 | |
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85 | } // namespace boost |
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86 | |
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87 | #endif // #ifndef BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED |
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