1 | #ifndef BOOST_DETAIL_LIGHTWEIGHT_THREAD_HPP_INCLUDED |
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2 | #define BOOST_DETAIL_LIGHTWEIGHT_THREAD_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 | // boost/detail/lightweight_thread.hpp |
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11 | // |
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12 | // Copyright (c) 2002 Peter Dimov and Multi Media Ltd. |
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13 | // Copyright (c) 2008 Peter Dimov |
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14 | // |
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15 | // Distributed under the Boost Software License, Version 1.0. |
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16 | // See 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 | #include <boost/config.hpp> |
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20 | #include <memory> |
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21 | #include <cerrno> |
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22 | |
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23 | // pthread_create, pthread_join |
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24 | |
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25 | #if defined( BOOST_HAS_PTHREADS ) |
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26 | |
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27 | #include <pthread.h> |
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28 | |
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29 | #else |
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30 | |
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31 | #include <windows.h> |
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32 | #include <process.h> |
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33 | |
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34 | typedef HANDLE pthread_t; |
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35 | |
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36 | int pthread_create( pthread_t * thread, void const *, unsigned (__stdcall * start_routine) (void*), void* arg ) |
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37 | { |
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38 | HANDLE h = (HANDLE)_beginthreadex( 0, 0, start_routine, arg, 0, 0 ); |
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39 | |
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40 | if( h != 0 ) |
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41 | { |
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42 | *thread = h; |
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43 | return 0; |
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44 | } |
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45 | else |
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46 | { |
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47 | return EAGAIN; |
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48 | } |
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49 | } |
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50 | |
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51 | int pthread_join( pthread_t thread, void ** /*value_ptr*/ ) |
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52 | { |
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53 | ::WaitForSingleObject( thread, INFINITE ); |
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54 | ::CloseHandle( thread ); |
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55 | return 0; |
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56 | } |
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57 | |
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58 | #endif |
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59 | |
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60 | // template<class F> int lw_thread_create( pthread_t & pt, F f ); |
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61 | |
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62 | namespace boost |
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63 | { |
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64 | |
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65 | namespace detail |
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66 | { |
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67 | |
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68 | class lw_abstract_thread |
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69 | { |
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70 | public: |
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71 | |
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72 | virtual ~lw_abstract_thread() {} |
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73 | virtual void run() = 0; |
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74 | }; |
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75 | |
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76 | #if defined( BOOST_HAS_PTHREADS ) |
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77 | |
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78 | extern "C" void * lw_thread_routine( void * pv ) |
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79 | { |
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80 | std::auto_ptr<lw_abstract_thread> pt( static_cast<lw_abstract_thread *>( pv ) ); |
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81 | |
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82 | pt->run(); |
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83 | |
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84 | return 0; |
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85 | } |
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86 | |
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87 | #else |
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88 | |
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89 | unsigned __stdcall lw_thread_routine( void * pv ) |
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90 | { |
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91 | std::auto_ptr<lw_abstract_thread> pt( static_cast<lw_abstract_thread *>( pv ) ); |
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92 | |
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93 | pt->run(); |
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94 | |
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95 | return 0; |
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96 | } |
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97 | |
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98 | #endif |
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99 | |
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100 | template<class F> class lw_thread_impl: public lw_abstract_thread |
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101 | { |
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102 | public: |
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103 | |
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104 | explicit lw_thread_impl( F f ): f_( f ) |
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105 | { |
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106 | } |
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107 | |
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108 | void run() |
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109 | { |
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110 | f_(); |
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111 | } |
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112 | |
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113 | private: |
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114 | |
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115 | F f_; |
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116 | }; |
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117 | |
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118 | template<class F> int lw_thread_create( pthread_t & pt, F f ) |
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119 | { |
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120 | std::auto_ptr<lw_abstract_thread> p( new lw_thread_impl<F>( f ) ); |
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121 | |
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122 | int r = pthread_create( &pt, 0, lw_thread_routine, p.get() ); |
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123 | |
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124 | if( r == 0 ) |
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125 | { |
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126 | p.release(); |
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127 | } |
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128 | |
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129 | return r; |
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130 | } |
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131 | |
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132 | } // namespace detail |
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133 | } // namespace boost |
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134 | |
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135 | #endif // #ifndef BOOST_DETAIL_LIGHTWEIGHT_THREAD_HPP_INCLUDED |
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