1 | #ifndef BOOST_THREAD_THREAD_COMMON_HPP
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2 | #define BOOST_THREAD_THREAD_COMMON_HPP
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3 | // Distributed under the Boost Software License, Version 1.0. (See
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4 | // accompanying file LICENSE_1_0.txt or copy at
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5 | // http://www.boost.org/LICENSE_1_0.txt)
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6 | // (C) Copyright 2007-8 Anthony Williams
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7 |
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8 | #include <boost/thread/exceptions.hpp>
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9 | #include <ostream>
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10 | #include <boost/thread/detail/move.hpp>
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11 | #include <boost/thread/mutex.hpp>
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12 | #include <boost/thread/xtime.hpp>
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13 | #include <boost/thread/detail/thread_heap_alloc.hpp>
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14 | #include <boost/utility.hpp>
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15 | #include <boost/assert.hpp>
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16 | #include <list>
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17 | #include <algorithm>
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18 | #include <boost/ref.hpp>
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19 | #include <boost/cstdint.hpp>
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20 | #include <boost/bind.hpp>
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21 | #include <stdlib.h>
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22 | #include <memory>
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23 | #include <boost/utility/enable_if.hpp>
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24 | #include <boost/type_traits/remove_reference.hpp>
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25 |
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26 | #include <boost/config/abi_prefix.hpp>
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27 |
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28 | #ifdef BOOST_MSVC
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29 | #pragma warning(push)
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30 | #pragma warning(disable:4251)
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31 | #endif
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32 |
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33 | namespace boost
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34 | {
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35 | namespace detail
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36 | {
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37 | template<typename F>
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38 | class thread_data:
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39 | public detail::thread_data_base
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40 | {
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41 | public:
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42 | #ifdef BOOST_HAS_RVALUE_REFS
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43 | thread_data(F&& f_):
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44 | f(static_cast<F&&>(f_))
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45 | {}
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46 | #else
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47 | thread_data(F f_):
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48 | f(f_)
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49 | {}
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50 | thread_data(detail::thread_move_t<F> f_):
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51 | f(f_)
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52 | {}
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53 | #endif
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54 | void run()
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55 | {
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56 | f();
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57 | }
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58 | private:
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59 | F f;
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60 |
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61 | void operator=(thread_data&);
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62 | thread_data(thread_data&);
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63 | };
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64 |
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65 | template<typename F>
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66 | class thread_data<boost::reference_wrapper<F> >:
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67 | public detail::thread_data_base
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68 | {
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69 | private:
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70 | F& f;
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71 |
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72 | void operator=(thread_data&);
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73 | thread_data(thread_data&);
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74 | public:
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75 | thread_data(boost::reference_wrapper<F> f_):
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76 | f(f_)
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77 | {}
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78 |
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79 | void run()
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80 | {
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81 | f();
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82 | }
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83 | };
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84 |
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85 | template<typename F>
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86 | class thread_data<const boost::reference_wrapper<F> >:
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87 | public detail::thread_data_base
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88 | {
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89 | private:
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90 | F& f;
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91 | void operator=(thread_data&);
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92 | thread_data(thread_data&);
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93 | public:
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94 | thread_data(const boost::reference_wrapper<F> f_):
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95 | f(f_)
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96 | {}
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97 |
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98 | void run()
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99 | {
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100 | f();
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101 | }
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102 | };
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103 | }
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104 |
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105 | class BOOST_THREAD_DECL thread
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106 | {
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107 | private:
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108 | thread(thread&);
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109 | thread& operator=(thread&);
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110 |
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111 | void release_handle();
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112 |
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113 | mutable boost::mutex thread_info_mutex;
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114 | detail::thread_data_ptr thread_info;
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115 |
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116 | void start_thread();
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117 |
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118 | explicit thread(detail::thread_data_ptr data);
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119 |
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120 | detail::thread_data_ptr get_thread_info() const;
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121 |
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122 | #ifdef BOOST_HAS_RVALUE_REFS
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123 | template<typename F>
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124 | static inline detail::thread_data_ptr make_thread_info(F&& f)
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125 | {
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126 | return detail::thread_data_ptr(detail::heap_new<detail::thread_data<typename boost::remove_reference<F>::type> >(static_cast<F&&>(f)));
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127 | }
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128 | static inline detail::thread_data_ptr make_thread_info(void (*f)())
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129 | {
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130 | return detail::thread_data_ptr(detail::heap_new<detail::thread_data<void(*)()> >(f));
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131 | }
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132 | #else
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133 | template<typename F>
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134 | static inline detail::thread_data_ptr make_thread_info(F f)
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135 | {
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136 | return detail::thread_data_ptr(detail::heap_new<detail::thread_data<F> >(f));
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137 | }
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138 | template<typename F>
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139 | static inline detail::thread_data_ptr make_thread_info(boost::detail::thread_move_t<F> f)
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140 | {
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141 | return detail::thread_data_ptr(detail::heap_new<detail::thread_data<F> >(f));
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142 | }
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143 |
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144 | struct dummy;
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145 | #endif
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146 | public:
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147 | thread();
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148 | ~thread();
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149 |
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150 | #ifdef BOOST_HAS_RVALUE_REFS
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151 | template <class F>
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152 | thread(F&& f):
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153 | thread_info(make_thread_info(static_cast<F&&>(f)))
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154 | {
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155 | start_thread();
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156 | }
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157 |
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158 | thread(thread&& other)
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159 | {
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160 | thread_info.swap(other.thread_info);
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161 | }
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162 |
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163 | thread& operator=(thread&& other)
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164 | {
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165 | thread_info=other.thread_info;
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166 | other.thread_info.reset();
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167 | return *this;
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168 | }
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169 |
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170 | thread&& move()
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171 | {
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172 | return static_cast<thread&&>(*this);
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173 | }
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174 |
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175 | #else
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176 | #ifdef BOOST_NO_SFINAE
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177 | template <class F>
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178 | explicit thread(F f):
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179 | thread_info(make_thread_info(f))
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180 | {
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181 | start_thread();
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182 | }
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183 | #else
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184 | template <class F>
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185 | explicit thread(F f,typename disable_if<boost::is_convertible<F&,detail::thread_move_t<F> >, dummy* >::type=0):
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186 | thread_info(make_thread_info(f))
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187 | {
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188 | start_thread();
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189 | }
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190 | #endif
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191 |
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192 | template <class F>
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193 | explicit thread(detail::thread_move_t<F> f):
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194 | thread_info(make_thread_info(f))
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195 | {
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196 | start_thread();
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197 | }
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198 |
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199 | thread(detail::thread_move_t<thread> x)
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200 | {
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201 | thread_info=x->thread_info;
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202 | x->thread_info.reset();
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203 | }
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204 |
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205 | thread& operator=(detail::thread_move_t<thread> x)
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206 | {
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207 | thread new_thread(x);
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208 | swap(new_thread);
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209 | return *this;
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210 | }
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211 |
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212 | operator detail::thread_move_t<thread>()
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213 | {
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214 | return move();
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215 | }
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216 |
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217 | detail::thread_move_t<thread> move()
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218 | {
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219 | detail::thread_move_t<thread> x(*this);
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220 | return x;
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221 | }
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222 |
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223 | #endif
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224 |
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225 | template <class F,class A1>
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226 | thread(F f,A1 a1):
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227 | thread_info(make_thread_info(boost::bind(boost::type<void>(),f,a1)))
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228 | {
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229 | start_thread();
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230 | }
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231 | template <class F,class A1,class A2>
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232 | thread(F f,A1 a1,A2 a2):
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233 | thread_info(make_thread_info(boost::bind(boost::type<void>(),f,a1,a2)))
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234 | {
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235 | start_thread();
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236 | }
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237 |
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238 | template <class F,class A1,class A2,class A3>
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239 | thread(F f,A1 a1,A2 a2,A3 a3):
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240 | thread_info(make_thread_info(boost::bind(boost::type<void>(),f,a1,a2,a3)))
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241 | {
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242 | start_thread();
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243 | }
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244 |
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245 | template <class F,class A1,class A2,class A3,class A4>
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246 | thread(F f,A1 a1,A2 a2,A3 a3,A4 a4):
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247 | thread_info(make_thread_info(boost::bind(boost::type<void>(),f,a1,a2,a3,a4)))
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248 | {
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249 | start_thread();
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250 | }
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251 |
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252 | template <class F,class A1,class A2,class A3,class A4,class A5>
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253 | thread(F f,A1 a1,A2 a2,A3 a3,A4 a4,A5 a5):
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254 | thread_info(make_thread_info(boost::bind(boost::type<void>(),f,a1,a2,a3,a4,a5)))
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255 | {
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256 | start_thread();
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257 | }
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258 |
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259 | template <class F,class A1,class A2,class A3,class A4,class A5,class A6>
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260 | thread(F f,A1 a1,A2 a2,A3 a3,A4 a4,A5 a5,A6 a6):
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261 | thread_info(make_thread_info(boost::bind(boost::type<void>(),f,a1,a2,a3,a4,a5,a6)))
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262 | {
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263 | start_thread();
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264 | }
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265 |
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266 | template <class F,class A1,class A2,class A3,class A4,class A5,class A6,class A7>
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267 | thread(F f,A1 a1,A2 a2,A3 a3,A4 a4,A5 a5,A6 a6,A7 a7):
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268 | thread_info(make_thread_info(boost::bind(boost::type<void>(),f,a1,a2,a3,a4,a5,a6,a7)))
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269 | {
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270 | start_thread();
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271 | }
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272 |
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273 | template <class F,class A1,class A2,class A3,class A4,class A5,class A6,class A7,class A8>
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274 | thread(F f,A1 a1,A2 a2,A3 a3,A4 a4,A5 a5,A6 a6,A7 a7,A8 a8):
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275 | thread_info(make_thread_info(boost::bind(boost::type<void>(),f,a1,a2,a3,a4,a5,a6,a7,a8)))
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276 | {
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277 | start_thread();
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278 | }
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279 |
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280 | template <class F,class A1,class A2,class A3,class A4,class A5,class A6,class A7,class A8,class A9>
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281 | thread(F f,A1 a1,A2 a2,A3 a3,A4 a4,A5 a5,A6 a6,A7 a7,A8 a8,A9 a9):
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282 | thread_info(make_thread_info(boost::bind(boost::type<void>(),f,a1,a2,a3,a4,a5,a6,a7,a8,a9)))
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283 | {
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284 | start_thread();
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285 | }
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286 |
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287 | void swap(thread& x)
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288 | {
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289 | thread_info.swap(x.thread_info);
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290 | }
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291 |
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292 | class id;
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293 | id get_id() const;
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294 |
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295 |
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296 | bool joinable() const;
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297 | void join();
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298 | bool timed_join(const system_time& wait_until);
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299 |
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300 | template<typename TimeDuration>
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301 | inline bool timed_join(TimeDuration const& rel_time)
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302 | {
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303 | return timed_join(get_system_time()+rel_time);
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304 | }
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305 | void detach();
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306 |
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307 | static unsigned hardware_concurrency();
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308 |
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309 | typedef detail::thread_data_base::native_handle_type native_handle_type;
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310 | native_handle_type native_handle();
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311 |
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312 | // backwards compatibility
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313 | bool operator==(const thread& other) const;
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314 | bool operator!=(const thread& other) const;
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315 |
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316 | static inline void yield()
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317 | {
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318 | this_thread::yield();
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319 | }
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320 |
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321 | static inline void sleep(const system_time& xt)
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322 | {
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323 | this_thread::sleep(xt);
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324 | }
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325 |
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326 | // extensions
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327 | void interrupt();
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328 | bool interruption_requested() const;
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329 | };
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330 |
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331 | inline void swap(thread& lhs,thread& rhs)
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332 | {
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333 | return lhs.swap(rhs);
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334 | }
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335 |
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336 | #ifdef BOOST_HAS_RVALUE_REFS
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337 | inline thread&& move(thread&& t)
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338 | {
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339 | return t;
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340 | }
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341 | #else
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342 | inline thread move(detail::thread_move_t<thread> t)
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343 | {
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344 | return thread(t);
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345 | }
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346 | #endif
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347 |
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348 | namespace this_thread
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349 | {
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350 | class BOOST_THREAD_DECL disable_interruption
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351 | {
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352 | disable_interruption(const disable_interruption&);
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353 | disable_interruption& operator=(const disable_interruption&);
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354 |
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355 | bool interruption_was_enabled;
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356 | friend class restore_interruption;
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357 | public:
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358 | disable_interruption();
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359 | ~disable_interruption();
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360 | };
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361 |
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362 | class BOOST_THREAD_DECL restore_interruption
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363 | {
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364 | restore_interruption(const restore_interruption&);
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365 | restore_interruption& operator=(const restore_interruption&);
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366 | public:
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367 | explicit restore_interruption(disable_interruption& d);
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368 | ~restore_interruption();
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369 | };
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370 |
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371 | thread::id BOOST_THREAD_DECL get_id();
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372 |
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373 | void BOOST_THREAD_DECL interruption_point();
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374 | bool BOOST_THREAD_DECL interruption_enabled();
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375 | bool BOOST_THREAD_DECL interruption_requested();
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376 |
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377 | inline void sleep(xtime const& abs_time)
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378 | {
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379 | sleep(system_time(abs_time));
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380 | }
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381 | }
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382 |
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383 | class thread::id
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384 | {
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385 | private:
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386 | detail::thread_data_ptr thread_data;
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387 |
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388 | id(detail::thread_data_ptr thread_data_):
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389 | thread_data(thread_data_)
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390 | {}
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391 | friend class thread;
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392 | friend id this_thread::get_id();
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393 | public:
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394 | id():
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395 | thread_data()
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396 | {}
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397 |
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398 | bool operator==(const id& y) const
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399 | {
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400 | return thread_data==y.thread_data;
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401 | }
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402 |
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403 | bool operator!=(const id& y) const
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404 | {
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405 | return thread_data!=y.thread_data;
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406 | }
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407 |
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408 | bool operator<(const id& y) const
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409 | {
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410 | return thread_data<y.thread_data;
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411 | }
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412 |
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413 | bool operator>(const id& y) const
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414 | {
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415 | return y.thread_data<thread_data;
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416 | }
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417 |
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418 | bool operator<=(const id& y) const
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419 | {
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420 | return !(y.thread_data<thread_data);
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421 | }
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422 |
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423 | bool operator>=(const id& y) const
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424 | {
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425 | return !(thread_data<y.thread_data);
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426 | }
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427 |
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428 | template<class charT, class traits>
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429 | friend std::basic_ostream<charT, traits>&
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430 | operator<<(std::basic_ostream<charT, traits>& os, const id& x)
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431 | {
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432 | if(x.thread_data)
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433 | {
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434 | return os<<x.thread_data;
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435 | }
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436 | else
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437 | {
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438 | return os<<"{Not-any-thread}";
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439 | }
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440 | }
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441 | };
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442 |
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443 | inline bool thread::operator==(const thread& other) const
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444 | {
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445 | return get_id()==other.get_id();
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446 | }
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447 |
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448 | inline bool thread::operator!=(const thread& other) const
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449 | {
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450 | return get_id()!=other.get_id();
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451 | }
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452 |
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453 | namespace detail
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454 | {
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455 | struct thread_exit_function_base
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456 | {
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457 | virtual ~thread_exit_function_base()
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458 | {}
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459 | virtual void operator()() =0;
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460 | };
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461 |
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462 | template<typename F>
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463 | struct thread_exit_function:
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464 | thread_exit_function_base
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465 | {
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466 | F f;
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467 |
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468 | thread_exit_function(F f_):
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469 | f(f_)
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470 | {}
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471 |
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472 | void operator()()
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473 | {
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474 | f();
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475 | }
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476 | };
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477 |
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478 | void add_thread_exit_function(thread_exit_function_base*);
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479 | }
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480 |
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481 | namespace this_thread
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482 | {
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483 | template<typename F>
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484 | void at_thread_exit(F f)
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485 | {
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486 | detail::thread_exit_function_base* const thread_exit_func=detail::heap_new<detail::thread_exit_function<F> >(f);
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487 | detail::add_thread_exit_function(thread_exit_func);
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488 | }
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489 | }
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490 |
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491 | class thread_group:
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492 | private noncopyable
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493 | {
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494 | public:
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495 | ~thread_group()
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496 | {
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497 | for(std::list<thread*>::iterator it=threads.begin(),end=threads.end();
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---|
498 | it!=end;
|
---|
499 | ++it)
|
---|
500 | {
|
---|
501 | delete *it;
|
---|
502 | }
|
---|
503 | }
|
---|
504 |
|
---|
505 | template<typename F>
|
---|
506 | thread* create_thread(F threadfunc)
|
---|
507 | {
|
---|
508 | boost::lock_guard<mutex> guard(m);
|
---|
509 | std::auto_ptr<thread> new_thread(new thread(threadfunc));
|
---|
510 | threads.push_back(new_thread.get());
|
---|
511 | return new_thread.release();
|
---|
512 | }
|
---|
513 |
|
---|
514 | void add_thread(thread* thrd)
|
---|
515 | {
|
---|
516 | if(thrd)
|
---|
517 | {
|
---|
518 | boost::lock_guard<mutex> guard(m);
|
---|
519 | threads.push_back(thrd);
|
---|
520 | }
|
---|
521 | }
|
---|
522 |
|
---|
523 | void remove_thread(thread* thrd)
|
---|
524 | {
|
---|
525 | boost::lock_guard<mutex> guard(m);
|
---|
526 | std::list<thread*>::iterator const it=std::find(threads.begin(),threads.end(),thrd);
|
---|
527 | if(it!=threads.end())
|
---|
528 | {
|
---|
529 | threads.erase(it);
|
---|
530 | }
|
---|
531 | }
|
---|
532 |
|
---|
533 | void join_all()
|
---|
534 | {
|
---|
535 | boost::lock_guard<mutex> guard(m);
|
---|
536 |
|
---|
537 | for(std::list<thread*>::iterator it=threads.begin(),end=threads.end();
|
---|
538 | it!=end;
|
---|
539 | ++it)
|
---|
540 | {
|
---|
541 | (*it)->join();
|
---|
542 | }
|
---|
543 | }
|
---|
544 |
|
---|
545 | void interrupt_all()
|
---|
546 | {
|
---|
547 | boost::lock_guard<mutex> guard(m);
|
---|
548 |
|
---|
549 | for(std::list<thread*>::iterator it=threads.begin(),end=threads.end();
|
---|
550 | it!=end;
|
---|
551 | ++it)
|
---|
552 | {
|
---|
553 | (*it)->interrupt();
|
---|
554 | }
|
---|
555 | }
|
---|
556 |
|
---|
557 | size_t size() const
|
---|
558 | {
|
---|
559 | boost::lock_guard<mutex> guard(m);
|
---|
560 | return threads.size();
|
---|
561 | }
|
---|
562 |
|
---|
563 | private:
|
---|
564 | std::list<thread*> threads;
|
---|
565 | mutable mutex m;
|
---|
566 | };
|
---|
567 | }
|
---|
568 |
|
---|
569 | #ifdef BOOST_MSVC
|
---|
570 | #pragma warning(pop)
|
---|
571 | #endif
|
---|
572 |
|
---|
573 | #include <boost/config/abi_suffix.hpp>
|
---|
574 |
|
---|
575 | #endif
|
---|