ceph/src/boost/libs/asio/include/boost/asio/detail/posix_thread.hpp

   1 //
   2 // detail/posix_thread.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10
  11 #ifndef BOOST_ASIO_DETAIL_POSIX_THREAD_HPP
  12 #define BOOST_ASIO_DETAIL_POSIX_THREAD_HPP
  13
  14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  15 # pragma once
  16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  17
  18 #include <boost/asio/detail/config.hpp>
  19
  20 #if defined(BOOST_ASIO_HAS_PTHREADS)
  21
  22 #include <pthread.h>
  23 #include <boost/asio/detail/noncopyable.hpp>
  24
  25 #include <boost/asio/detail/push_options.hpp>
  26
  27 namespace boost {
  28 namespace asio {
  29 namespace detail {
  30
  31 extern "C"
  32 {
  33   BOOST_ASIO_DECL void* boost_asio_detail_posix_thread_function(void* arg);
  34 }
  35
  36 class posix_thread
  37   : private noncopyable
  38 {
  39 public:
  40   // Constructor.
  41   template <typename Function>
  42   posix_thread(Function f, unsigned int = 0)
  43     : joined_(false)
  44   {
  45     start_thread(new func<Function>(f));
  46   }
  47
  48   // Destructor.
  49   BOOST_ASIO_DECL ~posix_thread();
  50
  51   // Wait for the thread to exit.
  52   BOOST_ASIO_DECL void join();
  53
  54 private:
  55   friend void* boost_asio_detail_posix_thread_function(void* arg);
  56
  57   class func_base
  58   {
  59   public:
  60     virtual ~func_base() {}
  61     virtual void run() = 0;
  62   };
  63
  64   struct auto_func_base_ptr
  65   {
  66     func_base* ptr;
  67     ~auto_func_base_ptr() { delete ptr; }
  68   };
  69
  70   template <typename Function>
  71   class func
  72     : public func_base
  73   {
  74   public:
  75     func(Function f)
  76       : f_(f)
  77     {
  78     }
  79
  80     virtual void run()
  81     {
  82       f_();
  83     }
  84
  85   private:
  86     Function f_;
  87   };
  88
  89   BOOST_ASIO_DECL void start_thread(func_base* arg);
  90
  91   ::pthread_t thread_;
  92   bool joined_;
  93 };
  94
  95 } // namespace detail
  96 } // namespace asio
  97 } // namespace boost
  98
  99 #include <boost/asio/detail/pop_options.hpp>
 100
 101 #if defined(BOOST_ASIO_HEADER_ONLY)
 102 # include <boost/asio/detail/impl/posix_thread.ipp>
 103 #endif // defined(BOOST_ASIO_HEADER_ONLY)
 104
 105 #endif // defined(BOOST_ASIO_HAS_PTHREADS)
 106
 107 #endif // BOOST_ASIO_DETAIL_POSIX_THREAD_HPP