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

   1 //
   2 // detail/win_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_WIN_THREAD_HPP
  12 #define BOOST_ASIO_DETAIL_WIN_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_WINDOWS) \
  21   && !defined(BOOST_ASIO_WINDOWS_APP) \
  22   && !defined(UNDER_CE)
  23
  24 #include <boost/asio/detail/noncopyable.hpp>
  25 #include <boost/asio/detail/socket_types.hpp>
  26
  27 #include <boost/asio/detail/push_options.hpp>
  28
  29 namespace boost {
  30 namespace asio {
  31 namespace detail {
  32
  33 BOOST_ASIO_DECL unsigned int __stdcall win_thread_function(void* arg);
  34
  35 #if defined(WINVER) && (WINVER < 0x0500)
  36 BOOST_ASIO_DECL void __stdcall apc_function(ULONG data);
  37 #else
  38 BOOST_ASIO_DECL void __stdcall apc_function(ULONG_PTR data);
  39 #endif
  40
  41 template <typename T>
  42 class win_thread_base
  43 {
  44 public:
  45   static bool terminate_threads()
  46   {
  47     return ::InterlockedExchangeAdd(&terminate_threads_, 0) != 0;
  48   }
  49
  50   static void set_terminate_threads(bool b)
  51   {
  52     ::InterlockedExchange(&terminate_threads_, b ? 1 : 0);
  53   }
  54
  55 private:
  56   static long terminate_threads_;
  57 };
  58
  59 template <typename T>
  60 long win_thread_base<T>::terminate_threads_ = 0;
  61
  62 class win_thread
  63   : private noncopyable,
  64     public win_thread_base<win_thread>
  65 {
  66 public:
  67   // Constructor.
  68   template <typename Function>
  69   win_thread(Function f, unsigned int stack_size = 0)
  70     : thread_(0),
  71       exit_event_(0)
  72   {
  73     start_thread(new func<Function>(f), stack_size);
  74   }
  75
  76   // Destructor.
  77   BOOST_ASIO_DECL ~win_thread();
  78
  79   // Wait for the thread to exit.
  80   BOOST_ASIO_DECL void join();
  81
  82 private:
  83   friend BOOST_ASIO_DECL unsigned int __stdcall win_thread_function(void* arg);
  84
  85 #if defined(WINVER) && (WINVER < 0x0500)
  86   friend BOOST_ASIO_DECL void __stdcall apc_function(ULONG);
  87 #else
  88   friend BOOST_ASIO_DECL void __stdcall apc_function(ULONG_PTR);
  89 #endif
  90
  91   class func_base
  92   {
  93   public:
  94     virtual ~func_base() {}
  95     virtual void run() = 0;
  96     ::HANDLE entry_event_;
  97     ::HANDLE exit_event_;
  98   };
  99
 100   struct auto_func_base_ptr
 101   {
 102     func_base* ptr;
 103     ~auto_func_base_ptr() { delete ptr; }
 104   };
 105
 106   template <typename Function>
 107   class func
 108     : public func_base
 109   {
 110   public:
 111     func(Function f)
 112       : f_(f)
 113     {
 114     }
 115
 116     virtual void run()
 117     {
 118       f_();
 119     }
 120
 121   private:
 122     Function f_;
 123   };
 124
 125   BOOST_ASIO_DECL void start_thread(func_base* arg, unsigned int stack_size);
 126
 127   ::HANDLE thread_;
 128   ::HANDLE exit_event_;
 129 };
 130
 131 } // namespace detail
 132 } // namespace asio
 133 } // namespace boost
 134
 135 #include <boost/asio/detail/pop_options.hpp>
 136
 137 #if defined(BOOST_ASIO_HEADER_ONLY)
 138 # include <boost/asio/detail/impl/win_thread.ipp>
 139 #endif // defined(BOOST_ASIO_HEADER_ONLY)
 140
 141 #endif // defined(BOOST_ASIO_WINDOWS)
 142        // && !defined(BOOST_ASIO_WINDOWS_APP)
 143        // && !defined(UNDER_CE)
 144
 145 #endif // BOOST_ASIO_DETAIL_WIN_THREAD_HPP