libstdc++-v3/src/thread.cc

   1 // thread -*- C++ -*-
   2
   3 // Copyright (C) 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // Under Section 7 of GPL version 3, you are granted additional
  17 // permissions described in the GCC Runtime Library Exception, version
  18 // 3.1, as published by the Free Software Foundation.
  19
  20 // You should have received a copy of the GNU General Public License and
  21 // a copy of the GCC Runtime Library Exception along with this program;
  22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 // <http://www.gnu.org/licenses/>.
  24
  25
  26 #include <thread>
  27 #include <cerrno>
  28
  29 #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1)
  30
  31 namespace std _GLIBCXX_VISIBILITY(default)
  32 {
  33   namespace
  34   {
  35     extern "C" void*
  36     execute_native_thread_routine(void* __p)
  37     {
  38       thread::_Impl_base* __t = static_cast<thread::_Impl_base*>(__p);
  39       thread::__shared_base_type __local;
  40       __local.swap(__t->_M_this_ptr);
  41
  42       __try
  43         {
  44           __t->_M_run();
  45         }
  46       __catch(...)
  47         {
  48           std::terminate();
  49         }
  50
  51       return 0;
  52     }
  53   }
  54
  55 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  56
  57   thread::_Impl_base::~_Impl_base() = default;
  58
  59   void
  60   thread::join()
  61   {
  62     int __e = EINVAL;
  63
  64     if (_M_id != id())
  65       __e = __gthread_join(_M_id._M_thread, 0);
  66
  67     if (__e)
  68       __throw_system_error(__e);
  69
  70     _M_id = id();
  71   }
  72
  73   void
  74   thread::detach()
  75   {
  76     int __e = EINVAL;
  77
  78     if (_M_id != id())
  79       __e = __gthread_detach(_M_id._M_thread);
  80
  81     if (__e)
  82       __throw_system_error(__e);
  83
  84     _M_id = id();
  85   }
  86
  87   void
  88   thread::_M_start_thread(__shared_base_type __b)
  89   {
  90     if (!__gthread_active_p())
  91       __throw_system_error(int(errc::operation_not_permitted));
  92
  93     __b->_M_this_ptr = __b;
  94     int __e = __gthread_create(&_M_id._M_thread,
  95                                &execute_native_thread_routine, __b.get());
  96     if (__e)
  97     {
  98       __b->_M_this_ptr.reset();
  99       __throw_system_error(__e);
 100     }
 101   }
 102
 103 _GLIBCXX_END_NAMESPACE_VERSION
 104 } // namespace std
 105
 106 #endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1