libstdc++-v3/src/thread.cc

   1 // thread -*- C++ -*-
   2
   3 // Copyright (C) 2008, 2009 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
  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   void
  56   thread::join()
  57   {
  58     int __e = EINVAL;
  59
  60     if (_M_id != id())
  61       __e = __gthread_join(_M_id._M_thread, NULL);
  62
  63     if (__e)
  64       __throw_system_error(__e);
  65
  66     _M_id = id();
  67   }
  68
  69   void
  70   thread::detach()
  71   {
  72     int __e = EINVAL;
  73
  74     if (_M_id != id())
  75       __e = __gthread_detach(_M_id._M_thread);
  76
  77     if (__e)
  78       __throw_system_error(__e);
  79
  80     _M_id = id();
  81   }
  82
  83   void
  84   thread::_M_start_thread(__shared_base_type __b)
  85   {
  86     if (!__gthread_active_p())
  87       __throw_system_error(int(errc::operation_not_permitted));
  88
  89     __b->_M_this_ptr = __b;
  90     int __e = __gthread_create(&_M_id._M_thread,
  91                                &execute_native_thread_routine, __b.get());
  92     if (__e)
  93     {
  94       __b->_M_this_ptr.reset();
  95       __throw_system_error(__e);
  96     }
  97   }
  98 }
  99
 100 #endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1