libstdc++-v3/src/condition_variable.cc

   1 // condition_variable -*- C++ -*-
   2
   3 // Copyright (C) 2008, 2009, 2010 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 #include <condition_variable>
  26
  27 #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1)
  28
  29 _GLIBCXX_BEGIN_NAMESPACE(std)
  30
  31   condition_variable::condition_variable() throw ()
  32   {
  33 #ifdef __GTHREAD_COND_INIT
  34     __native_type __tmp = __GTHREAD_COND_INIT;
  35     _M_cond = __tmp;
  36 #else
  37     int __e = __gthread_cond_init(&_M_cond, 0);
  38
  39     if (__e)
  40       __throw_system_error(__e);
  41 #endif
  42   }
  43
  44   condition_variable::~condition_variable() throw ()
  45   {
  46     // XXX no thread blocked
  47     /* int __e = */ __gthread_cond_destroy(&_M_cond);
  48     // if __e == EBUSY then blocked
  49   }
  50
  51   void
  52   condition_variable::wait(unique_lock<mutex>& __lock)
  53   {
  54     int __e = __gthread_cond_wait(&_M_cond, __lock.mutex()->native_handle());
  55
  56     if (__e)
  57       __throw_system_error(__e);
  58   }
  59
  60   void
  61   condition_variable::notify_one()
  62   {
  63     int __e = __gthread_cond_signal(&_M_cond);
  64
  65     // XXX not in spec
  66     // EINVAL
  67     if (__e)
  68       __throw_system_error(__e);
  69   }
  70
  71   void
  72   condition_variable::notify_all()
  73   {
  74     int __e = __gthread_cond_broadcast(&_M_cond);
  75
  76     // XXX not in spec
  77     // EINVAL
  78     if (__e)
  79       __throw_system_error(__e);
  80   }
  81
  82   condition_variable_any::condition_variable_any() throw ()
  83   { }
  84
  85   condition_variable_any::~condition_variable_any() throw ()
  86   { }
  87
  88 _GLIBCXX_END_NAMESPACE
  89
  90 #endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1