libstdc++-v3/testsuite/30_threads/mutex/try_lock/2.cc

   1 // { dg-do run { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-rtems* *-*-darwin* powerpc-ibm-aix* } }
   2 // { dg-options " -std=gnu++11 -pthread" { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* powerpc-ibm-aix* } }
   3 // { dg-options " -std=gnu++11 -pthreads" { target *-*-solaris* } }
   4 // { dg-options " -std=gnu++11 " { target *-*-cygwin *-*-rtems* *-*-darwin* } }
   5 // { dg-require-cstdint "" }
   6 // { dg-require-gthreads "" }
   7
   8 // Copyright (C) 2008-2016 Free Software Foundation, Inc.
   9 //
  10 // This file is part of the GNU ISO C++ Library.  This library is free
  11 // software; you can redistribute it and/or modify it under the
  12 // terms of the GNU General Public License as published by the
  13 // Free Software Foundation; either version 3, or (at your option)
  14 // any later version.
  15
  16 // This library is distributed in the hope that it will be useful,
  17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 // GNU General Public License for more details.
  20
  21 // You should have received a copy of the GNU General Public License along
  22 // with this library; see the file COPYING3.  If not see
  23 // <http://www.gnu.org/licenses/>.
  24
  25
  26 #include <mutex>
  27 #include <thread>
  28 #include <system_error>
  29 #include <testsuite_hooks.h>
  30
  31 int main()
  32 {
  33   bool test __attribute__((unused)) = true;
  34   typedef std::mutex mutex_type;
  35
  36   try
  37     {
  38       mutex_type m;
  39       m.lock();
  40       bool b;
  41
  42       std::thread t([&] {
  43         try
  44           {
  45             b = m.try_lock();
  46           }
  47         catch (const std::system_error& e)
  48           {
  49             VERIFY( false );
  50           }
  51       });
  52       t.join();
  53       VERIFY( !b );
  54
  55       m.unlock();
  56     }
  57   catch (const std::system_error& e)
  58     {
  59       VERIFY( false );
  60     }
  61   catch (...)
  62     {
  63       VERIFY( false );
  64     }
  65
  66   return 0;
  67 }