libstdc++-v3/testsuite/30_threads/lock/3.cc

   1 // { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-darwin* powerpc-ibm-aix* } }
   2 // { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-gnu* powerpc-ibm-aix* } }
   3 // { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
   4 // { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
   5 // { dg-require-cstdint "" }
   6 // { dg-require-gthreads "" }
   7
   8 // Copyright (C) 2010-2014 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 <system_error>
  28 #include <testsuite_hooks.h>
  29
  30 struct user_lock
  31 {
  32   user_lock() : is_locked(false) { }
  33   ~user_lock() = default;
  34   user_lock(const user_lock&) = default;
  35
  36   void lock()
  37   {
  38     bool test __attribute__((unused)) = true;
  39     VERIFY( !is_locked );
  40     is_locked = true;
  41   }
  42
  43   bool try_lock()
  44   { return is_locked ? false : (is_locked = true); }
  45
  46   void unlock()
  47   {
  48     bool test __attribute__((unused)) = true;
  49     VERIFY( is_locked );
  50     is_locked = false;
  51   }
  52
  53 private:
  54   bool is_locked;
  55 };
  56
  57 int main()
  58 {
  59   bool test __attribute__((unused)) = true;
  60
  61   try
  62     {
  63       std::mutex m1;
  64       std::recursive_mutex m2;
  65       user_lock m3;
  66
  67       try
  68         {
  69           //heterogeneous types
  70           std::lock(m1, m2, m3);
  71           m1.unlock();
  72           m2.unlock();
  73           m3.unlock();
  74         }
  75       catch (const std::system_error& e)
  76         {
  77           VERIFY( false );
  78         }
  79     }
  80   catch (const std::system_error& e)
  81     {
  82       VERIFY( false );
  83     }
  84   catch (...)
  85     {
  86       VERIFY( false );
  87     }
  88
  89   return 0;
  90 }