libstdc++-v3/testsuite/30_threads/lock_guard/cons/1.cc

   1 // { dg-do run }
   2 // { dg-options " -std=gnu++11 " }
   3 // { dg-require-cstdint "" }
   4
   5 // Copyright (C) 2010-2015 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22
  23 #include <mutex>
  24 #include <testsuite_hooks.h>
  25
  26 struct Mutex
  27 {
  28   Mutex() : locked(false) { }
  29
  30   ~Mutex()
  31   {
  32     if (locked)
  33       throw 0;
  34   }
  35
  36   void lock()
  37   {
  38     if (locked)
  39       throw 0;
  40     locked = true;
  41   }
  42
  43   void unlock()
  44   {
  45     if (!locked)
  46       throw 0;
  47     locked = false;
  48   }
  49
  50   bool locked;
  51 };
  52
  53 void test01()
  54 {
  55   bool test __attribute__((unused)) = true;
  56
  57   Mutex m;
  58   m.lock();
  59
  60   try
  61     {
  62       std::lock_guard<Mutex> l(m, std::adopt_lock);
  63     }
  64   catch (...)
  65     {
  66       VERIFY( false );
  67     }
  68
  69   VERIFY( !m.locked );
  70 }
  71
  72 int main()
  73 {
  74   test01();
  75   return 0;
  76 }