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

   1 // { dg-do run { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-darwin* powerpc-ibm-aix* } }
   2 // { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-dragonfly* *-*-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) 2008-2014 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 typedef std::unique_lock<std::mutex> lock_type;
  31
  32 void test01()
  33 {
  34   bool test __attribute__((unused)) = true;
  35
  36   try
  37     {
  38       std::mutex m1, m2, m3;
  39       lock_type l1(m1);
  40       int result = std::try_lock(m1, m2, m3);
  41       VERIFY( result == 0 );
  42       VERIFY( l1.owns_lock() );
  43       lock_type l2(m2);
  44       lock_type l3(m3);
  45     }
  46   catch (const std::system_error& e)
  47     {
  48       VERIFY( false );
  49     }
  50   catch (...)
  51     {
  52       VERIFY( false );
  53     }
  54 }
  55
  56 void test02()
  57 {
  58   bool test __attribute__((unused)) = true;
  59
  60   try
  61     {
  62       std::mutex m1, m2, m3;
  63       lock_type l2(m2);
  64       int result = std::try_lock(m1, m2, m3);
  65       VERIFY( result == 1 );
  66       VERIFY( l2.owns_lock() );
  67       lock_type l1(m1);
  68       lock_type l3(m3);
  69     }
  70   catch (const std::system_error& e)
  71     {
  72       VERIFY( false );
  73     }
  74   catch (...)
  75     {
  76       VERIFY( false );
  77     }
  78 }
  79
  80 void test03()
  81 {
  82   bool test __attribute__((unused)) = true;
  83
  84   try
  85     {
  86       std::mutex m1, m2, m3;
  87       lock_type l3(m3);
  88       int result = std::try_lock(m1, m2, m3);
  89       VERIFY( result == 2 );
  90       VERIFY( l3.owns_lock() );
  91       lock_type l1(m1);
  92       lock_type l2(m2);
  93     }
  94   catch (const std::system_error& e)
  95     {
  96       VERIFY( false );
  97     }
  98   catch (...)
  99     {
 100       VERIFY( false );
 101     }
 102 }
 103
 104 int main()
 105 {
 106   test01();
 107   test02();
 108   test03();
 109   return 0;
 110 }