// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } } // { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } } // { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } } // { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } } // { dg-require-cstdint "" } // { dg-require-gthreads "" } // Copyright (C) 2010 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING3. If not see // . #include #include #include void locker(std::mutex& m1, std::mutex& m2, std::mutex& m3) { bool test __attribute__((unused)) = true; typedef std::unique_lock lock_type; lock_type l1(m1, std::defer_lock); lock_type l2(m2, std::defer_lock); lock_type l3(m3, std::defer_lock); std::lock(l1, l2, l3); VERIFY( l1.owns_lock() ); VERIFY( l2.owns_lock() ); VERIFY( l3.owns_lock() ); } void test01() { std::mutex m1, m2, m3; std::thread t1(locker, std::ref(m1), std::ref(m2), std::ref(m3)); std::thread t2(locker, std::ref(m3), std::ref(m2), std::ref(m1)); t1.join(); t2.join(); } int main() { test01(); return 0; }