1 // { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } }
2 // { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } }
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 "" }
8 // Copyright (C) 2011 Free Software Foundation, Inc.
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)
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.
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/>.
25 #include <condition_variable>
33 ~scoped_thread() { if (t.joinable()) t.join(); }
39 typedef std::unique_lock<std::mutex> Lock;
42 std::condition_variable_any cond;
43 unsigned int product=0;
44 const unsigned int count=10;
46 // writing to stream causes timing changes which makes deadlock easier
47 // to reproduce - do not remove
48 std::ostringstream out;
51 std::array<scoped_thread, 2> threads;
52 for(size_t i=0; i<threads.size(); ++i)
53 threads[i].t = std::thread( [&] {
54 for(unsigned int i=0; i<count; ++i)
56 std::this_thread::yield();
60 out << "got product " << std::this_thread::get_id() << ' ' << product << std::endl;
66 for(size_t i=0; i<threads.size()*count; ++i)
68 std::this_thread::yield();
71 out << "setting product " << std::this_thread::get_id() << ' ' << product << std::endl;