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 "" }
7// { dg-require-atomic-builtins "" }
8
9// Copyright (C) 2009, 2010 Free Software Foundation, Inc.
10//
11// This file is part of the GNU ISO C++ Library.  This library is free
12// software; you can redistribute it and/or modify it under the
13// terms of the GNU General Public License as published by the
14// Free Software Foundation; either version 3, or (at your option)
15// any later version.
16
17// This library is distributed in the hope that it will be useful,
18// but WITHOUT ANY WARRANTY; without even the implied warranty of
19// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20// GNU General Public License for more details.
21
22// You should have received a copy of the GNU General Public License along
23// with this library; see the file COPYING3.  If not see
24// <http://www.gnu.org/licenses/>.
25
26#include <future>
27#include <testsuite_hooks.h>
28
29
30// Test promise::set_value() for deadlock by checking if the state is ready
31// during construction and destruction of the associated state.
32
33struct tester
34{
35  tester(int);
36  tester(const tester&);
37  tester() = delete;
38  tester& operator=(const tester&);
39};
40
41std::promise<tester> pglobal;
42std::future<tester> fglobal = pglobal.get_future();
43
44tester::tester(int)
45{
46  bool test __attribute__((unused)) = true;
47  VERIFY (!fglobal.wait_for(std::chrono::milliseconds(1)));
48}
49
50tester::tester(const tester&)
51{
52  bool test __attribute__((unused)) = true;
53  // if this copy happens while a mutex is locked next line could deadlock:
54  VERIFY (!fglobal.wait_for(std::chrono::milliseconds(1)));
55}
56
57tester& tester::operator=(const tester&)
58{
59  bool test __attribute__((unused)) = true;
60  // if this copy happens while a mutex is locked next line could deadlock:
61  VERIFY (!fglobal.wait_for(std::chrono::milliseconds(1)));
62  return *this;
63}
64
65void test01()
66{
67  bool test __attribute__((unused)) = true;
68
69  pglobal.set_value( tester(1) );
70
71  VERIFY( fglobal.wait_for(std::chrono::milliseconds(1)) );
72}
73
74int main()
75{
76  test01();
77  return 0;
78}
79