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85ec4feb | 1 | // Copyright (C) 2015-2018 Free Software Foundation, Inc. |
d1a74a28 JW |
2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
d1236680 RO |
18 | // { dg-do run } |
19 | // { dg-options "-pthread" } | |
71c54f8e | 20 | // { dg-require-effective-target c++11 } |
d1236680 | 21 | // { dg-require-effective-target pthread } |
d1a74a28 | 22 | // { dg-require-cstdint "" } |
f55e699d | 23 | // { dg-require-gthreads "" } |
d1a74a28 JW |
24 | // { dg-require-time "" } |
25 | ||
26 | #include <thread> | |
27 | #include <chrono> | |
f55e699d JW |
28 | #include <atomic> |
29 | #include <cstdint> | |
30 | #include <signal.h> | |
d1a74a28 JW |
31 | #include <testsuite_hooks.h> |
32 | ||
33 | void | |
34 | test01() | |
35 | { | |
36 | std::this_thread::sleep_for(std::chrono::seconds(0)); | |
37 | std::this_thread::sleep_for(std::chrono::seconds(-1)); | |
f55e699d JW |
38 | std::this_thread::sleep_for(std::chrono::duration<std::uint64_t>::zero()); |
39 | } | |
40 | ||
41 | void | |
42 | test02() | |
43 | { | |
f55e699d JW |
44 | // test interruption of this_thread::sleep_for() by a signal |
45 | struct sigaction sa{ }; | |
46 | sa.sa_handler = +[](int) { }; | |
47 | sigaction(SIGUSR1, &sa, 0); | |
48 | bool result = false; | |
49 | std::atomic<bool> sleeping{false}; | |
50 | std::thread t([&result, &sleeping] { | |
51 | auto start = std::chrono::system_clock::now(); | |
52 | auto time = std::chrono::seconds(3); | |
53 | sleeping = true; | |
54 | std::this_thread::sleep_for(time); | |
55 | result = std::chrono::system_clock::now() >= (start + time); | |
56 | }); | |
57 | while (!sleeping) { } | |
58 | std::this_thread::sleep_for(std::chrono::milliseconds(500)); | |
59 | pthread_kill(t.native_handle(), SIGUSR1); | |
60 | t.join(); | |
61 | VERIFY( result ); | |
62 | } | |
63 | ||
64 | struct slow_clock | |
65 | { | |
66 | using rep = std::chrono::system_clock::rep; | |
67 | using period = std::chrono::system_clock::period; | |
68 | using duration = std::chrono::system_clock::duration; | |
69 | using time_point = std::chrono::time_point<slow_clock, duration>; | |
70 | static constexpr bool is_steady = false; | |
71 | ||
72 | static time_point now() | |
73 | { | |
74 | auto real = std::chrono::system_clock::now(); | |
75 | return time_point{real.time_since_epoch() / 2}; | |
76 | } | |
77 | }; | |
78 | ||
79 | void | |
80 | test03() | |
81 | { | |
f55e699d JW |
82 | // test that this_thread::sleep_until() handles clock adjustments |
83 | auto when = slow_clock::now() + std::chrono::seconds(2); | |
84 | std::this_thread::sleep_until(when); | |
85 | VERIFY( slow_clock::now() >= when ); | |
d1a74a28 JW |
86 | } |
87 | ||
88 | int | |
89 | main() | |
90 | { | |
91 | test01(); | |
f55e699d JW |
92 | test02(); |
93 | test03(); | |
d1a74a28 | 94 | } |