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99dee823 | 1 | // Copyright (C) 2015-2021 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 | 24 | // { dg-require-time "" } |
5bbb1f30 | 25 | // { dg-require-sleep "" } |
d1a74a28 JW |
26 | |
27 | #include <thread> | |
28 | #include <chrono> | |
f55e699d JW |
29 | #include <atomic> |
30 | #include <cstdint> | |
31 | #include <signal.h> | |
d1a74a28 JW |
32 | #include <testsuite_hooks.h> |
33 | ||
34 | void | |
35 | test01() | |
36 | { | |
37 | std::this_thread::sleep_for(std::chrono::seconds(0)); | |
38 | std::this_thread::sleep_for(std::chrono::seconds(-1)); | |
f55e699d JW |
39 | std::this_thread::sleep_for(std::chrono::duration<std::uint64_t>::zero()); |
40 | } | |
41 | ||
42 | void | |
43 | test02() | |
44 | { | |
f55e699d JW |
45 | // test interruption of this_thread::sleep_for() by a signal |
46 | struct sigaction sa{ }; | |
47 | sa.sa_handler = +[](int) { }; | |
48 | sigaction(SIGUSR1, &sa, 0); | |
49 | bool result = false; | |
50 | std::atomic<bool> sleeping{false}; | |
51 | std::thread t([&result, &sleeping] { | |
52 | auto start = std::chrono::system_clock::now(); | |
53 | auto time = std::chrono::seconds(3); | |
54 | sleeping = true; | |
55 | std::this_thread::sleep_for(time); | |
56 | result = std::chrono::system_clock::now() >= (start + time); | |
cfef4c32 | 57 | sleeping = false; |
f55e699d | 58 | }); |
cfef4c32 JW |
59 | while (!sleeping) |
60 | { | |
61 | // Wait for the thread to start sleeping. | |
62 | } | |
63 | while (sleeping) | |
64 | { | |
65 | // The sleeping thread should finish eventually, | |
66 | // even if continually interrupted after less than a second: | |
67 | std::this_thread::sleep_for(std::chrono::milliseconds(500)); | |
68 | pthread_kill(t.native_handle(), SIGUSR1); | |
69 | } | |
f55e699d JW |
70 | t.join(); |
71 | VERIFY( result ); | |
72 | } | |
73 | ||
74 | struct slow_clock | |
75 | { | |
76 | using rep = std::chrono::system_clock::rep; | |
77 | using period = std::chrono::system_clock::period; | |
78 | using duration = std::chrono::system_clock::duration; | |
79 | using time_point = std::chrono::time_point<slow_clock, duration>; | |
80 | static constexpr bool is_steady = false; | |
81 | ||
82 | static time_point now() | |
83 | { | |
84 | auto real = std::chrono::system_clock::now(); | |
85 | return time_point{real.time_since_epoch() / 2}; | |
86 | } | |
87 | }; | |
88 | ||
89 | void | |
90 | test03() | |
91 | { | |
f55e699d JW |
92 | // test that this_thread::sleep_until() handles clock adjustments |
93 | auto when = slow_clock::now() + std::chrono::seconds(2); | |
94 | std::this_thread::sleep_until(when); | |
95 | VERIFY( slow_clock::now() >= when ); | |
d1a74a28 JW |
96 | } |
97 | ||
98 | int | |
99 | main() | |
100 | { | |
101 | test01(); | |
f55e699d JW |
102 | test02(); |
103 | test03(); | |
d1a74a28 | 104 | } |