1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// UNSUPPORTED: no-threads
// ALLOW_RETRIES: 2
// <mutex>
// class timed_mutex;
// template <class Clock, class Duration>
// unique_lock(mutex_type& m, const chrono::time_point<Clock, Duration>& abs_time);
#include <mutex>
#include <thread>
#include <cstdlib>
#include <cassert>
#include "make_test_thread.h"
#include "test_macros.h"
std::timed_mutex m;
typedef std::chrono::steady_clock Clock;
typedef Clock::time_point time_point;
typedef Clock::duration duration;
typedef std::chrono::milliseconds ms;
typedef std::chrono::nanoseconds ns;
void f1()
{
time_point t0 = Clock::now();
std::unique_lock<std::timed_mutex> lk(m, Clock::now() + ms(300));
assert(lk.owns_lock() == true);
time_point t1 = Clock::now();
ns d = t1 - t0 - ms(250);
assert(d < ns(50000000)); // within 50ms
}
void f2()
{
time_point t0 = Clock::now();
std::unique_lock<std::timed_mutex> lk(m, Clock::now() + ms(250));
assert(lk.owns_lock() == false);
time_point t1 = Clock::now();
ns d = t1 - t0 - ms(250);
assert(d < ms(50)); // within 50ms
}
int main(int, char**)
{
{
m.lock();
std::thread t = support::make_test_thread(f1);
std::this_thread::sleep_for(ms(250));
m.unlock();
t.join();
}
{
m.lock();
std::thread t = support::make_test_thread(f2);
std::this_thread::sleep_for(ms(300));
m.unlock();
t.join();
}
return 0;
}
|
