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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
//===----------------------------------------------------------------------===//
//
// 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: libcpp-has-no-threads
// <thread>
// class thread
// void join();
#include <thread>
#include <new>
#include <cstdlib>
#include <cassert>
#include <system_error>
#include <atomic>
#include "make_test_thread.h"
#include "test_macros.h"
std::atomic_bool done(false);
class G
{
int alive_;
public:
static int n_alive;
static bool op_run;
G() : alive_(1) {++n_alive;}
G(const G& g) : alive_(g.alive_) {++n_alive;}
~G() {alive_ = 0; --n_alive;}
void operator()()
{
assert(alive_ == 1);
assert(n_alive >= 1);
op_run = true;
}
};
int G::n_alive = 0;
bool G::op_run = false;
void foo() { done = true; }
int main(int, char**)
{
{
G g;
std::thread t0 = support::make_test_thread(g);
assert(t0.joinable());
t0.join();
assert(!t0.joinable());
#ifndef TEST_HAS_NO_EXCEPTIONS
try {
t0.join();
assert(false);
} catch (std::system_error const&) {
}
#endif
}
#ifndef TEST_HAS_NO_EXCEPTIONS
{
std::thread t0 = support::make_test_thread(foo);
t0.detach();
try {
t0.join();
assert(false);
} catch (std::system_error const&) {
}
// Wait to make sure that the detached thread has started up.
// Without this, we could exit main and start destructing global
// resources that are needed when the thread starts up, while the
// detached thread would start up only later.
while (!done) {}
}
#endif
return 0;
}
|
