test_and_set.pass.cpp
3.18 KB
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
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
//===----------------------------------------------------------------------===//
//
// 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
// <atomic>
// struct atomic_flag
// bool test_and_set(memory_order = memory_order_seq_cst);
// bool test_and_set(memory_order = memory_order_seq_cst) volatile;
#include <atomic>
#include <cassert>
#include "test_macros.h"
int main(int, char**)
{
{
std::atomic_flag f;
f.clear();
assert(f.test_and_set() == 0);
assert(f.test_and_set() == 1);
}
{
std::atomic_flag f;
f.clear();
assert(f.test_and_set(std::memory_order_relaxed) == 0);
assert(f.test_and_set(std::memory_order_relaxed) == 1);
}
{
std::atomic_flag f;
f.clear();
assert(f.test_and_set(std::memory_order_consume) == 0);
assert(f.test_and_set(std::memory_order_consume) == 1);
}
{
std::atomic_flag f;
f.clear();
assert(f.test_and_set(std::memory_order_acquire) == 0);
assert(f.test_and_set(std::memory_order_acquire) == 1);
}
{
std::atomic_flag f;
f.clear();
assert(f.test_and_set(std::memory_order_release) == 0);
assert(f.test_and_set(std::memory_order_release) == 1);
}
{
std::atomic_flag f;
f.clear();
assert(f.test_and_set(std::memory_order_acq_rel) == 0);
assert(f.test_and_set(std::memory_order_acq_rel) == 1);
}
{
std::atomic_flag f;
f.clear();
assert(f.test_and_set(std::memory_order_seq_cst) == 0);
assert(f.test_and_set(std::memory_order_seq_cst) == 1);
}
{
volatile std::atomic_flag f;
f.clear();
assert(f.test_and_set() == 0);
assert(f.test_and_set() == 1);
}
{
volatile std::atomic_flag f;
f.clear();
assert(f.test_and_set(std::memory_order_relaxed) == 0);
assert(f.test_and_set(std::memory_order_relaxed) == 1);
}
{
volatile std::atomic_flag f;
f.clear();
assert(f.test_and_set(std::memory_order_consume) == 0);
assert(f.test_and_set(std::memory_order_consume) == 1);
}
{
volatile std::atomic_flag f;
f.clear();
assert(f.test_and_set(std::memory_order_acquire) == 0);
assert(f.test_and_set(std::memory_order_acquire) == 1);
}
{
volatile std::atomic_flag f;
f.clear();
assert(f.test_and_set(std::memory_order_release) == 0);
assert(f.test_and_set(std::memory_order_release) == 1);
}
{
volatile std::atomic_flag f;
f.clear();
assert(f.test_and_set(std::memory_order_acq_rel) == 0);
assert(f.test_and_set(std::memory_order_acq_rel) == 1);
}
{
volatile std::atomic_flag f;
f.clear();
assert(f.test_and_set(std::memory_order_seq_cst) == 0);
assert(f.test_and_set(std::memory_order_seq_cst) == 1);
}
return 0;
}