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
112
113
114
115
116
117
118
119
120
121
122
|
/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <string>
#include <android-base/expected.h>
#include <gtest/gtest.h>
#include <netdutils/ThreadUtil.h>
namespace android::netdutils {
namespace {
android::base::expected<std::string, int> getThreadName() {
char name[16] = {};
if (const int ret = pthread_getname_np(pthread_self(), name, sizeof(name)); ret != 0) {
return android::base::unexpected(ret);
}
return std::string(name);
}
class NoopRun {
public:
explicit NoopRun(const std::string& name = "") : mName(name) { instanceNum++; }
// Destructor happens in the thread.
~NoopRun() {
if (checkName) {
auto expected = getThreadName();
EXPECT_TRUE(expected.has_value());
EXPECT_EQ(mExpectedName, expected.value());
}
instanceNum--;
}
void run() {}
std::string threadName() { return mName; }
// Set the expected thread name which will be used to check if it matches the actual thread
// name which is returned from the system call. The check will happen in the destructor.
void setExpectedName(const std::string& expectedName) {
checkName = true;
mExpectedName = expectedName;
}
static bool waitForAllReleased(int timeoutMs) {
constexpr int intervalMs = 20;
int limit = timeoutMs / intervalMs;
for (int i = 1; i < limit; i++) {
if (instanceNum == 0) {
return true;
}
usleep(intervalMs * 1000);
}
return false;
}
// To track how many instances are alive.
static std::atomic<int> instanceNum;
private:
std::string mName;
std::string mExpectedName;
bool checkName = false;
};
std::atomic<int> NoopRun::instanceNum;
} // namespace
TEST(ThreadUtilTest, objectReleased) {
NoopRun::instanceNum = 0;
NoopRun* obj = new NoopRun();
EXPECT_EQ(1, NoopRun::instanceNum);
threadLaunch(obj);
// Wait for the object released along with the thread exited.
EXPECT_TRUE(NoopRun::waitForAllReleased(1000));
EXPECT_EQ(0, NoopRun::instanceNum);
}
TEST(ThreadUtilTest, SetThreadName) {
NoopRun::instanceNum = 0;
// Test thread name empty.
NoopRun* obj1 = new NoopRun();
obj1->setExpectedName("");
// Test normal case.
NoopRun* obj2 = new NoopRun("TestName");
obj2->setExpectedName("TestName");
// Test thread name too long.
std::string name("TestNameTooooLong");
NoopRun* obj3 = new NoopRun(name);
obj3->setExpectedName(name.substr(0, 15));
// Thread names are examined in their destructors.
EXPECT_EQ(3, NoopRun::instanceNum);
threadLaunch(obj1);
threadLaunch(obj2);
threadLaunch(obj3);
EXPECT_TRUE(NoopRun::waitForAllReleased(1000));
EXPECT_EQ(0, NoopRun::instanceNum);
}
} // namespace android::netdutils
|
