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Elliott Hughesbfeab1b2012-09-05 17:47:37 -07001/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <gtest/gtest.h>
18
19#include <errno.h>
20#include <pthread.h>
Elliott Hughes4d014e12012-09-07 16:47:54 -070021#include <unistd.h>
Elliott Hughesbfeab1b2012-09-05 17:47:37 -070022
23TEST(pthread, pthread_key_create) {
24 pthread_key_t key;
25 ASSERT_EQ(0, pthread_key_create(&key, NULL));
26 ASSERT_EQ(0, pthread_key_delete(key));
27 // Can't delete a key that's already been deleted.
28 ASSERT_EQ(EINVAL, pthread_key_delete(key));
29}
Elliott Hughes4d014e12012-09-07 16:47:54 -070030
31static void* IdFn(void* arg) {
32 return arg;
33}
34
35static void* SleepFn(void* arg) {
36 sleep(reinterpret_cast<unsigned int>(arg));
37 return NULL;
38}
39
Sergey Melnikov10ce9692012-10-26 14:06:43 +040040static void* SpinFn(void* arg) {
41 volatile bool* b = reinterpret_cast<volatile bool*>(arg);
42 while (!*b) {
43 }
44 return NULL;
45}
46
Elliott Hughes4d014e12012-09-07 16:47:54 -070047static void* JoinFn(void* arg) {
48 return reinterpret_cast<void*>(pthread_join(reinterpret_cast<pthread_t>(arg), NULL));
49}
50
Sergey Melnikov10ce9692012-10-26 14:06:43 +040051static void AssertDetached(pthread_t t, bool is_detached) {
52 pthread_attr_t attr;
53 ASSERT_EQ(0, pthread_getattr_np(t, &attr));
54 int detach_state;
55 ASSERT_EQ(0, pthread_attr_getdetachstate(&attr, &detach_state));
56 pthread_attr_destroy(&attr);
57 ASSERT_EQ(is_detached, (detach_state == PTHREAD_CREATE_DETACHED));
58}
59
Elliott Hughes4d014e12012-09-07 16:47:54 -070060TEST(pthread, pthread_create) {
61 void* expected_result = reinterpret_cast<void*>(123);
62 // Can we create a thread?
63 pthread_t t;
64 ASSERT_EQ(0, pthread_create(&t, NULL, IdFn, expected_result));
65 // If we join, do we get the expected value back?
66 void* result;
67 ASSERT_EQ(0, pthread_join(t, &result));
68 ASSERT_EQ(expected_result, result);
69}
70
71TEST(pthread, pthread_no_join_after_detach) {
72 pthread_t t1;
73 ASSERT_EQ(0, pthread_create(&t1, NULL, SleepFn, reinterpret_cast<void*>(5)));
74
75 // After a pthread_detach...
76 ASSERT_EQ(0, pthread_detach(t1));
Sergey Melnikov10ce9692012-10-26 14:06:43 +040077 AssertDetached(t1, true);
Elliott Hughes4d014e12012-09-07 16:47:54 -070078
79 // ...pthread_join should fail.
80 void* result;
81 ASSERT_EQ(EINVAL, pthread_join(t1, &result));
82}
83
84TEST(pthread, pthread_no_op_detach_after_join) {
Sergey Melnikov10ce9692012-10-26 14:06:43 +040085 bool done = false;
86
Elliott Hughes4d014e12012-09-07 16:47:54 -070087 pthread_t t1;
Sergey Melnikov10ce9692012-10-26 14:06:43 +040088 ASSERT_EQ(0, pthread_create(&t1, NULL, SpinFn, &done));
Elliott Hughes4d014e12012-09-07 16:47:54 -070089
90 // If thread 2 is already waiting to join thread 1...
91 pthread_t t2;
92 ASSERT_EQ(0, pthread_create(&t2, NULL, JoinFn, reinterpret_cast<void*>(t1)));
93
Sergey Melnikov10ce9692012-10-26 14:06:43 +040094 sleep(1); // (Give t2 a chance to call pthread_join.)
Elliott Hughes4d014e12012-09-07 16:47:54 -070095
Sergey Melnikov10ce9692012-10-26 14:06:43 +040096 // ...a call to pthread_detach on thread 1 will "succeed" (silently fail)...
97 ASSERT_EQ(0, pthread_detach(t1));
98 AssertDetached(t1, false);
99
100 done = true;
101
102 // ...but t2's join on t1 still goes ahead (which we can tell because our join on t2 finishes).
Elliott Hughes4d014e12012-09-07 16:47:54 -0700103 void* join_result;
104 ASSERT_EQ(0, pthread_join(t2, &join_result));
Sergey Melnikov10ce9692012-10-26 14:06:43 +0400105 ASSERT_EQ(0, reinterpret_cast<int>(join_result));
Elliott Hughes4d014e12012-09-07 16:47:54 -0700106}
Elliott Hughes14f19592012-10-29 10:19:44 -0700107
108TEST(pthread, pthread_join_self) {
109 void* result;
110 ASSERT_EQ(EDEADLK, pthread_join(pthread_self(), &result));
111}
Elliott Hughes4f251be2012-11-01 16:33:29 -0700112
113#if __BIONIC__ // For some reason, gtest on bionic can cope with this but gtest on glibc can't.
114
115static void TestBug37410() {
116 pthread_t t1;
117 ASSERT_EQ(0, pthread_create(&t1, NULL, JoinFn, reinterpret_cast<void*>(pthread_self())));
118 pthread_exit(NULL);
119}
120
121// We have to say "DeathTest" here so gtest knows to run this test (which exits)
122// in its own process.
123TEST(pthread_DeathTest, pthread_bug_37410) {
124 // http://code.google.com/p/android/issues/detail?id=37410
125 ::testing::FLAGS_gtest_death_test_style = "threadsafe";
126 EXPECT_EXIT(TestBug37410(), ::testing::ExitedWithCode(0), "");
127}
128#endif
Elliott Hughesc5d028f2013-01-10 14:42:14 -0800129
130static void* SignalHandlerFn(void* arg) {
131 sigset_t wait_set;
132 sigfillset(&wait_set);
133 return reinterpret_cast<void*>(sigwait(&wait_set, reinterpret_cast<int*>(arg)));
134}
135
136TEST(pthread, pthread_sigmask) {
137 // Block SIGUSR1.
138 sigset_t set;
139 sigemptyset(&set);
140 sigaddset(&set, SIGUSR1);
141 ASSERT_EQ(0, pthread_sigmask(SIG_BLOCK, &set, NULL));
142
143 // Spawn a thread that calls sigwait and tells us what it received.
144 pthread_t signal_thread;
145 int received_signal = -1;
146 ASSERT_EQ(0, pthread_create(&signal_thread, NULL, SignalHandlerFn, &received_signal));
147
148 // Send that thread SIGUSR1.
149 pthread_kill(signal_thread, SIGUSR1);
150
151 // See what it got.
152 void* join_result;
153 ASSERT_EQ(0, pthread_join(signal_thread, &join_result));
154 ASSERT_EQ(SIGUSR1, received_signal);
155 ASSERT_EQ(0, reinterpret_cast<int>(join_result));
156}