pthread_test.cpp revision 14f19592ae7c819855052bcebc79de87069c2954 
1/*
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>
21#include <unistd.h>
22
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}
30
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
40static void* JoinFn(void* arg) {
41  return reinterpret_cast<void*>(pthread_join(reinterpret_cast<pthread_t>(arg), NULL));
42}
43
44TEST(pthread, pthread_create) {
45  void* expected_result = reinterpret_cast<void*>(123);
46  // Can we create a thread?
47  pthread_t t;
48  ASSERT_EQ(0, pthread_create(&t, NULL, IdFn, expected_result));
49  // If we join, do we get the expected value back?
50  void* result;
51  ASSERT_EQ(0, pthread_join(t, &result));
52  ASSERT_EQ(expected_result, result);
53}
54
55TEST(pthread, pthread_no_join_after_detach) {
56  pthread_t t1;
57  ASSERT_EQ(0, pthread_create(&t1, NULL, SleepFn, reinterpret_cast<void*>(5)));
58
59  // After a pthread_detach...
60  ASSERT_EQ(0, pthread_detach(t1));
61
62  // ...pthread_join should fail.
63  void* result;
64  ASSERT_EQ(EINVAL, pthread_join(t1, &result));
65}
66
67TEST(pthread, pthread_no_op_detach_after_join) {
68  pthread_t t1;
69  ASSERT_EQ(0, pthread_create(&t1, NULL, SleepFn, reinterpret_cast<void*>(1)));
70
71  // If thread 2 is already waiting to join thread 1...
72  pthread_t t2;
73  ASSERT_EQ(0, pthread_create(&t2, NULL, JoinFn, reinterpret_cast<void*>(t1)));
74
75  // ...a call to pthread_detach on thread 1 will "succeed"...
76  ASSERT_EQ(0, pthread_detach(t1));
77
78  // ...but the join still goes ahead.
79  void* join_result;
80  ASSERT_EQ(0, pthread_join(t2, &join_result));
81  ASSERT_EQ(EINVAL, reinterpret_cast<int>(join_result));
82}
83
84TEST(pthread, pthread_join_self) {
85  void* result;
86  ASSERT_EQ(EDEADLK, pthread_join(pthread_self(), &result));
87}
88