blob: da945b4df10bdffa652e9474f92930c602827d2f [file] [log] [blame]
* Copyright (C) 2012 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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#include <gtest/gtest.h>
#include <errno.h>
#include <pthread.h>
#include <unistd.h>
TEST(pthread, pthread_key_create) {
pthread_key_t key;
ASSERT_EQ(0, pthread_key_create(&key, NULL));
ASSERT_EQ(0, pthread_key_delete(key));
// Can't delete a key that's already been deleted.
ASSERT_EQ(EINVAL, pthread_key_delete(key));
static void* IdFn(void* arg) {
return arg;
static void* SleepFn(void* arg) {
sleep(reinterpret_cast<unsigned int>(arg));
return NULL;
static void* SpinFn(void* arg) {
volatile bool* b = reinterpret_cast<volatile bool*>(arg);
while (!*b) {
return NULL;
static void* JoinFn(void* arg) {
return reinterpret_cast<void*>(pthread_join(reinterpret_cast<pthread_t>(arg), NULL));
static void AssertDetached(pthread_t t, bool is_detached) {
pthread_attr_t attr;
ASSERT_EQ(0, pthread_getattr_np(t, &attr));
int detach_state;
ASSERT_EQ(0, pthread_attr_getdetachstate(&attr, &detach_state));
ASSERT_EQ(is_detached, (detach_state == PTHREAD_CREATE_DETACHED));
TEST(pthread, pthread_create) {
void* expected_result = reinterpret_cast<void*>(123);
// Can we create a thread?
pthread_t t;
ASSERT_EQ(0, pthread_create(&t, NULL, IdFn, expected_result));
// If we join, do we get the expected value back?
void* result;
ASSERT_EQ(0, pthread_join(t, &result));
ASSERT_EQ(expected_result, result);
TEST(pthread, pthread_no_join_after_detach) {
pthread_t t1;
ASSERT_EQ(0, pthread_create(&t1, NULL, SleepFn, reinterpret_cast<void*>(5)));
// After a pthread_detach...
ASSERT_EQ(0, pthread_detach(t1));
AssertDetached(t1, true);
// ...pthread_join should fail.
void* result;
ASSERT_EQ(EINVAL, pthread_join(t1, &result));
TEST(pthread, pthread_no_op_detach_after_join) {
bool done = false;
pthread_t t1;
ASSERT_EQ(0, pthread_create(&t1, NULL, SpinFn, &done));
// If thread 2 is already waiting to join thread 1...
pthread_t t2;
ASSERT_EQ(0, pthread_create(&t2, NULL, JoinFn, reinterpret_cast<void*>(t1)));
sleep(1); // (Give t2 a chance to call pthread_join.)
// ...a call to pthread_detach on thread 1 will "succeed" (silently fail)...
ASSERT_EQ(0, pthread_detach(t1));
AssertDetached(t1, false);
done = true;
// ...but t2's join on t1 still goes ahead (which we can tell because our join on t2 finishes).
void* join_result;
ASSERT_EQ(0, pthread_join(t2, &join_result));
ASSERT_EQ(0, reinterpret_cast<int>(join_result));
TEST(pthread, pthread_join_self) {
void* result;
ASSERT_EQ(EDEADLK, pthread_join(pthread_self(), &result));
#if __BIONIC__ // For some reason, gtest on bionic can cope with this but gtest on glibc can't.
static void TestBug37410() {
pthread_t t1;
ASSERT_EQ(0, pthread_create(&t1, NULL, JoinFn, reinterpret_cast<void*>(pthread_self())));
// We have to say "DeathTest" here so gtest knows to run this test (which exits)
// in its own process.
TEST(pthread_DeathTest, pthread_bug_37410) {
::testing::FLAGS_gtest_death_test_style = "threadsafe";
EXPECT_EXIT(TestBug37410(), ::testing::ExitedWithCode(0), "");