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Merge "Allow NULL in pthread_mutex_lock/unlock."

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This commit is contained in:
Christopher Ferris 2015-06-10 17:53:45 +00:00 committed by Gerrit Code Review
commit 6a494915d7
3 changed files with 54 additions and 0 deletions
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12
libc/bionic/pthread_mutex.cpp
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@ -501,6 +501,12 @@ static int __pthread_mutex_lock_with_timeout(pthread_mutex_internal_t* mutex,
}
int pthread_mutex_lock(pthread_mutex_t* mutex_interface) {
#if !defined(__LP64__)
if (mutex_interface == NULL) {
return EINVAL;
}
#endif
pthread_mutex_internal_t* mutex = __get_internal_mutex(mutex_interface);
uint16_t old_state = atomic_load_explicit(&mutex->state, memory_order_relaxed);
@ -516,6 +522,12 @@ int pthread_mutex_lock(pthread_mutex_t* mutex_interface) {
}
int pthread_mutex_unlock(pthread_mutex_t* mutex_interface) {
#if !defined(__LP64__)
if (mutex_interface == NULL) {
return EINVAL;
}
#endif
pthread_mutex_internal_t* mutex = __get_internal_mutex(mutex_interface);
uint16_t old_state = atomic_load_explicit(&mutex->state, memory_order_relaxed);

8
libc/include/pthread.h
View file

@ -176,10 +176,18 @@ int pthread_mutexattr_settype(pthread_mutexattr_t*, int) __nonnull((1));
int pthread_mutex_destroy(pthread_mutex_t*) __nonnull((1));
int pthread_mutex_init(pthread_mutex_t*, const pthread_mutexattr_t*) __nonnull((1));
#if !defined(__LP64__)
int pthread_mutex_lock(pthread_mutex_t*) /* __nonnull((1)) */;
#else
int pthread_mutex_lock(pthread_mutex_t*) __nonnull((1));
#endif
int pthread_mutex_timedlock(pthread_mutex_t*, const struct timespec*) __nonnull((1, 2));
int pthread_mutex_trylock(pthread_mutex_t*) __nonnull((1));
#if !defined(__LP4__)
int pthread_mutex_unlock(pthread_mutex_t*) /* __nonnull((1)) */;
#else
int pthread_mutex_unlock(pthread_mutex_t*) __nonnull((1));
#endif
int pthread_once(pthread_once_t*, void (*)(void)) __nonnull((1, 2));

34
tests/pthread_test.cpp
View file

@ -1537,3 +1537,37 @@ TEST(pthread, pthread_types_allow_four_bytes_alignment) {
GTEST_LOG_(INFO) << "This test tests bionic implementation details.";
#endif
}
TEST(pthread, pthread_mutex_lock_null_32) {
#if defined(__BIONIC__) && !defined(__LP64__)
ASSERT_EQ(EINVAL, pthread_mutex_lock(NULL));
#else
GTEST_LOG_(INFO) << "This test tests bionic implementation details on 32 bit devices.";
#endif
}
TEST(pthread, pthread_mutex_unlock_null_32) {
#if defined(__BIONIC__) && !defined(__LP64__)
ASSERT_EQ(EINVAL, pthread_mutex_unlock(NULL));
#else
GTEST_LOG_(INFO) << "This test tests bionic implementation details on 32 bit devices.";
#endif
}
TEST_F(pthread_DeathTest, pthread_mutex_lock_null_64) {
#if defined(__BIONIC__) && defined(__LP64__)
pthread_mutex_t* null_value = nullptr;
ASSERT_EXIT(pthread_mutex_lock(null_value), testing::KilledBySignal(SIGSEGV), "");
#else
GTEST_LOG_(INFO) << "This test tests bionic implementation details on 64 bit devices.";
#endif
}
TEST_F(pthread_DeathTest, pthread_mutex_unlock_null_64) {
#if defined(__BIONIC__) && defined(__LP64__)
pthread_mutex_t* null_value = nullptr;
ASSERT_EXIT(pthread_mutex_unlock(null_value), testing::KilledBySignal(SIGSEGV), "");
#else
GTEST_LOG_(INFO) << "This test tests bionic implementation details on 64 bit devices.";
#endif
}