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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/common/mutex.h>
#include <aws/common/posix/common.inl>
#include <errno.h>
void aws_mutex_clean_up(struct aws_mutex *mutex) {
AWS_PRECONDITION(mutex);
if (mutex->initialized) {
pthread_mutex_destroy(&mutex->mutex_handle);
}
AWS_ZERO_STRUCT(*mutex);
}
int aws_mutex_init(struct aws_mutex *mutex) {
AWS_PRECONDITION(mutex);
pthread_mutexattr_t attr;
int err_code = pthread_mutexattr_init(&attr);
int return_code = AWS_OP_SUCCESS;
if (!err_code) {
if ((err_code = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL)) ||
(err_code = pthread_mutex_init(&mutex->mutex_handle, &attr))) {
return_code = aws_private_convert_and_raise_error_code(err_code);
}
pthread_mutexattr_destroy(&attr);
} else {
return_code = aws_private_convert_and_raise_error_code(err_code);
}
mutex->initialized = (return_code == AWS_OP_SUCCESS);
return return_code;
}
int aws_mutex_lock(struct aws_mutex *mutex) {
AWS_PRECONDITION(mutex && mutex->initialized);
return aws_private_convert_and_raise_error_code(pthread_mutex_lock(&mutex->mutex_handle));
}
int aws_mutex_try_lock(struct aws_mutex *mutex) {
AWS_PRECONDITION(mutex && mutex->initialized);
return aws_private_convert_and_raise_error_code(pthread_mutex_trylock(&mutex->mutex_handle));
}
int aws_mutex_unlock(struct aws_mutex *mutex) {
AWS_PRECONDITION(mutex && mutex->initialized);
return aws_private_convert_and_raise_error_code(pthread_mutex_unlock(&mutex->mutex_handle));
}
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