/*! \details This function initializes \a mutex with \a attr.
* \return Zero on success or -1 with \a errno (see \ref errno) set to:
* - EINVAL: mutex is NULL
*/
int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr){
if ( mutex == NULL ){
errno = EINVAL;
return -1;
}
mutex->flags = PTHREAD_MUTEX_FLAGS_INITIALIZED;
if ( attr == NULL ){
mutex->prio_ceiling = PTHREAD_MUTEX_PRIO_CEILING;
if ( task_get_current() == 0 ){
mutex->pid = 0;
} else {
mutex->pid = task_get_pid( task_get_current() );
}
mutex->lock = 0;
mutex->pthread = -1;
return 0;
}
if ( attr->process_shared != 0 ){
//Enter priv mode to modify a shared object
mutex->flags |= (PTHREAD_MUTEX_FLAGS_PSHARED);
}
if ( attr->recursive ){
mutex->flags |= (PTHREAD_MUTEX_FLAGS_RECURSIVE);
}
mutex->prio_ceiling = attr->prio_ceiling;
mutex->pid = task_get_pid( task_get_current() );
mutex->lock = 0;
mutex->pthread = -1;
return 0;
}
pid_t _getpid(void){
#if SINGLE_TASK == 0
return (pid_t)task_get_pid( task_get_current() );
#else
return 0;
#endif
}
/*! \cond */
pid_t _getpid(){
return (pid_t)task_get_pid( task_get_current() );
}
