#include <unistd.h>
#include <sched.h>
#include <errno.h>

#include <pthread.h>
#include "thread_internal.h"

/* will never return EINVAL ! */

static int __thread_mutex_unlock(pthread_mutex_t*mutex,_pthread_descr this) {
  if (mutex->owner==this) {
    if (mutex->kind==PTHREAD_MUTEX_RECURSIVE_NP) {
      if (--(mutex->count)) return 0;
    }
    mutex->owner=0;
    UNLOCK(mutex);
  }
  else if (mutex->kind==PTHREAD_MUTEX_ERRORCHECK_NP) {
    return EPERM;
  }
  return 0;
}
int __pthread_mutex_unlock(pthread_mutex_t*mutex,_pthread_descr this)
__attribute__((alias("__thread_mutex_unlock")));

int pthread_mutex_unlock(pthread_mutex_t*mutex) {
  return __thread_mutex_unlock(mutex,__thread_self());
}