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/*

 *  16.1.8 Dynamic Package Initialization, P1003.1c/Draft 10, p. 154

 *

 *  COPYRIGHT (c) 1989-1999.

 *  On-Line Applications Research Corporation (OAR).

 *

 *  The license and distribution terms for this file may be

 *  found in the file LICENSE in this distribution or at

 *  http://www.OARcorp.com/rtems/license.html.

 *

 *  $Id: pthreadonce.c,v 1.2 2001-09-27 11:59:17 chris Exp $

 */

#include <pthread.h>

#include <errno.h>

#include <rtems/system.h>

#include <rtems/score/thread.h>

int pthread_once(

  pthread_once_t  *once_control,

  void           (*init_routine)(void)

)

{

  if ( !once_control || !init_routine )

    return EINVAL;

  _Thread_Disable_dispatch();

  if ( !once_control->init_executed ) {

    once_control->is_initialized = TRUE;

    once_control->init_executed = TRUE;

    (*init_routine)();

  }

  _Thread_Enable_dispatch();

  return 0;

}