timer.inl

来自「RTEMS (Real-Time Executive for Multiproc」· INL 代码 · 共 91 行

/*  timer.inl
 *
 *  This file contains the static inline implementation of the inlined routines
 *  from the POSIX Timer Manager.
 *
 *  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.rtems.com/license/LICENSE.
 *
 *  $Id: timer.inl,v 1.1.4.1 2003/09/04 18:47:11 joel Exp $
 */

#ifndef __POSIX_TIMER_inl
#define __POSIX_TIMER_inl

/*PAGE
 *
 *  _POSIX_Timer_Allocate
 *
 *  DESCRIPTION:
 *
 *  This function allocates a timer control block from
 *  the inactive chain of free timer control blocks.
 */

RTEMS_INLINE_ROUTINE POSIX_Timer_Control *_POSIX_Timer_Allocate( void )
{
  return (POSIX_Timer_Control *) _Objects_Allocate( &_POSIX_Timer_Information );
}

/*PAGE
 *
 *  _POSIX_Timer_Free
 *
 *  DESCRIPTION:
 *
 *  This routine frees a timer control block to the
 *  inactive chain of free timer control blocks.
 */

RTEMS_INLINE_ROUTINE void _POSIX_Timer_Free (
  POSIX_Timer_Control *the_timer
)
{
  _Objects_Free( &_POSIX_Timer_Information, &the_timer->Object );
}

/*PAGE
 *
 *  _POSIX_Timer_Get
 *
 *  DESCRIPTION:
 *
 *  This function maps timer IDs to timer control blocks.
 *  If ID corresponds to a local timer, then it returns
 *  the timer control pointer which maps to ID and location
 *  is set to OBJECTS_LOCAL.  Otherwise, location is set
 *  to OBJECTS_ERROR and the returned value is undefined.
 */

RTEMS_INLINE_ROUTINE POSIX_Timer_Control *_POSIX_Timer_Get (
  Objects_Id         id,
  Objects_Locations *location
)
{
  return (POSIX_Timer_Control *)
    _Objects_Get( &_POSIX_Timer_Information, id, location );
}

/*PAGE
 *
 *  _POSIX_Timer_Is_null
 *
 *  DESCRIPTION:
 *
 *  This function returns TRUE if the_timer is NULL and FALSE otherwise.
 */

RTEMS_INLINE_ROUTINE boolean _POSIX_Timer_Is_null (
  Timer_Control *the_timer
)
{
  return (the_timer == NULL);
}

#endif
/* end of include file */