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/**
* @file rtems/rtems/sem.inl
*
* This file contains the static inlin implementation of the inlined
* routines from the Semaphore Manager.
*/
/* COPYRIGHT (c) 1989-2008.
* 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.
*/
#ifndef _RTEMS_RTEMS_SEM_H
# error "Never use <rtems/rtems/sem.inl> directly; include <rtems/rtems/sem.h> instead."
#endif
#ifndef _RTEMS_RTEMS_SEM_INL
#define _RTEMS_RTEMS_SEM_INL
/**
* @addtogroup ClassicSem
* @{
*/
/**
* @brief Semaphore_Allocate
*
* This function allocates a semaphore control block from
* the inactive chain of free semaphore control blocks.
*/
RTEMS_INLINE_ROUTINE Semaphore_Control *_Semaphore_Allocate( void )
{
return (Semaphore_Control *) _Objects_Allocate( &_Semaphore_Information );
}
/**
* @brief Semaphore_Free
*
* This routine frees a semaphore control block to the
* inactive chain of free semaphore control blocks.
*/
RTEMS_INLINE_ROUTINE void _Semaphore_Free (
Semaphore_Control *the_semaphore
)
{
_Objects_Free( &_Semaphore_Information, &the_semaphore->Object );
}
/**
* @brief Semaphore_Get
*
* This function maps semaphore IDs to semaphore control blocks.
* If ID corresponds to a local semaphore, then it returns
* the_semaphore control pointer which maps to ID and location
* is set to OBJECTS_LOCAL. if the semaphore ID is global and
* resides on a remote node, then location is set to OBJECTS_REMOTE,
* and the_semaphore is undefined. Otherwise, location is set
* to OBJECTS_ERROR and the_semaphore is undefined.
*/
RTEMS_INLINE_ROUTINE Semaphore_Control *_Semaphore_Get (
Objects_Id id,
Objects_Locations *location
)
{
return (Semaphore_Control *)
_Objects_Get( &_Semaphore_Information, id, location );
}
/**
* @brief Semaphore_Get (Interrupts disabled)
*
* This function maps semaphore IDs to semaphore control blocks.
* If ID corresponds to a local semaphore, then it returns
* the_semaphore control pointer which maps to ID and location
* is set to OBJECTS_LOCAL. if the semaphore ID is global and
* resides on a remote node, then location is set to OBJECTS_REMOTE,
* and the_semaphore is undefined. Otherwise, location is set
* to OBJECTS_ERROR and the_semaphore is undefined.
*/
RTEMS_INLINE_ROUTINE Semaphore_Control *_Semaphore_Get_interrupt_disable (
Objects_Id id,
Objects_Locations *location,
ISR_Level *level
)
{
return (Semaphore_Control *)
_Objects_Get_isr_disable( &_Semaphore_Information, id, location, level );
}
/**
* @brief Semaphore_Is_null
*
* This function returns TRUE if the_semaphore is NULL and FALSE otherwise.
*/
RTEMS_INLINE_ROUTINE bool _Semaphore_Is_null (
Semaphore_Control *the_semaphore
)
{
return ( the_semaphore == NULL );
}
/**@}*/
#endif
/* end of include file */
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