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/**
* @file
*
* @ingroup ClassicEventImpl
*
* @brief Classic Event Implementation
*/
/* 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_EVENTIMPL_H
#define _RTEMS_RTEMS_EVENTIMPL_H
#include <rtems/rtems/event.h>
#include <rtems/score/thread.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup ClassicEventImpl Classic Event Implementation
*
* @ingroup ClassicEvent
*
* @{
*/
/**
* This constant is defined to extern most of the time when using
* this header file. However by defining it to nothing, the data
* declared in this header file can be instantiated. This is done
* in a single per manager file.
*/
#ifndef RTEMS_EVENT_EXTERN
#define RTEMS_EVENT_EXTERN extern
#endif
/**
* This constant is passed as the event_in to the
* rtems_event_receive directive to determine which events are pending.
*/
#define EVENT_CURRENT 0
/**
* The following constant is the value of an event set which
* has no events pending.
*/
#define EVENT_SETS_NONE_PENDING 0
RTEMS_EVENT_EXTERN Thread_blocking_operation_States _Event_Sync_state;
RTEMS_EVENT_EXTERN Thread_blocking_operation_States _System_event_Sync_state;
/**
* @brief Event Manager Initialization
*
* Event Manager
*
* This routine performs the initialization necessary for this manager.
*
* - INTERRUPT LATENCY:
* + single case
*/
void _Event_Manager_initialization( void );
void _Event_Seize(
rtems_event_set event_in,
rtems_option option_set,
rtems_interval ticks,
rtems_event_set *event_out,
Thread_Control *executing,
Event_Control *event,
Thread_blocking_operation_States *sync_state,
States_Control wait_state
);
/**
* @brief Surrender Event
*
* - INTERRUPT LATENCY:
* + before flash
* + after flash
* + check sync
*/
void _Event_Surrender(
Thread_Control *the_thread,
rtems_event_set event_in,
Event_Control *event,
Thread_blocking_operation_States *sync_state,
States_Control wait_state
);
/**
* @brief Timeout Event
*/
void _Event_Timeout(
Objects_Id id,
void *arg
);
RTEMS_INLINE_ROUTINE void _Event_Initialize( Event_Control *event )
{
event->pending_events = EVENT_SETS_NONE_PENDING;
}
/**
* @brief Checks if on events are posted in the event_set.
*
* This function returns TRUE if on events are posted in the event_set,
* and FALSE otherwise.
*/
RTEMS_INLINE_ROUTINE bool _Event_sets_Is_empty(
rtems_event_set the_event_set
)
{
return ( the_event_set == 0 );
}
/**
* @brief Posts the given new_events into the event_set passed in.
*
* This routine posts the given new_events into the event_set
* passed in. The result is returned to the user in event_set.
*/
RTEMS_INLINE_ROUTINE void _Event_sets_Post(
rtems_event_set the_new_events,
rtems_event_set *the_event_set
)
{
*the_event_set |= the_new_events;
}
/**
* @brief Returns the events in event_condition that are set in event_set.
*
* This function returns the events in event_condition which are
* set in event_set.
*/
RTEMS_INLINE_ROUTINE rtems_event_set _Event_sets_Get(
rtems_event_set the_event_set,
rtems_event_set the_event_condition
)
{
return ( the_event_set & the_event_condition );
}
/**
* @brief Removes the events in mask from the event_set passed in.
*
* This function removes the events in mask from the event_set
* passed in. The result is returned to the user in event_set.
*/
RTEMS_INLINE_ROUTINE rtems_event_set _Event_sets_Clear(
rtems_event_set the_event_set,
rtems_event_set the_mask
)
{
return ( the_event_set & ~(the_mask) );
}
/**@}*/
#ifdef __cplusplus
}
#endif
#if defined(RTEMS_MULTIPROCESSING)
#include <rtems/rtems/eventmp.h>
#endif
#endif
/* end of include file */
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