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-rw-r--r--cpukit/rtems/src/event.c383
1 files changed, 0 insertions, 383 deletions
diff --git a/cpukit/rtems/src/event.c b/cpukit/rtems/src/event.c
deleted file mode 100644
index ab00bc757e..0000000000
--- a/cpukit/rtems/src/event.c
+++ /dev/null
@@ -1,383 +0,0 @@
-/*
- * Event Manager
- *
- * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
- * On-Line Applications Research Corporation (OAR).
- * All rights assigned to U.S. Government, 1994.
- *
- * This material may be reproduced by or for the U.S. Government pursuant
- * to the copyright license under the clause at DFARS 252.227-7013. This
- * notice must appear in all copies of this file and its derivatives.
- *
- * $Id$
- */
-
-#include <rtems/system.h>
-#include <rtems/rtems/status.h>
-#include <rtems/rtems/event.h>
-#include <rtems/score/isr.h>
-#include <rtems/score/object.h>
-#include <rtems/rtems/options.h>
-#include <rtems/score/states.h>
-#include <rtems/score/thread.h>
-#include <rtems/rtems/tasks.h>
-
-/*PAGE
- *
- * _Event_Manager_initialization
- *
- * DESCRIPTION:
- *
- * This routine performs the initialization necessary for this manager.
- */
-
-void _Event_Manager_initialization( void )
-{
- _Event_Sync_state = EVENT_SYNC_SYNCHRONIZED;
-
- /*
- * Register the MP Process Packet routine.
- */
-
- _MPCI_Register_packet_processor( MP_PACKET_EVENT, _Event_MP_Process_packet );
-}
-
-/*PAGE
- *
- * rtems_event_send
- *
- * This directive allows a thread send an event set to another thread.
- *
- * Input parameters:
- * id - thread id
- * event - event set
- *
- * Output parameters:
- * RTEMS_SUCCESSFUL - if successful
- * error code - if unsuccessful
- */
-
-rtems_status_code rtems_event_send(
- Objects_Id id,
- rtems_event_set event_in
-)
-{
- register Thread_Control *the_thread;
- Objects_Locations location;
- RTEMS_API_Control *api;
-
- the_thread = _Thread_Get( id, &location );
- switch ( location ) {
- case OBJECTS_ERROR:
- return RTEMS_INVALID_ID;
- case OBJECTS_REMOTE:
- return(
- _Event_MP_Send_request_packet(
- EVENT_MP_SEND_REQUEST,
- id,
- event_in
- )
- );
- case OBJECTS_LOCAL:
- api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
- _Event_sets_Post( event_in, &api->pending_events );
- _Event_Surrender( the_thread );
- _Thread_Enable_dispatch();
- return RTEMS_SUCCESSFUL;
- }
-
- return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */
-}
-
-/*PAGE
- *
- * rtems_event_receive
- *
- * This directive allows a thread to receive a set of events.
- *
- * Input parameters:
- * event_in - input event condition
- * option_set - options
- * ticks - number of ticks to wait (0 means wait forever)
- * event_out - pointer to output event set
- *
- * Output parameters:
- * event out - event set
- * RTEMS_SUCCESSFUL - if successful
- * error code - if unsuccessful
- */
-
-rtems_status_code rtems_event_receive(
- rtems_event_set event_in,
- rtems_option option_set,
- rtems_interval ticks,
- rtems_event_set *event_out
-)
-{
- RTEMS_API_Control *api;
-
- api = _Thread_Executing->API_Extensions[ THREAD_API_RTEMS ];
-
- if ( _Event_sets_Is_empty( event_in ) ) {
- *event_out = api->pending_events;
- return RTEMS_SUCCESSFUL;
- }
-
- _Thread_Disable_dispatch();
- _Event_Seize( event_in, option_set, ticks, event_out );
- _Thread_Enable_dispatch();
- return( _Thread_Executing->Wait.return_code );
-}
-
-
-/*PAGE
- *
- * _Event_Seize
- *
- * This routine attempts to satisfy the requested event condition
- * for the running thread.
- *
- * Input parameters:
- * event_in - the event condition to satisfy
- * option_set - acquire event options
- * ticks - interval to wait
- * event_out - pointer to event set output area
- *
- * Output parameters: NONE
- * *event_out - event set output area filled in
- *
- * INTERRUPT LATENCY:
- * available
- * wait
- * check sync
- */
-
-void _Event_Seize(
- rtems_event_set event_in,
- rtems_option option_set,
- rtems_interval ticks,
- rtems_event_set *event_out
-)
-{
- Thread_Control *executing;
- rtems_event_set seized_events;
- rtems_event_set pending_events;
- ISR_Level level;
- RTEMS_API_Control *api;
- Event_Sync_states sync_state;
-
- executing = _Thread_Executing;
- executing->Wait.return_code = RTEMS_SUCCESSFUL;
-
- api = executing->API_Extensions[ THREAD_API_RTEMS ];
-
- _ISR_Disable( level );
- pending_events = api->pending_events;
- seized_events = _Event_sets_Get( pending_events, event_in );
-
- if ( !_Event_sets_Is_empty( seized_events ) &&
- (seized_events == event_in || _Options_Is_any( option_set )) ) {
- api->pending_events =
- _Event_sets_Clear( pending_events, seized_events );
- _ISR_Enable( level );
- *event_out = seized_events;
- return;
- }
-
- if ( _Options_Is_no_wait( option_set ) ) {
- _ISR_Enable( level );
- executing->Wait.return_code = RTEMS_UNSATISFIED;
- *event_out = seized_events;
- return;
- }
-
- _Event_Sync_state = EVENT_SYNC_NOTHING_HAPPENED;
-
- executing->Wait.option = (unsigned32) option_set;
- executing->Wait.count = (unsigned32) event_in;
- executing->Wait.return_argument = event_out;
-
- _ISR_Enable( level );
-
- if ( ticks ) {
- _Watchdog_Initialize(
- &executing->Timer,
- _Event_Timeout,
- executing->Object.id,
- NULL
- );
- _Watchdog_Insert_ticks( &executing->Timer, ticks );
- }
-
- _Thread_Set_state( executing, STATES_WAITING_FOR_EVENT );
-
- _ISR_Disable( level );
-
- sync_state = _Event_Sync_state;
- _Event_Sync_state = EVENT_SYNC_SYNCHRONIZED;
-
- switch ( sync_state ) {
- case EVENT_SYNC_SYNCHRONIZED:
- /*
- * This cannot happen. It indicates that this routine did not
- * enter the synchronization states above.
- */
- return;
-
- case EVENT_SYNC_NOTHING_HAPPENED:
- _ISR_Enable( level );
- return;
-
- case EVENT_SYNC_TIMEOUT:
- executing->Wait.return_code = RTEMS_TIMEOUT;
- _ISR_Enable( level );
- _Thread_Unblock( executing );
- return;
-
- case EVENT_SYNC_SATISFIED:
- if ( _Watchdog_Is_active( &executing->Timer ) ) {
- _Watchdog_Deactivate( &executing->Timer );
- _ISR_Enable( level );
- (void) _Watchdog_Remove( &executing->Timer );
- } else
- _ISR_Enable( level );
- _Thread_Unblock( executing );
- return;
- }
-}
-
-/*PAGE
- *
- * _Event_Surrender
- *
- * This routines remove a thread from the specified threadq.
- *
- * Input parameters:
- * the_thread - pointer to thread to be dequeued
- *
- * Output parameters: NONE
- *
- * INTERRUPT LATENCY:
- * before flash
- * after flash
- * check sync
- */
-
-void _Event_Surrender(
- Thread_Control *the_thread
-)
-{
- ISR_Level level;
- rtems_event_set pending_events;
- rtems_event_set event_condition;
- rtems_event_set seized_events;
- rtems_option option_set;
- RTEMS_API_Control *api;
-
- api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
-
- option_set = (rtems_option) the_thread->Wait.option;
-
- _ISR_Disable( level );
- pending_events = api->pending_events;
- event_condition = (rtems_event_set) the_thread->Wait.count;
-
- seized_events = _Event_sets_Get( pending_events, event_condition );
-
- if ( !_Event_sets_Is_empty( seized_events ) ) {
- if ( _States_Is_waiting_for_event( the_thread->current_state ) ) {
- if ( seized_events == event_condition || _Options_Is_any( option_set ) ) {
- api->pending_events =
- _Event_sets_Clear( pending_events, seized_events );
- *(rtems_event_set *)the_thread->Wait.return_argument = seized_events;
-
- _ISR_Flash( level );
-
- if ( !_Watchdog_Is_active( &the_thread->Timer ) ) {
- _ISR_Enable( level );
- _Thread_Unblock( the_thread );
- }
- else {
- _Watchdog_Deactivate( &the_thread->Timer );
- _ISR_Enable( level );
- (void) _Watchdog_Remove( &the_thread->Timer );
- _Thread_Unblock( the_thread );
- }
- return;
- }
- }
-
- switch ( _Event_Sync_state ) {
- case EVENT_SYNC_SYNCHRONIZED:
- case EVENT_SYNC_SATISFIED:
- break;
-
- case EVENT_SYNC_NOTHING_HAPPENED:
- case EVENT_SYNC_TIMEOUT:
- if ( !_Thread_Is_executing( the_thread ) )
- break;
-
- if ( seized_events == event_condition || _Options_Is_any(option_set) ) {
- api->pending_events =
- _Event_sets_Clear( pending_events,seized_events );
- *(rtems_event_set *)the_thread->Wait.return_argument = seized_events;
- _Event_Sync_state = EVENT_SYNC_SATISFIED;
- }
- break;
- }
- }
- _ISR_Enable( level );
-}
-
-/*PAGE
- *
- * _Event_Timeout
- *
- * This routine processes a thread which timeouts while waiting to
- * receive an event_set. It is called by the watchdog handler.
- *
- * Input parameters:
- * id - thread id
- *
- * Output parameters: NONE
- */
-
-void _Event_Timeout(
- Objects_Id id,
- void *ignored
-)
-{
- Thread_Control *the_thread;
- Objects_Locations location;
-
- the_thread = _Thread_Get( id, &location );
- switch ( location ) {
- case OBJECTS_ERROR:
- case OBJECTS_REMOTE: /* impossible */
- break;
- case OBJECTS_LOCAL:
-
- /*
- * If the event manager is not synchronized, then it is either
- * "nothing happened", "timeout", or "satisfied". If the_thread
- * is the executing thread, then it is in the process of blocking
- * and it is the thread which is responsible for the synchronization
- * process.
- *
- * If it is not satisfied, then it is "nothing happened" and
- * this is the "timeout" transition. After a request is satisfied,
- * a timeout is not allowed to occur.
- */
-
- if ( _Event_Sync_state != EVENT_SYNC_SYNCHRONIZED &&
- _Thread_Is_executing( the_thread ) ) {
- if ( _Event_Sync_state != EVENT_SYNC_SATISFIED )
- _Event_Sync_state = EVENT_SYNC_TIMEOUT;
- } else {
- the_thread->Wait.return_code = RTEMS_TIMEOUT;
- _Thread_Unblock( the_thread );
- }
- _Thread_Unnest_dispatch();
- break;
- }
-}
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