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/*
* RTEMS Task Manager
*
*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* 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.
*
* $Id$
*/
#include <rtems/system.h>
#include <rtems/rtems/status.h>
#include <rtems/rtems/support.h>
#include <rtems/rtems/modes.h>
#include <rtems/score/object.h>
#include <rtems/score/stack.h>
#include <rtems/score/states.h>
#include <rtems/rtems/tasks.h>
#include <rtems/score/thread.h>
#include <rtems/score/threadq.h>
#include <rtems/score/tod.h>
#include <rtems/score/userext.h>
#include <rtems/score/wkspace.h>
#include <rtems/score/apiext.h>
#include <rtems/score/sysstate.h>
/*PAGE
*
* rtems_task_start
*
* This directive readies the thread identified by the "id"
* based on its current priorty, to await execution. A thread
* can be started only from the dormant state.
*
* Input parameters:
* id - thread id
* entry_point - start execution address of thread
* argument - thread argument
*
* Output parameters:
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*/
rtems_status_code rtems_task_start(
rtems_id id,
rtems_task_entry entry_point,
unsigned32 argument
)
{
register Thread_Control *the_thread;
Objects_Locations location;
if ( entry_point == NULL )
return RTEMS_INVALID_ADDRESS;
the_thread = _Thread_Get( id, &location );
switch ( location ) {
case OBJECTS_REMOTE:
#if defined(RTEMS_MULTIPROCESSING)
_Thread_Dispatch();
return RTEMS_ILLEGAL_ON_REMOTE_OBJECT;
#endif
case OBJECTS_ERROR:
return RTEMS_INVALID_ID;
case OBJECTS_LOCAL:
if ( _Thread_Start(
the_thread, THREAD_START_NUMERIC, entry_point, NULL, argument ) ) {
_Thread_Enable_dispatch();
return RTEMS_SUCCESSFUL;
}
_Thread_Enable_dispatch();
return RTEMS_INCORRECT_STATE;
}
return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */
}
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