URL
https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [tasksetpriority.c] - Rev 410
Go to most recent revision | Compare with Previous | Blame | View Log
/* * RTEMS Task 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.OARcorp.com/rtems/license.html. * * $Id: tasksetpriority.c,v 1.2 2001-09-27 11:59:19 chris Exp $ */ #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_set_priority * * This directive changes the priority of the specified thread. * The specified thread can be any thread in the system including * the requesting thread. * * Input parameters: * id - thread id (0 indicates requesting thread) * new_priority - thread priority (0 indicates current priority) * old_priority - pointer to previous priority * * Output parameters: * old_priority - previous priority * RTEMS_SUCCESSFUL - if successful * error code - if unsuccessful */ rtems_status_code rtems_task_set_priority( Objects_Id id, rtems_task_priority new_priority, rtems_task_priority *old_priority ) { register Thread_Control *the_thread; Objects_Locations location; if ( new_priority != RTEMS_CURRENT_PRIORITY && !_RTEMS_tasks_Priority_is_valid( new_priority ) ) return RTEMS_INVALID_PRIORITY; if ( !old_priority ) return RTEMS_INVALID_ADDRESS; the_thread = _Thread_Get( id, &location ); switch ( location ) { case OBJECTS_REMOTE: #if defined(RTEMS_MULTIPROCESSING) _Thread_Executing->Wait.return_argument = old_priority; return _RTEMS_tasks_MP_Send_request_packet( RTEMS_TASKS_MP_SET_PRIORITY_REQUEST, id, new_priority, 0, /* Not used */ 0 /* Not used */ ); #endif case OBJECTS_ERROR: return RTEMS_INVALID_ID; case OBJECTS_LOCAL: /* XXX convert from core priority */ *old_priority = the_thread->current_priority; if ( new_priority != RTEMS_CURRENT_PRIORITY ) { the_thread->real_priority = new_priority; if ( the_thread->resource_count == 0 || the_thread->current_priority > new_priority ) _Thread_Change_priority( the_thread, new_priority, FALSE ); } _Thread_Enable_dispatch(); return RTEMS_SUCCESSFUL; } return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ }
Go to most recent revision | Compare with Previous | Blame | View Log