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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [regiondelete.c] - Rev 30
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/* * Region 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: regiondelete.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/score/object.h> #include <rtems/rtems/options.h> #include <rtems/rtems/region.h> #include <rtems/score/states.h> #include <rtems/score/thread.h> /*PAGE * * rtems_region_delete * * This directive allows a thread to delete a region specified by * the region identifier, provided that none of its segments are * still allocated. * * Input parameters: * id - region id * * Output parameters: * RTEMS_SUCCESSFUL - if successful * error code - if unsuccessful */ rtems_status_code rtems_region_delete( Objects_Id id ) { register Region_Control *the_region; Objects_Locations location; the_region = _Region_Get( id, &location ); switch ( location ) { case OBJECTS_REMOTE: /* this error cannot be returned */ return RTEMS_INTERNAL_ERROR; case OBJECTS_ERROR: return RTEMS_INVALID_ID; case OBJECTS_LOCAL: _Region_Debug_Walk( the_region, 5 ); if ( the_region->number_of_used_blocks == 0 ) { _Objects_Close( &_Region_Information, &the_region->Object ); _Region_Free( the_region ); _Thread_Enable_dispatch(); return RTEMS_SUCCESSFUL; } _Thread_Enable_dispatch(); return RTEMS_RESOURCE_IN_USE; } return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ }
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