diff options
author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-05-17 22:39:20 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-05-17 22:39:20 +0000 |
commit | 5aa64518b5bb046469386afbe530957dbb28a603 (patch) | |
tree | 82857bb660a02dea8a2c457507dfb901535f5df1 /cpukit/rtems/src/regiongetsegmentsize.c | |
parent | Splitting the Thread Handler forced the inclusion of more prototypes. (diff) | |
download | rtems-5aa64518b5bb046469386afbe530957dbb28a603.tar.bz2 |
Split Region Manager into one routine per file.
Diffstat (limited to 'cpukit/rtems/src/regiongetsegmentsize.c')
-rw-r--r-- | cpukit/rtems/src/regiongetsegmentsize.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/cpukit/rtems/src/regiongetsegmentsize.c b/cpukit/rtems/src/regiongetsegmentsize.c new file mode 100644 index 0000000000..726f47cf2d --- /dev/null +++ b/cpukit/rtems/src/regiongetsegmentsize.c @@ -0,0 +1,72 @@ +/* + * Region 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/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_get_segment_size + * + * This directive will return the size of the segment indicated + * + * Input parameters: + * id - region id + * segment - segment address + * size - pointer to segment size in bytes + * + * Output parameters: + * size - segment size in bytes filled in + * RTEMS_SUCCESSFUL - if successful + * error code - if unsuccessful + */ + +rtems_status_code rtems_region_get_segment_size( + Objects_Id id, + void *segment, + unsigned32 *size +) +{ + register Region_Control *the_region; + Objects_Locations location; + Thread_Control *executing; + + executing = _Thread_Executing; + 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: + + if ( _Heap_Size_of_user_area( &the_region->Memory, segment, size ) ) { + _Thread_Enable_dispatch(); + return RTEMS_SUCCESSFUL; + } + _Thread_Enable_dispatch(); + return RTEMS_INVALID_ADDRESS; + } + + return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ +} |