[5aa64518] | 1 | /* |
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| 2 | * Region Manager |
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| 3 | * |
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| 4 | * |
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[08311cc3] | 5 | * COPYRIGHT (c) 1989-1999. |
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[5aa64518] | 6 | * On-Line Applications Research Corporation (OAR). |
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| 7 | * |
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| 8 | * The license and distribution terms for this file may be |
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| 9 | * found in the file LICENSE in this distribution or at |
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[277cc95] | 10 | * http://www.rtems.com/license/LICENSE. |
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[5aa64518] | 11 | * |
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| 12 | * $Id$ |
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| 13 | */ |
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| 14 | |
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| 15 | #include <rtems/system.h> |
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| 16 | #include <rtems/rtems/status.h> |
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| 17 | #include <rtems/rtems/support.h> |
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| 18 | #include <rtems/score/object.h> |
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| 19 | #include <rtems/rtems/options.h> |
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| 20 | #include <rtems/rtems/region.h> |
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| 21 | #include <rtems/score/states.h> |
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| 22 | #include <rtems/score/thread.h> |
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[90015e7f] | 23 | #include <rtems/score/apimutex.h> |
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[5aa64518] | 24 | |
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| 25 | /*PAGE |
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| 26 | * |
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| 27 | * rtems_region_get_segment_size |
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| 28 | * |
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| 29 | * This directive will return the size of the segment indicated |
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| 30 | * |
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| 31 | * Input parameters: |
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| 32 | * id - region id |
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| 33 | * segment - segment address |
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| 34 | * size - pointer to segment size in bytes |
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| 35 | * |
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| 36 | * Output parameters: |
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| 37 | * size - segment size in bytes filled in |
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| 38 | * RTEMS_SUCCESSFUL - if successful |
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| 39 | * error code - if unsuccessful |
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| 40 | */ |
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| 41 | |
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| 42 | rtems_status_code rtems_region_get_segment_size( |
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| 43 | Objects_Id id, |
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| 44 | void *segment, |
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[6cd05d2] | 45 | size_t *size |
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[5aa64518] | 46 | ) |
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| 47 | { |
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| 48 | register Region_Control *the_region; |
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| 49 | Objects_Locations location; |
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| 50 | Thread_Control *executing; |
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| 51 | |
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[90015e7f] | 52 | _RTEMS_Lock_allocator(); |
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[5aa64518] | 53 | executing = _Thread_Executing; |
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| 54 | the_region = _Region_Get( id, &location ); |
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| 55 | switch ( location ) { |
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| 56 | case OBJECTS_REMOTE: /* this error cannot be returned */ |
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[90015e7f] | 57 | _RTEMS_Unlock_allocator(); |
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[5aa64518] | 58 | return RTEMS_INTERNAL_ERROR; |
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| 59 | |
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| 60 | case OBJECTS_ERROR: |
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[90015e7f] | 61 | _RTEMS_Unlock_allocator(); |
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[5aa64518] | 62 | return RTEMS_INVALID_ID; |
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| 63 | |
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| 64 | case OBJECTS_LOCAL: |
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| 65 | |
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| 66 | if ( _Heap_Size_of_user_area( &the_region->Memory, segment, size ) ) { |
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[90015e7f] | 67 | _RTEMS_Unlock_allocator(); |
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[5aa64518] | 68 | return RTEMS_SUCCESSFUL; |
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| 69 | } |
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[90015e7f] | 70 | _RTEMS_Unlock_allocator(); |
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[5aa64518] | 71 | return RTEMS_INVALID_ADDRESS; |
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| 72 | } |
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| 73 | |
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| 74 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
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| 75 | } |
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