RTEMS 4.9.2 On-Line Library

Region Manager REGION_GET_SEGMENT_SIZE - Obtain size of a segment

RTEMS Ada User's Guide

14.4.7: REGION_GET_SEGMENT_SIZE - Obtain size of a segment

CALLING SEQUENCE:

procedure Region_Get_Segment_Size (
   ID         : in     RTEMS.ID;
   Segment    : in     RTEMS.Address;
   Size       :    out RTEMS.Unsigned32;
   Result     :    out RTEMS.Status_Codes
);

DIRECTIVE STATUS CODES:

RTEMS.SUCCESSFUL - segment obtained successfully
RTEMS.INVALID_ADDRESS - segment is NULL
RTEMS.INVALID_ADDRESS - size is NULL
RTEMS.INVALID_ID - invalid region id
RTEMS.INVALID_ADDRESS - segment address not in region

DESCRIPTION:

This directive obtains the size in bytes of the specified segment.

NOTES:

The actual length of the allocated segment may be larger than the requested size because a segment size is always a multiple of the region's page size.

RTEMS Ada User's Guide