RTEMS 4.10.2 On-Line Library

Key Concepts Object IDs

RTEMS Ada User's Guide

2.2.2: Object IDs

Key Concepts Thirty-Two Object ID Format

Key Concepts Sixteen Bit Object ID Format

An object ID is a unique unsigned integer value which uniquely identifies an object instance. Object IDs are passed as arguments to many directives in RTEMS and RTEMS translates the ID to an internal object pointer. The efficient manipulation of object IDs is critical to the performance of RTEMS services. Because of this, there are two object Id formats defined. Each target architecture specifies which format it will use. There is a thirty-two bit format which is used for most of the supported architectures and supports multiprocessor configurations. There is also a simpler sixteen bit format which is appropriate for smaller target architectures and does not support multiprocessor configurations.

RTEMS Ada User's Guide