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62 lines
2.8 KiB
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62 lines
2.8 KiB
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.. SPDX-License-Identifier: CC-BY-SA-4.0
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.. Copyright (C) 2021 embedded brains GmbH & Co. KG
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.. Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
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.. This file is part of the RTEMS quality process and was automatically
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.. generated. If you find something that needs to be fixed or
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.. worded better please post a report or patch to an RTEMS mailing list
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.. or raise a bug report:
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..
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.. https://www.rtems.org/bugs.html
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..
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.. For information on updating and regenerating please refer to the How-To
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.. section in the Software Requirements Engineering chapter of the
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.. RTEMS Software Engineering manual. The manual is provided as a part of
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.. a release. For development sources please refer to the online
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.. documentation at:
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..
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.. https://docs.rtems.org
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.. Generated from spec:/rtems/mp/if/group
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.. _MultiprocessingManagerIntroduction:
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Introduction
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============
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.. The following list was generated from:
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.. spec:/rtems/mp/if/announce
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The Multiprocessing Manager provides support for heterogeneous multiprocessing
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systems based on message passing in a network of multiprocessing nodes.
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In multiprocessor real-time systems, new requirements, such as sharing data and
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global resources between processors, are introduced. This requires an
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efficient and reliable communications vehicle which allows all processors to
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communicate with each other as necessary. In addition, the ramifications of
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multiple processors affect each and every characteristic of a real-time system,
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almost always making them more complicated.
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RTEMS addresses these issues by providing simple and flexible real-time
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multiprocessing capabilities. The executive easily lends itself to both
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tightly-coupled and loosely-coupled configurations of the target system
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hardware. In addition, RTEMS supports systems composed of both homogeneous and
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heterogeneous mixtures of processors and target boards.
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A major design goal of the RTEMS executive was to transcend the physical
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boundaries of the target hardware configuration. This goal is achieved by
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presenting the application software with a logical view of the target system
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where the boundaries between processor nodes are transparent. As a result, the
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application developer may designate objects such as tasks, queues, events,
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signals, semaphores, and memory blocks as global objects. These global objects
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may then be accessed by any task regardless of the physical location of the
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object and the accessing task. RTEMS automatically determines that the object
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being accessed resides on another processor and performs the actions required
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to access the desired object. Simply stated, RTEMS allows the entire system,
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both hardware and software, to be viewed logically as a single system. The
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directives provided by the Multiprocessing Manager are:
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* :ref:`InterfaceRtemsMultiprocessingAnnounce` - Announces the arrival of a
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packet.
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