source: rtems-docs/c-user/config/event-record.rst @ 1c8ce33

.. SPDX-License-Identifier: CC-BY-SA-4.0

.. Copyright (C) 2019, 2021 embedded brains GmbH (http://www.embedded-brains.de)

.. This file is part of the RTEMS quality process and was automatically
.. generated.  If you find something that needs to be fixed or
.. worded better please post a report or patch to an RTEMS mailing list
.. or raise a bug report:
..
.. https://www.rtems.org/bugs.html
..
.. For information on updating and regenerating please refer to the How-To
.. section in the Software Requirements Engineering chapter of the
.. RTEMS Software Engineering manual.  The manual is provided as a part of
.. a release.  For development sources please refer to the online
.. documentation at:
..
.. https://docs.rtems.org

.. Generated from spec:/acfg/if/group-eventrecord

Event Recording Configuration
=============================

This section describes configuration options related to the event recording.

.. Generated from spec:/acfg/if/record-extensions-enabled

.. raw:: latex

    \clearpage

.. index:: CONFIGURE_RECORD_EXTENSIONS_ENABLED

.. _CONFIGURE_RECORD_EXTENSIONS_ENABLED:

CONFIGURE_RECORD_EXTENSIONS_ENABLED
-----------------------------------

.. rubric:: CONSTANT:

``CONFIGURE_RECORD_EXTENSIONS_ENABLED``

.. rubric:: OPTION TYPE:

This configuration option is a boolean feature define.

.. rubric:: DEFAULT CONFIGURATION:

If this configuration option is undefined, then the described feature is not
enabled.

.. rubric:: DESCRIPTION:

In case

* this configuration option is defined

* and :ref:`CONFIGURE_RECORD_PER_PROCESSOR_ITEMS` is properly defined,

then the event record extensions are enabled.

.. rubric:: NOTES:

The record extensions capture thread create, start, restart, delete, switch,
begin, exitted and terminate events.

.. Generated from spec:/acfg/if/record-fatal-dump-base64

.. raw:: latex

    \clearpage

.. index:: CONFIGURE_RECORD_FATAL_DUMP_BASE64

.. _CONFIGURE_RECORD_FATAL_DUMP_BASE64:

CONFIGURE_RECORD_FATAL_DUMP_BASE64
----------------------------------

.. rubric:: CONSTANT:

``CONFIGURE_RECORD_FATAL_DUMP_BASE64``

.. rubric:: OPTION TYPE:

This configuration option is a boolean feature define.

.. rubric:: DEFAULT CONFIGURATION:

If this configuration option is undefined, then the described feature is not
enabled.

.. rubric:: DESCRIPTION:

In case

* this configuration option is defined

* and :ref:`CONFIGURE_RECORD_PER_PROCESSOR_ITEMS` is properly defined,

* and :ref:`CONFIGURE_RECORD_FATAL_DUMP_BASE64_ZLIB` is undefined,

then the event records are dumped in Base64 encoding in a fatal error
extension (see :ref:`Terminate`).

.. rubric:: NOTES:

This extension can be used to produce crash dumps.

.. Generated from spec:/acfg/if/record-fatal-dump-base64-zlib

.. raw:: latex

    \clearpage

.. index:: CONFIGURE_RECORD_FATAL_DUMP_BASE64_ZLIB

.. _CONFIGURE_RECORD_FATAL_DUMP_BASE64_ZLIB:

CONFIGURE_RECORD_FATAL_DUMP_BASE64_ZLIB
---------------------------------------

.. rubric:: CONSTANT:

``CONFIGURE_RECORD_FATAL_DUMP_BASE64_ZLIB``

.. rubric:: OPTION TYPE:

This configuration option is a boolean feature define.

.. rubric:: DEFAULT CONFIGURATION:

If this configuration option is undefined, then the described feature is not
enabled.

.. rubric:: DESCRIPTION:

In case

* this configuration option is defined

* and :ref:`CONFIGURE_RECORD_PER_PROCESSOR_ITEMS` is properly defined,

then the event records are compressed by zlib and dumped in Base64 encoding
in a fatal error extension (see :ref:`Terminate`).

.. rubric:: NOTES:

The zlib compression needs about 512KiB of RAM.  This extension can be used
to produce crash dumps.

.. Generated from spec:/acfg/if/record-per-processor-items

.. raw:: latex

    \clearpage

.. index:: CONFIGURE_RECORD_PER_PROCESSOR_ITEMS

.. _CONFIGURE_RECORD_PER_PROCESSOR_ITEMS:

CONFIGURE_RECORD_PER_PROCESSOR_ITEMS
------------------------------------

.. rubric:: CONSTANT:

``CONFIGURE_RECORD_PER_PROCESSOR_ITEMS``

.. rubric:: OPTION TYPE:

This configuration option is an integer define.

.. rubric:: DEFAULT VALUE:

The default value is 0.

.. rubric:: DESCRIPTION:

The value of this configuration option defines the event record item count
per processor.

.. rubric:: NOTES:

The event record buffers are statically allocated for each configured
processor (:ref:`CONFIGURE_MAXIMUM_PROCESSORS`).  If the value of this
configuration option is zero, then nothing is allocated.

.. rubric:: CONSTRAINTS:

The following constraints apply to this configuration option:

* The value of the configuration option shall be greater than or equal to 16.

* The value of the configuration option shall be less than or equal to
  `SIZE_MAX <https://en.cppreference.com/w/c/types/limits>`_.

* The value of the configuration option shall be a power of two.

* The value of the configuration option shall be less than or equal to a
  BSP-specific and application-specific value which depends on the size of the
  memory available to the application.