forked from Imagelibrary/rtems
rtems: Generate <rtems/rtems/barrier.h>
Change license to BSD-2-Clause according to file histories and documentation re-licensing agreement. Update #3899. Update #3993.
This commit is contained in:
Sebastian Huber
@@ -1,22 +1,60 @@
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/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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/**
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* @file
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* @file
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*
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*
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* @ingroup ClassicBarrier
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* @brief This header file defines the Barrier Manager API.
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*
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* @brief Classic Barrier Manager API
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*/
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*/
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/* COPYRIGHT (c) 1989-2008.
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/*
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* On-Line Applications Research Corporation (OAR).
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* Copyright (C) 2020, 2021 embedded brains GmbH (http://www.embedded-brains.de)
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* Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
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*
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*
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* The license and distribution terms for this file may be
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* Redistribution and use in source and binary forms, with or without
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||||||
* found in the file LICENSE in this distribution or at
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* modification, are permitted provided that the following conditions
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* http://www.rtems.org/license/LICENSE.
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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||||||
|
* notice, this list of conditions and the following disclaimer.
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|
* 2. Redistributions in binary form must reproduce the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer in the
|
||||||
|
* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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||||||
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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||||||
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||||
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||||
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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||||||
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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|
* POSSIBILITY OF SUCH DAMAGE.
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*/
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*/
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/*
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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
|
||||||
|
* 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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*/
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/* Generated from spec:/rtems/barrier/if/header */
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#ifndef _RTEMS_RTEMS_BARRIER_H
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#ifndef _RTEMS_RTEMS_BARRIER_H
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#define _RTEMS_RTEMS_BARRIER_H
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#define _RTEMS_RTEMS_BARRIER_H
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#include <stdint.h>
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#include <rtems/rtems/attr.h>
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#include <rtems/rtems/attr.h>
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#include <rtems/rtems/status.h>
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#include <rtems/rtems/status.h>
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#include <rtems/rtems/types.h>
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#include <rtems/rtems/types.h>
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@@ -25,34 +63,104 @@
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extern "C" {
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extern "C" {
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#endif
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#endif
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/* Generated from spec:/rtems/barrier/if/group */
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|
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/**
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/**
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* @defgroup ClassicBarrier Barriers
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* @defgroup RTEMSAPIClassicBarrier Barrier Manager
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*
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*
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* @ingroup RTEMSAPIClassic
|
* @ingroup RTEMSAPIClassic
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*
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*
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* This encapsulates functionality which implements the Classic API
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* @brief The Barrier Manager provides a unique synchronization capability
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* Barrier Manager.
|
* which can be used to have a set of tasks block and be unblocked as a set.
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*/
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*/
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/**@{*/
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/* Generated from spec:/rtems/barrier/if/create */
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/**
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/**
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* @brief RTEMS Create Barrier
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* @ingroup RTEMSAPIClassicBarrier
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*
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*
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* Barrier Manager -- Create a Barrier Instance
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* @brief Creates a barrier.
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*
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*
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* This routine implements the rtems_barrier_create directive. The
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* @param name is the object name of the barrier.
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* barrier will have the name name. The starting count for
|
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* the barrier is count. The attribute_set determines if
|
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* the barrier is global or local and the thread queue
|
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* discipline. It returns the id of the created barrier in ID.
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*
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*
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* @param[in] name is the name of this barrier instance.
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* @param attribute_set is the attribute set of the barrier.
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* @param[in] attribute_set specifies the attributes of this barrier instance.
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* @param[in] maximum_waiters is the maximum number of threads which will
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* be allowed to concurrently wait at the barrier.
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* @param[out] id will contain the id of this barrier.
|
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*
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*
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* @retval a status code indicating success or the reason for failure.
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* @param maximum_waiters is the maximum count of waiters on an automatic
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* release barrier.
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*
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* @param id is the pointer to an object identifier variable. When the
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* directive call is successful, the identifier of the created barrier will
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* be stored in this variable.
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*
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* This directive creates a barrier which resides on the local node. The
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* barrier has the user-defined object name specified in ``name`` and the
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* initial count specified in ``attribute_set``. The assigned object
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* identifier is returned in ``id``. This identifier is used to access the
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* barrier with other barrier related directives.
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*
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* The **attribute set** specified in ``attribute_set`` is built through a
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* *bitwise or* of the attribute constants described below. Not all
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* combinations of attributes are allowed. Some attributes are mutually
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|
* exclusive. If mutually exclusive attributes are combined, the behaviour is
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* undefined. Attributes not mentioned below are not evaluated by this
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||||||
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* directive and have no effect. Default attributes can be selected by using
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|
* the #RTEMS_DEFAULT_ATTRIBUTES constant.
|
||||||
|
*
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||||||
|
* The **barrier class** is selected by the mutually exclusive
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* #RTEMS_BARRIER_MANUAL_RELEASE and #RTEMS_BARRIER_AUTOMATIC_RELEASE
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|
* attributes.
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|
*
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||||||
|
* * The **manual release class** is the default and can be emphasized through
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* use of the #RTEMS_BARRIER_MANUAL_RELEASE attribute. For this class, there
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|
* is no limit on the number of tasks that will block at the barrier. Only
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|
* when the rtems_barrier_release() directive is invoked, are the tasks
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* waiting at the barrier unblocked.
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|
*
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||||||
|
* * The **automatic release class** is selected by the
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||||||
|
* #RTEMS_BARRIER_AUTOMATIC_RELEASE attribute. For this class, tasks calling
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||||||
|
* the rtems_barrier_wait() directive will block until there are
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||||||
|
* ``maximum_waiters`` minus one tasks waiting at the barrier. When the
|
||||||
|
* ``maximum_waiters`` task invokes the rtems_barrier_wait() directive, the
|
||||||
|
* previous ``maximum_waiters`` - 1 tasks are automatically released and the
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||||||
|
* caller returns.
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||||||
|
*
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||||||
|
* @retval ::RTEMS_SUCCESSFUL The requested operation was successful.
|
||||||
|
*
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||||||
|
* @retval ::RTEMS_INVALID_NAME The ``name`` parameter was invalid.
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||||||
|
*
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||||||
|
* @retval ::RTEMS_INVALID_ADDRESS The ``id`` parameter was NULL.
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||||||
|
*
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||||||
|
* @retval ::RTEMS_INVALID_NUMBER The ``maximum_waiters`` parameter was 0 for
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||||||
|
* an automatic release barrier.
|
||||||
|
*
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||||||
|
* @retval ::RTEMS_TOO_MANY There was no inactive object available to create a
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||||||
|
* barrier. The number of barriers available to the application is
|
||||||
|
* configured through the #CONFIGURE_MAXIMUM_BARRIERS application
|
||||||
|
* configuration option.
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||||||
|
*
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||||||
|
* @par Notes
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||||||
|
* For control and maintenance of the barrier, RTEMS allocates a BCB from the
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|
* local BCB free pool and initializes it.
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||||||
|
*
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||||||
|
* @par Constraints
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||||||
|
* @parblock
|
||||||
|
* The following constraints apply to this directive:
|
||||||
|
*
|
||||||
|
* * The directive may be called from within device driver initialization
|
||||||
|
* context.
|
||||||
|
*
|
||||||
|
* * The directive may be called from within task context.
|
||||||
|
*
|
||||||
|
* * The directive may obtain and release the object allocator mutex. This may
|
||||||
|
* cause the calling task to be preempted.
|
||||||
|
*
|
||||||
|
* * The number of barriers available to the application is configured through
|
||||||
|
* the #CONFIGURE_MAXIMUM_BARRIERS application configuration option.
|
||||||
|
*
|
||||||
|
* * Where the object class corresponding to the directive is configured to use
|
||||||
|
* unlimited objects, the directive may allocate memory from the RTEMS
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||||||
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* Workspace.
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||||||
|
* @endparblock
|
||||||
*/
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*/
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||||||
rtems_status_code rtems_barrier_create(
|
rtems_status_code rtems_barrier_create(
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||||||
rtems_name name,
|
rtems_name name,
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@@ -61,87 +169,185 @@ rtems_status_code rtems_barrier_create(
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rtems_id *id
|
rtems_id *id
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||||||
);
|
);
|
||||||
|
|
||||||
/**
|
/* Generated from spec:/rtems/barrier/if/ident */
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||||||
* @brief RTEMS Barrier name to Id
|
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||||||
*
|
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||||||
* This routine implements the rtems_barrier_ident directive.
|
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* This directive returns the barrier ID associated with name.
|
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||||||
* If more than one barrier is named name, then the barrier
|
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||||||
* to which the ID belongs is arbitrary. node indicates the
|
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||||||
* extent of the search for the ID of the barrier named name.
|
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||||||
* The search can be limited to a particular node or allowed to
|
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||||||
* encompass all nodes.
|
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||||||
*
|
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||||||
* @param[in] name is the name of this barrier instance.
|
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||||||
* @param[out] id will contain the id of this barrier.
|
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||||||
*
|
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||||||
* @retval a status code indicating success or the reason for failure.
|
|
||||||
*/
|
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||||||
rtems_status_code rtems_barrier_ident(
|
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rtems_name name,
|
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rtems_id *id
|
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||||||
);
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||||||
|
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||||||
/**
|
/**
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||||||
* @brief RTEMS Delete Barrier
|
* @ingroup RTEMSAPIClassicBarrier
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||||||
*
|
*
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||||||
* This routine implements the rtems_barrier_delete directive. The
|
* @brief Identifies a barrier by the object name.
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||||||
* barrier indicated by @a id is deleted. The barrier is freed back to the
|
|
||||||
* inactive barrier chain.
|
|
||||||
*
|
*
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||||||
|
* @param name is the object name to look up.
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||||||
*
|
*
|
||||||
* @param[in] id indicates the barrier to delete
|
* @param[out] id is the pointer to an object identifier variable. When the
|
||||||
|
* directive call is successful, the object identifier of an object with the
|
||||||
|
* specified name will be stored in this variable.
|
||||||
*
|
*
|
||||||
* @retval a status code indicating success or the reason for failure.
|
* This directive obtains a barrier identifier associated with the barrier name
|
||||||
|
* specified in ``name``.
|
||||||
|
*
|
||||||
|
* @retval ::RTEMS_SUCCESSFUL The requested operation was successful.
|
||||||
|
*
|
||||||
|
* @retval ::RTEMS_INVALID_ADDRESS The ``id`` parameter was NULL.
|
||||||
|
*
|
||||||
|
* @retval ::RTEMS_INVALID_NAME The ``name`` parameter was 0.
|
||||||
|
*
|
||||||
|
* @retval ::RTEMS_INVALID_NAME There was no object with the specified name on
|
||||||
|
* the local node.
|
||||||
|
*
|
||||||
|
* @par Notes
|
||||||
|
* @parblock
|
||||||
|
* If the barrier name is not unique, then the barrier identifier will match
|
||||||
|
* the first barrier with that name in the search order. However, this barrier
|
||||||
|
* identifier is not guaranteed to correspond to the desired barrier.
|
||||||
|
*
|
||||||
|
* The objects are searched from lowest to the highest index. Only the local
|
||||||
|
* node is searched.
|
||||||
|
*
|
||||||
|
* The barrier identifier is used with other barrier related directives to
|
||||||
|
* access the barrier.
|
||||||
|
* @endparblock
|
||||||
|
*
|
||||||
|
* @par Constraints
|
||||||
|
* @parblock
|
||||||
|
* The following constraints apply to this directive:
|
||||||
|
*
|
||||||
|
* * The directive may be called from within any runtime context.
|
||||||
|
*
|
||||||
|
* * The directive will not cause the calling task to be preempted.
|
||||||
|
* @endparblock
|
||||||
*/
|
*/
|
||||||
rtems_status_code rtems_barrier_delete(
|
rtems_status_code rtems_barrier_ident( rtems_name name, rtems_id *id );
|
||||||
rtems_id id
|
|
||||||
);
|
/* Generated from spec:/rtems/barrier/if/delete */
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* @brief RTEMS Barrier Wait
|
* @ingroup RTEMSAPIClassicBarrier
|
||||||
*
|
*
|
||||||
* This routine implements the rtems_barrier_wait directive. It
|
* @brief Deletes the barrier.
|
||||||
* attempts to wait at the barrier associated with @a id. The calling task
|
|
||||||
* may block waiting for the barrier with an optional timeout of @a timeout
|
|
||||||
* clock ticks.
|
|
||||||
*
|
*
|
||||||
* @param[in] id indicates the barrier to wait at.
|
* @param id is the barrier identifier.
|
||||||
* @param[in] timeout is the maximum length of time in ticks the calling
|
|
||||||
* thread is willing to block.
|
|
||||||
*
|
*
|
||||||
* @retval a status code indicating success or the reason for failure.
|
* This directive deletes the barrier specified by ``id``. All tasks blocked
|
||||||
|
* waiting for the barrier to be released will be readied and returned a status
|
||||||
|
* code which indicates that the barrier was deleted.
|
||||||
|
*
|
||||||
|
* @retval ::RTEMS_SUCCESSFUL The requested operation was successful.
|
||||||
|
*
|
||||||
|
* @retval ::RTEMS_INVALID_ID There was no barrier associated with the
|
||||||
|
* identifier specified by ``id``.
|
||||||
|
*
|
||||||
|
* @par Notes
|
||||||
|
* The BCB for the deleted barrier is reclaimed by RTEMS.
|
||||||
|
*
|
||||||
|
* @par Constraints
|
||||||
|
* @parblock
|
||||||
|
* The following constraints apply to this directive:
|
||||||
|
*
|
||||||
|
* * The directive may be called from within device driver initialization
|
||||||
|
* context.
|
||||||
|
*
|
||||||
|
* * The directive may be called from within task context.
|
||||||
|
*
|
||||||
|
* * The directive may obtain and release the object allocator mutex. This may
|
||||||
|
* cause the calling task to be preempted.
|
||||||
|
*
|
||||||
|
* * The calling task does not have to be the task that created the object.
|
||||||
|
* Any local task that knows the object identifier can delete the object.
|
||||||
|
*
|
||||||
|
* * Where the object class corresponding to the directive is configured to use
|
||||||
|
* unlimited objects, the directive may free memory to the RTEMS Workspace.
|
||||||
|
* @endparblock
|
||||||
*/
|
*/
|
||||||
rtems_status_code rtems_barrier_wait(
|
rtems_status_code rtems_barrier_delete( rtems_id id );
|
||||||
rtems_id id,
|
|
||||||
rtems_interval timeout
|
/* Generated from spec:/rtems/barrier/if/wait */
|
||||||
);
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* @brief RTEMS Barrier Release
|
* @ingroup RTEMSAPIClassicBarrier
|
||||||
*
|
*
|
||||||
* Barrier Manager -- Release Tasks Waitng at a Barrier
|
* @brief Waits at the barrier.
|
||||||
*
|
*
|
||||||
* This routine implements the rtems_barrier_release directive. It
|
* @param id is the barrier identifier.
|
||||||
* unblocks all of the threads waiting on the barrier associated with
|
|
||||||
* @a id. The number of threads unblocked is returned in @a released.
|
|
||||||
*
|
*
|
||||||
|
* @param timeout is the timeout in clock ticks. Use #RTEMS_NO_TIMEOUT to wait
|
||||||
|
* potentially forever.
|
||||||
*
|
*
|
||||||
* @param[in] id indicates the barrier to wait at.
|
* This directive waits at the barrier specified by ``id``. The ``timeout``
|
||||||
* @param[out] released will contain the number of threads unblocked.
|
* parameter defines how long the calling task is willing to wait. Use
|
||||||
|
* #RTEMS_NO_TIMEOUT to wait potentially forever, otherwise set a timeout
|
||||||
|
* interval in clock ticks.
|
||||||
*
|
*
|
||||||
* @retval a status code indicating success or the reason for failure.
|
* Conceptually, the calling task should always be thought of as blocking when
|
||||||
|
* it makes this call and being unblocked when the barrier is released. If the
|
||||||
|
* barrier is configured for manual release, this rule of thumb will always be
|
||||||
|
* valid. If the barrier is configured for automatic release, all callers will
|
||||||
|
* block except for the one which trips the automatic release condition.
|
||||||
|
*
|
||||||
|
* @retval ::RTEMS_SUCCESSFUL The requested operation was successful.
|
||||||
|
*
|
||||||
|
* @retval ::RTEMS_INVALID_ID There was no barrier associated with the
|
||||||
|
* identifier specified by ``id``.
|
||||||
|
*
|
||||||
|
* @retval ::RTEMS_TIMEOUT The timeout happened while the calling task was
|
||||||
|
* waiting at the barrier.
|
||||||
|
*
|
||||||
|
* @retval ::RTEMS_OBJECT_WAS_DELETED The barrier was deleted while the calling
|
||||||
|
* task was waiting at the barrier.
|
||||||
|
*
|
||||||
|
* @par Notes
|
||||||
|
* For automatic release barriers, the maximum count of waiting tasks is
|
||||||
|
* defined during barrier creation, see rtems_barrier_create().
|
||||||
|
*
|
||||||
|
* @par Constraints
|
||||||
|
* @parblock
|
||||||
|
* The following constraints apply to this directive:
|
||||||
|
*
|
||||||
|
* * The directive may be called from within task context.
|
||||||
|
*
|
||||||
|
* * The timeout functionality of the directive requires a clock tick.
|
||||||
|
* @endparblock
|
||||||
*/
|
*/
|
||||||
rtems_status_code rtems_barrier_release(
|
rtems_status_code rtems_barrier_wait( rtems_id id, rtems_interval timeout );
|
||||||
rtems_id id,
|
|
||||||
uint32_t *released
|
|
||||||
);
|
|
||||||
|
|
||||||
/**@}*/
|
/* Generated from spec:/rtems/barrier/if/release */
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @ingroup RTEMSAPIClassicBarrier
|
||||||
|
*
|
||||||
|
* @brief Releases the barrier.
|
||||||
|
*
|
||||||
|
* @param id is the barrier identifier.
|
||||||
|
*
|
||||||
|
* @param[out] released is the pointer to an integer variable. When the
|
||||||
|
* directive call is successful, the number of released tasks will be stored
|
||||||
|
* in this variable.
|
||||||
|
*
|
||||||
|
* This directive releases the barrier specified by ``id``. All tasks waiting
|
||||||
|
* at the barrier will be unblocked. The number of released tasks will be
|
||||||
|
* returned in ``released``.
|
||||||
|
*
|
||||||
|
* @retval ::RTEMS_SUCCESSFUL The requested operation was successful.
|
||||||
|
*
|
||||||
|
* @retval ::RTEMS_INVALID_ADDRESS The ``released`` parameter was NULL.
|
||||||
|
*
|
||||||
|
* @retval ::RTEMS_INVALID_ID There was no barrier associated with the
|
||||||
|
* identifier specified by ``id``.
|
||||||
|
*
|
||||||
|
* @par Constraints
|
||||||
|
* @parblock
|
||||||
|
* The following constraints apply to this directive:
|
||||||
|
*
|
||||||
|
* * The directive may be called from within interrupt context.
|
||||||
|
*
|
||||||
|
* * The directive may be called from within task context.
|
||||||
|
*
|
||||||
|
* * The directive may unblock another task which may preempt the calling task.
|
||||||
|
* @endparblock
|
||||||
|
*/
|
||||||
|
rtems_status_code rtems_barrier_release( rtems_id id, uint32_t *released );
|
||||||
|
|
||||||
#ifdef __cplusplus
|
#ifdef __cplusplus
|
||||||
}
|
}
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
#endif
|
#endif /* _RTEMS_RTEMS_BARRIER_H */
|
||||||
/* end of include file */
|
|
||||||
|
|||||||
Reference in New Issue
Block a user