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rtems: Add rtems_scheduler_map_priority_to_posix()

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Update #3881.
This commit is contained in:
Sebastian Huber
2020-02-24 14:06:16 +01:00
parent fd8c87a8cf
commit 38736c69f8
4 changed files with 134 additions and 7 deletions
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1
cpukit/Makefile.am
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@@ -769,6 +769,7 @@ librtemscpu_a_SOURCES += rtems/src/schedulergetprocessorset.c
librtemscpu_a_SOURCES += rtems/src/scheduleridentbyprocessor.c
librtemscpu_a_SOURCES += rtems/src/scheduleridentbyprocessorset.c
librtemscpu_a_SOURCES += rtems/src/schedulerident.c
librtemscpu_a_SOURCES += rtems/src/schedulermaptoposix.c
librtemscpu_a_SOURCES += rtems/src/schedulerremoveprocessor.c
librtemscpu_a_SOURCES += rtems/src/sem.c
librtemscpu_a_SOURCES += rtems/src/semcreate.c

18
cpukit/include/rtems/rtems/tasks.h
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@@ -736,6 +736,24 @@ rtems_status_code rtems_scheduler_get_maximum_priority(
rtems_task_priority *priority
);
/**
* @brief Map a task priority to the corresponding POSIX thread priority.
*
* @param scheduler_id Identifier of the scheduler instance.
* @param priority The task priority to map.
* @param[out] posix_priority Pointer to a POSIX thread priority value.
*
* @retval RTEMS_SUCCESSFUL Successful operation.
* @retval RTEMS_INVALID_ADDRESS The @a posix_priority parameter is @c NULL.
* @retval RTEMS_INVALID_ID Invalid scheduler instance identifier.
* @retval RTEMS_INVALID_PRIORITY Invalid task priority.
*/
rtems_status_code rtems_scheduler_map_priority_to_posix(
rtems_id scheduler_id,
rtems_task_priority priority,
int *posix_priority
);
/**@}*/
#ifdef __cplusplus

70
cpukit/rtems/src/schedulermaptoposix.c Normal file
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@@ -0,0 +1,70 @@
/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup ClassicTasks
*
* @brief Implementation of rtems_scheduler_map_priority_to_posix().
*/
/*
* Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/rtems/tasks.h>
#include <rtems/score/schedulerimpl.h>
rtems_status_code rtems_scheduler_map_priority_to_posix(
rtems_id scheduler_id,
rtems_task_priority priority,
int *posix_priority
)
{
const Scheduler_Control *scheduler;
if ( posix_priority == NULL ) {
return RTEMS_INVALID_ADDRESS;
}
scheduler = _Scheduler_Get_by_id( scheduler_id );
if ( scheduler == NULL ) {
return RTEMS_INVALID_ID;
}
if ( priority < 1 ) {
return RTEMS_INVALID_PRIORITY;
}
if ( priority >= scheduler->maximum_priority ) {
return RTEMS_INVALID_PRIORITY;
}
*posix_priority = (int) ( scheduler->maximum_priority - priority );
return RTEMS_SUCCESSFUL;
}

52
testsuites/sptests/spscheduler01/init.c
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@@ -1,11 +1,5 @@
/*
* Copyright (c) 2014, 2018 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
* Copyright (C) 2014, 2020 embedded brains GmbH (http://www.embedded-brains.de)
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
@@ -497,6 +491,49 @@ static void test_scheduler_get_max_prio(void)
rtems_test_assert(priority == 255);
}
static void test_scheduler_map_to_posix(void)
{
rtems_status_code sc;
int posix_priority;
rtems_id scheduler_id;
posix_priority = 123;
sc = rtems_scheduler_map_priority_to_posix(invalid_id, 1, &posix_priority);
rtems_test_assert(sc == RTEMS_INVALID_ID);
rtems_test_assert(posix_priority == 123);
sc = rtems_task_get_scheduler(RTEMS_SELF, &scheduler_id);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
sc = rtems_scheduler_map_priority_to_posix(scheduler_id, 1, NULL);
rtems_test_assert(sc == RTEMS_INVALID_ADDRESS);
posix_priority = 123;
sc = rtems_scheduler_map_priority_to_posix(scheduler_id, 0, &posix_priority);
rtems_test_assert(sc == RTEMS_INVALID_PRIORITY);
rtems_test_assert(posix_priority == 123);
posix_priority = 123;
sc = rtems_scheduler_map_priority_to_posix(scheduler_id, 255, &posix_priority);
rtems_test_assert(sc == RTEMS_INVALID_PRIORITY);
rtems_test_assert(posix_priority == 123);
posix_priority = 123;
sc = rtems_scheduler_map_priority_to_posix(scheduler_id, 256, &posix_priority);
rtems_test_assert(sc == RTEMS_INVALID_PRIORITY);
rtems_test_assert(posix_priority == 123);
posix_priority = 123;
sc = rtems_scheduler_map_priority_to_posix(scheduler_id, 1, &posix_priority);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
rtems_test_assert(posix_priority == 254);
posix_priority = 123;
sc = rtems_scheduler_map_priority_to_posix(scheduler_id, 254, &posix_priority);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
rtems_test_assert(posix_priority == 1);
}
static void test_scheduler_get_processors(void)
{
rtems_status_code sc;
@@ -625,6 +662,7 @@ static void Init(rtems_task_argument arg)
test_task_get_set_scheduler();
test_scheduler_ident();
test_scheduler_get_max_prio();
test_scheduler_map_to_posix();
test_scheduler_get_processors();
test_scheduler_add_remove_processors();
test_task_get_priority();