source: rtems/cpukit/rtems/src/schedulergetmaxprio.c

Last change on this file was 7ee6437, checked in by Sebastian Huber <sebastian.huber@…>, on Dec 6, 2018 at 8:57:01 AM

rtems: Add rtems_scheduler_get_maximum_priority()

Update #3636.

  • Property mode set to 100644
File size: 1.9 KB
Line 
1/*
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (C) 2018 embedded brains GmbH
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#if HAVE_CONFIG_H
29#include "config.h"
30#endif
31
32#include <rtems/rtems/tasks.h>
33#include <rtems/score/schedulerimpl.h>
34
35rtems_status_code rtems_scheduler_get_maximum_priority(
36  rtems_id             scheduler_id,
37  rtems_task_priority *priority
38)
39{
40  uint32_t index;
41
42  if ( priority == NULL ) {
43    return RTEMS_INVALID_ADDRESS;
44  }
45
46  index = _Scheduler_Get_index_by_id( scheduler_id );
47  if ( index >= _Scheduler_Count ) {
48    return RTEMS_INVALID_ID;
49  }
50
51  *priority = _Scheduler_Table[ index ].maximum_priority;
52  return RTEMS_SUCCESSFUL;
53}
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