source: rtems/cpukit/score/src/stackallocatorforidle.c @ 45ee958

Last change on this file since 45ee958 was 45ee958, checked in by Sebastian Huber <sebastian.huber@…>, on 09/30/22 at 06:06:18

config: Add CONFIGURE_IDLE_TASK_STORAGE_SIZE

By default, allocate the IDLE task storage areas from the RTEMS Workspace.
This avoids having to estimate the thread-local storage size in the default
configuration.

Add the application configuration option CONFIGURE_IDLE_TASK_STORAGE_SIZE to
request a static allocation of the task storage area for IDLE tasks.

Update #3835.
Update #4524.

  • Property mode set to 100644
File size: 2.1 KB
Line 
1/* SPDX-License-Identifier: BSD-2-Clause */
2
3/**
4 * @file
5 *
6 * @ingroup RTEMSScoreStack
7 *
8 * @brief This source file contains the implementation of
9 *   _Stack_Allocator_allocate_for_idle_static().
10 */
11
12/*
13 * Copyright (C) 2021 On-Line Applications Research Corporation (OAR)
14 *
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
17 * are met:
18 * 1. Redistributions of source code must retain the above copyright
19 *    notice, this list of conditions and the following disclaimer.
20 * 2. Redistributions in binary form must reproduce the above copyright
21 *    notice, this list of conditions and the following disclaimer in the
22 *    documentation and/or other materials provided with the distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#ifdef HAVE_CONFIG_H
38#include "config.h"
39#endif
40
41#include <rtems/score/stack.h>
42#include <rtems/score/assert.h>
43
44void *_Stack_Allocator_allocate_for_idle_static(
45  uint32_t  cpu_index,
46  size_t   *storage_size
47)
48{
49  size_t size;
50
51  size = _Stack_Allocator_allocate_for_idle_storage_size;
52  *storage_size = size;
53#if defined(RTEMS_SMP)
54  return &_Stack_Allocator_allocate_for_idle_storage_areas[ cpu_index * size ];
55#else
56  _Assert( cpu_index == 0 );
57  return &_Stack_Allocator_allocate_for_idle_storage_areas[ 0 ];
58#endif
59}
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