diff options
author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2020-02-24 14:06:16 +0100 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2020-03-03 07:09:59 +0100 |
commit | 38736c69f84a07838dc18f7357ce5f14e555c860 (patch) | |
tree | ab728b5ec5a65d73062cc3917c97e31ffbb3153a /cpukit/rtems | |
parent | fd8c87a8cf0a309a58dd89221607db028f147391 (diff) |
rtems: Add rtems_scheduler_map_priority_to_posix()
Update #3881.
Diffstat (limited to 'cpukit/rtems')
-rw-r--r-- | cpukit/rtems/src/schedulermaptoposix.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/cpukit/rtems/src/schedulermaptoposix.c b/cpukit/rtems/src/schedulermaptoposix.c new file mode 100644 index 0000000000..6af31520a0 --- /dev/null +++ b/cpukit/rtems/src/schedulermaptoposix.c @@ -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; +} |