diff options
Diffstat (limited to 'cpukit/rtems/src')
-rw-r--r-- | cpukit/rtems/src/schedulergetmaxprio.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/cpukit/rtems/src/schedulergetmaxprio.c b/cpukit/rtems/src/schedulergetmaxprio.c new file mode 100644 index 0000000000..a1eef31761 --- /dev/null +++ b/cpukit/rtems/src/schedulergetmaxprio.c @@ -0,0 +1,53 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (C) 2018 embedded brains GmbH + * + * 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_get_maximum_priority( + rtems_id scheduler_id, + rtems_task_priority *priority +) +{ + uint32_t index; + + if ( priority == NULL ) { + return RTEMS_INVALID_ADDRESS; + } + + index = _Scheduler_Get_index_by_id( scheduler_id ); + if ( index >= _Scheduler_Count ) { + return RTEMS_INVALID_ID; + } + + *priority = _Scheduler_Table[ index ].maximum_priority; + return RTEMS_SUCCESSFUL; +} |