/*
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* Copyright (C) 2012 Philippe Gerum <rpm@xenomai.org>.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*/
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#include <vxworks/kernLib.h>
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#include <vxworks/errnoLib.h>
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#include "tickLib.h"
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#include "taskLib.h"
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static int switch_slicing(struct threadobj *thobj, struct timespec *quantum)
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{
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struct sched_param_ex param_ex;
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int policy;
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param_ex.sched_priority = threadobj_get_priority(thobj);
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if (quantum) {
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policy = SCHED_RR;
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param_ex.sched_rr_quantum.tv_sec = quantum->tv_sec;
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param_ex.sched_rr_quantum.tv_nsec = quantum->tv_nsec;
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} else {
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policy = param_ex.sched_priority ? SCHED_FIFO : SCHED_OTHER;
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}
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return threadobj_set_schedparam(thobj, policy, ¶m_ex);
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}
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STATUS kernelTimeSlice(int ticks)
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{
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struct timespec quantum, *p = NULL;
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struct wind_task *task;
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if (ticks) {
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/* Convert VxWorks ticks to timespec. */
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clockobj_ticks_to_timespec(&wind_clock, ticks, &quantum);
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p = &quantum;
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}
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/*
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* Enable/disable round-robin for all threads known by the
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* current process.
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*/
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wind_time_slice = ticks;
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do_each_wind_task(task, switch_slicing(&task->thobj, p));
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return OK;
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}
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