mirror of https://github.com/dzavalishin/oskit/
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
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/*
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* Copyright (c) 1996, 1998-2000 University of Utah and the Flux Group.
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* All rights reserved.
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*
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* This file is part of the Flux OSKit. The OSKit is free software, also known
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* as "open source;" you can redistribute it and/or modify it under the terms
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* of the GNU General Public License (GPL), version 2, as published by the Free
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* Software Foundation (FSF). To explore alternate licensing terms, contact
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* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
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*
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* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
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* received a copy of the GPL along with the OSKit; see the file COPYING. If
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* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
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*/
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/*
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* Set priority of a thread.
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*/
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#include <threads/pthread_internal.h>
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int
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oskit_pthread_setprio(pthread_t tid, int prio)
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{
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pthread_thread_t *pthread;
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struct sched_param param;
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if ((pthread = tidtothread(tid)) == NULL_THREADPTR)
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return EINVAL;
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if (prio < PRIORITY_MIN || prio > PRIORITY_MAX)
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return EINVAL;
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param.priority = prio;
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assert_preemption_enabled();
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disable_preemption();
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/*
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* Pass this off to the scheduler module. The simple POSIX
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* model allows the policy and priority to be changed, so
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* indicate no-change to policy with a -1.
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*/
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pthread_sched_change_state(pthread, -1, ¶m);
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enable_preemption();
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return 0;
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}
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