49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/*
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* $QNXLicenseC:
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* Copyright 2007, QNX Software Systems. All Rights Reserved.
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*
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* You must obtain a written license from and pay applicable license fees to QNX
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* Software Systems before you may reproduce, modify or distribute this software,
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* or any work that includes all or part of this software. Free development
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* licenses are available for evaluation and non-commercial purposes. For more
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* information visit http://licensing.qnx.com or email licensing@qnx.com.
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*
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* This file may contain contributions from others. Please review this entire
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* file for other proprietary rights or license notices, as well as the QNX
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* Development Suite License Guide at http://licensing.qnx.com/license-guide/
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* for other information.
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* $
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*/
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#include <time.h>
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#include <errno.h>
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#include <sched.h>
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#include <sys/types.h>
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#include <sys/neutrino.h>
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int qnx_scheduler(pid_t proc, pid_t pid, int alg, int prio, int ret) {
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struct sched_param param;
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int policy;
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if(proc && proc != 1) {
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errno = EHOSTUNREACH;
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return(-1);
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}
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if((policy = SchedGet(pid, 1, ¶m)) == -1)
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return(-1);
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ret = ret ? policy : param.sched_priority;
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if(alg != -1 || prio != -1) {
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alg = (alg == -1) ? SCHED_NOCHANGE : alg;
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if(prio != -1) param.sched_priority = prio;
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if(SchedSet(pid, 1, alg, ¶m) == -1)
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return(-1);
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}
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return(ret);
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}
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