mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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Steffen Vogel
f6b061cb10
git-svn-id: https://zerberus.eonerc.rwth-aachen.de:8443/svn/s2ss/trunk@142 8ec27952-4edc-4aab-86aa-e87bb2611832
65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
/** Configure Scheduler
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @author Mathieu Dubé-Dallaire
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* @copyright 2014, Institute for Automation of Complex Power Systems, EONERC
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* @copyright 2003, OPAL-RT Technologies inc
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* @file
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*/
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#if defined(__QNXNTO__)
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# include <process.h>
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# include <sys/sched.h>
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# include <devctl.h>
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# include <sys/dcmd_chr.h>
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#elif defined(__linux__)
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# define _GNU_SOURCE 1
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# include <sched.h>
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# if defined(__redhawk__)
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# include <cpuset.h>
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# include <mpadvise.h>
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# endif
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#endif
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int AssignProcToCpu0(void)
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{
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#if defined(__linux__)
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#if defined(__redhawk__)
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int rc;
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pid_t pid = getpid();
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cpuset_t *pCpuset;
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pCpuset = cpuset_alloc();
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if (NULL == pCpuset) {
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fprintf(stderr, "Error allocating a cpuset\n");
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return ENOMEM;
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}
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cpuset_init(pCpuset);
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cpuset_set_cpu(pCpuset, 0, 1);
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rc = mpadvise(MPA_PRC_SETBIAS, MPA_TID, pid, pCpuset);
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if (MPA_FAILURE == rc) {
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rc = errno;
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fprintf(stderr, "Error from mpadvise, %d %s, for pid %d\n", errno, strerror(errno), pid);
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cpuset_free(pCpuset);
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return rc;
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}
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cpuset_free(pCpuset);
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return EOK;
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#else
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cpu_set_t bindSet;
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CPU_ZERO(&bindSet);
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CPU_SET(0, &bindSet);
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/* changing process cpu affinity */
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if (sched_setaffinity(0, sizeof(cpu_set_t), &bindSet) != 0) {
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fprintf(stderr, "Unable to bind the process to CPU 0. (sched_setaffinity errno %d)\n", errno );
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return EINVAL;
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}
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return EOK;
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#endif
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#endif /* __linux__ */
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}
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