83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/*
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* Copyright (c) 2008, David Xu <davidxu@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#include "namespace.h"
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#include <pthread_np.h>
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#include <sys/param.h>
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#include <sys/cpuset.h>
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#include "un-namespace.h"
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#include "thr_private.h"
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__weak_reference(_pthread_getaffinity_np, pthread_getaffinity_np);
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__weak_reference(_pthread_setaffinity_np, pthread_setaffinity_np);
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int
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_pthread_setaffinity_np(pthread_t td, size_t cpusetsize, const cpuset_t *cpusetp)
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{
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struct pthread *curthread = _get_curthread();
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lwpid_t tid;
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int error;
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if (td == curthread) {
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error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID,
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-1, cpusetsize, cpusetp);
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if (error == -1)
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error = errno;
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} else {
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THR_THREAD_LOCK(curthread, td);
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if (td->state == PS_DEAD) {
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THR_THREAD_UNLOCK(curthread, td);
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return (EINVAL);
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}
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tid = TID(td);
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error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid,
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cpusetsize, cpusetp);
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if (error == -1)
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error = errno;
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THR_THREAD_UNLOCK(curthread, td);
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}
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return (error);
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}
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int
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_pthread_getaffinity_np(pthread_t td, size_t cpusetsize, cpuset_t *cpusetp)
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{
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struct pthread *curthread = _get_curthread();
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lwpid_t tid;
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int error;
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tid = TID(td);
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error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID,
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(td == curthread) ? -1 : tid, cpusetsize, cpusetp);
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if (error == -1)
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error = errno;
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return (error);
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}
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