1 /* 2 * Copyright (c) 2008, David Xu <davidxu@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 * 28 */ 29 30 #include "namespace.h" 31 #include <pthread_np.h> 32 #include <sys/param.h> 33 #include <sys/cpuset.h> 34 #include "un-namespace.h" 35 36 #include "thr_private.h" 37 38 __weak_reference(_pthread_getaffinity_np, pthread_getaffinity_np); 39 __weak_reference(_pthread_setaffinity_np, pthread_setaffinity_np); 40 41 int 42 _pthread_setaffinity_np(pthread_t td, size_t cpusetsize, const cpuset_t *cpusetp) 43 { 44 struct pthread *curthread = _get_curthread(); 45 lwpid_t tid; 46 int error; 47 48 if (td == curthread) { 49 error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, 50 -1, cpusetsize, cpusetp); 51 if (error == -1) 52 error = errno; 53 } else { 54 THR_THREAD_LOCK(curthread, td); 55 if (td->state == PS_DEAD) { 56 THR_THREAD_UNLOCK(curthread, td); 57 return (EINVAL); 58 } 59 tid = TID(td); 60 error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid, 61 cpusetsize, cpusetp); 62 if (error == -1) 63 error = errno; 64 THR_THREAD_UNLOCK(curthread, td); 65 } 66 return (error); 67 } 68 69 int 70 _pthread_getaffinity_np(pthread_t td, size_t cpusetsize, cpuset_t *cpusetp) 71 { 72 struct pthread *curthread = _get_curthread(); 73 lwpid_t tid; 74 int error; 75 76 tid = TID(td); 77 error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, 78 (td == curthread) ? -1 : tid, cpusetsize, cpusetp); 79 if (error == -1) 80 error = errno; 81 return (error); 82 } 83