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 if ((error = _thr_find_thread(curthread, td, 0)) == 0) { 54 tid = TID(td); 55 error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid, 56 cpusetsize, cpusetp); 57 if (error == -1) 58 error = errno; 59 THR_THREAD_UNLOCK(curthread, td); 60 } 61 return (error); 62 } 63 64 int 65 _pthread_getaffinity_np(pthread_t td, size_t cpusetsize, cpuset_t *cpusetp) 66 { 67 struct pthread *curthread = _get_curthread(); 68 lwpid_t tid; 69 int error; 70 71 if (td == curthread) { 72 error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, 73 -1, cpusetsize, cpusetp); 74 if (error == -1) 75 error = errno; 76 } else if ((error = _thr_find_thread(curthread, td, 0)) == 0) { 77 tid = TID(td); 78 error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid, 79 cpusetsize, cpusetp); 80 if (error == -1) 81 error = errno; 82 THR_THREAD_UNLOCK(curthread, td); 83 } 84 return (error); 85 } 86