1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2008, David Xu <davidxu@freebsd.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include "namespace.h" 33 #include <pthread_np.h> 34 #include <sys/param.h> 35 #include <sys/cpuset.h> 36 #include "un-namespace.h" 37 38 #include "thr_private.h" 39 40 __weak_reference(_pthread_getaffinity_np, pthread_getaffinity_np); 41 __weak_reference(_pthread_setaffinity_np, pthread_setaffinity_np); 42 43 int 44 _pthread_setaffinity_np(pthread_t td, size_t cpusetsize, const cpuset_t *cpusetp) 45 { 46 struct pthread *curthread = _get_curthread(); 47 lwpid_t tid; 48 int error; 49 50 if (td == curthread) { 51 error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, 52 -1, cpusetsize, cpusetp); 53 if (error == -1) 54 error = errno; 55 } else if ((error = _thr_find_thread(curthread, td, 0)) == 0) { 56 tid = TID(td); 57 error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid, 58 cpusetsize, cpusetp); 59 if (error == -1) 60 error = errno; 61 THR_THREAD_UNLOCK(curthread, td); 62 } 63 return (error); 64 } 65 66 int 67 _pthread_getaffinity_np(pthread_t td, size_t cpusetsize, cpuset_t *cpusetp) 68 { 69 struct pthread *curthread = _get_curthread(); 70 lwpid_t tid; 71 int error; 72 73 if (td == curthread) { 74 error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, 75 -1, cpusetsize, cpusetp); 76 if (error == -1) 77 error = errno; 78 } else if ((error = _thr_find_thread(curthread, td, 0)) == 0) { 79 tid = TID(td); 80 error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid, 81 cpusetsize, cpusetp); 82 if (error == -1) 83 error = errno; 84 THR_THREAD_UNLOCK(curthread, td); 85 } 86 return (error); 87 } 88