1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 "namespace.h" 30 #include <pthread_np.h> 31 #include <sys/param.h> 32 #include <sys/cpuset.h> 33 #include "un-namespace.h" 34 35 #include "thr_private.h" 36 37 __weak_reference(_pthread_getaffinity_np, pthread_getaffinity_np); 38 __weak_reference(_pthread_setaffinity_np, pthread_setaffinity_np); 39 40 int 41 _pthread_setaffinity_np(pthread_t td, size_t cpusetsize, const cpuset_t *cpusetp) 42 { 43 struct pthread *curthread = _get_curthread(); 44 lwpid_t tid; 45 int error; 46 47 if (td == curthread) { 48 error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, 49 -1, cpusetsize, cpusetp); 50 if (error == -1) 51 error = errno; 52 } else if ((error = _thr_find_thread(curthread, td, 0)) == 0) { 53 tid = TID(td); 54 error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid, 55 cpusetsize, cpusetp); 56 if (error == -1) 57 error = errno; 58 THR_THREAD_UNLOCK(curthread, td); 59 } 60 return (error); 61 } 62 63 int 64 _pthread_getaffinity_np(pthread_t td, size_t cpusetsize, cpuset_t *cpusetp) 65 { 66 struct pthread *curthread = _get_curthread(); 67 lwpid_t tid; 68 int error; 69 70 if (td == curthread) { 71 error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, 72 -1, cpusetsize, cpusetp); 73 if (error == -1) 74 error = errno; 75 } else if ((error = _thr_find_thread(curthread, td, 0)) == 0) { 76 tid = TID(td); 77 error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid, 78 cpusetsize, cpusetp); 79 if (error == -1) 80 error = errno; 81 THR_THREAD_UNLOCK(curthread, td); 82 } 83 return (error); 84 } 85