1 /* $NetBSD: pthread_misc.c,v 1.19 2022/04/10 10:38:33 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2001, 2006, 2007, 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Nathan J. Williams. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __RCSID("$NetBSD: pthread_misc.c,v 1.19 2022/04/10 10:38:33 riastradh Exp $"); 34 35 /* Need to use libc-private names for atomic operations. */ 36 #include "../../common/lib/libc/atomic/atomic_op_namespace.h" 37 38 #include <errno.h> 39 #include <string.h> 40 #include <unistd.h> 41 42 #include <sys/types.h> 43 #include <sys/pset.h> 44 #include <sys/signal.h> 45 #include <sys/time.h> 46 47 #include <lwp.h> 48 #include <sched.h> 49 50 #include "pthread.h" 51 #include "pthread_int.h" 52 #include "reentrant.h" 53 54 int pthread__sched_yield(void); 55 56 int _sys___sigprocmask14(int, const sigset_t *, sigset_t *); 57 int _sys_sched_yield(void); 58 59 __strong_alias(__libc_thr_sigsetmask,pthread_sigmask) 60 __strong_alias(__sigprocmask14,pthread_sigmask) 61 __strong_alias(__libc_thr_yield,pthread__sched_yield) 62 63 int 64 pthread_getschedparam(pthread_t thread, int *policy, struct sched_param *param) 65 { 66 67 pthread__error(EINVAL, "Invalid thread", 68 thread->pt_magic == PT_MAGIC); 69 70 if (pthread__find(thread) != 0) 71 return ESRCH; 72 73 if (_sched_getparam(getpid(), thread->pt_lid, policy, param) < 0) 74 return errno; 75 76 return 0; 77 } 78 79 int 80 pthread_setschedparam(pthread_t thread, int policy, 81 const struct sched_param *param) 82 { 83 struct sched_param sp; 84 85 pthread__error(EINVAL, "Invalid thread", 86 thread->pt_magic == PT_MAGIC); 87 88 if (pthread__find(thread) != 0) 89 return ESRCH; 90 91 memcpy(&sp, param, sizeof(struct sched_param)); 92 if (_sched_setparam(getpid(), thread->pt_lid, policy, &sp) < 0) 93 return errno; 94 95 return 0; 96 } 97 98 int 99 pthread_getaffinity_np(pthread_t thread, size_t size, cpuset_t *cpuset) 100 { 101 102 pthread__error(EINVAL, "Invalid thread", 103 thread->pt_magic == PT_MAGIC); 104 105 if (pthread__find(thread) != 0) 106 return ESRCH; 107 108 if (_sched_getaffinity(getpid(), thread->pt_lid, size, cpuset) < 0) 109 return errno; 110 111 return 0; 112 } 113 114 int 115 pthread_setaffinity_np(pthread_t thread, size_t size, cpuset_t *cpuset) 116 { 117 118 pthread__error(EINVAL, "Invalid thread", 119 thread->pt_magic == PT_MAGIC); 120 121 if (pthread__find(thread) != 0) 122 return ESRCH; 123 124 if (_sched_setaffinity(getpid(), thread->pt_lid, size, cpuset) < 0) 125 return errno; 126 127 return 0; 128 } 129 130 int 131 pthread_setschedprio(pthread_t thread, int prio) 132 { 133 struct sched_param sp; 134 135 pthread__error(EINVAL, "Invalid thread", 136 thread->pt_magic == PT_MAGIC); 137 138 if (pthread__find(thread) != 0) 139 return ESRCH; 140 141 sp.sched_priority = prio; 142 if (_sched_setparam(getpid(), thread->pt_lid, SCHED_NONE, &sp) < 0) 143 return errno; 144 145 return 0; 146 } 147 148 int 149 pthread_kill(pthread_t thread, int sig) 150 { 151 152 pthread__error(EINVAL, "Invalid thread", 153 thread->pt_magic == PT_MAGIC); 154 155 if ((sig < 0) || (sig >= _NSIG)) 156 return EINVAL; 157 if (pthread__find(thread) != 0) 158 return ESRCH; 159 if (_lwp_kill(thread->pt_lid, sig)) 160 return errno; 161 return 0; 162 } 163 164 int 165 pthread_sigmask(int how, const sigset_t *set, sigset_t *oset) 166 { 167 if (_sys___sigprocmask14(how, set, oset)) 168 return errno; 169 return 0; 170 } 171 172 int 173 pthread__sched_yield(void) 174 { 175 176 if (__predict_false(__uselibcstub)) 177 return __libc_thr_yield(); 178 179 return _sys_sched_yield(); 180 } 181