1 /* $NetBSD: pthread_misc.c,v 1.17 2020/01/29 16:34:09 kamil 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 1.17 2020/01/29 16:34:09 kamil Exp $"); 34 35 #include <errno.h> 36 #include <string.h> 37 #include <unistd.h> 38 39 #include <sys/types.h> 40 #include <sys/pset.h> 41 #include <sys/signal.h> 42 #include <sys/time.h> 43 44 #include <lwp.h> 45 #include <sched.h> 46 47 #include "pthread.h" 48 #include "pthread_int.h" 49 #include "reentrant.h" 50 51 int pthread__sched_yield(void); 52 53 int _sys___sigprocmask14(int, const sigset_t *, sigset_t *); 54 int _sys_sched_yield(void); 55 56 __strong_alias(__libc_thr_sigsetmask,pthread_sigmask) 57 __strong_alias(__sigprocmask14,pthread_sigmask) 58 __strong_alias(__libc_thr_yield,pthread__sched_yield) 59 60 int 61 pthread_getschedparam(pthread_t thread, int *policy, struct sched_param *param) 62 { 63 64 pthread__error(EINVAL, "Invalid thread", 65 thread->pt_magic == PT_MAGIC); 66 67 if (pthread__find(thread) != 0) 68 return ESRCH; 69 70 if (_sched_getparam(getpid(), thread->pt_lid, policy, param) < 0) 71 return errno; 72 73 return 0; 74 } 75 76 int 77 pthread_setschedparam(pthread_t thread, int policy, 78 const struct sched_param *param) 79 { 80 struct sched_param sp; 81 82 pthread__error(EINVAL, "Invalid thread", 83 thread->pt_magic == PT_MAGIC); 84 85 if (pthread__find(thread) != 0) 86 return ESRCH; 87 88 memcpy(&sp, param, sizeof(struct sched_param)); 89 if (_sched_setparam(getpid(), thread->pt_lid, policy, &sp) < 0) 90 return errno; 91 92 return 0; 93 } 94 95 int 96 pthread_getaffinity_np(pthread_t thread, size_t size, cpuset_t *cpuset) 97 { 98 99 pthread__error(EINVAL, "Invalid thread", 100 thread->pt_magic == PT_MAGIC); 101 102 if (pthread__find(thread) != 0) 103 return ESRCH; 104 105 if (_sched_getaffinity(getpid(), thread->pt_lid, size, cpuset) < 0) 106 return errno; 107 108 return 0; 109 } 110 111 int 112 pthread_setaffinity_np(pthread_t thread, size_t size, cpuset_t *cpuset) 113 { 114 115 pthread__error(EINVAL, "Invalid thread", 116 thread->pt_magic == PT_MAGIC); 117 118 if (pthread__find(thread) != 0) 119 return ESRCH; 120 121 if (_sched_setaffinity(getpid(), thread->pt_lid, size, cpuset) < 0) 122 return errno; 123 124 return 0; 125 } 126 127 int 128 pthread_setschedprio(pthread_t thread, int prio) 129 { 130 struct sched_param sp; 131 132 pthread__error(EINVAL, "Invalid thread", 133 thread->pt_magic == PT_MAGIC); 134 135 if (pthread__find(thread) != 0) 136 return ESRCH; 137 138 sp.sched_priority = prio; 139 if (_sched_setparam(getpid(), thread->pt_lid, SCHED_NONE, &sp) < 0) 140 return errno; 141 142 return 0; 143 } 144 145 int 146 pthread_kill(pthread_t thread, int sig) 147 { 148 149 pthread__error(EINVAL, "Invalid thread", 150 thread->pt_magic == PT_MAGIC); 151 152 if ((sig < 0) || (sig >= _NSIG)) 153 return EINVAL; 154 if (pthread__find(thread) != 0) 155 return ESRCH; 156 if (_lwp_kill(thread->pt_lid, sig)) 157 return errno; 158 return 0; 159 } 160 161 int 162 pthread_sigmask(int how, const sigset_t *set, sigset_t *oset) 163 { 164 if (_sys___sigprocmask14(how, set, oset)) 165 return errno; 166 return 0; 167 } 168 169 int 170 pthread__sched_yield(void) 171 { 172 173 if (__predict_false(__uselibcstub)) 174 return __libc_thr_yield(); 175 176 return _sys_sched_yield(); 177 } 178