1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2011 Ed Schouten <ed@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, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include <threads.h> 32 33 #include <pthread.h> 34 #include <stdint.h> 35 #include <stdlib.h> 36 37 #include <errno.h> 38 39 struct thrd_param { 40 thrd_start_t func; 41 void *arg; 42 }; 43 44 static void * 45 thrd_entry(void *arg) 46 { 47 struct thrd_param tp; 48 49 tp = *(struct thrd_param *)arg; 50 free(arg); 51 return ((void *)(intptr_t)tp.func(tp.arg)); 52 } 53 54 int 55 thrd_create(thrd_t *thr, thrd_start_t func, void *arg) 56 { 57 struct thrd_param *tp; 58 59 /* 60 * Work around return type inconsistency. Wrap execution using 61 * a function conforming to pthread_create()'s start_routine. 62 */ 63 tp = malloc(sizeof(*tp)); 64 if (tp == NULL) 65 return (thrd_nomem); 66 tp->func = func; 67 tp->arg = arg; 68 if (pthread_create(thr, NULL, thrd_entry, tp) != 0) { 69 free(tp); 70 return (thrd_error); 71 } 72 return (thrd_success); 73 } 74 75 thrd_t 76 thrd_current(void) 77 { 78 79 return (pthread_self()); 80 } 81 82 int 83 thrd_detach(thrd_t thr) 84 { 85 86 if (pthread_detach(thr) != 0) 87 return (thrd_error); 88 return (thrd_success); 89 } 90 91 int 92 thrd_equal(thrd_t thr0, thrd_t thr1) 93 { 94 95 return (pthread_equal(thr0, thr1)); 96 } 97 98 _Noreturn void 99 thrd_exit(int res) 100 { 101 102 pthread_exit((void *)(intptr_t)res); 103 } 104 105 int 106 thrd_join(thrd_t thr, int *res) 107 { 108 void *value_ptr; 109 110 if (pthread_join(thr, &value_ptr) != 0) 111 return (thrd_error); 112 if (res != NULL) 113 *res = (intptr_t)value_ptr; 114 return (thrd_success); 115 } 116 117 int 118 thrd_sleep(const struct timespec *duration, struct timespec *remaining) 119 { 120 121 return (nanosleep(duration, remaining)); 122 } 123 124 void 125 thrd_yield(void) 126 { 127 128 sched_yield(); 129 } 130