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 <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <pthread.h> 35 #include <stdint.h> 36 #include <stdlib.h> 37 38 #include "threads.h" 39 40 struct thrd_param { 41 thrd_start_t func; 42 void *arg; 43 }; 44 45 static void * 46 thrd_entry(void *arg) 47 { 48 struct thrd_param tp; 49 50 tp = *(struct thrd_param *)arg; 51 free(arg); 52 return ((void *)(intptr_t)tp.func(tp.arg)); 53 } 54 55 int 56 thrd_create(thrd_t *thr, thrd_start_t func, void *arg) 57 { 58 struct thrd_param *tp; 59 60 /* 61 * Work around return type inconsistency. Wrap execution using 62 * a function conforming to pthread_create()'s start_routine. 63 */ 64 tp = malloc(sizeof(*tp)); 65 if (tp == NULL) 66 return (thrd_nomem); 67 tp->func = func; 68 tp->arg = arg; 69 if (pthread_create(thr, NULL, thrd_entry, tp) != 0) { 70 free(tp); 71 return (thrd_error); 72 } 73 return (thrd_success); 74 } 75 76 thrd_t 77 thrd_current(void) 78 { 79 80 return (pthread_self()); 81 } 82 83 int 84 thrd_detach(thrd_t thr) 85 { 86 87 if (pthread_detach(thr) != 0) 88 return (thrd_error); 89 return (thrd_success); 90 } 91 92 int 93 thrd_equal(thrd_t thr0, thrd_t thr1) 94 { 95 96 return (pthread_equal(thr0, thr1)); 97 } 98 99 _Noreturn void 100 thrd_exit(int res) 101 { 102 103 pthread_exit((void *)(intptr_t)res); 104 } 105 106 int 107 thrd_join(thrd_t thr, int *res) 108 { 109 void *value_ptr; 110 111 if (pthread_join(thr, &value_ptr) != 0) 112 return (thrd_error); 113 if (res != NULL) 114 *res = (intptr_t)value_ptr; 115 return (thrd_success); 116 } 117 118 int 119 thrd_sleep(const struct timespec *duration, struct timespec *remaining) 120 { 121 122 return (nanosleep(duration, remaining)); 123 } 124 125 void 126 thrd_yield(void) 127 { 128 129 pthread_yield(); 130 } 131