1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <pthread.h> 33 #include <stdint.h> 34 #include <stdlib.h> 35 36 #include "threads.h" 37 38 struct thrd_param { 39 thrd_start_t func; 40 void *arg; 41 }; 42 43 static void * 44 thrd_entry(void *arg) 45 { 46 struct thrd_param tp; 47 48 tp = *(struct thrd_param *)arg; 49 free(arg); 50 return ((void *)(intptr_t)tp.func(tp.arg)); 51 } 52 53 int 54 thrd_create(thrd_t *thr, thrd_start_t func, void *arg) 55 { 56 struct thrd_param *tp; 57 58 /* 59 * Work around return type inconsistency. Wrap execution using 60 * a function conforming to pthread_create()'s start_routine. 61 */ 62 tp = malloc(sizeof(*tp)); 63 if (tp == NULL) 64 return (thrd_nomem); 65 tp->func = func; 66 tp->arg = arg; 67 if (pthread_create(thr, NULL, thrd_entry, tp) != 0) { 68 free(tp); 69 return (thrd_error); 70 } 71 return (thrd_success); 72 } 73 74 thrd_t 75 thrd_current(void) 76 { 77 78 return (pthread_self()); 79 } 80 81 int 82 thrd_detach(thrd_t thr) 83 { 84 85 if (pthread_detach(thr) != 0) 86 return (thrd_error); 87 return (thrd_success); 88 } 89 90 int 91 thrd_equal(thrd_t thr0, thrd_t thr1) 92 { 93 94 return (pthread_equal(thr0, thr1)); 95 } 96 97 _Noreturn void 98 thrd_exit(int res) 99 { 100 101 pthread_exit((void *)(intptr_t)res); 102 } 103 104 int 105 thrd_join(thrd_t thr, int *res) 106 { 107 void *value_ptr; 108 109 if (pthread_join(thr, &value_ptr) != 0) 110 return (thrd_error); 111 if (res != NULL) 112 *res = (intptr_t)value_ptr; 113 return (thrd_success); 114 } 115 116 int 117 thrd_sleep(const struct timespec *duration, struct timespec *remaining) 118 { 119 120 return (nanosleep(duration, remaining)); 121 } 122 123 void 124 thrd_yield(void) 125 { 126 127 pthread_yield(); 128 } 129