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