1 | /*- |
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2 | * Copyright (c) 2011 Ed Schouten <ed@FreeBSD.org> |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * 1. Redistributions of source code must retain the above copyright |
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9 | * notice, this list of conditions and the following disclaimer. |
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10 | * 2. Redistributions in binary form must reproduce the above copyright |
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11 | * notice, this list of conditions and the following disclaimer in the |
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12 | * documentation and/or other materials provided with the distribution. |
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13 | * |
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14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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24 | * SUCH DAMAGE. |
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25 | * |
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26 | * $FreeBSD r279318 2015-02-26T09:42:03Z$ |
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27 | */ |
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28 | |
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29 | #include <threads.h> |
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30 | #include <pthread.h> |
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31 | #include <sched.h> |
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32 | #include <stdint.h> |
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33 | #include <stdlib.h> |
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34 | |
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35 | struct thrd_param { |
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36 | thrd_start_t func; |
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37 | void *arg; |
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38 | }; |
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39 | |
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40 | static void * |
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41 | thrd_entry(void *arg) |
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42 | { |
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43 | struct thrd_param tp; |
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44 | |
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45 | tp = *(struct thrd_param *)arg; |
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46 | free(arg); |
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47 | return ((void *)(intptr_t)tp.func(tp.arg)); |
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48 | } |
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49 | |
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50 | int |
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51 | thrd_create(thrd_t *thr, thrd_start_t func, void *arg) |
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52 | { |
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53 | struct thrd_param *tp; |
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54 | |
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55 | /* |
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56 | * Work around return type inconsistency. Wrap execution using |
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57 | * a function conforming to pthread_create()'s start_routine. |
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58 | */ |
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59 | tp = malloc(sizeof(*tp)); |
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60 | if (tp == NULL) |
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61 | return (thrd_nomem); |
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62 | tp->func = func; |
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63 | tp->arg = arg; |
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64 | if (pthread_create(thr, NULL, thrd_entry, tp) != 0) { |
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65 | free(tp); |
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66 | return (thrd_error); |
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67 | } |
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68 | return (thrd_success); |
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69 | } |
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70 | |
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71 | thrd_t |
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72 | thrd_current(void) |
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73 | { |
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74 | |
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75 | return (pthread_self()); |
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76 | } |
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77 | |
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78 | int |
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79 | thrd_detach(thrd_t thr) |
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80 | { |
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81 | |
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82 | if (pthread_detach(thr) != 0) |
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83 | return (thrd_error); |
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84 | return (thrd_success); |
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85 | } |
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86 | |
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87 | int |
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88 | thrd_equal(thrd_t thr0, thrd_t thr1) |
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89 | { |
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90 | |
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91 | return (pthread_equal(thr0, thr1)); |
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92 | } |
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93 | |
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94 | _Noreturn void |
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95 | thrd_exit(int res) |
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96 | { |
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97 | |
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98 | pthread_exit((void *)(intptr_t)res); |
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99 | } |
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100 | |
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101 | int |
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102 | thrd_join(thrd_t thr, int *res) |
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103 | { |
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104 | void *value_ptr; |
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105 | |
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106 | if (pthread_join(thr, &value_ptr) != 0) |
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107 | return (thrd_error); |
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108 | if (res != NULL) |
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109 | *res = (intptr_t)value_ptr; |
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110 | return (thrd_success); |
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111 | } |
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112 | |
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113 | int |
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114 | thrd_sleep(const struct timespec *duration, struct timespec *remaining) |
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115 | { |
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116 | |
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117 | return (nanosleep(duration, remaining)); |
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118 | } |
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119 | |
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120 | void |
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121 | thrd_yield(void) |
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122 | { |
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123 | |
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124 | sched_yield(); |
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125 | } |
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