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Rev | Author | Line No. | Line |
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447 | decky | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2006 Jakub Jermar |
447 | decky | 3 | * All rights reserved. |
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 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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1653 | cejka | 27 | */ |
28 | |||
1781 | jermar | 29 | /** @addtogroup libc |
1653 | cejka | 30 | * @{ |
31 | */ |
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32 | /** @file |
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447 | decky | 33 | */ |
34 | |||
1065 | jermar | 35 | #include <thread.h> |
447 | decky | 36 | #include <libc.h> |
1079 | jermar | 37 | #include <stdlib.h> |
1781 | jermar | 38 | #include <libarch/faddr.h> |
1079 | jermar | 39 | #include <kernel/proc/uarg.h> |
2482 | jermar | 40 | #include <fibril.h> |
1129 | palkovsky | 41 | #include <string.h> |
1392 | palkovsky | 42 | #include <async.h> |
447 | decky | 43 | |
1167 | vana | 44 | #ifndef THREAD_INITIAL_STACK_PAGES_NO |
45 | #define THREAD_INITIAL_STACK_PAGES_NO 1 |
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46 | #endif |
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47 | |||
1081 | jermar | 48 | /** Main thread function. |
49 | * |
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50 | * This function is called from __thread_entry() and is used |
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51 | * to call the thread's implementing function and perform cleanup |
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52 | * and exit when thread returns back. Do not call this function |
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53 | * directly. |
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54 | * |
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55 | * @param uarg Pointer to userspace argument structure. |
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56 | */ |
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1113 | palkovsky | 57 | void __thread_main(uspace_arg_t *uarg) |
1079 | jermar | 58 | { |
2482 | jermar | 59 | fibril_t *f; |
1113 | palkovsky | 60 | |
2482 | jermar | 61 | f = fibril_setup(); |
62 | __tcb_set(f->tcb); |
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2568 | jermar | 63 | |
1079 | jermar | 64 | uarg->uspace_thread_function(uarg->uspace_thread_arg); |
2469 | jermar | 65 | /* XXX: we cannot free the userspace stack while running on it */ |
2470 | jermar | 66 | // free(uarg->uspace_stack); |
67 | // free(uarg); |
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1113 | palkovsky | 68 | |
1407 | palkovsky | 69 | /* If there is a manager, destroy it */ |
1392 | palkovsky | 70 | async_destroy_manager(); |
2482 | jermar | 71 | fibril_teardown(f); |
1113 | palkovsky | 72 | |
1079 | jermar | 73 | thread_exit(0); |
74 | } |
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1065 | jermar | 75 | |
1081 | jermar | 76 | /** Create userspace thread. |
77 | * |
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78 | * This function creates new userspace thread and allocates userspace |
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79 | * stack and userspace argument structure for it. |
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80 | * |
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81 | * @param function Function implementing the thread. |
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82 | * @param arg Argument to be passed to thread. |
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83 | * @param name Symbolic name of the thread. |
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2216 | decky | 84 | * @param tid Thread ID of the newly created thread. |
1081 | jermar | 85 | * |
2216 | decky | 86 | * @return Zero on success or a code from @ref errno.h on failure. |
1081 | jermar | 87 | */ |
2436 | jermar | 88 | int thread_create(void (* function)(void *), void *arg, char *name, |
89 | thread_id_t *tid) |
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1065 | jermar | 90 | { |
1079 | jermar | 91 | char *stack; |
92 | uspace_arg_t *uarg; |
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2436 | jermar | 93 | int rc; |
1079 | jermar | 94 | |
2061 | jermar | 95 | stack = (char *) malloc(getpagesize() * THREAD_INITIAL_STACK_PAGES_NO); |
1079 | jermar | 96 | if (!stack) |
97 | return -1; |
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98 | |||
99 | uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t)); |
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100 | if (!uarg) { |
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101 | free(stack); |
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102 | return -1; |
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103 | } |
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1081 | jermar | 104 | |
1079 | jermar | 105 | uarg->uspace_entry = (void *) FADDR(__thread_entry); |
106 | uarg->uspace_stack = (void *) stack; |
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1081 | jermar | 107 | uarg->uspace_thread_function = function; |
1079 | jermar | 108 | uarg->uspace_thread_arg = arg; |
109 | uarg->uspace_uarg = uarg; |
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110 | |||
3565 | svoboda | 111 | rc = __SYSCALL4(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name, |
4256 | svoboda | 112 | (sysarg_t) str_size(name), (sysarg_t) tid); |
2436 | jermar | 113 | |
2469 | jermar | 114 | if (rc) { |
2436 | jermar | 115 | /* |
116 | * Failed to create a new thread. |
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117 | * Free up the allocated structures. |
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118 | */ |
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119 | free(uarg); |
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120 | free(stack); |
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121 | } |
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122 | |||
123 | return rc; |
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713 | decky | 124 | } |
125 | |||
1081 | jermar | 126 | /** Terminate current thread. |
127 | * |
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1709 | jermar | 128 | * @param status Exit status. Currently not used. |
1081 | jermar | 129 | */ |
1065 | jermar | 130 | void thread_exit(int status) |
131 | { |
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132 | __SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status); |
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4262 | jermar | 133 | for (;;) |
134 | ; |
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447 | decky | 135 | } |
1427 | palkovsky | 136 | |
2188 | decky | 137 | /** Detach thread. |
138 | * |
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139 | * Currently not implemented. |
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140 | * |
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141 | * @param thread TID. |
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142 | */ |
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2216 | decky | 143 | void thread_detach(thread_id_t thread) |
2188 | decky | 144 | { |
145 | } |
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146 | |||
147 | /** Join thread. |
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148 | * |
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149 | * Currently not implemented. |
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150 | * |
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151 | * @param thread TID. |
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152 | * |
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153 | * @return Thread exit status. |
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154 | */ |
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2216 | decky | 155 | int thread_join(thread_id_t thread) |
2188 | decky | 156 | { |
4262 | jermar | 157 | return 0; |
2188 | decky | 158 | } |
159 | |||
160 | /** Get current thread ID. |
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161 | * |
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162 | * @return Current thread ID. |
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163 | */ |
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2216 | decky | 164 | thread_id_t thread_get_id(void) |
2188 | decky | 165 | { |
2216 | decky | 166 | thread_id_t thread_id; |
167 | |||
168 | (void) __SYSCALL1(SYS_THREAD_GET_ID, (sysarg_t) &thread_id); |
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169 | |||
170 | return thread_id; |
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2188 | decky | 171 | } |
172 | |||
1781 | jermar | 173 | /** @} |
1653 | cejka | 174 | */ |