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1 | /* |
1 | /* |
2 | * Copyright (c) 2006 Jakub Jermar |
2 | * Copyright (c) 2006 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup libc |
29 | /** @addtogroup libc |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <thread.h> |
35 | #include <thread.h> |
36 | #include <libc.h> |
36 | #include <libc.h> |
37 | #include <stdlib.h> |
37 | #include <stdlib.h> |
38 | #include <libarch/faddr.h> |
38 | #include <libarch/faddr.h> |
39 | #include <kernel/proc/uarg.h> |
39 | #include <kernel/proc/uarg.h> |
40 | #include <psthread.h> |
40 | #include <psthread.h> |
41 | #include <string.h> |
41 | #include <string.h> |
42 | #include <async.h> |
42 | #include <async.h> |
43 | 43 | ||
44 | #include <stdio.h> |
44 | #include <stdio.h> |
45 | 45 | ||
46 | 46 | ||
47 | #ifndef THREAD_INITIAL_STACK_PAGES_NO |
47 | #ifndef THREAD_INITIAL_STACK_PAGES_NO |
48 | #define THREAD_INITIAL_STACK_PAGES_NO 1 |
48 | #define THREAD_INITIAL_STACK_PAGES_NO 1 |
49 | #endif |
49 | #endif |
50 | 50 | ||
51 | static LIST_INITIALIZE(thread_garbage); |
51 | static LIST_INITIALIZE(thread_garbage); |
52 | 52 | ||
53 | extern char _tdata_start; |
53 | extern char _tdata_start; |
54 | extern char _tdata_end; |
54 | extern char _tdata_end; |
55 | extern char _tbss_start; |
55 | extern char _tbss_start; |
56 | extern char _tbss_end; |
56 | extern char _tbss_end; |
57 | 57 | ||
58 | /** Create TLS (Thread Local Storage) data structures. |
58 | /** Create TLS (Thread Local Storage) data structures. |
59 | * |
59 | * |
60 | * The code requires, that sections .tdata and .tbss are adjacent. It may be |
60 | * The code requires, that sections .tdata and .tbss are adjacent. It may be |
61 | * changed in the future. |
61 | * changed in the future. |
62 | * |
62 | * |
63 | * @return Pointer to TCB. |
63 | * @return Pointer to TCB. |
64 | */ |
64 | */ |
65 | tcb_t *__make_tls(void) |
65 | tcb_t *__make_tls(void) |
66 | { |
66 | { |
67 | void *data; |
67 | void *data; |
68 | tcb_t *tcb; |
68 | tcb_t *tcb; |
69 | size_t tls_size = &_tbss_end - &_tdata_start; |
69 | size_t tls_size = &_tbss_end - &_tdata_start; |
70 | 70 | ||
71 | tcb = __alloc_tls(&data, tls_size); |
71 | tcb = __alloc_tls(&data, tls_size); |
72 | 72 | ||
73 | /* |
73 | /* |
74 | * Copy thread local data from the initialization image. |
74 | * Copy thread local data from the initialization image. |
75 | */ |
75 | */ |
76 | memcpy(data, &_tdata_start, &_tdata_end - &_tdata_start); |
76 | memcpy(data, &_tdata_start, &_tdata_end - &_tdata_start); |
77 | /* |
77 | /* |
78 | * Zero out the thread local uninitialized data. |
78 | * Zero out the thread local uninitialized data. |
79 | */ |
79 | */ |
80 | memset(data + (&_tbss_start - &_tdata_start), 0, |
80 | memset(data + (&_tbss_start - &_tdata_start), 0, |
81 | &_tbss_end - &_tbss_start); |
81 | &_tbss_end - &_tbss_start); |
82 | 82 | ||
83 | return tcb; |
83 | return tcb; |
84 | } |
84 | } |
85 | 85 | ||
86 | void __free_tls(tcb_t *tcb) |
86 | void __free_tls(tcb_t *tcb) |
87 | { |
87 | { |
88 | size_t tls_size = &_tbss_end - &_tdata_start; |
88 | size_t tls_size = &_tbss_end - &_tdata_start; |
89 | __free_tls_arch(tcb, tls_size); |
89 | __free_tls_arch(tcb, tls_size); |
90 | } |
90 | } |
91 | 91 | ||
92 | /** Main thread function. |
92 | /** Main thread function. |
93 | * |
93 | * |
94 | * This function is called from __thread_entry() and is used |
94 | * This function is called from __thread_entry() and is used |
95 | * to call the thread's implementing function and perform cleanup |
95 | * to call the thread's implementing function and perform cleanup |
96 | * and exit when thread returns back. Do not call this function |
96 | * and exit when thread returns back. Do not call this function |
97 | * directly. |
97 | * directly. |
98 | * |
98 | * |
99 | * @param uarg Pointer to userspace argument structure. |
99 | * @param uarg Pointer to userspace argument structure. |
100 | */ |
100 | */ |
101 | void __thread_main(uspace_arg_t *uarg) |
101 | void __thread_main(uspace_arg_t *uarg) |
102 | { |
102 | { |
103 | psthread_data_t *pt; |
103 | psthread_data_t *pt; |
104 | 104 | ||
105 | pt = psthread_setup(); |
105 | pt = psthread_setup(); |
106 | __tcb_set(pt->tcb); |
106 | __tcb_set(pt->tcb); |
107 | 107 | ||
108 | uarg->uspace_thread_function(uarg->uspace_thread_arg); |
108 | uarg->uspace_thread_function(uarg->uspace_thread_arg); |
109 | /* XXX: we cannot free the userspace stack while running on it */ |
109 | /* XXX: we cannot free the userspace stack while running on it */ |
110 | free(uarg->uspace_stack); |
110 | // free(uarg->uspace_stack); |
111 | free(uarg); |
111 | // free(uarg); |
112 | 112 | ||
113 | /* If there is a manager, destroy it */ |
113 | /* If there is a manager, destroy it */ |
114 | async_destroy_manager(); |
114 | async_destroy_manager(); |
115 | psthread_teardown(pt); |
115 | psthread_teardown(pt); |
116 | 116 | ||
117 | thread_exit(0); |
117 | thread_exit(0); |
118 | } |
118 | } |
119 | 119 | ||
120 | /** Create userspace thread. |
120 | /** Create userspace thread. |
121 | * |
121 | * |
122 | * This function creates new userspace thread and allocates userspace |
122 | * This function creates new userspace thread and allocates userspace |
123 | * stack and userspace argument structure for it. |
123 | * stack and userspace argument structure for it. |
124 | * |
124 | * |
125 | * @param function Function implementing the thread. |
125 | * @param function Function implementing the thread. |
126 | * @param arg Argument to be passed to thread. |
126 | * @param arg Argument to be passed to thread. |
127 | * @param name Symbolic name of the thread. |
127 | * @param name Symbolic name of the thread. |
128 | * @param tid Thread ID of the newly created thread. |
128 | * @param tid Thread ID of the newly created thread. |
129 | * |
129 | * |
130 | * @return Zero on success or a code from @ref errno.h on failure. |
130 | * @return Zero on success or a code from @ref errno.h on failure. |
131 | */ |
131 | */ |
132 | int thread_create(void (* function)(void *), void *arg, char *name, |
132 | int thread_create(void (* function)(void *), void *arg, char *name, |
133 | thread_id_t *tid) |
133 | thread_id_t *tid) |
134 | { |
134 | { |
135 | char *stack; |
135 | char *stack; |
136 | uspace_arg_t *uarg; |
136 | uspace_arg_t *uarg; |
137 | int rc; |
137 | int rc; |
138 | 138 | ||
139 | stack = (char *) malloc(getpagesize() * THREAD_INITIAL_STACK_PAGES_NO); |
139 | stack = (char *) malloc(getpagesize() * THREAD_INITIAL_STACK_PAGES_NO); |
140 | if (!stack) |
140 | if (!stack) |
141 | return -1; |
141 | return -1; |
142 | 142 | ||
143 | uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t)); |
143 | uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t)); |
144 | if (!uarg) { |
144 | if (!uarg) { |
145 | free(stack); |
145 | free(stack); |
146 | return -1; |
146 | return -1; |
147 | } |
147 | } |
148 | 148 | ||
149 | uarg->uspace_entry = (void *) FADDR(__thread_entry); |
149 | uarg->uspace_entry = (void *) FADDR(__thread_entry); |
150 | uarg->uspace_stack = (void *) stack; |
150 | uarg->uspace_stack = (void *) stack; |
151 | uarg->uspace_thread_function = function; |
151 | uarg->uspace_thread_function = function; |
152 | uarg->uspace_thread_arg = arg; |
152 | uarg->uspace_thread_arg = arg; |
153 | uarg->uspace_uarg = uarg; |
153 | uarg->uspace_uarg = uarg; |
154 | 154 | ||
155 | rc = __SYSCALL3(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name, |
155 | rc = __SYSCALL3(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name, |
156 | (sysarg_t) tid); |
156 | (sysarg_t) tid); |
157 | 157 | ||
158 | if (rc) { |
158 | if (rc) { |
159 | /* |
159 | /* |
160 | * Failed to create a new thread. |
160 | * Failed to create a new thread. |
161 | * Free up the allocated structures. |
161 | * Free up the allocated structures. |
162 | */ |
162 | */ |
163 | free(uarg); |
163 | free(uarg); |
164 | free(stack); |
164 | free(stack); |
165 | } |
165 | } |
166 | 166 | ||
167 | return rc; |
167 | return rc; |
168 | } |
168 | } |
169 | 169 | ||
170 | /** Terminate current thread. |
170 | /** Terminate current thread. |
171 | * |
171 | * |
172 | * @param status Exit status. Currently not used. |
172 | * @param status Exit status. Currently not used. |
173 | */ |
173 | */ |
174 | void thread_exit(int status) |
174 | void thread_exit(int status) |
175 | { |
175 | { |
176 | __SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status); |
176 | __SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status); |
177 | } |
177 | } |
178 | 178 | ||
179 | /** Detach thread. |
179 | /** Detach thread. |
180 | * |
180 | * |
181 | * Currently not implemented. |
181 | * Currently not implemented. |
182 | * |
182 | * |
183 | * @param thread TID. |
183 | * @param thread TID. |
184 | */ |
184 | */ |
185 | void thread_detach(thread_id_t thread) |
185 | void thread_detach(thread_id_t thread) |
186 | { |
186 | { |
187 | } |
187 | } |
188 | 188 | ||
189 | /** Join thread. |
189 | /** Join thread. |
190 | * |
190 | * |
191 | * Currently not implemented. |
191 | * Currently not implemented. |
192 | * |
192 | * |
193 | * @param thread TID. |
193 | * @param thread TID. |
194 | * |
194 | * |
195 | * @return Thread exit status. |
195 | * @return Thread exit status. |
196 | */ |
196 | */ |
197 | int thread_join(thread_id_t thread) |
197 | int thread_join(thread_id_t thread) |
198 | { |
198 | { |
199 | } |
199 | } |
200 | 200 | ||
201 | /** Get current thread ID. |
201 | /** Get current thread ID. |
202 | * |
202 | * |
203 | * @return Current thread ID. |
203 | * @return Current thread ID. |
204 | */ |
204 | */ |
205 | thread_id_t thread_get_id(void) |
205 | thread_id_t thread_get_id(void) |
206 | { |
206 | { |
207 | thread_id_t thread_id; |
207 | thread_id_t thread_id; |
208 | 208 | ||
209 | (void) __SYSCALL1(SYS_THREAD_GET_ID, (sysarg_t) &thread_id); |
209 | (void) __SYSCALL1(SYS_THREAD_GET_ID, (sysarg_t) &thread_id); |
210 | 210 | ||
211 | return thread_id; |
211 | return thread_id; |
212 | } |
212 | } |
213 | 213 | ||
214 | /** @} |
214 | /** @} |
215 | */ |
215 | */ |
216 | 216 |