Rev 4262 | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 4262 | Rev 4647 | ||
---|---|---|---|
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 <fibril.h> |
40 | #include <fibril.h> |
41 | #include <string.h> |
41 | #include <string.h> |
42 | #include <async.h> |
42 | #include <async.h> |
43 | 43 | ||
44 | #ifndef THREAD_INITIAL_STACK_PAGES_NO |
44 | #ifndef THREAD_INITIAL_STACK_PAGES_NO |
45 | #define THREAD_INITIAL_STACK_PAGES_NO 1 |
45 | #define THREAD_INITIAL_STACK_PAGES_NO 1 |
46 | #endif |
46 | #endif |
47 | 47 | ||
48 | /** Main thread function. |
48 | /** Main thread function. |
49 | * |
49 | * |
50 | * This function is called from __thread_entry() and is used |
50 | * This function is called from __thread_entry() and is used |
51 | * to call the thread's implementing function and perform cleanup |
51 | * to call the thread's implementing function and perform cleanup |
52 | * and exit when thread returns back. Do not call this function |
52 | * and exit when thread returns back. Do not call this function |
53 | * directly. |
53 | * directly. |
54 | * |
54 | * |
55 | * @param uarg Pointer to userspace argument structure. |
55 | * @param uarg Pointer to userspace argument structure. |
56 | */ |
56 | */ |
57 | void __thread_main(uspace_arg_t *uarg) |
57 | void __thread_main(uspace_arg_t *uarg) |
58 | { |
58 | { |
59 | fibril_t *f; |
59 | fibril_t *f; |
60 | 60 | ||
61 | f = fibril_setup(); |
61 | f = fibril_setup(); |
62 | __tcb_set(f->tcb); |
62 | __tcb_set(f->tcb); |
63 | 63 | ||
64 | uarg->uspace_thread_function(uarg->uspace_thread_arg); |
64 | uarg->uspace_thread_function(uarg->uspace_thread_arg); |
65 | /* XXX: we cannot free the userspace stack while running on it */ |
65 | /* XXX: we cannot free the userspace stack while running on it */ |
66 | // free(uarg->uspace_stack); |
66 | // free(uarg->uspace_stack); |
67 | // free(uarg); |
67 | // free(uarg); |
68 | 68 | ||
69 | /* If there is a manager, destroy it */ |
69 | /* If there is a manager, destroy it */ |
70 | async_destroy_manager(); |
70 | async_destroy_manager(); |
71 | fibril_teardown(f); |
71 | fibril_teardown(f); |
72 | 72 | ||
73 | thread_exit(0); |
73 | thread_exit(0); |
74 | } |
74 | } |
75 | 75 | ||
76 | /** Create userspace thread. |
76 | /** Create userspace thread. |
77 | * |
77 | * |
78 | * This function creates new userspace thread and allocates userspace |
78 | * This function creates new userspace thread and allocates userspace |
79 | * stack and userspace argument structure for it. |
79 | * stack and userspace argument structure for it. |
80 | * |
80 | * |
81 | * @param function Function implementing the thread. |
81 | * @param function Function implementing the thread. |
82 | * @param arg Argument to be passed to thread. |
82 | * @param arg Argument to be passed to thread. |
83 | * @param name Symbolic name of the thread. |
83 | * @param name Symbolic name of the thread. |
84 | * @param tid Thread ID of the newly created thread. |
84 | * @param tid Thread ID of the newly created thread. |
85 | * |
85 | * |
86 | * @return Zero on success or a code from @ref errno.h on failure. |
86 | * @return Zero on success or a code from @ref errno.h on failure. |
87 | */ |
87 | */ |
88 | int thread_create(void (* function)(void *), void *arg, char *name, |
88 | int thread_create(void (* function)(void *), void *arg, char *name, |
89 | thread_id_t *tid) |
89 | thread_id_t *tid) |
90 | { |
90 | { |
91 | char *stack; |
91 | char *stack; |
92 | uspace_arg_t *uarg; |
92 | uspace_arg_t *uarg; |
93 | int rc; |
93 | int rc; |
94 | 94 | ||
95 | stack = (char *) malloc(getpagesize() * THREAD_INITIAL_STACK_PAGES_NO); |
95 | stack = (char *) malloc(getpagesize() * THREAD_INITIAL_STACK_PAGES_NO); |
96 | if (!stack) |
96 | if (!stack) |
97 | return -1; |
97 | return -1; |
98 | 98 | ||
99 | uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t)); |
99 | uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t)); |
100 | if (!uarg) { |
100 | if (!uarg) { |
101 | free(stack); |
101 | free(stack); |
102 | return -1; |
102 | return -1; |
103 | } |
103 | } |
104 | 104 | ||
105 | uarg->uspace_entry = (void *) FADDR(__thread_entry); |
105 | uarg->uspace_entry = (void *) FADDR(__thread_entry); |
106 | uarg->uspace_stack = (void *) stack; |
106 | uarg->uspace_stack = (void *) stack; |
107 | uarg->uspace_thread_function = function; |
107 | uarg->uspace_thread_function = function; |
108 | uarg->uspace_thread_arg = arg; |
108 | uarg->uspace_thread_arg = arg; |
109 | uarg->uspace_uarg = uarg; |
109 | uarg->uspace_uarg = uarg; |
110 | 110 | ||
111 | rc = __SYSCALL4(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name, |
111 | rc = __SYSCALL4(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name, |
112 | (sysarg_t) str_size(name), (sysarg_t) tid); |
112 | (sysarg_t) str_size(name), (sysarg_t) tid); |
113 | 113 | ||
114 | if (rc) { |
114 | if (rc) { |
115 | /* |
115 | /* |
116 | * Failed to create a new thread. |
116 | * Failed to create a new thread. |
117 | * Free up the allocated structures. |
117 | * Free up the allocated structures. |
118 | */ |
118 | */ |
119 | free(uarg); |
119 | free(uarg); |
120 | free(stack); |
120 | free(stack); |
121 | } |
121 | } |
122 | 122 | ||
123 | return rc; |
123 | return rc; |
124 | } |
124 | } |
125 | 125 | ||
126 | /** Terminate current thread. |
126 | /** Terminate current thread. |
127 | * |
127 | * |
128 | * @param status Exit status. Currently not used. |
128 | * @param status Exit status. Currently not used. |
129 | */ |
129 | */ |
130 | void thread_exit(int status) |
130 | void thread_exit(int status) |
131 | { |
131 | { |
132 | __SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status); |
132 | __SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status); |
133 | for (;;) |
133 | for (;;) |
134 | ; |
134 | ; |
135 | } |
135 | } |
136 | 136 | ||
137 | /** Detach thread. |
137 | /** Detach thread. |
138 | * |
138 | * |
139 | * Currently not implemented. |
139 | * Currently not implemented. |
140 | * |
140 | * |
141 | * @param thread TID. |
141 | * @param thread TID. |
142 | */ |
142 | */ |
143 | void thread_detach(thread_id_t thread) |
143 | void thread_detach(thread_id_t thread) |
144 | { |
144 | { |
145 | } |
145 | } |
146 | 146 | ||
147 | /** Join thread. |
147 | /** Join thread. |
148 | * |
148 | * |
149 | * Currently not implemented. |
149 | * Currently not implemented. |
150 | * |
150 | * |
151 | * @param thread TID. |
151 | * @param thread TID. |
152 | * |
152 | * |
153 | * @return Thread exit status. |
153 | * @return Thread exit status. |
154 | */ |
154 | */ |
155 | int thread_join(thread_id_t thread) |
155 | int thread_join(thread_id_t thread) |
156 | { |
156 | { |
157 | return 0; |
157 | return 0; |
158 | } |
158 | } |
159 | 159 | ||
160 | /** Get current thread ID. |
160 | /** Get current thread ID. |
161 | * |
161 | * |
162 | * @return Current thread ID. |
162 | * @return Current thread ID. |
163 | */ |
163 | */ |
164 | thread_id_t thread_get_id(void) |
164 | thread_id_t thread_get_id(void) |
165 | { |
165 | { |
166 | thread_id_t thread_id; |
166 | thread_id_t thread_id; |
167 | 167 | ||
168 | (void) __SYSCALL1(SYS_THREAD_GET_ID, (sysarg_t) &thread_id); |
168 | (void) __SYSCALL1(SYS_THREAD_GET_ID, (sysarg_t) &thread_id); |
169 | 169 | ||
170 | return thread_id; |
170 | return thread_id; |
171 | } |
171 | } |
172 | 172 | ||
173 | /** @} |
173 | /** @} |
174 | */ |
174 | */ |
175 | 175 |