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1 | /* |
1 | /* |
2 | * Copyright (c) 2006 Ondrej Palkovsky |
2 | * Copyright (c) 2006 Ondrej Palkovsky |
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 | /** |
35 | /** |
36 | * Asynchronous library |
36 | * Asynchronous library |
37 | * |
37 | * |
38 | * The aim of this library is facilitating writing programs utilizing the |
38 | * The aim of this library is facilitating writing programs utilizing the |
39 | * asynchronous nature of HelenOS IPC, yet using a normal way of programming. |
39 | * asynchronous nature of HelenOS IPC, yet using a normal way of programming. |
40 | * |
40 | * |
41 | * You should be able to write very simple multithreaded programs, the async |
41 | * You should be able to write very simple multithreaded programs, the async |
42 | * framework will automatically take care of most synchronization problems. |
42 | * framework will automatically take care of most synchronization problems. |
43 | * |
43 | * |
44 | * Default semantics: |
44 | * Default semantics: |
45 | * - async_send_*(): send asynchronously. If the kernel refuses to send |
45 | * - async_send_*(): send asynchronously. If the kernel refuses to send |
46 | * more messages, [ try to get responses from kernel, if |
46 | * more messages, [ try to get responses from kernel, if |
47 | * nothing found, might try synchronous ] |
47 | * nothing found, might try synchronous ] |
48 | * |
48 | * |
49 | * Example of use (pseudo C): |
49 | * Example of use (pseudo C): |
50 | * |
50 | * |
51 | * 1) Multithreaded client application |
51 | * 1) Multithreaded client application |
52 | * |
52 | * |
53 | * fibril_create(fibril1, ...); |
53 | * fibril_create(fibril1, ...); |
54 | * fibril_create(fibril2, ...); |
54 | * fibril_create(fibril2, ...); |
55 | * ... |
55 | * ... |
56 | * |
56 | * |
57 | * int fibril1(void *arg) |
57 | * int fibril1(void *arg) |
58 | * { |
58 | * { |
59 | * conn = ipc_connect_me_to(); |
59 | * conn = ipc_connect_me_to(); |
60 | * c1 = async_send(conn); |
60 | * c1 = async_send(conn); |
61 | * c2 = async_send(conn); |
61 | * c2 = async_send(conn); |
62 | * async_wait_for(c1); |
62 | * async_wait_for(c1); |
63 | * async_wait_for(c2); |
63 | * async_wait_for(c2); |
64 | * ... |
64 | * ... |
65 | * } |
65 | * } |
66 | * |
66 | * |
67 | * |
67 | * |
68 | * 2) Multithreaded server application |
68 | * 2) Multithreaded server application |
69 | * main() |
69 | * main() |
70 | * { |
70 | * { |
71 | * async_manager(); |
71 | * async_manager(); |
72 | * } |
72 | * } |
73 | * |
73 | * |
74 | * |
74 | * |
75 | * my_client_connection(icallid, *icall) |
75 | * my_client_connection(icallid, *icall) |
76 | * { |
76 | * { |
77 | * if (want_refuse) { |
77 | * if (want_refuse) { |
78 | * ipc_answer_0(icallid, ELIMIT); |
78 | * ipc_answer_0(icallid, ELIMIT); |
79 | * return; |
79 | * return; |
80 | * } |
80 | * } |
81 | * ipc_answer_0(icallid, EOK); |
81 | * ipc_answer_0(icallid, EOK); |
82 | * |
82 | * |
83 | * callid = async_get_call(&call); |
83 | * callid = async_get_call(&call); |
84 | * handle_call(callid, call); |
84 | * handle_call(callid, call); |
85 | * ipc_answer_2(callid, 1, 2, 3); |
85 | * ipc_answer_2(callid, 1, 2, 3); |
86 | * |
86 | * |
87 | * callid = async_get_call(&call); |
87 | * callid = async_get_call(&call); |
88 | * .... |
88 | * .... |
89 | * } |
89 | * } |
90 | * |
90 | * |
91 | */ |
91 | */ |
92 | 92 | ||
93 | #include <futex.h> |
93 | #include <futex.h> |
94 | #include <async.h> |
94 | #include <async.h> |
95 | #include <fibril.h> |
95 | #include <fibril.h> |
96 | #include <stdio.h> |
96 | #include <stdio.h> |
97 | #include <libadt/hash_table.h> |
97 | #include <libadt/hash_table.h> |
98 | #include <libadt/list.h> |
98 | #include <libadt/list.h> |
99 | #include <ipc/ipc.h> |
99 | #include <ipc/ipc.h> |
100 | #include <assert.h> |
100 | #include <assert.h> |
101 | #include <errno.h> |
101 | #include <errno.h> |
102 | #include <sys/time.h> |
102 | #include <sys/time.h> |
103 | #include <arch/barrier.h> |
103 | #include <arch/barrier.h> |
104 | #include <bool.h> |
104 | #include <bool.h> |
105 | 105 | ||
106 | atomic_t async_futex = FUTEX_INITIALIZER; |
106 | atomic_t async_futex = FUTEX_INITIALIZER; |
107 | static hash_table_t conn_hash_table; |
107 | static hash_table_t conn_hash_table; |
108 | static LIST_INITIALIZE(timeout_list); |
108 | static LIST_INITIALIZE(timeout_list); |
109 | 109 | ||
110 | /** Structures of this type represent a waiting fibril. */ |
110 | /** Structures of this type represent a waiting fibril. */ |
111 | typedef struct { |
111 | typedef struct { |
112 | /** Expiration time. */ |
112 | /** Expiration time. */ |
113 | struct timeval expires; |
113 | struct timeval expires; |
114 | /** If true, this struct is in the timeout list. */ |
114 | /** If true, this struct is in the timeout list. */ |
115 | int inlist; |
115 | int inlist; |
116 | /** Timeout list link. */ |
116 | /** Timeout list link. */ |
117 | link_t link; |
117 | link_t link; |
118 | 118 | ||
119 | /** Identification of and link to the waiting fibril. */ |
119 | /** Identification of and link to the waiting fibril. */ |
120 | fid_t fid; |
120 | fid_t fid; |
121 | /** If true, this fibril is currently active. */ |
121 | /** If true, this fibril is currently active. */ |
122 | int active; |
122 | int active; |
123 | /** If true, we have timed out. */ |
123 | /** If true, we have timed out. */ |
124 | int timedout; |
124 | int timedout; |
125 | } awaiter_t; |
125 | } awaiter_t; |
126 | 126 | ||
127 | typedef struct { |
127 | typedef struct { |
128 | awaiter_t wdata; |
128 | awaiter_t wdata; |
129 | 129 | ||
130 | /** If reply was received. */ |
130 | /** If reply was received. */ |
131 | int done; |
131 | int done; |
132 | /** Pointer to where the answer data is stored. */ |
132 | /** Pointer to where the answer data is stored. */ |
133 | ipc_call_t *dataptr; |
133 | ipc_call_t *dataptr; |
134 | 134 | ||
135 | ipcarg_t retval; |
135 | ipcarg_t retval; |
136 | } amsg_t; |
136 | } amsg_t; |
137 | 137 | ||
138 | /** |
138 | /** |
139 | * Structures of this type are used to group information about a call and a |
139 | * Structures of this type are used to group information about a call and a |
140 | * message queue link. |
140 | * message queue link. |
141 | */ |
141 | */ |
142 | typedef struct { |
142 | typedef struct { |
143 | link_t link; |
143 | link_t link; |
144 | ipc_callid_t callid; |
144 | ipc_callid_t callid; |
145 | ipc_call_t call; |
145 | ipc_call_t call; |
146 | } msg_t; |
146 | } msg_t; |
147 | 147 | ||
148 | typedef struct { |
148 | typedef struct { |
149 | awaiter_t wdata; |
149 | awaiter_t wdata; |
150 | 150 | ||
151 | /** Hash table link. */ |
151 | /** Hash table link. */ |
152 | link_t link; |
152 | link_t link; |
153 | 153 | ||
154 | /** Incoming phone hash. */ |
154 | /** Incoming phone hash. */ |
155 | ipcarg_t in_phone_hash; |
155 | ipcarg_t in_phone_hash; |
156 | 156 | ||
157 | /** Messages that should be delivered to this fibril. */ |
157 | /** Messages that should be delivered to this fibril. */ |
158 | link_t msg_queue; |
158 | link_t msg_queue; |
159 | 159 | ||
160 | /** Identification of the opening call. */ |
160 | /** Identification of the opening call. */ |
161 | ipc_callid_t callid; |
161 | ipc_callid_t callid; |
162 | /** Call data of the opening call. */ |
162 | /** Call data of the opening call. */ |
163 | ipc_call_t call; |
163 | ipc_call_t call; |
164 | 164 | ||
165 | /** Identification of the closing call. */ |
165 | /** Identification of the closing call. */ |
166 | ipc_callid_t close_callid; |
166 | ipc_callid_t close_callid; |
167 | 167 | ||
168 | /** Fibril function that will be used to handle the connection. */ |
168 | /** Fibril function that will be used to handle the connection. */ |
169 | void (*cfibril)(ipc_callid_t, ipc_call_t *); |
169 | void (*cfibril)(ipc_callid_t, ipc_call_t *); |
170 | } connection_t; |
170 | } connection_t; |
171 | 171 | ||
172 | /** Identifier of the incoming connection handled by the current fibril. */ |
172 | /** Identifier of the incoming connection handled by the current fibril. */ |
173 | __thread connection_t *FIBRIL_connection; |
173 | __thread connection_t *FIBRIL_connection; |
174 | 174 | ||
175 | /** |
175 | /** |
176 | * If true, it is forbidden to use async_req functions and all preemption is |
176 | * If true, it is forbidden to use async_req functions and all preemption is |
177 | * disabled. |
177 | * disabled. |
178 | */ |
178 | */ |
179 | __thread int _in_interrupt_handler; |
179 | __thread int _in_interrupt_handler; |
180 | 180 | ||
181 | static void default_client_connection(ipc_callid_t callid, ipc_call_t *call); |
181 | static void default_client_connection(ipc_callid_t callid, ipc_call_t *call); |
182 | static void default_interrupt_received(ipc_callid_t callid, ipc_call_t *call); |
182 | static void default_interrupt_received(ipc_callid_t callid, ipc_call_t *call); |
183 | 183 | ||
184 | /** |
184 | /** |
185 | * Pointer to a fibril function that will be used to handle connections. |
185 | * Pointer to a fibril function that will be used to handle connections. |
186 | */ |
186 | */ |
187 | static async_client_conn_t client_connection = default_client_connection; |
187 | static async_client_conn_t client_connection = default_client_connection; |
188 | /** |
188 | /** |
189 | * Pointer to a fibril function that will be used to handle interrupt |
189 | * Pointer to a fibril function that will be used to handle interrupt |
190 | * notifications. |
190 | * notifications. |
191 | */ |
191 | */ |
192 | static async_client_conn_t interrupt_received = default_interrupt_received; |
192 | static async_client_conn_t interrupt_received = default_interrupt_received; |
193 | 193 | ||
194 | /* |
194 | /* |
195 | * Getter for _in_interrupt_handler. We need to export the value of this thread |
195 | * Getter for _in_interrupt_handler. We need to export the value of this thread |
196 | * local variable to other modules, but the binutils 2.18 linkers die on an |
196 | * local variable to other modules, but the binutils 2.18 linkers die on an |
197 | * attempt to export this symbol in the header file. For now, consider this as a |
197 | * attempt to export this symbol in the header file. For now, consider this as a |
198 | * workaround. |
198 | * workaround. |
199 | */ |
199 | */ |
200 | bool in_interrupt_handler(void) |
200 | bool in_interrupt_handler(void) |
201 | { |
201 | { |
202 | return _in_interrupt_handler; |
202 | return _in_interrupt_handler; |
203 | } |
203 | } |
204 | 204 | ||
205 | #define CONN_HASH_TABLE_CHAINS 32 |
205 | #define CONN_HASH_TABLE_CHAINS 32 |
206 | 206 | ||
207 | /** Compute hash into the connection hash table based on the source phone hash. |
207 | /** Compute hash into the connection hash table based on the source phone hash. |
208 | * |
208 | * |
209 | * @param key Pointer to source phone hash. |
209 | * @param key Pointer to source phone hash. |
210 | * |
210 | * |
211 | * @return Index into the connection hash table. |
211 | * @return Index into the connection hash table. |
212 | */ |
212 | */ |
213 | static hash_index_t conn_hash(unsigned long *key) |
213 | static hash_index_t conn_hash(unsigned long *key) |
214 | { |
214 | { |
215 | assert(key); |
215 | assert(key); |
216 | return ((*key) >> 4) % CONN_HASH_TABLE_CHAINS; |
216 | return ((*key) >> 4) % CONN_HASH_TABLE_CHAINS; |
217 | } |
217 | } |
218 | 218 | ||
219 | /** Compare hash table item with a key. |
219 | /** Compare hash table item with a key. |
220 | * |
220 | * |
221 | * @param key Array containing the source phone hash as the only item. |
221 | * @param key Array containing the source phone hash as the only item. |
222 | * @param keys Expected 1 but ignored. |
222 | * @param keys Expected 1 but ignored. |
223 | * @param item Connection hash table item. |
223 | * @param item Connection hash table item. |
224 | * |
224 | * |
225 | * @return True on match, false otherwise. |
225 | * @return True on match, false otherwise. |
226 | */ |
226 | */ |
227 | static int conn_compare(unsigned long key[], hash_count_t keys, link_t *item) |
227 | static int conn_compare(unsigned long key[], hash_count_t keys, link_t *item) |
228 | { |
228 | { |
229 | connection_t *hs; |
229 | connection_t *hs; |
230 | 230 | ||
231 | hs = hash_table_get_instance(item, connection_t, link); |
231 | hs = hash_table_get_instance(item, connection_t, link); |
232 | 232 | ||
233 | return key[0] == hs->in_phone_hash; |
233 | return key[0] == hs->in_phone_hash; |
234 | } |
234 | } |
235 | 235 | ||
236 | /** Connection hash table removal callback function. |
236 | /** Connection hash table removal callback function. |
237 | * |
237 | * |
238 | * This function is called whenever a connection is removed from the connection |
238 | * This function is called whenever a connection is removed from the connection |
239 | * hash table. |
239 | * hash table. |
240 | * |
240 | * |
241 | * @param item Connection hash table item being removed. |
241 | * @param item Connection hash table item being removed. |
242 | */ |
242 | */ |
243 | static void conn_remove(link_t *item) |
243 | static void conn_remove(link_t *item) |
244 | { |
244 | { |
245 | free(hash_table_get_instance(item, connection_t, link)); |
245 | free(hash_table_get_instance(item, connection_t, link)); |
246 | } |
246 | } |
247 | 247 | ||
248 | 248 | ||
249 | /** Operations for the connection hash table. */ |
249 | /** Operations for the connection hash table. */ |
250 | static hash_table_operations_t conn_hash_table_ops = { |
250 | static hash_table_operations_t conn_hash_table_ops = { |
251 | .hash = conn_hash, |
251 | .hash = conn_hash, |
252 | .compare = conn_compare, |
252 | .compare = conn_compare, |
253 | .remove_callback = conn_remove |
253 | .remove_callback = conn_remove |
254 | }; |
254 | }; |
255 | 255 | ||
256 | /** Sort in current fibril's timeout request. |
256 | /** Sort in current fibril's timeout request. |
257 | * |
257 | * |
258 | * @param wd Wait data of the current fibril. |
258 | * @param wd Wait data of the current fibril. |
259 | */ |
259 | */ |
260 | static void insert_timeout(awaiter_t *wd) |
260 | static void insert_timeout(awaiter_t *wd) |
261 | { |
261 | { |
262 | link_t *tmp; |
262 | link_t *tmp; |
263 | awaiter_t *cur; |
263 | awaiter_t *cur; |
264 | 264 | ||
265 | wd->timedout = 0; |
265 | wd->timedout = 0; |
266 | wd->inlist = 1; |
266 | wd->inlist = 1; |
267 | 267 | ||
268 | tmp = timeout_list.next; |
268 | tmp = timeout_list.next; |
269 | while (tmp != &timeout_list) { |
269 | while (tmp != &timeout_list) { |
270 | cur = list_get_instance(tmp, awaiter_t, link); |
270 | cur = list_get_instance(tmp, awaiter_t, link); |
271 | if (tv_gteq(&cur->expires, &wd->expires)) |
271 | if (tv_gteq(&cur->expires, &wd->expires)) |
272 | break; |
272 | break; |
273 | tmp = tmp->next; |
273 | tmp = tmp->next; |
274 | } |
274 | } |
275 | list_append(&wd->link, tmp); |
275 | list_append(&wd->link, tmp); |
276 | } |
276 | } |
277 | 277 | ||
278 | /** Try to route a call to an appropriate connection fibril. |
278 | /** Try to route a call to an appropriate connection fibril. |
279 | * |
279 | * |
280 | * If the proper connection fibril is found, a message with the call is added to |
280 | * If the proper connection fibril is found, a message with the call is added to |
281 | * its message queue. If the fibril was not active, it is activated and all |
281 | * its message queue. If the fibril was not active, it is activated and all |
282 | * timeouts are unregistered. |
282 | * timeouts are unregistered. |
283 | * |
283 | * |
284 | * @param callid Hash of the incoming call. |
284 | * @param callid Hash of the incoming call. |
285 | * @param call Data of the incoming call. |
285 | * @param call Data of the incoming call. |
286 | * |
286 | * |
287 | * @return Zero if the call doesn't match any connection. |
287 | * @return Zero if the call doesn't match any connection. |
288 | * One if the call was passed to the respective connection |
288 | * One if the call was passed to the respective connection |
289 | * fibril. |
289 | * fibril. |
290 | */ |
290 | */ |
291 | static int route_call(ipc_callid_t callid, ipc_call_t *call) |
291 | static int route_call(ipc_callid_t callid, ipc_call_t *call) |
292 | { |
292 | { |
293 | connection_t *conn; |
293 | connection_t *conn; |
294 | msg_t *msg; |
294 | msg_t *msg; |
295 | link_t *hlp; |
295 | link_t *hlp; |
296 | unsigned long key; |
296 | unsigned long key; |
297 | 297 | ||
298 | futex_down(&async_futex); |
298 | futex_down(&async_futex); |
299 | 299 | ||
300 | key = call->in_phone_hash; |
300 | key = call->in_phone_hash; |
301 | hlp = hash_table_find(&conn_hash_table, &key); |
301 | hlp = hash_table_find(&conn_hash_table, &key); |
302 | if (!hlp) { |
302 | if (!hlp) { |
303 | futex_up(&async_futex); |
303 | futex_up(&async_futex); |
304 | return 0; |
304 | return 0; |
305 | } |
305 | } |
306 | conn = hash_table_get_instance(hlp, connection_t, link); |
306 | conn = hash_table_get_instance(hlp, connection_t, link); |
307 | 307 | ||
308 | msg = malloc(sizeof(*msg)); |
308 | msg = malloc(sizeof(*msg)); |
309 | msg->callid = callid; |
309 | msg->callid = callid; |
310 | msg->call = *call; |
310 | msg->call = *call; |
311 | list_append(&msg->link, &conn->msg_queue); |
311 | list_append(&msg->link, &conn->msg_queue); |
312 | 312 | ||
313 | if (IPC_GET_METHOD(*call) == IPC_M_PHONE_HUNGUP) |
313 | if (IPC_GET_METHOD(*call) == IPC_M_PHONE_HUNGUP) |
314 | conn->close_callid = callid; |
314 | conn->close_callid = callid; |
315 | 315 | ||
316 | /* If the connection fibril is waiting for an event, activate it */ |
316 | /* If the connection fibril is waiting for an event, activate it */ |
317 | if (!conn->wdata.active) { |
317 | if (!conn->wdata.active) { |
318 | /* If in timeout list, remove it */ |
318 | /* If in timeout list, remove it */ |
319 | if (conn->wdata.inlist) { |
319 | if (conn->wdata.inlist) { |
320 | conn->wdata.inlist = 0; |
320 | conn->wdata.inlist = 0; |
321 | list_remove(&conn->wdata.link); |
321 | list_remove(&conn->wdata.link); |
322 | } |
322 | } |
323 | conn->wdata.active = 1; |
323 | conn->wdata.active = 1; |
324 | fibril_add_ready(conn->wdata.fid); |
324 | fibril_add_ready(conn->wdata.fid); |
325 | } |
325 | } |
326 | 326 | ||
327 | futex_up(&async_futex); |
327 | futex_up(&async_futex); |
328 | 328 | ||
329 | return 1; |
329 | return 1; |
330 | } |
330 | } |
331 | 331 | ||
332 | /** Return new incoming message for the current (fibril-local) connection. |
332 | /** Return new incoming message for the current (fibril-local) connection. |
333 | * |
333 | * |
334 | * @param call Storage where the incoming call data will be stored. |
334 | * @param call Storage where the incoming call data will be stored. |
335 | * @param usecs Timeout in microseconds. Zero denotes no timeout. |
335 | * @param usecs Timeout in microseconds. Zero denotes no timeout. |
336 | * |
336 | * |
337 | * @return If no timeout was specified, then a hash of the |
337 | * @return If no timeout was specified, then a hash of the |
338 | * incoming call is returned. If a timeout is specified, |
338 | * incoming call is returned. If a timeout is specified, |
339 | * then a hash of the incoming call is returned unless |
339 | * then a hash of the incoming call is returned unless |
340 | * the timeout expires prior to receiving a message. In |
340 | * the timeout expires prior to receiving a message. In |
341 | * that case zero is returned. |
341 | * that case zero is returned. |
342 | */ |
342 | */ |
343 | ipc_callid_t async_get_call_timeout(ipc_call_t *call, suseconds_t usecs) |
343 | ipc_callid_t async_get_call_timeout(ipc_call_t *call, suseconds_t usecs) |
344 | { |
344 | { |
345 | msg_t *msg; |
345 | msg_t *msg; |
346 | ipc_callid_t callid; |
346 | ipc_callid_t callid; |
347 | connection_t *conn; |
347 | connection_t *conn; |
348 | 348 | ||
349 | assert(FIBRIL_connection); |
349 | assert(FIBRIL_connection); |
350 | /* GCC 4.1.0 coughs on FIBRIL_connection-> dereference, |
350 | /* GCC 4.1.0 coughs on FIBRIL_connection-> dereference, |
351 | * GCC 4.1.1 happilly puts the rdhwr instruction in delay slot. |
351 | * GCC 4.1.1 happilly puts the rdhwr instruction in delay slot. |
352 | * I would never expect to find so many errors in |
352 | * I would never expect to find so many errors in |
353 | * a compiler *($&$(*&$ |
353 | * a compiler *($&$(*&$ |
354 | */ |
354 | */ |
355 | conn = FIBRIL_connection; |
355 | conn = FIBRIL_connection; |
356 | 356 | ||
357 | futex_down(&async_futex); |
357 | futex_down(&async_futex); |
358 | 358 | ||
359 | if (usecs) { |
359 | if (usecs) { |
360 | gettimeofday(&conn->wdata.expires, NULL); |
360 | gettimeofday(&conn->wdata.expires, NULL); |
361 | tv_add(&conn->wdata.expires, usecs); |
361 | tv_add(&conn->wdata.expires, usecs); |
362 | } else { |
362 | } else { |
363 | conn->wdata.inlist = 0; |
363 | conn->wdata.inlist = 0; |
364 | } |
364 | } |
365 | /* If nothing in queue, wait until something arrives */ |
365 | /* If nothing in queue, wait until something arrives */ |
366 | while (list_empty(&conn->msg_queue)) { |
366 | while (list_empty(&conn->msg_queue)) { |
367 | if (usecs) |
367 | if (usecs) |
368 | insert_timeout(&conn->wdata); |
368 | insert_timeout(&conn->wdata); |
369 | 369 | ||
370 | conn->wdata.active = 0; |
370 | conn->wdata.active = 0; |
371 | /* |
371 | /* |
372 | * Note: the current fibril will be rescheduled either due to a |
372 | * Note: the current fibril will be rescheduled either due to a |
373 | * timeout or due to an arriving message destined to it. In the |
373 | * timeout or due to an arriving message destined to it. In the |
374 | * former case, handle_expired_timeouts() and, in the latter |
374 | * former case, handle_expired_timeouts() and, in the latter |
375 | * case, route_call() will perform the wakeup. |
375 | * case, route_call() will perform the wakeup. |
376 | */ |
376 | */ |
377 | fibril_switch(FIBRIL_TO_MANAGER); |
377 | fibril_switch(FIBRIL_TO_MANAGER); |
378 | /* |
378 | /* |
379 | * Futex is up after getting back from async_manager get it |
379 | * Futex is up after getting back from async_manager get it |
380 | * again. |
380 | * again. |
381 | */ |
381 | */ |
382 | futex_down(&async_futex); |
382 | futex_down(&async_futex); |
383 | if (usecs && conn->wdata.timedout && |
383 | if (usecs && conn->wdata.timedout && |
384 | list_empty(&conn->msg_queue)) { |
384 | list_empty(&conn->msg_queue)) { |
385 | /* If we timed out -> exit */ |
385 | /* If we timed out -> exit */ |
386 | futex_up(&async_futex); |
386 | futex_up(&async_futex); |
387 | return 0; |
387 | return 0; |
388 | } |
388 | } |
389 | } |
389 | } |
390 | 390 | ||
391 | msg = list_get_instance(conn->msg_queue.next, msg_t, link); |
391 | msg = list_get_instance(conn->msg_queue.next, msg_t, link); |
392 | list_remove(&msg->link); |
392 | list_remove(&msg->link); |
393 | callid = msg->callid; |
393 | callid = msg->callid; |
394 | *call = msg->call; |
394 | *call = msg->call; |
395 | free(msg); |
395 | free(msg); |
396 | 396 | ||
397 | futex_up(&async_futex); |
397 | futex_up(&async_futex); |
398 | return callid; |
398 | return callid; |
399 | } |
399 | } |
400 | 400 | ||
401 | /** Default fibril function that gets called to handle new connection. |
401 | /** Default fibril function that gets called to handle new connection. |
402 | * |
402 | * |
403 | * This function is defined as a weak symbol - to be redefined in user code. |
403 | * This function is defined as a weak symbol - to be redefined in user code. |
404 | * |
404 | * |
405 | * @param callid Hash of the incoming call. |
405 | * @param callid Hash of the incoming call. |
406 | * @param call Data of the incoming call. |
406 | * @param call Data of the incoming call. |
407 | */ |
407 | */ |
408 | static void default_client_connection(ipc_callid_t callid, ipc_call_t *call) |
408 | static void default_client_connection(ipc_callid_t callid, ipc_call_t *call) |
409 | { |
409 | { |
410 | ipc_answer_0(callid, ENOENT); |
410 | ipc_answer_0(callid, ENOENT); |
411 | } |
411 | } |
412 | 412 | ||
413 | /** Default fibril function that gets called to handle interrupt notifications. |
413 | /** Default fibril function that gets called to handle interrupt notifications. |
414 | * |
414 | * |
415 | * @param callid Hash of the incoming call. |
415 | * @param callid Hash of the incoming call. |
416 | * @param call Data of the incoming call. |
416 | * @param call Data of the incoming call. |
417 | */ |
417 | */ |
418 | static void default_interrupt_received(ipc_callid_t callid, ipc_call_t *call) |
418 | static void default_interrupt_received(ipc_callid_t callid, ipc_call_t *call) |
419 | { |
419 | { |
420 | } |
420 | } |
421 | 421 | ||
422 | /** Wrapper for client connection fibril. |
422 | /** Wrapper for client connection fibril. |
423 | * |
423 | * |
424 | * When a new connection arrives, a fibril with this implementing function is |
424 | * When a new connection arrives, a fibril with this implementing function is |
425 | * created. It calls client_connection() and does the final cleanup. |
425 | * created. It calls client_connection() and does the final cleanup. |
426 | * |
426 | * |
427 | * @param arg Connection structure pointer. |
427 | * @param arg Connection structure pointer. |
428 | * |
428 | * |
429 | * @return Always zero. |
429 | * @return Always zero. |
430 | */ |
430 | */ |
431 | static int connection_fibril(void *arg) |
431 | static int connection_fibril(void *arg) |
432 | { |
432 | { |
433 | unsigned long key; |
433 | unsigned long key; |
434 | msg_t *msg; |
434 | msg_t *msg; |
435 | int close_answered = 0; |
435 | int close_answered = 0; |
436 | 436 | ||
437 | /* Setup fibril-local connection pointer */ |
437 | /* Setup fibril-local connection pointer */ |
438 | FIBRIL_connection = (connection_t *) arg; |
438 | FIBRIL_connection = (connection_t *) arg; |
439 | FIBRIL_connection->cfibril(FIBRIL_connection->callid, |
439 | FIBRIL_connection->cfibril(FIBRIL_connection->callid, |
440 | &FIBRIL_connection->call); |
440 | &FIBRIL_connection->call); |
441 | 441 | ||
442 | /* Remove myself from the connection hash table */ |
442 | /* Remove myself from the connection hash table */ |
443 | futex_down(&async_futex); |
443 | futex_down(&async_futex); |
444 | key = FIBRIL_connection->in_phone_hash; |
444 | key = FIBRIL_connection->in_phone_hash; |
445 | hash_table_remove(&conn_hash_table, &key, 1); |
445 | hash_table_remove(&conn_hash_table, &key, 1); |
446 | futex_up(&async_futex); |
446 | futex_up(&async_futex); |
447 | 447 | ||
448 | /* Answer all remaining messages with EHANGUP */ |
448 | /* Answer all remaining messages with EHANGUP */ |
449 | while (!list_empty(&FIBRIL_connection->msg_queue)) { |
449 | while (!list_empty(&FIBRIL_connection->msg_queue)) { |
450 | msg = list_get_instance(FIBRIL_connection->msg_queue.next, |
450 | msg = list_get_instance(FIBRIL_connection->msg_queue.next, |
451 | msg_t, link); |
451 | msg_t, link); |
452 | list_remove(&msg->link); |
452 | list_remove(&msg->link); |
453 | if (msg->callid == FIBRIL_connection->close_callid) |
453 | if (msg->callid == FIBRIL_connection->close_callid) |
454 | close_answered = 1; |
454 | close_answered = 1; |
455 | ipc_answer_0(msg->callid, EHANGUP); |
455 | ipc_answer_0(msg->callid, EHANGUP); |
456 | free(msg); |
456 | free(msg); |
457 | } |
457 | } |
458 | if (FIBRIL_connection->close_callid) |
458 | if (FIBRIL_connection->close_callid) |
459 | ipc_answer_0(FIBRIL_connection->close_callid, EOK); |
459 | ipc_answer_0(FIBRIL_connection->close_callid, EOK); |
460 | 460 | ||
461 | return 0; |
461 | return 0; |
462 | } |
462 | } |
463 | 463 | ||
464 | /** Create a new fibril for a new connection. |
464 | /** Create a new fibril for a new connection. |
465 | * |
465 | * |
466 | * Creates new fibril for connection, fills in connection structures and inserts |
466 | * Creates new fibril for connection, fills in connection structures and inserts |
467 | * it into the hash table, so that later we can easily do routing of messages to |
467 | * it into the hash table, so that later we can easily do routing of messages to |
468 | * particular fibrils. |
468 | * particular fibrils. |
469 | * |
469 | * |
470 | * @param in_phone_hash Identification of the incoming connection. |
470 | * @param in_phone_hash Identification of the incoming connection. |
471 | * @param callid Hash of the opening IPC_M_CONNECT_ME_TO call. |
471 | * @param callid Hash of the opening IPC_M_CONNECT_ME_TO call. |
472 | * If callid is zero, the connection was opened by |
472 | * If callid is zero, the connection was opened by |
473 | * accepting the IPC_M_CONNECT_TO_ME call and this function |
473 | * accepting the IPC_M_CONNECT_TO_ME call and this function |
474 | * is called directly by the server. |
474 | * is called directly by the server. |
475 | * @param call Call data of the opening call. |
475 | * @param call Call data of the opening call. |
476 | * @param cfibril Fibril function that should be called upon opening the |
476 | * @param cfibril Fibril function that should be called upon opening the |
477 | * connection. |
477 | * connection. |
478 | * |
478 | * |
479 | * @return New fibril id or NULL on failure. |
479 | * @return New fibril id or NULL on failure. |
480 | */ |
480 | */ |
481 | fid_t async_new_connection(ipcarg_t in_phone_hash, ipc_callid_t callid, |
481 | fid_t async_new_connection(ipcarg_t in_phone_hash, ipc_callid_t callid, |
482 | ipc_call_t *call, void (*cfibril)(ipc_callid_t, ipc_call_t *)) |
482 | ipc_call_t *call, void (*cfibril)(ipc_callid_t, ipc_call_t *)) |
483 | { |
483 | { |
484 | connection_t *conn; |
484 | connection_t *conn; |
485 | unsigned long key; |
485 | unsigned long key; |
486 | 486 | ||
487 | conn = malloc(sizeof(*conn)); |
487 | conn = malloc(sizeof(*conn)); |
488 | if (!conn) { |
488 | if (!conn) { |
489 | if (callid) |
489 | if (callid) |
490 | ipc_answer_0(callid, ENOMEM); |
490 | ipc_answer_0(callid, ENOMEM); |
491 | return NULL; |
491 | return NULL; |
492 | } |
492 | } |
493 | conn->in_phone_hash = in_phone_hash; |
493 | conn->in_phone_hash = in_phone_hash; |
494 | list_initialize(&conn->msg_queue); |
494 | list_initialize(&conn->msg_queue); |
495 | conn->callid = callid; |
495 | conn->callid = callid; |
496 | conn->close_callid = 0; |
496 | conn->close_callid = 0; |
497 | if (call) |
497 | if (call) |
498 | conn->call = *call; |
498 | conn->call = *call; |
499 | conn->wdata.active = 1; /* We will activate the fibril ASAP */ |
499 | conn->wdata.active = 1; /* We will activate the fibril ASAP */ |
500 | conn->cfibril = cfibril; |
500 | conn->cfibril = cfibril; |
501 | 501 | ||
502 | conn->wdata.fid = fibril_create(connection_fibril, conn); |
502 | conn->wdata.fid = fibril_create(connection_fibril, conn); |
503 | if (!conn->wdata.fid) { |
503 | if (!conn->wdata.fid) { |
504 | free(conn); |
504 | free(conn); |
505 | if (callid) |
505 | if (callid) |
506 | ipc_answer_0(callid, ENOMEM); |
506 | ipc_answer_0(callid, ENOMEM); |
507 | return NULL; |
507 | return NULL; |
508 | } |
508 | } |
509 | /* Add connection to the connection hash table */ |
509 | /* Add connection to the connection hash table */ |
510 | key = conn->in_phone_hash; |
510 | key = conn->in_phone_hash; |
511 | futex_down(&async_futex); |
511 | futex_down(&async_futex); |
512 | hash_table_insert(&conn_hash_table, &key, &conn->link); |
512 | hash_table_insert(&conn_hash_table, &key, &conn->link); |
513 | futex_up(&async_futex); |
513 | futex_up(&async_futex); |
514 | 514 | ||
515 | fibril_add_ready(conn->wdata.fid); |
515 | fibril_add_ready(conn->wdata.fid); |
516 | 516 | ||
517 | return conn->wdata.fid; |
517 | return conn->wdata.fid; |
518 | } |
518 | } |
519 | 519 | ||
520 | /** Handle a call that was received. |
520 | /** Handle a call that was received. |
521 | * |
521 | * |
522 | * If the call has the IPC_M_CONNECT_ME_TO method, a new connection is created. |
522 | * If the call has the IPC_M_CONNECT_ME_TO method, a new connection is created. |
523 | * Otherwise the call is routed to its connection fibril. |
523 | * Otherwise the call is routed to its connection fibril. |
524 | * |
524 | * |
525 | * @param callid Hash of the incoming call. |
525 | * @param callid Hash of the incoming call. |
526 | * @param call Data of the incoming call. |
526 | * @param call Data of the incoming call. |
527 | */ |
527 | */ |
528 | static void handle_call(ipc_callid_t callid, ipc_call_t *call) |
528 | static void handle_call(ipc_callid_t callid, ipc_call_t *call) |
529 | { |
529 | { |
530 | /* Unrouted call - do some default behaviour */ |
530 | /* Unrouted call - do some default behaviour */ |
531 | if ((callid & IPC_CALLID_NOTIFICATION)) { |
531 | if ((callid & IPC_CALLID_NOTIFICATION)) { |
532 | _in_interrupt_handler = 1; |
532 | _in_interrupt_handler = 1; |
533 | (*interrupt_received)(callid, call); |
533 | (*interrupt_received)(callid, call); |
534 | _in_interrupt_handler = 0; |
534 | _in_interrupt_handler = 0; |
535 | return; |
535 | return; |
536 | } |
536 | } |
537 | 537 | ||
538 | switch (IPC_GET_METHOD(*call)) { |
538 | switch (IPC_GET_METHOD(*call)) { |
539 | case IPC_M_CONNECT_ME_TO: |
539 | case IPC_M_CONNECT_ME_TO: |
540 | /* Open new connection with fibril etc. */ |
540 | /* Open new connection with fibril etc. */ |
541 | async_new_connection(IPC_GET_ARG5(*call), callid, call, |
541 | async_new_connection(IPC_GET_ARG5(*call), callid, call, |
542 | client_connection); |
542 | client_connection); |
543 | return; |
543 | return; |
544 | } |
544 | } |
545 | 545 | ||
546 | /* Try to route the call through the connection hash table */ |
546 | /* Try to route the call through the connection hash table */ |
547 | if (route_call(callid, call)) |
547 | if (route_call(callid, call)) |
548 | return; |
548 | return; |
549 | 549 | ||
550 | /* Unknown call from unknown phone - hang it up */ |
550 | /* Unknown call from unknown phone - hang it up */ |
551 | ipc_answer_0(callid, EHANGUP); |
551 | ipc_answer_0(callid, EHANGUP); |
552 | } |
552 | } |
553 | 553 | ||
554 | /** Fire all timeouts that expired. */ |
554 | /** Fire all timeouts that expired. */ |
555 | static void handle_expired_timeouts(void) |
555 | static void handle_expired_timeouts(void) |
556 | { |
556 | { |
557 | struct timeval tv; |
557 | struct timeval tv; |
558 | awaiter_t *waiter; |
558 | awaiter_t *waiter; |
559 | link_t *cur; |
559 | link_t *cur; |
560 | 560 | ||
561 | gettimeofday(&tv, NULL); |
561 | gettimeofday(&tv, NULL); |
562 | futex_down(&async_futex); |
562 | futex_down(&async_futex); |
563 | 563 | ||
564 | cur = timeout_list.next; |
564 | cur = timeout_list.next; |
565 | while (cur != &timeout_list) { |
565 | while (cur != &timeout_list) { |
566 | waiter = list_get_instance(cur, awaiter_t, link); |
566 | waiter = list_get_instance(cur, awaiter_t, link); |
567 | if (tv_gt(&waiter->expires, &tv)) |
567 | if (tv_gt(&waiter->expires, &tv)) |
568 | break; |
568 | break; |
569 | cur = cur->next; |
569 | cur = cur->next; |
570 | list_remove(&waiter->link); |
570 | list_remove(&waiter->link); |
571 | waiter->inlist = 0; |
571 | waiter->inlist = 0; |
572 | waiter->timedout = 1; |
572 | waiter->timedout = 1; |
573 | /* |
573 | /* |
574 | * Redundant condition? |
574 | * Redundant condition? |
575 | * The fibril should not be active when it gets here. |
575 | * The fibril should not be active when it gets here. |
576 | */ |
576 | */ |
577 | if (!waiter->active) { |
577 | if (!waiter->active) { |
578 | waiter->active = 1; |
578 | waiter->active = 1; |
579 | fibril_add_ready(waiter->fid); |
579 | fibril_add_ready(waiter->fid); |
580 | } |
580 | } |
581 | } |
581 | } |
582 | 582 | ||
583 | futex_up(&async_futex); |
583 | futex_up(&async_futex); |
584 | } |
584 | } |
585 | 585 | ||
586 | /** Endless loop dispatching incoming calls and answers. |
586 | /** Endless loop dispatching incoming calls and answers. |
587 | * |
587 | * |
588 | * @return Never returns. |
588 | * @return Never returns. |
589 | */ |
589 | */ |
590 | static int async_manager_worker(void) |
590 | static int async_manager_worker(void) |
591 | { |
591 | { |
592 | ipc_call_t call; |
592 | ipc_call_t call; |
593 | ipc_callid_t callid; |
593 | ipc_callid_t callid; |
594 | int timeout; |
594 | int timeout; |
595 | awaiter_t *waiter; |
595 | awaiter_t *waiter; |
596 | struct timeval tv; |
596 | struct timeval tv; |
597 | 597 | ||
598 | while (1) { |
598 | while (1) { |
599 | if (fibril_switch(FIBRIL_FROM_MANAGER)) { |
599 | if (fibril_switch(FIBRIL_FROM_MANAGER)) { |
600 | futex_up(&async_futex); |
600 | futex_up(&async_futex); |
601 | /* |
601 | /* |
602 | * async_futex is always held when entering a manager |
602 | * async_futex is always held when entering a manager |
603 | * fibril. |
603 | * fibril. |
604 | */ |
604 | */ |
605 | continue; |
605 | continue; |
606 | } |
606 | } |
607 | futex_down(&async_futex); |
607 | futex_down(&async_futex); |
608 | if (!list_empty(&timeout_list)) { |
608 | if (!list_empty(&timeout_list)) { |
609 | waiter = list_get_instance(timeout_list.next, awaiter_t, |
609 | waiter = list_get_instance(timeout_list.next, awaiter_t, |
610 | link); |
610 | link); |
611 | gettimeofday(&tv, NULL); |
611 | gettimeofday(&tv, NULL); |
612 | if (tv_gteq(&tv, &waiter->expires)) { |
612 | if (tv_gteq(&tv, &waiter->expires)) { |
613 | futex_up(&async_futex); |
613 | futex_up(&async_futex); |
614 | handle_expired_timeouts(); |
614 | handle_expired_timeouts(); |
615 | continue; |
615 | continue; |
616 | } else |
616 | } else |
617 | timeout = tv_sub(&waiter->expires, &tv); |
617 | timeout = tv_sub(&waiter->expires, &tv); |
618 | } else |
618 | } else |
619 | timeout = SYNCH_NO_TIMEOUT; |
619 | timeout = SYNCH_NO_TIMEOUT; |
620 | futex_up(&async_futex); |
620 | futex_up(&async_futex); |
621 | 621 | ||
622 | callid = ipc_wait_cycle(&call, timeout, SYNCH_FLAGS_NONE); |
622 | callid = ipc_wait_cycle(&call, timeout, SYNCH_FLAGS_NONE); |
623 | 623 | ||
624 | if (!callid) { |
624 | if (!callid) { |
625 | handle_expired_timeouts(); |
625 | handle_expired_timeouts(); |
626 | continue; |
626 | continue; |
627 | } |
627 | } |
628 | 628 | ||
629 | if (callid & IPC_CALLID_ANSWERED) { |
629 | if (callid & IPC_CALLID_ANSWERED) { |
630 | continue; |
630 | continue; |
631 | } |
631 | } |
632 | 632 | ||
633 | handle_call(callid, &call); |
633 | handle_call(callid, &call); |
634 | } |
634 | } |
635 | 635 | ||
636 | return 0; |
636 | return 0; |
637 | } |
637 | } |
638 | 638 | ||
639 | /** Function to start async_manager as a standalone fibril. |
639 | /** Function to start async_manager as a standalone fibril. |
640 | * |
640 | * |
641 | * When more kernel threads are used, one async manager should exist per thread. |
641 | * When more kernel threads are used, one async manager should exist per thread. |
642 | * |
642 | * |
643 | * @param arg Unused. |
643 | * @param arg Unused. |
644 | * |
644 | * |
645 | * @return Never returns. |
645 | * @return Never returns. |
646 | */ |
646 | */ |
647 | static int async_manager_fibril(void *arg) |
647 | static int async_manager_fibril(void *arg) |
648 | { |
648 | { |
649 | futex_up(&async_futex); |
649 | futex_up(&async_futex); |
650 | /* |
650 | /* |
651 | * async_futex is always locked when entering manager |
651 | * async_futex is always locked when entering manager |
652 | */ |
652 | */ |
653 | async_manager_worker(); |
653 | async_manager_worker(); |
654 | 654 | ||
655 | return 0; |
655 | return 0; |
656 | } |
656 | } |
657 | 657 | ||
658 | /** Add one manager to manager list. */ |
658 | /** Add one manager to manager list. */ |
659 | void async_create_manager(void) |
659 | void async_create_manager(void) |
660 | { |
660 | { |
661 | fid_t fid; |
661 | fid_t fid; |
662 | 662 | ||
663 | fid = fibril_create(async_manager_fibril, NULL); |
663 | fid = fibril_create(async_manager_fibril, NULL); |
664 | fibril_add_manager(fid); |
664 | fibril_add_manager(fid); |
665 | } |
665 | } |
666 | 666 | ||
667 | /** Remove one manager from manager list */ |
667 | /** Remove one manager from manager list */ |
668 | void async_destroy_manager(void) |
668 | void async_destroy_manager(void) |
669 | { |
669 | { |
670 | fibril_remove_manager(); |
670 | fibril_remove_manager(); |
671 | } |
671 | } |
672 | 672 | ||
673 | /** Initialize the async framework. |
673 | /** Initialize the async framework. |
674 | * |
674 | * |
675 | * @return Zero on success or an error code. |
675 | * @return Zero on success or an error code. |
676 | */ |
676 | */ |
677 | int _async_init(void) |
677 | int _async_init(void) |
678 | { |
678 | { |
679 | if (!hash_table_create(&conn_hash_table, CONN_HASH_TABLE_CHAINS, 1, |
679 | if (!hash_table_create(&conn_hash_table, CONN_HASH_TABLE_CHAINS, 1, |
680 | &conn_hash_table_ops)) { |
680 | &conn_hash_table_ops)) { |
681 | printf("%s: cannot create hash table\n", "async"); |
681 | printf("%s: cannot create hash table\n", "async"); |
682 | return ENOMEM; |
682 | return ENOMEM; |
683 | } |
683 | } |
684 | 684 | ||
685 | return 0; |
685 | return 0; |
686 | } |
686 | } |
687 | 687 | ||
688 | /** Reply received callback. |
688 | /** Reply received callback. |
689 | * |
689 | * |
690 | * This function is called whenever a reply for an asynchronous message sent out |
690 | * This function is called whenever a reply for an asynchronous message sent out |
691 | * by the asynchronous framework is received. |
691 | * by the asynchronous framework is received. |
692 | * |
692 | * |
693 | * Notify the fibril which is waiting for this message that it has arrived. |
693 | * Notify the fibril which is waiting for this message that it has arrived. |
694 | * |
694 | * |
695 | * @param private Pointer to the asynchronous message record. |
695 | * @param private Pointer to the asynchronous message record. |
696 | * @param retval Value returned in the answer. |
696 | * @param retval Value returned in the answer. |
697 | * @param data Call data of the answer. |
697 | * @param data Call data of the answer. |
698 | */ |
698 | */ |
699 | static void reply_received(void *private, int retval, ipc_call_t *data) |
699 | static void reply_received(void *private, int retval, ipc_call_t *data) |
700 | { |
700 | { |
701 | amsg_t *msg = (amsg_t *) private; |
701 | amsg_t *msg = (amsg_t *) private; |
702 | 702 | ||
703 | msg->retval = retval; |
703 | msg->retval = retval; |
704 | 704 | ||
705 | futex_down(&async_futex); |
705 | futex_down(&async_futex); |
706 | /* Copy data after futex_down, just in case the call was detached */ |
706 | /* Copy data after futex_down, just in case the call was detached */ |
707 | if (msg->dataptr) |
707 | if (msg->dataptr) |
708 | *msg->dataptr = *data; |
708 | *msg->dataptr = *data; |
709 | 709 | ||
710 | write_barrier(); |
710 | write_barrier(); |
711 | /* Remove message from timeout list */ |
711 | /* Remove message from timeout list */ |
712 | if (msg->wdata.inlist) |
712 | if (msg->wdata.inlist) |
713 | list_remove(&msg->wdata.link); |
713 | list_remove(&msg->wdata.link); |
714 | msg->done = 1; |
714 | msg->done = 1; |
715 | if (!msg->wdata.active) { |
715 | if (!msg->wdata.active) { |
716 | msg->wdata.active = 1; |
716 | msg->wdata.active = 1; |
717 | fibril_add_ready(msg->wdata.fid); |
717 | fibril_add_ready(msg->wdata.fid); |
718 | } |
718 | } |
719 | futex_up(&async_futex); |
719 | futex_up(&async_futex); |
720 | } |
720 | } |
721 | 721 | ||
722 | /** Send message and return id of the sent message. |
722 | /** Send message and return id of the sent message. |
723 | * |
723 | * |
724 | * The return value can be used as input for async_wait() to wait for |
724 | * The return value can be used as input for async_wait() to wait for |
725 | * completion. |
725 | * completion. |
726 | * |
726 | * |
727 | * @param phoneid Handle of the phone that will be used for the send. |
727 | * @param phoneid Handle of the phone that will be used for the send. |
728 | * @param method Service-defined method. |
728 | * @param method Service-defined method. |
729 | * @param arg1 Service-defined payload argument. |
729 | * @param arg1 Service-defined payload argument. |
730 | * @param arg2 Service-defined payload argument. |
730 | * @param arg2 Service-defined payload argument. |
731 | * @param arg3 Service-defined payload argument. |
731 | * @param arg3 Service-defined payload argument. |
732 | * @param arg4 Service-defined payload argument. |
732 | * @param arg4 Service-defined payload argument. |
733 | * @param dataptr If non-NULL, storage where the reply data will be |
733 | * @param dataptr If non-NULL, storage where the reply data will be |
734 | * stored. |
734 | * stored. |
735 | * |
735 | * |
736 | * @return Hash of the sent message. |
736 | * @return Hash of the sent message. |
737 | */ |
737 | */ |
738 | aid_t async_send_fast(int phoneid, ipcarg_t method, ipcarg_t arg1, |
738 | aid_t async_send_fast(int phoneid, ipcarg_t method, ipcarg_t arg1, |
739 | ipcarg_t arg2, ipcarg_t arg3, ipcarg_t arg4, ipc_call_t *dataptr) |
739 | ipcarg_t arg2, ipcarg_t arg3, ipcarg_t arg4, ipc_call_t *dataptr) |
740 | { |
740 | { |
741 | amsg_t *msg; |
741 | amsg_t *msg; |
742 | 742 | ||
743 | if (_in_interrupt_handler) { |
743 | if (_in_interrupt_handler) { |
744 | printf("Cannot send asynchronous request in interrupt " |
744 | printf("Cannot send asynchronous request in interrupt " |
745 | "handler.\n"); |
745 | "handler.\n"); |
746 | _exit(1); |
746 | _exit(1); |
747 | } |
747 | } |
748 | 748 | ||
749 | msg = malloc(sizeof(*msg)); |
749 | msg = malloc(sizeof(*msg)); |
750 | msg->done = 0; |
750 | msg->done = 0; |
751 | msg->dataptr = dataptr; |
751 | msg->dataptr = dataptr; |
752 | 752 | ||
753 | /* We may sleep in the next method, but it will use its own mechanism */ |
753 | /* We may sleep in the next method, but it will use its own mechanism */ |
754 | msg->wdata.active = 1; |
754 | msg->wdata.active = 1; |
755 | 755 | ||
756 | ipc_call_async_4(phoneid, method, arg1, arg2, arg3, arg4, msg, |
756 | ipc_call_async_4(phoneid, method, arg1, arg2, arg3, arg4, msg, |
757 | reply_received, 1); |
757 | reply_received, 1); |
758 | 758 | ||
759 | return (aid_t) msg; |
759 | return (aid_t) msg; |
760 | } |
760 | } |
761 | 761 | ||
762 | /** Send message and return id of the sent message |
762 | /** Send message and return id of the sent message |
763 | * |
763 | * |
764 | * The return value can be used as input for async_wait() to wait for |
764 | * The return value can be used as input for async_wait() to wait for |
765 | * completion. |
765 | * completion. |
766 | * |
766 | * |
767 | * @param phoneid Handle of the phone that will be used for the send. |
767 | * @param phoneid Handle of the phone that will be used for the send. |
768 | * @param method Service-defined method. |
768 | * @param method Service-defined method. |
769 | * @param arg1 Service-defined payload argument. |
769 | * @param arg1 Service-defined payload argument. |
770 | * @param arg2 Service-defined payload argument. |
770 | * @param arg2 Service-defined payload argument. |
771 | * @param arg3 Service-defined payload argument. |
771 | * @param arg3 Service-defined payload argument. |
772 | * @param arg4 Service-defined payload argument. |
772 | * @param arg4 Service-defined payload argument. |
773 | * @param arg5 Service-defined payload argument. |
773 | * @param arg5 Service-defined payload argument. |
774 | * @param dataptr If non-NULL, storage where the reply data will be |
774 | * @param dataptr If non-NULL, storage where the reply data will be |
775 | * stored. |
775 | * stored. |
776 | * |
776 | * |
777 | * @return Hash of the sent message. |
777 | * @return Hash of the sent message. |
778 | */ |
778 | */ |
779 | aid_t async_send_slow(int phoneid, ipcarg_t method, ipcarg_t arg1, |
779 | aid_t async_send_slow(int phoneid, ipcarg_t method, ipcarg_t arg1, |
780 | ipcarg_t arg2, ipcarg_t arg3, ipcarg_t arg4, ipcarg_t arg5, |
780 | ipcarg_t arg2, ipcarg_t arg3, ipcarg_t arg4, ipcarg_t arg5, |
781 | ipc_call_t *dataptr) |
781 | ipc_call_t *dataptr) |
782 | { |
782 | { |
783 | amsg_t *msg; |
783 | amsg_t *msg; |
784 | 784 | ||
785 | if (_in_interrupt_handler) { |
785 | if (_in_interrupt_handler) { |
786 | printf("Cannot send asynchronous request in interrupt " |
786 | printf("Cannot send asynchronous request in interrupt " |
787 | "handler.\n"); |
787 | "handler.\n"); |
788 | _exit(1); |
788 | _exit(1); |
789 | } |
789 | } |
790 | 790 | ||
791 | msg = malloc(sizeof(*msg)); |
791 | msg = malloc(sizeof(*msg)); |
792 | msg->done = 0; |
792 | msg->done = 0; |
793 | msg->dataptr = dataptr; |
793 | msg->dataptr = dataptr; |
794 | 794 | ||
795 | /* We may sleep in next method, but it will use its own mechanism */ |
795 | /* We may sleep in next method, but it will use its own mechanism */ |
796 | msg->wdata.active = 1; |
796 | msg->wdata.active = 1; |
797 | 797 | ||
798 | ipc_call_async_5(phoneid, method, arg1, arg2, arg3, arg4, arg5, msg, |
798 | ipc_call_async_5(phoneid, method, arg1, arg2, arg3, arg4, arg5, msg, |
799 | reply_received, 1); |
799 | reply_received, 1); |
800 | 800 | ||
801 | return (aid_t) msg; |
801 | return (aid_t) msg; |
802 | } |
802 | } |
803 | 803 | ||
804 | /** Wait for a message sent by the async framework. |
804 | /** Wait for a message sent by the async framework. |
805 | * |
805 | * |
806 | * @param amsgid Hash of the message to wait for. |
806 | * @param amsgid Hash of the message to wait for. |
807 | * @param retval Pointer to storage where the retval of the answer will |
807 | * @param retval Pointer to storage where the retval of the answer will |
808 | * be stored. |
808 | * be stored. |
809 | */ |
809 | */ |
810 | void async_wait_for(aid_t amsgid, ipcarg_t *retval) |
810 | void async_wait_for(aid_t amsgid, ipcarg_t *retval) |
811 | { |
811 | { |
812 | amsg_t *msg = (amsg_t *) amsgid; |
812 | amsg_t *msg = (amsg_t *) amsgid; |
813 | 813 | ||
814 | futex_down(&async_futex); |
814 | futex_down(&async_futex); |
815 | if (msg->done) { |
815 | if (msg->done) { |
816 | futex_up(&async_futex); |
816 | futex_up(&async_futex); |
817 | goto done; |
817 | goto done; |
818 | } |
818 | } |
819 | 819 | ||
820 | msg->wdata.fid = fibril_get_id(); |
820 | msg->wdata.fid = fibril_get_id(); |
821 | msg->wdata.active = 0; |
821 | msg->wdata.active = 0; |
822 | msg->wdata.inlist = 0; |
822 | msg->wdata.inlist = 0; |
823 | /* Leave the async_futex locked when entering this function */ |
823 | /* Leave the async_futex locked when entering this function */ |
824 | fibril_switch(FIBRIL_TO_MANAGER); |
824 | fibril_switch(FIBRIL_TO_MANAGER); |
825 | /* futex is up automatically after fibril_switch...*/ |
825 | /* futex is up automatically after fibril_switch...*/ |
826 | done: |
826 | done: |
827 | if (retval) |
827 | if (retval) |
828 | *retval = msg->retval; |
828 | *retval = msg->retval; |
829 | free(msg); |
829 | free(msg); |
830 | } |
830 | } |
831 | 831 | ||
832 | /** Wait for a message sent by the async framework, timeout variant. |
832 | /** Wait for a message sent by the async framework, timeout variant. |
833 | * |
833 | * |
834 | * @param amsgid Hash of the message to wait for. |
834 | * @param amsgid Hash of the message to wait for. |
835 | * @param retval Pointer to storage where the retval of the answer will |
835 | * @param retval Pointer to storage where the retval of the answer will |
836 | * be stored. |
836 | * be stored. |
837 | * @param timeout Timeout in microseconds. |
837 | * @param timeout Timeout in microseconds. |
838 | * |
838 | * |
839 | * @return Zero on success, ETIMEOUT if the timeout has expired. |
839 | * @return Zero on success, ETIMEOUT if the timeout has expired. |
840 | */ |
840 | */ |
841 | int async_wait_timeout(aid_t amsgid, ipcarg_t *retval, suseconds_t timeout) |
841 | int async_wait_timeout(aid_t amsgid, ipcarg_t *retval, suseconds_t timeout) |
842 | { |
842 | { |
843 | amsg_t *msg = (amsg_t *) amsgid; |
843 | amsg_t *msg = (amsg_t *) amsgid; |
844 | 844 | ||
845 | /* TODO: Let it go through the event read at least once */ |
845 | /* TODO: Let it go through the event read at least once */ |
846 | if (timeout < 0) |
846 | if (timeout < 0) |
847 | return ETIMEOUT; |
847 | return ETIMEOUT; |
848 | 848 | ||
849 | futex_down(&async_futex); |
849 | futex_down(&async_futex); |
850 | if (msg->done) { |
850 | if (msg->done) { |
851 | futex_up(&async_futex); |
851 | futex_up(&async_futex); |
852 | goto done; |
852 | goto done; |
853 | } |
853 | } |
854 | 854 | ||
855 | gettimeofday(&msg->wdata.expires, NULL); |
855 | gettimeofday(&msg->wdata.expires, NULL); |
856 | tv_add(&msg->wdata.expires, timeout); |
856 | tv_add(&msg->wdata.expires, timeout); |
857 | 857 | ||
858 | msg->wdata.fid = fibril_get_id(); |
858 | msg->wdata.fid = fibril_get_id(); |
859 | msg->wdata.active = 0; |
859 | msg->wdata.active = 0; |
860 | insert_timeout(&msg->wdata); |
860 | insert_timeout(&msg->wdata); |
861 | 861 | ||
862 | /* Leave the async_futex locked when entering this function */ |
862 | /* Leave the async_futex locked when entering this function */ |
863 | fibril_switch(FIBRIL_TO_MANAGER); |
863 | fibril_switch(FIBRIL_TO_MANAGER); |
864 | /* futex is up automatically after fibril_switch...*/ |
864 | /* futex is up automatically after fibril_switch...*/ |
865 | 865 | ||
866 | if (!msg->done) |
866 | if (!msg->done) |
867 | return ETIMEOUT; |
867 | return ETIMEOUT; |
868 | 868 | ||
869 | done: |
869 | done: |
870 | if (retval) |
870 | if (retval) |
871 | *retval = msg->retval; |
871 | *retval = msg->retval; |
872 | free(msg); |
872 | free(msg); |
873 | 873 | ||
874 | return 0; |
874 | return 0; |
875 | } |
875 | } |
876 | 876 | ||
877 | /** Wait for specified time. |
877 | /** Wait for specified time. |
878 | * |
878 | * |
879 | * The current fibril is suspended but the thread continues to execute. |
879 | * The current fibril is suspended but the thread continues to execute. |
880 | * |
880 | * |
881 | * @param timeout Duration of the wait in microseconds. |
881 | * @param timeout Duration of the wait in microseconds. |
882 | */ |
882 | */ |
883 | void async_usleep(suseconds_t timeout) |
883 | void async_usleep(suseconds_t timeout) |
884 | { |
884 | { |
885 | amsg_t *msg; |
885 | amsg_t *msg; |
886 | 886 | ||
887 | if (_in_interrupt_handler) { |
887 | if (_in_interrupt_handler) { |
888 | printf("Cannot call async_usleep in interrupt handler.\n"); |
888 | printf("Cannot call async_usleep in interrupt handler.\n"); |
889 | _exit(1); |
889 | _exit(1); |
890 | } |
890 | } |
891 | 891 | ||
892 | msg = malloc(sizeof(*msg)); |
892 | msg = malloc(sizeof(*msg)); |
893 | if (!msg) |
893 | if (!msg) |
894 | return; |
894 | return; |
895 | 895 | ||
896 | msg->wdata.fid = fibril_get_id(); |
896 | msg->wdata.fid = fibril_get_id(); |
897 | msg->wdata.active = 0; |
897 | msg->wdata.active = 0; |
898 | 898 | ||
899 | gettimeofday(&msg->wdata.expires, NULL); |
899 | gettimeofday(&msg->wdata.expires, NULL); |
900 | tv_add(&msg->wdata.expires, timeout); |
900 | tv_add(&msg->wdata.expires, timeout); |
901 | 901 | ||
902 | futex_down(&async_futex); |
902 | futex_down(&async_futex); |
903 | insert_timeout(&msg->wdata); |
903 | insert_timeout(&msg->wdata); |
904 | /* Leave the async_futex locked when entering this function */ |
904 | /* Leave the async_futex locked when entering this function */ |
905 | fibril_switch(FIBRIL_TO_MANAGER); |
905 | fibril_switch(FIBRIL_TO_MANAGER); |
906 | /* futex is up automatically after fibril_switch()...*/ |
906 | /* futex is up automatically after fibril_switch()...*/ |
907 | free(msg); |
907 | free(msg); |
908 | } |
908 | } |
909 | 909 | ||
910 | /** Setter for client_connection function pointer. |
910 | /** Setter for client_connection function pointer. |
911 | * |
911 | * |
912 | * @param conn Function that will implement a new connection fibril. |
912 | * @param conn Function that will implement a new connection fibril. |
913 | */ |
913 | */ |
914 | void async_set_client_connection(async_client_conn_t conn) |
914 | void async_set_client_connection(async_client_conn_t conn) |
915 | { |
915 | { |
916 | client_connection = conn; |
916 | client_connection = conn; |
917 | } |
917 | } |
918 | 918 | ||
919 | /** Setter for interrupt_received function pointer. |
919 | /** Setter for interrupt_received function pointer. |
920 | * |
920 | * |
921 | * @param conn Function that will implement a new interrupt |
921 | * @param conn Function that will implement a new interrupt |
922 | * notification fibril. |
922 | * notification fibril. |
923 | */ |
923 | */ |
924 | void async_set_interrupt_received(async_client_conn_t conn) |
924 | void async_set_interrupt_received(async_client_conn_t conn) |
925 | { |
925 | { |
926 | interrupt_received = conn; |
926 | interrupt_received = conn; |
927 | } |
927 | } |
928 | 928 | ||
929 | /** Pseudo-synchronous message sending - fast version. |
929 | /** Pseudo-synchronous message sending - fast version. |
930 | * |
930 | * |
931 | * Send message asynchronously and return only after the reply arrives. |
931 | * Send message asynchronously and return only after the reply arrives. |
932 | * |
932 | * |
933 | * This function can only transfer 4 register payload arguments. For |
933 | * This function can only transfer 4 register payload arguments. For |
934 | * transferring more arguments, see the slower async_req_slow(). |
934 | * transferring more arguments, see the slower async_req_slow(). |
935 | * |
935 | * |
936 | * @param phoneid Hash of the phone through which to make the call. |
936 | * @param phoneid Hash of the phone through which to make the call. |
937 | * @param method Method of the call. |
937 | * @param method Method of the call. |
938 | * @param arg1 Service-defined payload argument. |
938 | * @param arg1 Service-defined payload argument. |
939 | * @param arg2 Service-defined payload argument. |
939 | * @param arg2 Service-defined payload argument. |
940 | * @param arg3 Service-defined payload argument. |
940 | * @param arg3 Service-defined payload argument. |
941 | * @param arg4 Service-defined payload argument. |
941 | * @param arg4 Service-defined payload argument. |
942 | * @param r1 If non-NULL, storage for the 1st reply argument. |
942 | * @param r1 If non-NULL, storage for the 1st reply argument. |
943 | * @param r2 If non-NULL, storage for the 2nd reply argument. |
943 | * @param r2 If non-NULL, storage for the 2nd reply argument. |
944 | * @param r3 If non-NULL, storage for the 3rd reply argument. |
944 | * @param r3 If non-NULL, storage for the 3rd reply argument. |
945 | * @param r4 If non-NULL, storage for the 4th reply argument. |
945 | * @param r4 If non-NULL, storage for the 4th reply argument. |
946 | * @param r5 If non-NULL, storage for the 5th reply argument. |
946 | * @param r5 If non-NULL, storage for the 5th reply argument. |
947 | * @return Return code of the reply or a negative error code. |
947 | * @return Return code of the reply or a negative error code. |
948 | */ |
948 | */ |
949 | ipcarg_t async_req_fast(int phoneid, ipcarg_t method, ipcarg_t arg1, |
949 | ipcarg_t async_req_fast(int phoneid, ipcarg_t method, ipcarg_t arg1, |
950 | ipcarg_t arg2, ipcarg_t arg3, ipcarg_t arg4, ipcarg_t *r1, ipcarg_t *r2, |
950 | ipcarg_t arg2, ipcarg_t arg3, ipcarg_t arg4, ipcarg_t *r1, ipcarg_t *r2, |
951 | ipcarg_t *r3, ipcarg_t *r4, ipcarg_t *r5) |
951 | ipcarg_t *r3, ipcarg_t *r4, ipcarg_t *r5) |
952 | { |
952 | { |
953 | ipc_call_t result; |
953 | ipc_call_t result; |
954 | ipcarg_t rc; |
954 | ipcarg_t rc; |
955 | 955 | ||
956 | aid_t eid = async_send_4(phoneid, method, arg1, arg2, arg3, arg4, |
956 | aid_t eid = async_send_4(phoneid, method, arg1, arg2, arg3, arg4, |
957 | &result); |
957 | &result); |
958 | async_wait_for(eid, &rc); |
958 | async_wait_for(eid, &rc); |
959 | if (r1) |
959 | if (r1) |
960 | *r1 = IPC_GET_ARG1(result); |
960 | *r1 = IPC_GET_ARG1(result); |
961 | if (r2) |
961 | if (r2) |
962 | *r2 = IPC_GET_ARG2(result); |
962 | *r2 = IPC_GET_ARG2(result); |
963 | if (r3) |
963 | if (r3) |
964 | *r3 = IPC_GET_ARG3(result); |
964 | *r3 = IPC_GET_ARG3(result); |
965 | if (r4) |
965 | if (r4) |
966 | *r4 = IPC_GET_ARG4(result); |
966 | *r4 = IPC_GET_ARG4(result); |
967 | if (r5) |
967 | if (r5) |
968 | *r5 = IPC_GET_ARG5(result); |
968 | *r5 = IPC_GET_ARG5(result); |
969 | return rc; |
969 | return rc; |
970 | } |
970 | } |
971 | 971 | ||
972 | /** Pseudo-synchronous message sending - slow version. |
972 | /** Pseudo-synchronous message sending - slow version. |
973 | * |
973 | * |
974 | * Send message asynchronously and return only after the reply arrives. |
974 | * Send message asynchronously and return only after the reply arrives. |
975 | * |
975 | * |
976 | * @param phoneid Hash of the phone through which to make the call. |
976 | * @param phoneid Hash of the phone through which to make the call. |
977 | * @param method Method of the call. |
977 | * @param method Method of the call. |
978 | * @param arg1 Service-defined payload argument. |
978 | * @param arg1 Service-defined payload argument. |
979 | * @param arg2 Service-defined payload argument. |
979 | * @param arg2 Service-defined payload argument. |
980 | * @param arg3 Service-defined payload argument. |
980 | * @param arg3 Service-defined payload argument. |
981 | * @param arg4 Service-defined payload argument. |
981 | * @param arg4 Service-defined payload argument. |
982 | * @param arg5 Service-defined payload argument. |
982 | * @param arg5 Service-defined payload argument. |
983 | * @param r1 If non-NULL, storage for the 1st reply argument. |
983 | * @param r1 If non-NULL, storage for the 1st reply argument. |
984 | * @param r2 If non-NULL, storage for the 2nd reply argument. |
984 | * @param r2 If non-NULL, storage for the 2nd reply argument. |
985 | * @param r3 If non-NULL, storage for the 3rd reply argument. |
985 | * @param r3 If non-NULL, storage for the 3rd reply argument. |
986 | * @param r4 If non-NULL, storage for the 4th reply argument. |
986 | * @param r4 If non-NULL, storage for the 4th reply argument. |
987 | * @param r5 If non-NULL, storage for the 5th reply argument. |
987 | * @param r5 If non-NULL, storage for the 5th reply argument. |
988 | * @return Return code of the reply or a negative error code. |
988 | * @return Return code of the reply or a negative error code. |
989 | */ |
989 | */ |
990 | ipcarg_t async_req_slow(int phoneid, ipcarg_t method, ipcarg_t arg1, |
990 | ipcarg_t async_req_slow(int phoneid, ipcarg_t method, ipcarg_t arg1, |
991 | ipcarg_t arg2, ipcarg_t arg3, ipcarg_t arg4, ipcarg_t arg5, ipcarg_t *r1, |
991 | ipcarg_t arg2, ipcarg_t arg3, ipcarg_t arg4, ipcarg_t arg5, ipcarg_t *r1, |
992 | ipcarg_t *r2, ipcarg_t *r3, ipcarg_t *r4, ipcarg_t *r5) |
992 | ipcarg_t *r2, ipcarg_t *r3, ipcarg_t *r4, ipcarg_t *r5) |
993 | { |
993 | { |
994 | ipc_call_t result; |
994 | ipc_call_t result; |
995 | ipcarg_t rc; |
995 | ipcarg_t rc; |
996 | 996 | ||
997 | aid_t eid = async_send_5(phoneid, method, arg1, arg2, arg3, arg4, arg5, |
997 | aid_t eid = async_send_5(phoneid, method, arg1, arg2, arg3, arg4, arg5, |
998 | &result); |
998 | &result); |
999 | async_wait_for(eid, &rc); |
999 | async_wait_for(eid, &rc); |
1000 | if (r1) |
1000 | if (r1) |
1001 | *r1 = IPC_GET_ARG1(result); |
1001 | *r1 = IPC_GET_ARG1(result); |
1002 | if (r2) |
1002 | if (r2) |
1003 | *r2 = IPC_GET_ARG2(result); |
1003 | *r2 = IPC_GET_ARG2(result); |
1004 | if (r3) |
1004 | if (r3) |
1005 | *r3 = IPC_GET_ARG3(result); |
1005 | *r3 = IPC_GET_ARG3(result); |
1006 | if (r4) |
1006 | if (r4) |
1007 | *r4 = IPC_GET_ARG4(result); |
1007 | *r4 = IPC_GET_ARG4(result); |
1008 | if (r5) |
1008 | if (r5) |
1009 | *r5 = IPC_GET_ARG5(result); |
1009 | *r5 = IPC_GET_ARG5(result); |
1010 | return rc; |
1010 | return rc; |
1011 | } |
1011 | } |
1012 | 1012 | ||
1013 | /** @} |
1013 | /** @} |
1014 | */ |
1014 | */ |
1015 | 1015 | ||
1016 | 1016 |