source: mainline/uspace/app/trace/ipcp.c@ 84683fdc

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 84683fdc was d9c8c81, checked in by Martin Decky <martin@…>, 16 years ago

rename libadt → adt
  • Property mode set to 100644
File size: 8.6 KB
Line 
1/*
2 * Copyright (c) 2008 Jiri Svoboda
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
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
15 * derived from this software without specific prior written permission.
16 *
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
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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
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
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup trace
30 * @{
31 */
32/** @file
33 */
34
35#include <stdio.h>
36#include <stdlib.h>
37#include <adt/hash_table.h>
38
39#include "ipc_desc.h"
40#include "proto.h"
41#include "trace.h"
42#include "ipcp.h"
43
44#define IPCP_CALLID_SYNC 0
45
46typedef struct {
47 ipcarg_t phone_hash;
48 ipc_call_t question;
49 oper_t *oper;
50
51 ipc_callid_t call_hash;
52
53 link_t link;
54} pending_call_t;
55
56typedef struct {
57 int server;
58 proto_t *proto;
59} connection_t;
60
61#define MAX_PHONE 64
62connection_t connections[MAX_PHONE];
63int have_conn[MAX_PHONE];
64
65#define PCALL_TABLE_CHAINS 32
66hash_table_t pending_calls;
67
68/*
69 * Pseudo-protocols
70 */
71proto_t *proto_system; /**< Protocol describing system IPC methods. */
72proto_t *proto_unknown; /**< Protocol with no known methods. */
73
74static hash_index_t pending_call_hash(unsigned long key[]);
75static int pending_call_compare(unsigned long key[], hash_count_t keys,
76 link_t *item);
77static void pending_call_remove_callback(link_t *item);
78
79hash_table_operations_t pending_call_ops = {
80 .hash = pending_call_hash,
81 .compare = pending_call_compare,
82 .remove_callback = pending_call_remove_callback
83};
84
85
86static hash_index_t pending_call_hash(unsigned long key[])
87{
88// printf("pending_call_hash\n");
89 return key[0] % PCALL_TABLE_CHAINS;
90}
91
92static int pending_call_compare(unsigned long key[], hash_count_t keys,
93 link_t *item)
94{
95 pending_call_t *hs;
96
97// printf("pending_call_compare\n");
98 hs = hash_table_get_instance(item, pending_call_t, link);
99
100 // FIXME: this will fail if sizeof(long) < sizeof(void *).
101 return key[0] == hs->call_hash;
102}
103
104static void pending_call_remove_callback(link_t *item)
105{
106// printf("pending_call_remove_callback\n");
107}
108
109
110void ipcp_connection_set(int phone, int server, proto_t *proto)
111{
112 if (phone <0 || phone >= MAX_PHONE) return;
113 connections[phone].server = server;
114 connections[phone].proto = proto;
115 have_conn[phone] = 1;
116}
117
118void ipcp_connection_clear(int phone)
119{
120 have_conn[phone] = 0;
121 connections[phone].server = 0;
122 connections[phone].proto = NULL;
123}
124
125static void ipc_m_print(proto_t *proto, ipcarg_t method)
126{
127 oper_t *oper;
128
129 /* Try system methods first */
130 oper = proto_get_oper(proto_system, method);
131
132 if (oper == NULL && proto != NULL) {
133 /* Not a system method, try the user protocol. */
134 oper = proto_get_oper(proto, method);
135 }
136
137 if (oper != NULL) {
138 printf("%s (%ld)", oper->name, method);
139 return;
140 }
141
142 printf("%ld", method);
143}
144
145void ipcp_init(void)
146{
147 ipc_m_desc_t *desc;
148 oper_t *oper;
149
150 val_type_t arg_def[OPER_MAX_ARGS] = {
151 V_INTEGER,
152 V_INTEGER,
153 V_INTEGER,
154 V_INTEGER,
155 V_INTEGER
156 };
157
158 /*
159 * Create a pseudo-protocol 'unknown' that has no known methods.
160 */
161 proto_unknown = proto_new("unknown");
162
163 /*
164 * Create a pseudo-protocol 'system' defining names of system IPC
165 * methods.
166 */
167 proto_system = proto_new("system");
168
169 desc = ipc_methods;
170 while (desc->number != 0) {
171 oper = oper_new(desc->name, OPER_MAX_ARGS, arg_def, V_INTEGER,
172 OPER_MAX_ARGS, arg_def);
173 proto_add_oper(proto_system, desc->number, oper);
174
175 ++desc;
176 }
177
178 hash_table_create(&pending_calls, PCALL_TABLE_CHAINS, 1, &pending_call_ops);
179}
180
181void ipcp_cleanup(void)
182{
183 proto_delete(proto_system);
184 hash_table_destroy(&pending_calls);
185}
186
187void ipcp_call_out(int phone, ipc_call_t *call, ipc_callid_t hash)
188{
189 pending_call_t *pcall;
190 proto_t *proto;
191 unsigned long key[1];
192 oper_t *oper;
193 ipcarg_t *args;
194 int i;
195
196 if (have_conn[phone]) proto = connections[phone].proto;
197 else proto = NULL;
198
199 args = call->args;
200
201 if ((display_mask & DM_IPC) != 0) {
202 printf("Call ID: 0x%lx, phone: %d, proto: %s, method: ", hash,
203 phone, (proto ? proto->name : "n/a"));
204 ipc_m_print(proto, IPC_GET_METHOD(*call));
205 printf(" args: (%lu, %lu, %lu, %lu, %lu)\n", args[1], args[2],
206 args[3], args[4], args[5]);
207 }
208
209
210 if ((display_mask & DM_USER) != 0) {
211
212 if (proto != NULL) {
213 oper = proto_get_oper(proto, IPC_GET_METHOD(*call));
214 } else {
215 oper = NULL;
216 }
217
218 if (oper != NULL) {
219
220 printf("%s(%d).%s", (proto ? proto->name : "n/a"),
221 phone, (oper ? oper->name : "unknown"));
222
223 putchar('(');
224 for (i = 1; i <= oper->argc; ++i) {
225 if (i > 1) printf(", ");
226 val_print(args[i], oper->arg_type[i - 1]);
227 }
228 putchar(')');
229
230 if (oper->rv_type == V_VOID && oper->respc == 0) {
231 /*
232 * No response data (typically the task will
233 * not be interested in the response).
234 * We will not display response.
235 */
236 putchar('.');
237 }
238
239 putchar('\n');
240 }
241 } else {
242 oper = NULL;
243 }
244
245 /* Store call in hash table for response matching */
246
247 pcall = malloc(sizeof(pending_call_t));
248 pcall->phone_hash = phone;
249 pcall->question = *call;
250 pcall->call_hash = hash;
251 pcall->oper = oper;
252
253 key[0] = hash;
254
255 hash_table_insert(&pending_calls, key, &pcall->link);
256}
257
258static void parse_answer(ipc_callid_t hash, pending_call_t *pcall,
259 ipc_call_t *answer)
260{
261 ipcarg_t phone;
262 ipcarg_t method;
263 ipcarg_t service;
264 ipcarg_t retval;
265 proto_t *proto;
266 int cphone;
267
268 ipcarg_t *resp;
269 oper_t *oper;
270 int i;
271
272// printf("parse_answer\n");
273
274 phone = pcall->phone_hash;
275 method = IPC_GET_METHOD(pcall->question);
276 retval = IPC_GET_RETVAL(*answer);
277
278 resp = answer->args;
279
280 if ((display_mask & DM_IPC) != 0) {
281 printf("Response to 0x%lx: retval=%ld, args = (%lu, %lu, %lu, %lu, %lu)\n",
282 hash, retval, IPC_GET_ARG1(*answer),
283 IPC_GET_ARG2(*answer), IPC_GET_ARG3(*answer),
284 IPC_GET_ARG4(*answer), IPC_GET_ARG5(*answer));
285 }
286
287 if ((display_mask & DM_USER) != 0) {
288 oper = pcall->oper;
289
290 if (oper != NULL && (oper->rv_type != V_VOID || oper->respc > 0)) {
291 printf("->");
292
293 if (oper->rv_type != V_VOID) {
294 putchar(' ');
295 val_print(retval, oper->rv_type);
296 }
297
298 if (oper->respc > 0) {
299 putchar(' ');
300 putchar('(');
301 for (i = 1; i <= oper->respc; ++i) {
302 if (i > 1) printf(", ");
303 val_print(resp[i], oper->resp_type[i - 1]);
304 }
305 putchar(')');
306 }
307
308 putchar('\n');
309 }
310 }
311
312 if (phone == 0 && method == IPC_M_CONNECT_ME_TO && retval == 0) {
313 /* Connected to a service (through NS) */
314 service = IPC_GET_ARG1(pcall->question);
315 proto = proto_get_by_srv(service);
316 if (proto == NULL) proto = proto_unknown;
317
318 cphone = IPC_GET_ARG5(*answer);
319 if ((display_mask & DM_SYSTEM) != 0) {
320 printf("Registering connection (phone %d, protocol: %s)\n", cphone,
321 proto->name);
322 }
323 ipcp_connection_set(cphone, 0, proto);
324 }
325}
326
327void ipcp_call_in(ipc_call_t *call, ipc_callid_t hash)
328{
329 link_t *item;
330 pending_call_t *pcall;
331 unsigned long key[1];
332
333// printf("ipcp_call_in()\n");
334
335 if ((hash & IPC_CALLID_ANSWERED) == 0 && hash != IPCP_CALLID_SYNC) {
336 /* Not a response */
337 if ((display_mask & DM_IPC) != 0) {
338 printf("Not a response (hash 0x%lx)\n", hash);
339 }
340 return;
341 }
342
343 hash = hash & ~IPC_CALLID_ANSWERED;
344 key[0] = hash;
345
346 item = hash_table_find(&pending_calls, key);
347 if (item == NULL) return; // No matching question found
348
349 /*
350 * Response matched to question.
351 */
352
353 pcall = hash_table_get_instance(item, pending_call_t, link);
354 hash_table_remove(&pending_calls, key, 1);
355
356 parse_answer(hash, pcall, call);
357 free(pcall);
358}
359
360void ipcp_call_sync(int phone, ipc_call_t *call, ipc_call_t *answer)
361{
362 ipcp_call_out(phone, call, IPCP_CALLID_SYNC);
363 ipcp_call_in(answer, IPCP_CALLID_SYNC);
364}
365
366void ipcp_hangup(int phone, int rc)
367{
368 if ((display_mask & DM_SYSTEM) != 0) {
369 printf("Hang phone %d up -> %d\n", phone, rc);
370 ipcp_connection_clear(phone);
371 }
372}
373
374/** @}
375 */
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