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Commit | Line | Data |
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a1bb33af UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
c73d2ea4 | 4 | * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> |
a1bb33af UH |
5 | * |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <unistd.h> | |
23 | #include <string.h> | |
544a4582 | 24 | #include <glib.h> |
45c59c8b BV |
25 | #include "libsigrok.h" |
26 | #include "libsigrok-internal.h" | |
aa4b1107 | 27 | |
393fb9cb UH |
28 | /** |
29 | * @file | |
30 | * | |
31 | * Creating, using, or destroying libsigrok sessions. | |
32 | */ | |
33 | ||
7b870c38 UH |
34 | /** |
35 | * @defgroup grp_session Session handling | |
36 | * | |
37 | * Creating, using, or destroying libsigrok sessions. | |
38 | * | |
39 | * @{ | |
40 | */ | |
41 | ||
544a4582 | 42 | struct source { |
544a4582 | 43 | int timeout; |
d08490aa | 44 | sr_receive_data_callback_t cb; |
1f9813eb | 45 | void *cb_data; |
aac0ea25 LPC |
46 | |
47 | /* This is used to keep track of the object (fd, pollfd or channel) which is | |
48 | * being polled and will be used to match the source when removing it again. | |
49 | */ | |
50 | gintptr poll_object; | |
544a4582 BV |
51 | }; |
52 | ||
7d658874 | 53 | /* There can only be one session at a time. */ |
a0ecd83b | 54 | /* 'session' is not static, it's used elsewhere (via 'extern'). */ |
2872d21e | 55 | struct sr_session *session; |
544a4582 | 56 | |
9f45fb3a UH |
57 | /** |
58 | * Create a new session. | |
59 | * | |
6b2d8d3e | 60 | * @todo Should it use the file-global "session" variable or take an argument? |
9f45fb3a UH |
61 | * The same question applies to all the other session functions. |
62 | * | |
63 | * @return A pointer to the newly allocated session, or NULL upon errors. | |
64 | */ | |
1a081ca6 | 65 | SR_API struct sr_session *sr_session_new(void) |
a1bb33af | 66 | { |
133a37bf | 67 | if (!(session = g_try_malloc0(sizeof(struct sr_session)))) { |
9f45fb3a UH |
68 | sr_err("session: %s: session malloc failed", __func__); |
69 | return NULL; /* TODO: SR_ERR_MALLOC? */ | |
70 | } | |
a1bb33af | 71 | |
b7e94111 LPC |
72 | session->source_timeout = -1; |
73 | ||
a1bb33af UH |
74 | return session; |
75 | } | |
76 | ||
9f45fb3a UH |
77 | /** |
78 | * Destroy the current session. | |
79 | * | |
80 | * This frees up all memory used by the session. | |
81 | * | |
e0508e67 | 82 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 83 | */ |
1a081ca6 | 84 | SR_API int sr_session_destroy(void) |
a1bb33af | 85 | { |
9f45fb3a | 86 | if (!session) { |
133a37bf | 87 | sr_err("session: %s: session was NULL", __func__); |
e0508e67 | 88 | return SR_ERR_BUG; |
9f45fb3a UH |
89 | } |
90 | ||
ed229aaa | 91 | sr_session_dev_remove_all(); |
a1bb33af | 92 | |
9f45fb3a UH |
93 | /* TODO: Error checks needed? */ |
94 | ||
a1bb33af | 95 | g_free(session); |
9f45fb3a | 96 | session = NULL; |
e0508e67 UH |
97 | |
98 | return SR_OK; | |
a1bb33af UH |
99 | } |
100 | ||
de4d3f99 | 101 | static void sr_dev_close(struct sr_dev_inst *sdi) |
ed229aaa | 102 | { |
e8d3d6c8 | 103 | if (sdi->driver && sdi->driver->dev_close) |
de4d3f99 | 104 | sdi->driver->dev_close(sdi); |
ed229aaa LPC |
105 | } |
106 | ||
9f45fb3a | 107 | /** |
6b2d8d3e | 108 | * Remove all the devices from the current session. |
9f45fb3a UH |
109 | * |
110 | * The session itself (i.e., the struct sr_session) is not free'd and still | |
111 | * exists after this function returns. | |
112 | * | |
e0508e67 | 113 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 114 | */ |
01c3e9db | 115 | SR_API int sr_session_dev_remove_all(void) |
a1bb33af | 116 | { |
9f45fb3a | 117 | if (!session) { |
133a37bf | 118 | sr_err("session: %s: session was NULL", __func__); |
e0508e67 | 119 | return SR_ERR_BUG; |
9f45fb3a UH |
120 | } |
121 | ||
ed229aaa | 122 | g_slist_free_full(session->devs, (GDestroyNotify)sr_dev_close); |
bb7ef793 | 123 | session->devs = NULL; |
e0508e67 UH |
124 | |
125 | return SR_OK; | |
a1bb33af UH |
126 | } |
127 | ||
9f45fb3a | 128 | /** |
9c5332d2 | 129 | * Add a device instance to the current session. |
9f45fb3a | 130 | * |
9c5332d2 | 131 | * @param sdi The device instance to add to the current session. Must not |
de4d3f99 BV |
132 | * be NULL. Also, sdi->driver and sdi->driver->dev_open must |
133 | * not be NULL. | |
9f45fb3a UH |
134 | * |
135 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. | |
136 | */ | |
de4d3f99 | 137 | SR_API int sr_session_dev_add(const struct sr_dev_inst *sdi) |
a1bb33af UH |
138 | { |
139 | int ret; | |
140 | ||
de4d3f99 BV |
141 | if (!sdi) { |
142 | sr_err("session: %s: sdi was NULL", __func__); | |
9f45fb3a UH |
143 | return SR_ERR_ARG; |
144 | } | |
145 | ||
d6eb0c33 UH |
146 | if (!session) { |
147 | sr_err("session: %s: session was NULL", __func__); | |
148 | return SR_ERR_BUG; | |
149 | } | |
150 | ||
de4d3f99 BV |
151 | /* If sdi->driver is NULL, this is a virtual device. */ |
152 | if (!sdi->driver) { | |
153 | sr_dbg("session: %s: sdi->driver was NULL, this seems to be " | |
d6eb0c33 UH |
154 | "a virtual device; continuing", __func__); |
155 | /* Just add the device, don't run dev_open(). */ | |
de4d3f99 | 156 | session->devs = g_slist_append(session->devs, (gpointer)sdi); |
d6eb0c33 | 157 | return SR_OK; |
9f45fb3a UH |
158 | } |
159 | ||
de4d3f99 BV |
160 | /* sdi->driver is non-NULL (i.e. we have a real device). */ |
161 | if (!sdi->driver->dev_open) { | |
162 | sr_err("session: %s: sdi->driver->dev_open was NULL", __func__); | |
8ec95d22 | 163 | return SR_ERR_BUG; |
9f45fb3a UH |
164 | } |
165 | ||
de4d3f99 | 166 | if ((ret = sdi->driver->dev_open((struct sr_dev_inst *)sdi)) != SR_OK) { |
e7eb703f | 167 | sr_err("session: %s: dev_open failed (%d)", __func__, ret); |
9f45fb3a | 168 | return ret; |
aa4b1107 | 169 | } |
a1bb33af | 170 | |
de4d3f99 | 171 | session->devs = g_slist_append(session->devs, (gpointer)sdi); |
aa4b1107 | 172 | |
e46b8fb1 | 173 | return SR_OK; |
a1bb33af UH |
174 | } |
175 | ||
9f45fb3a | 176 | /** |
01c3e9db | 177 | * Remove all datafeed callbacks in the current session. |
9f45fb3a | 178 | * |
e0508e67 | 179 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 180 | */ |
01c3e9db | 181 | SR_API int sr_session_datafeed_callback_remove_all(void) |
a1bb33af | 182 | { |
9f45fb3a UH |
183 | if (!session) { |
184 | sr_err("session: %s: session was NULL", __func__); | |
e0508e67 | 185 | return SR_ERR_BUG; |
9f45fb3a UH |
186 | } |
187 | ||
a1bb33af UH |
188 | g_slist_free(session->datafeed_callbacks); |
189 | session->datafeed_callbacks = NULL; | |
e0508e67 UH |
190 | |
191 | return SR_OK; | |
a1bb33af UH |
192 | } |
193 | ||
9f45fb3a UH |
194 | /** |
195 | * Add a datafeed callback to the current session. | |
196 | * | |
d08490aa | 197 | * @param cb Function to call when a chunk of data is received. |
0abee507 | 198 | * Must not be NULL. |
a1645fcd | 199 | * |
e0508e67 | 200 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 201 | */ |
d08490aa | 202 | SR_API int sr_session_datafeed_callback_add(sr_datafeed_callback_t cb) |
a1bb33af | 203 | { |
9f45fb3a UH |
204 | if (!session) { |
205 | sr_err("session: %s: session was NULL", __func__); | |
e0508e67 | 206 | return SR_ERR_BUG; |
9f45fb3a UH |
207 | } |
208 | ||
0abee507 UH |
209 | if (!cb) { |
210 | sr_err("session: %s: cb was NULL", __func__); | |
211 | return SR_ERR_ARG; | |
212 | } | |
9f45fb3a | 213 | |
62c82025 | 214 | session->datafeed_callbacks = |
d08490aa | 215 | g_slist_append(session->datafeed_callbacks, cb); |
e0508e67 UH |
216 | |
217 | return SR_OK; | |
a1bb33af UH |
218 | } |
219 | ||
e0508e67 | 220 | static int sr_session_run_poll(void) |
544a4582 | 221 | { |
b7e94111 LPC |
222 | unsigned int i; |
223 | int ret; | |
544a4582 | 224 | |
2cbeb2b7 BV |
225 | while (session->num_sources > 0) { |
226 | ret = g_poll(session->pollfds, session->num_sources, | |
227 | session->source_timeout); | |
b7e94111 LPC |
228 | for (i = 0; i < session->num_sources; i++) { |
229 | if (session->pollfds[i].revents > 0 || (ret == 0 | |
230 | && session->source_timeout == session->sources[i].timeout)) { | |
544a4582 BV |
231 | /* |
232 | * Invoke the source's callback on an event, | |
2cbeb2b7 | 233 | * or if the poll timed out and this source |
544a4582 BV |
234 | * asked for that timeout. |
235 | */ | |
2cbeb2b7 BV |
236 | if (!session->sources[i].cb(session->pollfds[i].fd, |
237 | session->pollfds[i].revents, | |
238 | session->sources[i].cb_data)) | |
b7e94111 | 239 | sr_session_source_remove(session->sources[i].poll_object); |
544a4582 BV |
240 | } |
241 | } | |
242 | } | |
e0508e67 UH |
243 | |
244 | return SR_OK; | |
544a4582 BV |
245 | } |
246 | ||
9f45fb3a UH |
247 | /** |
248 | * Start a session. | |
249 | * | |
a1645fcd | 250 | * There can only be one session at a time. |
9f45fb3a UH |
251 | * |
252 | * @return SR_OK upon success, SR_ERR upon errors. | |
253 | */ | |
1a081ca6 | 254 | SR_API int sr_session_start(void) |
7d658874 | 255 | { |
de4d3f99 | 256 | struct sr_dev_inst *sdi; |
7d658874 BV |
257 | GSList *l; |
258 | int ret; | |
259 | ||
9f45fb3a UH |
260 | if (!session) { |
261 | sr_err("session: %s: session was NULL; a session must be " | |
de4d3f99 | 262 | "created before starting it.", __func__); |
0abee507 | 263 | return SR_ERR_BUG; |
9f45fb3a UH |
264 | } |
265 | ||
bb7ef793 | 266 | if (!session->devs) { |
bb7ef793 | 267 | sr_err("session: %s: session->devs was NULL; a session " |
9f45fb3a | 268 | "cannot be started without devices.", __func__); |
0abee507 | 269 | return SR_ERR_BUG; |
9f45fb3a UH |
270 | } |
271 | ||
b08024a8 | 272 | sr_info("session: starting"); |
9f45fb3a | 273 | |
bb7ef793 | 274 | for (l = session->devs; l; l = l->next) { |
de4d3f99 BV |
275 | sdi = l->data; |
276 | if ((ret = sdi->driver->dev_acquisition_start(sdi, sdi)) != SR_OK) { | |
446a0372 | 277 | sr_err("session: %s: could not start an acquisition " |
9f45fb3a | 278 | "(%d)", __func__, ret); |
7d658874 | 279 | break; |
9f45fb3a | 280 | } |
7d658874 BV |
281 | } |
282 | ||
9f45fb3a UH |
283 | /* TODO: What if there are multiple devices? Which return code? */ |
284 | ||
7d658874 BV |
285 | return ret; |
286 | } | |
287 | ||
9f45fb3a UH |
288 | /** |
289 | * Run the session. | |
290 | * | |
e0508e67 | 291 | * @return SR_OK upon success, SR_ERR_BUG upon errors. |
9f45fb3a | 292 | */ |
1a081ca6 | 293 | SR_API int sr_session_run(void) |
7d658874 | 294 | { |
9f45fb3a UH |
295 | if (!session) { |
296 | sr_err("session: %s: session was NULL; a session must be " | |
297 | "created first, before running it.", __func__); | |
e0508e67 | 298 | return SR_ERR_BUG; |
9f45fb3a UH |
299 | } |
300 | ||
bb7ef793 | 301 | if (!session->devs) { |
9f45fb3a | 302 | /* TODO: Actually the case? */ |
bb7ef793 | 303 | sr_err("session: %s: session->devs was NULL; a session " |
9f45fb3a | 304 | "cannot be run without devices.", __func__); |
e0508e67 | 305 | return SR_ERR_BUG; |
9f45fb3a UH |
306 | } |
307 | ||
b08024a8 | 308 | sr_info("session: running"); |
7d658874 | 309 | |
9f45fb3a | 310 | /* Do we have real sources? */ |
b7e94111 | 311 | if (session->num_sources == 1 && session->pollfds[0].fd == -1) { |
9f45fb3a | 312 | /* Dummy source, freewheel over it. */ |
2cbeb2b7 | 313 | while (session->num_sources) |
b7e94111 | 314 | session->sources[0].cb(-1, 0, session->sources[0].cb_data); |
9f45fb3a UH |
315 | } else { |
316 | /* Real sources, use g_poll() main loop. */ | |
8a2efef2 | 317 | sr_session_run_poll(); |
9f45fb3a UH |
318 | } |
319 | ||
e0508e67 | 320 | return SR_OK; |
7d658874 BV |
321 | } |
322 | ||
9f45fb3a UH |
323 | /** |
324 | * Halt the current session. | |
325 | * | |
9ffbde0e LPC |
326 | * This function is deprecated and should not be used in new code, use |
327 | * sr_session_stop() instead. The behaviour of this function is identical to | |
328 | * sr_session_stop(). | |
e0508e67 UH |
329 | * |
330 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. | |
9f45fb3a | 331 | */ |
1a081ca6 | 332 | SR_API int sr_session_halt(void) |
544a4582 | 333 | { |
9ffbde0e | 334 | return sr_session_stop(); |
544a4582 BV |
335 | } |
336 | ||
9f45fb3a UH |
337 | /** |
338 | * Stop the current session. | |
339 | * | |
a1645fcd | 340 | * The current session is stopped immediately, with all acquisition sessions |
c09f0b57 | 341 | * being stopped and hardware drivers cleaned up. |
9f45fb3a | 342 | * |
e0508e67 | 343 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 344 | */ |
1a081ca6 | 345 | SR_API int sr_session_stop(void) |
a1bb33af | 346 | { |
de4d3f99 | 347 | struct sr_dev_inst *sdi; |
a1bb33af UH |
348 | GSList *l; |
349 | ||
9f45fb3a UH |
350 | if (!session) { |
351 | sr_err("session: %s: session was NULL", __func__); | |
e0508e67 | 352 | return SR_ERR_BUG; |
9f45fb3a UH |
353 | } |
354 | ||
b08024a8 | 355 | sr_info("session: stopping"); |
e0508e67 | 356 | |
bb7ef793 | 357 | for (l = session->devs; l; l = l->next) { |
de4d3f99 BV |
358 | sdi = l->data; |
359 | if (sdi->driver) { | |
360 | if (sdi->driver->dev_acquisition_stop) | |
361 | sdi->driver->dev_acquisition_stop(sdi, sdi); | |
8c76be53 | 362 | } |
a1bb33af | 363 | } |
9f45fb3a | 364 | |
e0508e67 | 365 | return SR_OK; |
a1bb33af UH |
366 | } |
367 | ||
9f45fb3a | 368 | /** |
a1645fcd | 369 | * Debug helper. |
9f45fb3a | 370 | * |
996b0c72 | 371 | * @param packet The packet to show debugging information for. |
9f45fb3a | 372 | */ |
18beaeff | 373 | static void datafeed_dump(struct sr_datafeed_packet *packet) |
7d2afd6c BV |
374 | { |
375 | struct sr_datafeed_logic *logic; | |
ee7489d2 | 376 | struct sr_datafeed_analog *analog; |
7d2afd6c BV |
377 | |
378 | switch (packet->type) { | |
379 | case SR_DF_HEADER: | |
380 | sr_dbg("bus: received SR_DF_HEADER"); | |
381 | break; | |
382 | case SR_DF_TRIGGER: | |
01469707 | 383 | sr_dbg("bus: received SR_DF_TRIGGER"); |
7d2afd6c | 384 | break; |
ee7489d2 BV |
385 | case SR_DF_META_LOGIC: |
386 | sr_dbg("bus: received SR_DF_META_LOGIC"); | |
387 | break; | |
7d2afd6c BV |
388 | case SR_DF_LOGIC: |
389 | logic = packet->payload; | |
e0508e67 | 390 | /* TODO: Check for logic != NULL. */ |
01469707 | 391 | sr_dbg("bus: received SR_DF_LOGIC %" PRIu64 " bytes", logic->length); |
7d2afd6c | 392 | break; |
ee7489d2 | 393 | case SR_DF_META_ANALOG: |
dfd8f56e | 394 | sr_dbg("bus: received SR_DF_META_ANALOG"); |
ee7489d2 BV |
395 | break; |
396 | case SR_DF_ANALOG: | |
397 | analog = packet->payload; | |
398 | /* TODO: Check for analog != NULL. */ | |
399 | sr_dbg("bus: received SR_DF_ANALOG %d samples", analog->num_samples); | |
400 | break; | |
7d2afd6c BV |
401 | case SR_DF_END: |
402 | sr_dbg("bus: received SR_DF_END"); | |
403 | break; | |
6ea7669c BV |
404 | case SR_DF_FRAME_BEGIN: |
405 | sr_dbg("bus: received SR_DF_FRAME_BEGIN"); | |
406 | break; | |
407 | case SR_DF_FRAME_END: | |
408 | sr_dbg("bus: received SR_DF_FRAME_END"); | |
409 | break; | |
7d2afd6c | 410 | default: |
18beaeff | 411 | sr_dbg("bus: received unknown packet type %d", packet->type); |
9f45fb3a | 412 | break; |
7d2afd6c | 413 | } |
7d2afd6c BV |
414 | } |
415 | ||
9f45fb3a | 416 | /** |
a1645fcd BV |
417 | * Send a packet to whatever is listening on the datafeed bus. |
418 | * | |
419 | * Hardware drivers use this to send a data packet to the frontend. | |
9f45fb3a | 420 | * |
6b2d8d3e | 421 | * @param sdi TODO. |
31ccebc4 | 422 | * @param packet The datafeed packet to send to the session bus. |
44dae539 | 423 | * |
e0508e67 | 424 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. |
b4bd7088 UH |
425 | * |
426 | * @private | |
9f45fb3a | 427 | */ |
de4d3f99 | 428 | SR_PRIV int sr_session_send(const struct sr_dev_inst *sdi, |
31ccebc4 | 429 | struct sr_datafeed_packet *packet) |
a1bb33af UH |
430 | { |
431 | GSList *l; | |
d08490aa | 432 | sr_datafeed_callback_t cb; |
a1bb33af | 433 | |
de4d3f99 BV |
434 | if (!sdi) { |
435 | sr_err("session: %s: sdi was NULL", __func__); | |
e0508e67 | 436 | return SR_ERR_ARG; |
9f45fb3a UH |
437 | } |
438 | ||
e0508e67 UH |
439 | if (!packet) { |
440 | sr_err("session: %s: packet was NULL", __func__); | |
441 | return SR_ERR_ARG; | |
9f45fb3a UH |
442 | } |
443 | ||
62c82025 | 444 | for (l = session->datafeed_callbacks; l; l = l->next) { |
18beaeff BV |
445 | if (sr_log_loglevel_get() >= SR_LOG_DBG) |
446 | datafeed_dump(packet); | |
a1bb33af | 447 | cb = l->data; |
de4d3f99 | 448 | cb(sdi, packet); |
a1bb33af | 449 | } |
9f45fb3a | 450 | |
e0508e67 | 451 | return SR_OK; |
a1bb33af UH |
452 | } |
453 | ||
6b2d8d3e UH |
454 | /** |
455 | * Add an event source for a file descriptor. | |
456 | * | |
457 | * @param pollfd The GPollFD. | |
458 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
459 | * @param cb Callback function to add. Must not be NULL. | |
460 | * @param cb_data Data for the callback function. Can be NULL. | |
461 | * @param poll_object TODO. | |
462 | * | |
463 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
464 | * SR_ERR_MALLOC upon memory allocation errors. | |
465 | */ | |
aac0ea25 | 466 | static int _sr_session_source_add(GPollFD *pollfd, int timeout, |
1a895c61 | 467 | sr_receive_data_callback_t cb, void *cb_data, gintptr poll_object) |
544a4582 BV |
468 | { |
469 | struct source *new_sources, *s; | |
aac0ea25 | 470 | GPollFD *new_pollfds; |
544a4582 | 471 | |
d08490aa UH |
472 | if (!cb) { |
473 | sr_err("session: %s: cb was NULL", __func__); | |
e0508e67 | 474 | return SR_ERR_ARG; |
9f45fb3a UH |
475 | } |
476 | ||
1f9813eb | 477 | /* Note: cb_data can be NULL, that's not a bug. */ |
9f45fb3a | 478 | |
2ac2e629 BV |
479 | new_pollfds = g_try_realloc(session->pollfds, |
480 | sizeof(GPollFD) * (session->num_sources + 1)); | |
0687dfcd | 481 | if (!new_pollfds) { |
1a895c61 | 482 | sr_err("session: %s: new_pollfds malloc failed", __func__); |
0687dfcd LPC |
483 | return SR_ERR_MALLOC; |
484 | } | |
485 | ||
b7e94111 | 486 | new_sources = g_try_realloc(session->sources, sizeof(struct source) * |
2ac2e629 | 487 | (session->num_sources + 1)); |
9f45fb3a UH |
488 | if (!new_sources) { |
489 | sr_err("session: %s: new_sources malloc failed", __func__); | |
e0508e67 | 490 | return SR_ERR_MALLOC; |
9f45fb3a | 491 | } |
544a4582 | 492 | |
b7e94111 LPC |
493 | new_pollfds[session->num_sources] = *pollfd; |
494 | s = &new_sources[session->num_sources++]; | |
544a4582 | 495 | s->timeout = timeout; |
d08490aa | 496 | s->cb = cb; |
1f9813eb | 497 | s->cb_data = cb_data; |
aac0ea25 | 498 | s->poll_object = poll_object; |
b7e94111 LPC |
499 | session->pollfds = new_pollfds; |
500 | session->sources = new_sources; | |
544a4582 | 501 | |
b7e94111 LPC |
502 | if (timeout != session->source_timeout && timeout > 0 |
503 | && (session->source_timeout == -1 || timeout < session->source_timeout)) | |
504 | session->source_timeout = timeout; | |
9f45fb3a | 505 | |
e0508e67 | 506 | return SR_OK; |
544a4582 BV |
507 | } |
508 | ||
9f45fb3a | 509 | /** |
6b2d8d3e | 510 | * Add an event source for a file descriptor. |
9f45fb3a | 511 | * |
aac0ea25 LPC |
512 | * @param fd The file descriptor. |
513 | * @param events Events to check for. | |
514 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
515 | * @param cb Callback function to add. Must not be NULL. | |
516 | * @param cb_data Data for the callback function. Can be NULL. | |
9f45fb3a | 517 | * |
aac0ea25 LPC |
518 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
519 | * SR_ERR_MALLOC upon memory allocation errors. | |
520 | */ | |
521 | SR_API int sr_session_source_add(int fd, int events, int timeout, | |
522 | sr_receive_data_callback_t cb, void *cb_data) | |
523 | { | |
524 | GPollFD p; | |
525 | ||
aac0ea25 LPC |
526 | p.fd = fd; |
527 | p.events = events; | |
aac0ea25 LPC |
528 | |
529 | return _sr_session_source_add(&p, timeout, cb, cb_data, (gintptr)fd); | |
530 | } | |
531 | ||
532 | /** | |
1a895c61 | 533 | * Add an event source for a GPollFD. |
aac0ea25 | 534 | * |
aac0ea25 LPC |
535 | * @param pollfd The GPollFD. |
536 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
537 | * @param cb Callback function to add. Must not be NULL. | |
538 | * @param cb_data Data for the callback function. Can be NULL. | |
44dae539 | 539 | * |
e0508e67 | 540 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
aac0ea25 | 541 | * SR_ERR_MALLOC upon memory allocation errors. |
9f45fb3a | 542 | */ |
aac0ea25 LPC |
543 | SR_API int sr_session_source_add_pollfd(GPollFD *pollfd, int timeout, |
544 | sr_receive_data_callback_t cb, void *cb_data) | |
545 | { | |
1a895c61 UH |
546 | return _sr_session_source_add(pollfd, timeout, cb, |
547 | cb_data, (gintptr)pollfd); | |
aac0ea25 LPC |
548 | } |
549 | ||
550 | /** | |
1a895c61 | 551 | * Add an event source for a GIOChannel. |
aac0ea25 | 552 | * |
aac0ea25 LPC |
553 | * @param channel The GIOChannel. |
554 | * @param events Events to poll on. | |
555 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
556 | * @param cb Callback function to add. Must not be NULL. | |
557 | * @param cb_data Data for the callback function. Can be NULL. | |
558 | * | |
559 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
560 | * SR_ERR_MALLOC upon memory allocation errors. | |
561 | */ | |
1a895c61 UH |
562 | SR_API int sr_session_source_add_channel(GIOChannel *channel, int events, |
563 | int timeout, sr_receive_data_callback_t cb, void *cb_data) | |
aac0ea25 LPC |
564 | { |
565 | GPollFD p; | |
566 | ||
567 | #ifdef _WIN32 | |
6b2d8d3e | 568 | g_io_channel_win32_make_pollfd(channel, events, &p); |
aac0ea25 LPC |
569 | #else |
570 | p.fd = g_io_channel_unix_get_fd(channel); | |
571 | p.events = events; | |
572 | #endif | |
573 | ||
574 | return _sr_session_source_add(&p, timeout, cb, cb_data, (gintptr)channel); | |
575 | } | |
576 | ||
6b2d8d3e UH |
577 | /** |
578 | * Remove the source belonging to the specified channel. | |
579 | * | |
580 | * @todo Add more error checks and logging. | |
581 | * | |
582 | * @param channel The channel for which the source should be removed. | |
583 | * | |
584 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
585 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
586 | * internal errors. | |
587 | */ | |
aac0ea25 | 588 | static int _sr_session_source_remove(gintptr poll_object) |
544a4582 BV |
589 | { |
590 | struct source *new_sources; | |
0687dfcd | 591 | GPollFD *new_pollfds; |
b7e94111 | 592 | unsigned int old; |
544a4582 | 593 | |
b7e94111 | 594 | if (!session->sources || !session->num_sources) { |
e0508e67 | 595 | sr_err("session: %s: sources was NULL", __func__); |
0abee507 | 596 | return SR_ERR_BUG; |
e0508e67 UH |
597 | } |
598 | ||
b7e94111 LPC |
599 | for (old = 0; old < session->num_sources; old++) { |
600 | if (session->sources[old].poll_object == poll_object) | |
2bccd322 | 601 | break; |
9f45fb3a UH |
602 | } |
603 | ||
2bccd322 | 604 | /* fd not found, nothing to do */ |
b7e94111 | 605 | if (old == session->num_sources) |
2bccd322 LPC |
606 | return SR_OK; |
607 | ||
b7e94111 | 608 | session->num_sources -= 1; |
2bccd322 | 609 | |
b7e94111 LPC |
610 | if (old != session->num_sources) { |
611 | memmove(&session->pollfds[old], &session->pollfds[old+1], | |
612 | (session->num_sources - old) * sizeof(GPollFD)); | |
613 | memmove(&session->sources[old], &session->sources[old+1], | |
614 | (session->num_sources - old) * sizeof(struct source)); | |
9f45fb3a | 615 | } |
544a4582 | 616 | |
b7e94111 LPC |
617 | new_pollfds = g_try_realloc(session->pollfds, sizeof(GPollFD) * session->num_sources); |
618 | if (!new_pollfds && session->num_sources > 0) { | |
1a895c61 | 619 | sr_err("session: %s: new_pollfds malloc failed", __func__); |
0687dfcd LPC |
620 | return SR_ERR_MALLOC; |
621 | } | |
622 | ||
b7e94111 LPC |
623 | new_sources = g_try_realloc(session->sources, sizeof(struct source) * session->num_sources); |
624 | if (!new_sources && session->num_sources > 0) { | |
2bccd322 LPC |
625 | sr_err("session: %s: new_sources malloc failed", __func__); |
626 | return SR_ERR_MALLOC; | |
544a4582 | 627 | } |
e0508e67 | 628 | |
b7e94111 LPC |
629 | session->pollfds = new_pollfds; |
630 | session->sources = new_sources; | |
2bccd322 | 631 | |
e0508e67 | 632 | return SR_OK; |
544a4582 | 633 | } |
aac0ea25 | 634 | |
6b2d8d3e | 635 | /** |
aac0ea25 LPC |
636 | * Remove the source belonging to the specified file descriptor. |
637 | * | |
1a895c61 | 638 | * @param fd The file descriptor for which the source should be removed. |
aac0ea25 LPC |
639 | * |
640 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
641 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
642 | * internal errors. | |
643 | */ | |
644 | SR_API int sr_session_source_remove(int fd) | |
645 | { | |
646 | return _sr_session_source_remove((gintptr)fd); | |
647 | } | |
648 | ||
649 | /** | |
650 | * Remove the source belonging to the specified poll descriptor. | |
651 | * | |
aac0ea25 LPC |
652 | * @param pollfd The poll descriptor for which the source should be removed. |
653 | * | |
654 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
655 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
656 | * internal errors. | |
657 | */ | |
658 | SR_API int sr_session_source_remove_pollfd(GPollFD *pollfd) | |
659 | { | |
660 | return _sr_session_source_remove((gintptr)pollfd); | |
661 | } | |
662 | ||
6b2d8d3e | 663 | /** |
aac0ea25 LPC |
664 | * Remove the source belonging to the specified channel. |
665 | * | |
1a895c61 | 666 | * @param channel The channel for which the source should be removed. |
aac0ea25 LPC |
667 | * |
668 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
669 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
670 | * internal errors. | |
671 | */ | |
672 | SR_API int sr_session_source_remove_channel(GIOChannel *channel) | |
673 | { | |
674 | return _sr_session_source_remove((gintptr)channel); | |
675 | } | |
7b870c38 UH |
676 | |
677 | /** @} */ |