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