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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 | |
3d2efd7d UH |
28 | /* demo.c. TODO: Should not be global! */ |
29 | extern SR_PRIV GIOChannel channels[2]; | |
a1bb33af | 30 | |
544a4582 | 31 | struct source { |
544a4582 | 32 | int timeout; |
d08490aa | 33 | sr_receive_data_callback_t cb; |
1f9813eb | 34 | void *cb_data; |
aac0ea25 LPC |
35 | |
36 | /* This is used to keep track of the object (fd, pollfd or channel) which is | |
37 | * being polled and will be used to match the source when removing it again. | |
38 | */ | |
39 | gintptr poll_object; | |
544a4582 BV |
40 | }; |
41 | ||
7d658874 | 42 | /* There can only be one session at a time. */ |
a0ecd83b | 43 | /* 'session' is not static, it's used elsewhere (via 'extern'). */ |
2872d21e | 44 | struct sr_session *session; |
a0ecd83b | 45 | static int num_sources = 0; |
544a4582 | 46 | |
0687dfcd LPC |
47 | /* Both "sources" and "pollfds" are of the same size and contain pairs of |
48 | * descriptor and callback function. We can not embed the GPollFD into the | |
49 | * source struct since we want to be able to pass the array of all poll | |
50 | * descriptors to g_poll. | |
51 | */ | |
a0ecd83b | 52 | static struct source *sources = NULL; |
0687dfcd | 53 | static GPollFD *pollfds; |
a0ecd83b | 54 | static int source_timeout = -1; |
544a4582 | 55 | |
9f45fb3a UH |
56 | /** |
57 | * Create a new session. | |
58 | * | |
9f45fb3a UH |
59 | * TODO: Should it use the file-global "session" variable or take an argument? |
60 | * The same question applies to all the other session functions. | |
61 | * | |
62 | * @return A pointer to the newly allocated session, or NULL upon errors. | |
63 | */ | |
1a081ca6 | 64 | SR_API struct sr_session *sr_session_new(void) |
a1bb33af | 65 | { |
133a37bf | 66 | if (!(session = g_try_malloc0(sizeof(struct sr_session)))) { |
9f45fb3a UH |
67 | sr_err("session: %s: session malloc failed", __func__); |
68 | return NULL; /* TODO: SR_ERR_MALLOC? */ | |
69 | } | |
a1bb33af UH |
70 | |
71 | return session; | |
72 | } | |
73 | ||
9f45fb3a UH |
74 | /** |
75 | * Destroy the current session. | |
76 | * | |
77 | * This frees up all memory used by the session. | |
78 | * | |
e0508e67 | 79 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 80 | */ |
1a081ca6 | 81 | SR_API int sr_session_destroy(void) |
a1bb33af | 82 | { |
9f45fb3a | 83 | if (!session) { |
133a37bf | 84 | sr_err("session: %s: session was NULL", __func__); |
e0508e67 | 85 | return SR_ERR_BUG; |
9f45fb3a UH |
86 | } |
87 | ||
bb7ef793 UH |
88 | g_slist_free(session->devs); |
89 | session->devs = NULL; | |
a1bb33af | 90 | |
9f45fb3a UH |
91 | /* TODO: Error checks needed? */ |
92 | ||
aa4b1107 | 93 | /* TODO: Loop over protocol decoders and free them. */ |
a1bb33af UH |
94 | |
95 | g_free(session); | |
9f45fb3a | 96 | session = NULL; |
e0508e67 UH |
97 | |
98 | return SR_OK; | |
a1bb33af UH |
99 | } |
100 | ||
9f45fb3a UH |
101 | /** |
102 | * Remove all the devices from the current session. TODO? | |
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 | ||
bb7ef793 UH |
116 | g_slist_free(session->devs); |
117 | session->devs = NULL; | |
e0508e67 UH |
118 | |
119 | return SR_OK; | |
a1bb33af UH |
120 | } |
121 | ||
9f45fb3a UH |
122 | /** |
123 | * Add a device to the current session. | |
124 | * | |
bb7ef793 | 125 | * @param dev The device to add to the current session. Must not be NULL. |
c09f0b57 | 126 | * Also, dev->driver and dev->driver->dev_open must not be NULL. |
9f45fb3a UH |
127 | * |
128 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. | |
129 | */ | |
bb7ef793 | 130 | SR_API int sr_session_dev_add(struct sr_dev *dev) |
a1bb33af UH |
131 | { |
132 | int ret; | |
133 | ||
bb7ef793 UH |
134 | if (!dev) { |
135 | sr_err("session: %s: dev was NULL", __func__); | |
9f45fb3a UH |
136 | return SR_ERR_ARG; |
137 | } | |
138 | ||
d6eb0c33 UH |
139 | if (!session) { |
140 | sr_err("session: %s: session was NULL", __func__); | |
141 | return SR_ERR_BUG; | |
142 | } | |
143 | ||
144 | /* If dev->driver is NULL, this is a virtual device. */ | |
c09f0b57 | 145 | if (!dev->driver) { |
d6eb0c33 UH |
146 | sr_dbg("session: %s: dev->driver was NULL, this seems to be " |
147 | "a virtual device; continuing", __func__); | |
148 | /* Just add the device, don't run dev_open(). */ | |
149 | session->devs = g_slist_append(session->devs, dev); | |
150 | return SR_OK; | |
9f45fb3a UH |
151 | } |
152 | ||
d6eb0c33 | 153 | /* dev->driver is non-NULL (i.e. we have a real device). */ |
c09f0b57 UH |
154 | if (!dev->driver->dev_open) { |
155 | sr_err("session: %s: dev->driver->dev_open was NULL", | |
9f45fb3a | 156 | __func__); |
8ec95d22 | 157 | return SR_ERR_BUG; |
9f45fb3a UH |
158 | } |
159 | ||
c09f0b57 | 160 | if ((ret = dev->driver->dev_open(dev->driver_index)) != SR_OK) { |
e7eb703f | 161 | sr_err("session: %s: dev_open failed (%d)", __func__, ret); |
9f45fb3a | 162 | return ret; |
aa4b1107 | 163 | } |
a1bb33af | 164 | |
bb7ef793 | 165 | session->devs = g_slist_append(session->devs, dev); |
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 | ||
9f45fb3a UH |
214 | /** |
215 | * TODO. | |
216 | */ | |
e0508e67 | 217 | static int sr_session_run_poll(void) |
544a4582 | 218 | { |
544a4582 BV |
219 | int ret, i; |
220 | ||
544a4582 | 221 | while (session->running) { |
0687dfcd | 222 | ret = g_poll(pollfds, num_sources, source_timeout); |
544a4582 BV |
223 | |
224 | for (i = 0; i < num_sources; i++) { | |
0687dfcd | 225 | if (pollfds[i].revents > 0 || (ret == 0 |
544a4582 BV |
226 | && source_timeout == sources[i].timeout)) { |
227 | /* | |
228 | * Invoke the source's callback on an event, | |
229 | * or if the poll timeout out and this source | |
230 | * asked for that timeout. | |
231 | */ | |
0687dfcd | 232 | if (!sources[i].cb(pollfds[i].fd, pollfds[i].revents, |
1f9813eb | 233 | sources[i].cb_data)) |
0687dfcd | 234 | sr_session_source_remove(pollfds[i].fd); |
544a4582 BV |
235 | } |
236 | } | |
237 | } | |
e0508e67 UH |
238 | |
239 | return SR_OK; | |
544a4582 BV |
240 | } |
241 | ||
9f45fb3a UH |
242 | /** |
243 | * Start a session. | |
244 | * | |
a1645fcd | 245 | * There can only be one session at a time. |
9f45fb3a UH |
246 | * |
247 | * @return SR_OK upon success, SR_ERR upon errors. | |
248 | */ | |
1a081ca6 | 249 | SR_API int sr_session_start(void) |
7d658874 | 250 | { |
bb7ef793 | 251 | struct sr_dev *dev; |
7d658874 BV |
252 | GSList *l; |
253 | int ret; | |
254 | ||
9f45fb3a UH |
255 | if (!session) { |
256 | sr_err("session: %s: session was NULL; a session must be " | |
257 | "created first, before starting it.", __func__); | |
0abee507 | 258 | return SR_ERR_BUG; |
9f45fb3a UH |
259 | } |
260 | ||
bb7ef793 | 261 | if (!session->devs) { |
9f45fb3a | 262 | /* TODO: Actually the case? */ |
bb7ef793 | 263 | sr_err("session: %s: session->devs was NULL; a session " |
9f45fb3a | 264 | "cannot be started without devices.", __func__); |
0abee507 | 265 | return SR_ERR_BUG; |
9f45fb3a UH |
266 | } |
267 | ||
c09f0b57 | 268 | /* TODO: Check driver_index validity? */ |
9f45fb3a | 269 | |
b08024a8 | 270 | sr_info("session: starting"); |
9f45fb3a | 271 | |
bb7ef793 UH |
272 | for (l = session->devs; l; l = l->next) { |
273 | dev = l->data; | |
274 | /* TODO: Check for dev != NULL. */ | |
c09f0b57 UH |
275 | if ((ret = dev->driver->dev_acquisition_start( |
276 | dev->driver_index, dev)) != 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 | * | |
9f45fb3a UH |
291 | * TODO: Various error checks etc. |
292 | * | |
e0508e67 | 293 | * @return SR_OK upon success, SR_ERR_BUG upon errors. |
9f45fb3a | 294 | */ |
1a081ca6 | 295 | SR_API int sr_session_run(void) |
7d658874 | 296 | { |
9f45fb3a UH |
297 | if (!session) { |
298 | sr_err("session: %s: session was NULL; a session must be " | |
299 | "created first, before running it.", __func__); | |
e0508e67 | 300 | return SR_ERR_BUG; |
9f45fb3a UH |
301 | } |
302 | ||
bb7ef793 | 303 | if (!session->devs) { |
9f45fb3a | 304 | /* TODO: Actually the case? */ |
bb7ef793 | 305 | sr_err("session: %s: session->devs was NULL; a session " |
9f45fb3a | 306 | "cannot be run without devices.", __func__); |
e0508e67 | 307 | return SR_ERR_BUG; |
9f45fb3a UH |
308 | } |
309 | ||
b08024a8 | 310 | sr_info("session: running"); |
7d658874 BV |
311 | session->running = TRUE; |
312 | ||
9f45fb3a | 313 | /* Do we have real sources? */ |
0687dfcd | 314 | if (num_sources == 1 && pollfds[0].fd == -1) { |
9f45fb3a | 315 | /* Dummy source, freewheel over it. */ |
7d658874 | 316 | while (session->running) |
1f9813eb | 317 | sources[0].cb(-1, 0, sources[0].cb_data); |
9f45fb3a UH |
318 | } else { |
319 | /* Real sources, use g_poll() main loop. */ | |
8a2efef2 | 320 | sr_session_run_poll(); |
9f45fb3a UH |
321 | } |
322 | ||
e0508e67 | 323 | return SR_OK; |
7d658874 BV |
324 | } |
325 | ||
9f45fb3a UH |
326 | /** |
327 | * Halt the current session. | |
328 | * | |
44dae539 UH |
329 | * This requests the current session be stopped as soon as possible, for |
330 | * example on receiving an SR_DF_END packet. | |
e0508e67 UH |
331 | * |
332 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. | |
9f45fb3a | 333 | */ |
1a081ca6 | 334 | SR_API int sr_session_halt(void) |
544a4582 | 335 | { |
9f45fb3a UH |
336 | if (!session) { |
337 | sr_err("session: %s: session was NULL", __func__); | |
e0508e67 | 338 | return SR_ERR_BUG; |
9f45fb3a UH |
339 | } |
340 | ||
b08024a8 | 341 | sr_info("session: halting"); |
544a4582 | 342 | session->running = FALSE; |
9f45fb3a | 343 | |
e0508e67 | 344 | return SR_OK; |
544a4582 BV |
345 | } |
346 | ||
9f45fb3a UH |
347 | /** |
348 | * Stop the current session. | |
349 | * | |
a1645fcd | 350 | * The current session is stopped immediately, with all acquisition sessions |
c09f0b57 | 351 | * being stopped and hardware drivers cleaned up. |
9f45fb3a | 352 | * |
e0508e67 | 353 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 354 | */ |
1a081ca6 | 355 | SR_API int sr_session_stop(void) |
a1bb33af | 356 | { |
bb7ef793 | 357 | struct sr_dev *dev; |
a1bb33af UH |
358 | GSList *l; |
359 | ||
9f45fb3a UH |
360 | if (!session) { |
361 | sr_err("session: %s: session was NULL", __func__); | |
e0508e67 | 362 | return SR_ERR_BUG; |
9f45fb3a UH |
363 | } |
364 | ||
b08024a8 | 365 | sr_info("session: stopping"); |
544a4582 | 366 | session->running = FALSE; |
e0508e67 | 367 | |
bb7ef793 UH |
368 | for (l = session->devs; l; l = l->next) { |
369 | dev = l->data; | |
370 | /* Check for dev != NULL. */ | |
c09f0b57 UH |
371 | if (dev->driver) { |
372 | if (dev->driver->dev_acquisition_stop) | |
373 | dev->driver->dev_acquisition_stop(dev->driver_index, dev); | |
374 | if (dev->driver->cleanup) | |
375 | dev->driver->cleanup(); | |
8c76be53 | 376 | } |
a1bb33af | 377 | } |
9f45fb3a | 378 | |
e0508e67 | 379 | return SR_OK; |
a1bb33af UH |
380 | } |
381 | ||
9f45fb3a | 382 | /** |
a1645fcd | 383 | * Debug helper. |
9f45fb3a | 384 | * |
996b0c72 | 385 | * @param packet The packet to show debugging information for. |
9f45fb3a | 386 | */ |
18beaeff | 387 | static void datafeed_dump(struct sr_datafeed_packet *packet) |
7d2afd6c BV |
388 | { |
389 | struct sr_datafeed_logic *logic; | |
ee7489d2 | 390 | struct sr_datafeed_analog *analog; |
7d2afd6c BV |
391 | |
392 | switch (packet->type) { | |
393 | case SR_DF_HEADER: | |
394 | sr_dbg("bus: received SR_DF_HEADER"); | |
395 | break; | |
396 | case SR_DF_TRIGGER: | |
01469707 | 397 | sr_dbg("bus: received SR_DF_TRIGGER"); |
7d2afd6c | 398 | break; |
ee7489d2 BV |
399 | case SR_DF_META_LOGIC: |
400 | sr_dbg("bus: received SR_DF_META_LOGIC"); | |
401 | break; | |
7d2afd6c BV |
402 | case SR_DF_LOGIC: |
403 | logic = packet->payload; | |
e0508e67 | 404 | /* TODO: Check for logic != NULL. */ |
01469707 | 405 | sr_dbg("bus: received SR_DF_LOGIC %" PRIu64 " bytes", logic->length); |
7d2afd6c | 406 | break; |
ee7489d2 BV |
407 | case SR_DF_META_ANALOG: |
408 | sr_dbg("bus: received SR_DF_META_LOGIC"); | |
409 | break; | |
410 | case SR_DF_ANALOG: | |
411 | analog = packet->payload; | |
412 | /* TODO: Check for analog != NULL. */ | |
413 | sr_dbg("bus: received SR_DF_ANALOG %d samples", analog->num_samples); | |
414 | break; | |
7d2afd6c BV |
415 | case SR_DF_END: |
416 | sr_dbg("bus: received SR_DF_END"); | |
417 | break; | |
6ea7669c BV |
418 | case SR_DF_FRAME_BEGIN: |
419 | sr_dbg("bus: received SR_DF_FRAME_BEGIN"); | |
420 | break; | |
421 | case SR_DF_FRAME_END: | |
422 | sr_dbg("bus: received SR_DF_FRAME_END"); | |
423 | break; | |
7d2afd6c | 424 | default: |
18beaeff | 425 | sr_dbg("bus: received unknown packet type %d", packet->type); |
9f45fb3a | 426 | break; |
7d2afd6c | 427 | } |
7d2afd6c BV |
428 | } |
429 | ||
9f45fb3a | 430 | /** |
a1645fcd BV |
431 | * Send a packet to whatever is listening on the datafeed bus. |
432 | * | |
433 | * Hardware drivers use this to send a data packet to the frontend. | |
9f45fb3a | 434 | * |
bb7ef793 | 435 | * @param dev TODO. |
31ccebc4 | 436 | * @param packet The datafeed packet to send to the session bus. |
44dae539 | 437 | * |
e0508e67 | 438 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. |
9f45fb3a | 439 | */ |
31ccebc4 UH |
440 | SR_PRIV int sr_session_send(struct sr_dev *dev, |
441 | struct sr_datafeed_packet *packet) | |
a1bb33af UH |
442 | { |
443 | GSList *l; | |
d08490aa | 444 | sr_datafeed_callback_t cb; |
a1bb33af | 445 | |
bb7ef793 UH |
446 | if (!dev) { |
447 | sr_err("session: %s: dev was NULL", __func__); | |
e0508e67 | 448 | return SR_ERR_ARG; |
9f45fb3a UH |
449 | } |
450 | ||
e0508e67 UH |
451 | if (!packet) { |
452 | sr_err("session: %s: packet was NULL", __func__); | |
453 | return SR_ERR_ARG; | |
9f45fb3a UH |
454 | } |
455 | ||
62c82025 | 456 | for (l = session->datafeed_callbacks; l; l = l->next) { |
18beaeff BV |
457 | if (sr_log_loglevel_get() >= SR_LOG_DBG) |
458 | datafeed_dump(packet); | |
a1bb33af | 459 | cb = l->data; |
9f45fb3a | 460 | /* TODO: Check for cb != NULL. */ |
bb7ef793 | 461 | cb(dev, packet); |
a1bb33af | 462 | } |
9f45fb3a | 463 | |
e0508e67 | 464 | return SR_OK; |
a1bb33af UH |
465 | } |
466 | ||
aac0ea25 LPC |
467 | static int _sr_session_source_add(GPollFD *pollfd, int timeout, |
468 | sr_receive_data_callback_t cb, void *cb_data, gintptr poll_object) | |
544a4582 BV |
469 | { |
470 | struct source *new_sources, *s; | |
aac0ea25 | 471 | GPollFD *new_pollfds; |
544a4582 | 472 | |
d08490aa UH |
473 | if (!cb) { |
474 | sr_err("session: %s: cb was NULL", __func__); | |
e0508e67 | 475 | return SR_ERR_ARG; |
9f45fb3a UH |
476 | } |
477 | ||
1f9813eb | 478 | /* Note: cb_data can be NULL, that's not a bug. */ |
9f45fb3a | 479 | |
0687dfcd LPC |
480 | new_pollfds = g_try_realloc(pollfds, sizeof(GPollFD) * (num_sources + 1)); |
481 | if (!new_pollfds) { | |
482 | sr_err("session: %s: new_sources malloc failed", __func__); | |
483 | return SR_ERR_MALLOC; | |
484 | } | |
485 | ||
2bccd322 | 486 | new_sources = g_try_realloc(sources, sizeof(struct source) * (num_sources + 1)); |
9f45fb3a UH |
487 | if (!new_sources) { |
488 | sr_err("session: %s: new_sources malloc failed", __func__); | |
e0508e67 | 489 | return SR_ERR_MALLOC; |
9f45fb3a | 490 | } |
544a4582 | 491 | |
aac0ea25 | 492 | new_pollfds[num_sources] = *pollfd; |
544a4582 | 493 | s = &new_sources[num_sources++]; |
544a4582 | 494 | s->timeout = timeout; |
d08490aa | 495 | s->cb = cb; |
1f9813eb | 496 | s->cb_data = cb_data; |
aac0ea25 | 497 | s->poll_object = poll_object; |
0687dfcd | 498 | pollfds = new_pollfds; |
544a4582 BV |
499 | sources = new_sources; |
500 | ||
501 | if (timeout != source_timeout && timeout > 0 | |
502 | && (source_timeout == -1 || timeout < source_timeout)) | |
503 | source_timeout = timeout; | |
9f45fb3a | 504 | |
e0508e67 | 505 | return SR_OK; |
544a4582 BV |
506 | } |
507 | ||
9f45fb3a | 508 | /** |
aac0ea25 | 509 | * Add a event source for a file descriptor. |
9f45fb3a | 510 | * |
aac0ea25 LPC |
511 | * @param fd The file descriptor. |
512 | * @param events Events to check for. | |
513 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
514 | * @param cb Callback function to add. Must not be NULL. | |
515 | * @param cb_data Data for the callback function. Can be NULL. | |
9f45fb3a | 516 | * |
aac0ea25 LPC |
517 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
518 | * SR_ERR_MALLOC upon memory allocation errors. | |
519 | */ | |
520 | SR_API int sr_session_source_add(int fd, int events, int timeout, | |
521 | sr_receive_data_callback_t cb, void *cb_data) | |
522 | { | |
523 | GPollFD p; | |
524 | ||
525 | #ifdef _WIN32 | |
526 | g_io_channel_win32_make_pollfd(&channels[0], | |
527 | events, &p); | |
528 | #else | |
529 | p.fd = fd; | |
530 | p.events = events; | |
531 | #endif | |
532 | ||
533 | return _sr_session_source_add(&p, timeout, cb, cb_data, (gintptr)fd); | |
534 | } | |
535 | ||
536 | /** | |
537 | * Add a event source for a GPollFD | |
538 | * | |
539 | * TODO: More error checks etc. | |
540 | * | |
541 | * @param pollfd The GPollFD. | |
542 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
543 | * @param cb Callback function to add. Must not be NULL. | |
544 | * @param cb_data Data for the callback function. Can be NULL. | |
44dae539 | 545 | * |
e0508e67 | 546 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
aac0ea25 | 547 | * SR_ERR_MALLOC upon memory allocation errors. |
9f45fb3a | 548 | */ |
aac0ea25 LPC |
549 | SR_API int sr_session_source_add_pollfd(GPollFD *pollfd, int timeout, |
550 | sr_receive_data_callback_t cb, void *cb_data) | |
551 | { | |
552 | return _sr_session_source_add(pollfd, timeout, cb, cb_data, (gintptr)pollfd); | |
553 | } | |
554 | ||
555 | /** | |
556 | * Add a event source for a GIOChannel | |
557 | * | |
558 | * TODO: More error checks etc. | |
559 | * | |
560 | * @param channel The GIOChannel. | |
561 | * @param events Events to poll on. | |
562 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
563 | * @param cb Callback function to add. Must not be NULL. | |
564 | * @param cb_data Data for the callback function. Can be NULL. | |
565 | * | |
566 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
567 | * SR_ERR_MALLOC upon memory allocation errors. | |
568 | */ | |
569 | SR_API int sr_session_source_add_channel(GIOChannel *channel, int events, int timeout, | |
570 | sr_receive_data_callback_t cb, void *cb_data) | |
571 | { | |
572 | GPollFD p; | |
573 | ||
574 | #ifdef _WIN32 | |
575 | g_io_channel_win32_make_pollfd(channel, | |
576 | events, &p); | |
577 | #else | |
578 | p.fd = g_io_channel_unix_get_fd(channel); | |
579 | p.events = events; | |
580 | #endif | |
581 | ||
582 | return _sr_session_source_add(&p, timeout, cb, cb_data, (gintptr)channel); | |
583 | } | |
584 | ||
585 | ||
586 | static int _sr_session_source_remove(gintptr poll_object) | |
544a4582 BV |
587 | { |
588 | struct source *new_sources; | |
0687dfcd LPC |
589 | GPollFD *new_pollfds; |
590 | int old; | |
544a4582 | 591 | |
e0508e67 UH |
592 | if (!sources) { |
593 | sr_err("session: %s: sources was NULL", __func__); | |
0abee507 | 594 | return SR_ERR_BUG; |
e0508e67 UH |
595 | } |
596 | ||
2bccd322 | 597 | for (old = 0; old < num_sources; old++) { |
aac0ea25 | 598 | if (sources[old].poll_object == poll_object) |
2bccd322 | 599 | break; |
9f45fb3a UH |
600 | } |
601 | ||
2bccd322 LPC |
602 | /* fd not found, nothing to do */ |
603 | if (old == num_sources) | |
604 | return SR_OK; | |
605 | ||
606 | num_sources -= 1; | |
607 | ||
608 | if (old != num_sources) { | |
0687dfcd LPC |
609 | memmove(&pollfds[old], &pollfds[old+1], |
610 | (num_sources - old) * sizeof(GPollFD)); | |
2bccd322 LPC |
611 | memmove(&sources[old], &sources[old+1], |
612 | (num_sources - old) * sizeof(struct source)); | |
9f45fb3a | 613 | } |
544a4582 | 614 | |
0687dfcd LPC |
615 | new_pollfds = g_try_realloc(sources, sizeof(GPollFD) * num_sources); |
616 | if (!new_pollfds && num_sources > 0) { | |
617 | sr_err("session: %s: new_sources malloc failed", __func__); | |
618 | return SR_ERR_MALLOC; | |
619 | } | |
620 | ||
621 | new_sources = g_try_realloc(sources, sizeof(struct source) * num_sources); | |
2bccd322 LPC |
622 | if (!new_sources && num_sources > 0) { |
623 | sr_err("session: %s: new_sources malloc failed", __func__); | |
624 | return SR_ERR_MALLOC; | |
544a4582 | 625 | } |
e0508e67 | 626 | |
0687dfcd | 627 | pollfds = new_pollfds; |
2bccd322 LPC |
628 | sources = new_sources; |
629 | ||
e0508e67 | 630 | return SR_OK; |
544a4582 | 631 | } |
aac0ea25 LPC |
632 | |
633 | /* | |
634 | * Remove the source belonging to the specified file descriptor. | |
635 | * | |
636 | * TODO: More error checks. | |
637 | * | |
638 | * @param fd: The file descriptor for which the source should be removed. | |
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 | * | |
652 | * TODO: More error checks. | |
653 | * | |
654 | * @param pollfd The poll descriptor for which the source should be removed. | |
655 | * | |
656 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
657 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
658 | * internal errors. | |
659 | */ | |
660 | SR_API int sr_session_source_remove_pollfd(GPollFD *pollfd) | |
661 | { | |
662 | return _sr_session_source_remove((gintptr)pollfd); | |
663 | } | |
664 | ||
665 | /* | |
666 | * Remove the source belonging to the specified channel. | |
667 | * | |
668 | * TODO: More error checks. | |
669 | * | |
670 | * @parama channel: The channel for which the source should be removed. | |
671 | * | |
672 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
673 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
674 | * internal errors. | |
675 | */ | |
676 | SR_API int sr_session_source_remove_channel(GIOChannel *channel) | |
677 | { | |
678 | return _sr_session_source_remove((gintptr)channel); | |
679 | } |