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