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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 | |
544a4582 | 28 | struct source { |
544a4582 | 29 | int timeout; |
d08490aa | 30 | sr_receive_data_callback_t cb; |
1f9813eb | 31 | void *cb_data; |
aac0ea25 LPC |
32 | |
33 | /* This is used to keep track of the object (fd, pollfd or channel) which is | |
34 | * being polled and will be used to match the source when removing it again. | |
35 | */ | |
36 | gintptr poll_object; | |
544a4582 BV |
37 | }; |
38 | ||
7d658874 | 39 | /* There can only be one session at a time. */ |
a0ecd83b | 40 | /* 'session' is not static, it's used elsewhere (via 'extern'). */ |
2872d21e | 41 | struct sr_session *session; |
a0ecd83b | 42 | static int num_sources = 0; |
544a4582 | 43 | |
0687dfcd LPC |
44 | /* Both "sources" and "pollfds" are of the same size and contain pairs of |
45 | * descriptor and callback function. We can not embed the GPollFD into the | |
46 | * source struct since we want to be able to pass the array of all poll | |
47 | * descriptors to g_poll. | |
48 | */ | |
a0ecd83b | 49 | static struct source *sources = NULL; |
0687dfcd | 50 | static GPollFD *pollfds; |
a0ecd83b | 51 | static int source_timeout = -1; |
544a4582 | 52 | |
9f45fb3a UH |
53 | /** |
54 | * Create a new session. | |
55 | * | |
9f45fb3a UH |
56 | * TODO: Should it use the file-global "session" variable or take an argument? |
57 | * The same question applies to all the other session functions. | |
58 | * | |
59 | * @return A pointer to the newly allocated session, or NULL upon errors. | |
60 | */ | |
1a081ca6 | 61 | SR_API struct sr_session *sr_session_new(void) |
a1bb33af | 62 | { |
133a37bf | 63 | if (!(session = g_try_malloc0(sizeof(struct sr_session)))) { |
9f45fb3a UH |
64 | sr_err("session: %s: session malloc failed", __func__); |
65 | return NULL; /* TODO: SR_ERR_MALLOC? */ | |
66 | } | |
a1bb33af UH |
67 | |
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 | ||
bb7ef793 UH |
85 | g_slist_free(session->devs); |
86 | session->devs = NULL; | |
a1bb33af | 87 | |
9f45fb3a UH |
88 | /* TODO: Error checks needed? */ |
89 | ||
aa4b1107 | 90 | /* TODO: Loop over protocol decoders and free them. */ |
a1bb33af UH |
91 | |
92 | g_free(session); | |
9f45fb3a | 93 | session = NULL; |
e0508e67 UH |
94 | |
95 | return SR_OK; | |
a1bb33af UH |
96 | } |
97 | ||
9f45fb3a UH |
98 | /** |
99 | * Remove all the devices from the current session. TODO? | |
100 | * | |
101 | * The session itself (i.e., the struct sr_session) is not free'd and still | |
102 | * exists after this function returns. | |
103 | * | |
e0508e67 | 104 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 105 | */ |
01c3e9db | 106 | SR_API int sr_session_dev_remove_all(void) |
a1bb33af | 107 | { |
9f45fb3a | 108 | if (!session) { |
133a37bf | 109 | sr_err("session: %s: session was NULL", __func__); |
e0508e67 | 110 | return SR_ERR_BUG; |
9f45fb3a UH |
111 | } |
112 | ||
bb7ef793 UH |
113 | g_slist_free(session->devs); |
114 | session->devs = NULL; | |
e0508e67 UH |
115 | |
116 | return SR_OK; | |
a1bb33af UH |
117 | } |
118 | ||
9f45fb3a UH |
119 | /** |
120 | * Add a device to the current session. | |
121 | * | |
bb7ef793 | 122 | * @param dev The device to add to the current session. Must not be NULL. |
c09f0b57 | 123 | * Also, dev->driver and dev->driver->dev_open must not be NULL. |
9f45fb3a UH |
124 | * |
125 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. | |
126 | */ | |
bb7ef793 | 127 | SR_API int sr_session_dev_add(struct sr_dev *dev) |
a1bb33af UH |
128 | { |
129 | int ret; | |
130 | ||
bb7ef793 UH |
131 | if (!dev) { |
132 | sr_err("session: %s: dev was NULL", __func__); | |
9f45fb3a UH |
133 | return SR_ERR_ARG; |
134 | } | |
135 | ||
d6eb0c33 UH |
136 | if (!session) { |
137 | sr_err("session: %s: session was NULL", __func__); | |
138 | return SR_ERR_BUG; | |
139 | } | |
140 | ||
141 | /* If dev->driver is NULL, this is a virtual device. */ | |
c09f0b57 | 142 | if (!dev->driver) { |
d6eb0c33 UH |
143 | sr_dbg("session: %s: dev->driver was NULL, this seems to be " |
144 | "a virtual device; continuing", __func__); | |
145 | /* Just add the device, don't run dev_open(). */ | |
146 | session->devs = g_slist_append(session->devs, dev); | |
147 | return SR_OK; | |
9f45fb3a UH |
148 | } |
149 | ||
d6eb0c33 | 150 | /* dev->driver is non-NULL (i.e. we have a real device). */ |
c09f0b57 UH |
151 | if (!dev->driver->dev_open) { |
152 | sr_err("session: %s: dev->driver->dev_open was NULL", | |
9f45fb3a | 153 | __func__); |
8ec95d22 | 154 | return SR_ERR_BUG; |
9f45fb3a UH |
155 | } |
156 | ||
c09f0b57 | 157 | if ((ret = dev->driver->dev_open(dev->driver_index)) != SR_OK) { |
e7eb703f | 158 | sr_err("session: %s: dev_open failed (%d)", __func__, ret); |
9f45fb3a | 159 | return ret; |
aa4b1107 | 160 | } |
a1bb33af | 161 | |
bb7ef793 | 162 | session->devs = g_slist_append(session->devs, dev); |
aa4b1107 | 163 | |
e46b8fb1 | 164 | return SR_OK; |
a1bb33af UH |
165 | } |
166 | ||
9f45fb3a | 167 | /** |
01c3e9db | 168 | * Remove all datafeed callbacks in the current session. |
9f45fb3a | 169 | * |
e0508e67 | 170 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 171 | */ |
01c3e9db | 172 | SR_API int sr_session_datafeed_callback_remove_all(void) |
a1bb33af | 173 | { |
9f45fb3a UH |
174 | if (!session) { |
175 | sr_err("session: %s: session was NULL", __func__); | |
e0508e67 | 176 | return SR_ERR_BUG; |
9f45fb3a UH |
177 | } |
178 | ||
a1bb33af UH |
179 | g_slist_free(session->datafeed_callbacks); |
180 | session->datafeed_callbacks = NULL; | |
e0508e67 UH |
181 | |
182 | return SR_OK; | |
a1bb33af UH |
183 | } |
184 | ||
9f45fb3a UH |
185 | /** |
186 | * Add a datafeed callback to the current session. | |
187 | * | |
d08490aa | 188 | * @param cb Function to call when a chunk of data is received. |
0abee507 | 189 | * Must not be NULL. |
a1645fcd | 190 | * |
e0508e67 | 191 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 192 | */ |
d08490aa | 193 | SR_API int sr_session_datafeed_callback_add(sr_datafeed_callback_t cb) |
a1bb33af | 194 | { |
9f45fb3a UH |
195 | if (!session) { |
196 | sr_err("session: %s: session was NULL", __func__); | |
e0508e67 | 197 | return SR_ERR_BUG; |
9f45fb3a UH |
198 | } |
199 | ||
0abee507 UH |
200 | if (!cb) { |
201 | sr_err("session: %s: cb was NULL", __func__); | |
202 | return SR_ERR_ARG; | |
203 | } | |
9f45fb3a | 204 | |
62c82025 | 205 | session->datafeed_callbacks = |
d08490aa | 206 | g_slist_append(session->datafeed_callbacks, cb); |
e0508e67 UH |
207 | |
208 | return SR_OK; | |
a1bb33af UH |
209 | } |
210 | ||
9f45fb3a UH |
211 | /** |
212 | * TODO. | |
213 | */ | |
e0508e67 | 214 | static int sr_session_run_poll(void) |
544a4582 | 215 | { |
544a4582 BV |
216 | int ret, i; |
217 | ||
544a4582 | 218 | while (session->running) { |
0687dfcd | 219 | ret = g_poll(pollfds, num_sources, source_timeout); |
544a4582 BV |
220 | |
221 | for (i = 0; i < num_sources; i++) { | |
0687dfcd | 222 | if (pollfds[i].revents > 0 || (ret == 0 |
544a4582 BV |
223 | && source_timeout == sources[i].timeout)) { |
224 | /* | |
225 | * Invoke the source's callback on an event, | |
226 | * or if the poll timeout out and this source | |
227 | * asked for that timeout. | |
228 | */ | |
0687dfcd | 229 | if (!sources[i].cb(pollfds[i].fd, pollfds[i].revents, |
1f9813eb | 230 | sources[i].cb_data)) |
0687dfcd | 231 | sr_session_source_remove(pollfds[i].fd); |
544a4582 BV |
232 | } |
233 | } | |
234 | } | |
e0508e67 UH |
235 | |
236 | return SR_OK; | |
544a4582 BV |
237 | } |
238 | ||
9f45fb3a UH |
239 | /** |
240 | * Start a session. | |
241 | * | |
a1645fcd | 242 | * There can only be one session at a time. |
9f45fb3a UH |
243 | * |
244 | * @return SR_OK upon success, SR_ERR upon errors. | |
245 | */ | |
1a081ca6 | 246 | SR_API int sr_session_start(void) |
7d658874 | 247 | { |
bb7ef793 | 248 | struct sr_dev *dev; |
7d658874 BV |
249 | GSList *l; |
250 | int ret; | |
251 | ||
9f45fb3a UH |
252 | if (!session) { |
253 | sr_err("session: %s: session was NULL; a session must be " | |
254 | "created first, before starting it.", __func__); | |
0abee507 | 255 | return SR_ERR_BUG; |
9f45fb3a UH |
256 | } |
257 | ||
bb7ef793 | 258 | if (!session->devs) { |
9f45fb3a | 259 | /* TODO: Actually the case? */ |
bb7ef793 | 260 | sr_err("session: %s: session->devs was NULL; a session " |
9f45fb3a | 261 | "cannot be started without devices.", __func__); |
0abee507 | 262 | return SR_ERR_BUG; |
9f45fb3a UH |
263 | } |
264 | ||
c09f0b57 | 265 | /* TODO: Check driver_index validity? */ |
9f45fb3a | 266 | |
b08024a8 | 267 | sr_info("session: starting"); |
9f45fb3a | 268 | |
bb7ef793 UH |
269 | for (l = session->devs; l; l = l->next) { |
270 | dev = l->data; | |
271 | /* TODO: Check for dev != NULL. */ | |
c09f0b57 UH |
272 | if ((ret = dev->driver->dev_acquisition_start( |
273 | dev->driver_index, dev)) != SR_OK) { | |
446a0372 | 274 | sr_err("session: %s: could not start an acquisition " |
9f45fb3a | 275 | "(%d)", __func__, ret); |
7d658874 | 276 | break; |
9f45fb3a | 277 | } |
7d658874 BV |
278 | } |
279 | ||
9f45fb3a UH |
280 | /* TODO: What if there are multiple devices? Which return code? */ |
281 | ||
7d658874 BV |
282 | return ret; |
283 | } | |
284 | ||
9f45fb3a UH |
285 | /** |
286 | * Run the session. | |
287 | * | |
9f45fb3a UH |
288 | * TODO: Various error checks etc. |
289 | * | |
e0508e67 | 290 | * @return SR_OK upon success, SR_ERR_BUG upon errors. |
9f45fb3a | 291 | */ |
1a081ca6 | 292 | SR_API int sr_session_run(void) |
7d658874 | 293 | { |
9f45fb3a UH |
294 | if (!session) { |
295 | sr_err("session: %s: session was NULL; a session must be " | |
296 | "created first, before running it.", __func__); | |
e0508e67 | 297 | return SR_ERR_BUG; |
9f45fb3a UH |
298 | } |
299 | ||
bb7ef793 | 300 | if (!session->devs) { |
9f45fb3a | 301 | /* TODO: Actually the case? */ |
bb7ef793 | 302 | sr_err("session: %s: session->devs was NULL; a session " |
9f45fb3a | 303 | "cannot be run without devices.", __func__); |
e0508e67 | 304 | return SR_ERR_BUG; |
9f45fb3a UH |
305 | } |
306 | ||
b08024a8 | 307 | sr_info("session: running"); |
7d658874 BV |
308 | session->running = TRUE; |
309 | ||
9f45fb3a | 310 | /* Do we have real sources? */ |
0687dfcd | 311 | if (num_sources == 1 && pollfds[0].fd == -1) { |
9f45fb3a | 312 | /* Dummy source, freewheel over it. */ |
7d658874 | 313 | while (session->running) |
1f9813eb | 314 | sources[0].cb(-1, 0, 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 | * | |
44dae539 UH |
326 | * This requests the current session be stopped as soon as possible, for |
327 | * example on receiving an SR_DF_END packet. | |
e0508e67 UH |
328 | * |
329 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. | |
9f45fb3a | 330 | */ |
1a081ca6 | 331 | SR_API int sr_session_halt(void) |
544a4582 | 332 | { |
9f45fb3a UH |
333 | if (!session) { |
334 | sr_err("session: %s: session was NULL", __func__); | |
e0508e67 | 335 | return SR_ERR_BUG; |
9f45fb3a UH |
336 | } |
337 | ||
b08024a8 | 338 | sr_info("session: halting"); |
544a4582 | 339 | session->running = FALSE; |
9f45fb3a | 340 | |
e0508e67 | 341 | return SR_OK; |
544a4582 BV |
342 | } |
343 | ||
9f45fb3a UH |
344 | /** |
345 | * Stop the current session. | |
346 | * | |
a1645fcd | 347 | * The current session is stopped immediately, with all acquisition sessions |
c09f0b57 | 348 | * being stopped and hardware drivers cleaned up. |
9f45fb3a | 349 | * |
e0508e67 | 350 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 351 | */ |
1a081ca6 | 352 | SR_API int sr_session_stop(void) |
a1bb33af | 353 | { |
bb7ef793 | 354 | struct sr_dev *dev; |
a1bb33af UH |
355 | GSList *l; |
356 | ||
9f45fb3a UH |
357 | if (!session) { |
358 | sr_err("session: %s: session was NULL", __func__); | |
e0508e67 | 359 | return SR_ERR_BUG; |
9f45fb3a UH |
360 | } |
361 | ||
b08024a8 | 362 | sr_info("session: stopping"); |
544a4582 | 363 | session->running = FALSE; |
e0508e67 | 364 | |
bb7ef793 UH |
365 | for (l = session->devs; l; l = l->next) { |
366 | dev = l->data; | |
367 | /* Check for dev != NULL. */ | |
c09f0b57 UH |
368 | if (dev->driver) { |
369 | if (dev->driver->dev_acquisition_stop) | |
370 | dev->driver->dev_acquisition_stop(dev->driver_index, dev); | |
371 | if (dev->driver->cleanup) | |
372 | dev->driver->cleanup(); | |
8c76be53 | 373 | } |
a1bb33af | 374 | } |
9f45fb3a | 375 | |
e0508e67 | 376 | return SR_OK; |
a1bb33af UH |
377 | } |
378 | ||
9f45fb3a | 379 | /** |
a1645fcd | 380 | * Debug helper. |
9f45fb3a | 381 | * |
996b0c72 | 382 | * @param packet The packet to show debugging information for. |
9f45fb3a | 383 | */ |
18beaeff | 384 | static void datafeed_dump(struct sr_datafeed_packet *packet) |
7d2afd6c BV |
385 | { |
386 | struct sr_datafeed_logic *logic; | |
ee7489d2 | 387 | struct sr_datafeed_analog *analog; |
7d2afd6c BV |
388 | |
389 | switch (packet->type) { | |
390 | case SR_DF_HEADER: | |
391 | sr_dbg("bus: received SR_DF_HEADER"); | |
392 | break; | |
393 | case SR_DF_TRIGGER: | |
01469707 | 394 | sr_dbg("bus: received SR_DF_TRIGGER"); |
7d2afd6c | 395 | break; |
ee7489d2 BV |
396 | case SR_DF_META_LOGIC: |
397 | sr_dbg("bus: received SR_DF_META_LOGIC"); | |
398 | break; | |
7d2afd6c BV |
399 | case SR_DF_LOGIC: |
400 | logic = packet->payload; | |
e0508e67 | 401 | /* TODO: Check for logic != NULL. */ |
01469707 | 402 | sr_dbg("bus: received SR_DF_LOGIC %" PRIu64 " bytes", logic->length); |
7d2afd6c | 403 | break; |
ee7489d2 BV |
404 | case SR_DF_META_ANALOG: |
405 | sr_dbg("bus: received SR_DF_META_LOGIC"); | |
406 | break; | |
407 | case SR_DF_ANALOG: | |
408 | analog = packet->payload; | |
409 | /* TODO: Check for analog != NULL. */ | |
410 | sr_dbg("bus: received SR_DF_ANALOG %d samples", analog->num_samples); | |
411 | break; | |
7d2afd6c BV |
412 | case SR_DF_END: |
413 | sr_dbg("bus: received SR_DF_END"); | |
414 | break; | |
6ea7669c BV |
415 | case SR_DF_FRAME_BEGIN: |
416 | sr_dbg("bus: received SR_DF_FRAME_BEGIN"); | |
417 | break; | |
418 | case SR_DF_FRAME_END: | |
419 | sr_dbg("bus: received SR_DF_FRAME_END"); | |
420 | break; | |
7d2afd6c | 421 | default: |
18beaeff | 422 | sr_dbg("bus: received unknown packet type %d", packet->type); |
9f45fb3a | 423 | break; |
7d2afd6c | 424 | } |
7d2afd6c BV |
425 | } |
426 | ||
9f45fb3a | 427 | /** |
a1645fcd BV |
428 | * Send a packet to whatever is listening on the datafeed bus. |
429 | * | |
430 | * Hardware drivers use this to send a data packet to the frontend. | |
9f45fb3a | 431 | * |
bb7ef793 | 432 | * @param dev TODO. |
31ccebc4 | 433 | * @param packet The datafeed packet to send to the session bus. |
44dae539 | 434 | * |
e0508e67 | 435 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. |
9f45fb3a | 436 | */ |
31ccebc4 UH |
437 | SR_PRIV int sr_session_send(struct sr_dev *dev, |
438 | struct sr_datafeed_packet *packet) | |
a1bb33af UH |
439 | { |
440 | GSList *l; | |
d08490aa | 441 | sr_datafeed_callback_t cb; |
a1bb33af | 442 | |
bb7ef793 UH |
443 | if (!dev) { |
444 | sr_err("session: %s: dev was NULL", __func__); | |
e0508e67 | 445 | return SR_ERR_ARG; |
9f45fb3a UH |
446 | } |
447 | ||
e0508e67 UH |
448 | if (!packet) { |
449 | sr_err("session: %s: packet was NULL", __func__); | |
450 | return SR_ERR_ARG; | |
9f45fb3a UH |
451 | } |
452 | ||
62c82025 | 453 | for (l = session->datafeed_callbacks; l; l = l->next) { |
18beaeff BV |
454 | if (sr_log_loglevel_get() >= SR_LOG_DBG) |
455 | datafeed_dump(packet); | |
a1bb33af | 456 | cb = l->data; |
9f45fb3a | 457 | /* TODO: Check for cb != NULL. */ |
bb7ef793 | 458 | cb(dev, packet); |
a1bb33af | 459 | } |
9f45fb3a | 460 | |
e0508e67 | 461 | return SR_OK; |
a1bb33af UH |
462 | } |
463 | ||
aac0ea25 | 464 | static int _sr_session_source_add(GPollFD *pollfd, int timeout, |
1a895c61 | 465 | sr_receive_data_callback_t cb, void *cb_data, gintptr poll_object) |
544a4582 BV |
466 | { |
467 | struct source *new_sources, *s; | |
aac0ea25 | 468 | GPollFD *new_pollfds; |
544a4582 | 469 | |
d08490aa UH |
470 | if (!cb) { |
471 | sr_err("session: %s: cb was NULL", __func__); | |
e0508e67 | 472 | return SR_ERR_ARG; |
9f45fb3a UH |
473 | } |
474 | ||
1f9813eb | 475 | /* Note: cb_data can be NULL, that's not a bug. */ |
9f45fb3a | 476 | |
0687dfcd LPC |
477 | new_pollfds = g_try_realloc(pollfds, sizeof(GPollFD) * (num_sources + 1)); |
478 | if (!new_pollfds) { | |
1a895c61 | 479 | sr_err("session: %s: new_pollfds malloc failed", __func__); |
0687dfcd LPC |
480 | return SR_ERR_MALLOC; |
481 | } | |
482 | ||
2bccd322 | 483 | new_sources = g_try_realloc(sources, sizeof(struct source) * (num_sources + 1)); |
9f45fb3a UH |
484 | if (!new_sources) { |
485 | sr_err("session: %s: new_sources malloc failed", __func__); | |
e0508e67 | 486 | return SR_ERR_MALLOC; |
9f45fb3a | 487 | } |
544a4582 | 488 | |
aac0ea25 | 489 | new_pollfds[num_sources] = *pollfd; |
544a4582 | 490 | s = &new_sources[num_sources++]; |
544a4582 | 491 | s->timeout = timeout; |
d08490aa | 492 | s->cb = cb; |
1f9813eb | 493 | s->cb_data = cb_data; |
aac0ea25 | 494 | s->poll_object = poll_object; |
0687dfcd | 495 | pollfds = new_pollfds; |
544a4582 BV |
496 | sources = new_sources; |
497 | ||
498 | if (timeout != source_timeout && timeout > 0 | |
499 | && (source_timeout == -1 || timeout < source_timeout)) | |
500 | source_timeout = timeout; | |
9f45fb3a | 501 | |
e0508e67 | 502 | return SR_OK; |
544a4582 BV |
503 | } |
504 | ||
9f45fb3a | 505 | /** |
aac0ea25 | 506 | * Add a event source for a file descriptor. |
9f45fb3a | 507 | * |
aac0ea25 LPC |
508 | * @param fd The file descriptor. |
509 | * @param events Events to check for. | |
510 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
511 | * @param cb Callback function to add. Must not be NULL. | |
512 | * @param cb_data Data for the callback function. Can be NULL. | |
9f45fb3a | 513 | * |
aac0ea25 LPC |
514 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
515 | * SR_ERR_MALLOC upon memory allocation errors. | |
516 | */ | |
517 | SR_API int sr_session_source_add(int fd, int events, int timeout, | |
518 | sr_receive_data_callback_t cb, void *cb_data) | |
519 | { | |
520 | GPollFD p; | |
521 | ||
aac0ea25 LPC |
522 | p.fd = fd; |
523 | p.events = events; | |
aac0ea25 LPC |
524 | |
525 | return _sr_session_source_add(&p, timeout, cb, cb_data, (gintptr)fd); | |
526 | } | |
527 | ||
528 | /** | |
1a895c61 | 529 | * Add an event source for a GPollFD. |
aac0ea25 LPC |
530 | * |
531 | * TODO: More error checks etc. | |
532 | * | |
533 | * @param pollfd The GPollFD. | |
534 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
535 | * @param cb Callback function to add. Must not be NULL. | |
536 | * @param cb_data Data for the callback function. Can be NULL. | |
44dae539 | 537 | * |
e0508e67 | 538 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
aac0ea25 | 539 | * SR_ERR_MALLOC upon memory allocation errors. |
9f45fb3a | 540 | */ |
aac0ea25 LPC |
541 | SR_API int sr_session_source_add_pollfd(GPollFD *pollfd, int timeout, |
542 | sr_receive_data_callback_t cb, void *cb_data) | |
543 | { | |
1a895c61 UH |
544 | return _sr_session_source_add(pollfd, timeout, cb, |
545 | cb_data, (gintptr)pollfd); | |
aac0ea25 LPC |
546 | } |
547 | ||
548 | /** | |
1a895c61 | 549 | * Add an event source for a GIOChannel. |
aac0ea25 LPC |
550 | * |
551 | * TODO: More error checks etc. | |
552 | * | |
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 | |
568 | g_io_channel_win32_make_pollfd(channel, | |
569 | events, &p); | |
570 | #else | |
571 | p.fd = g_io_channel_unix_get_fd(channel); | |
572 | p.events = events; | |
573 | #endif | |
574 | ||
575 | return _sr_session_source_add(&p, timeout, cb, cb_data, (gintptr)channel); | |
576 | } | |
577 | ||
578 | ||
579 | static int _sr_session_source_remove(gintptr poll_object) | |
544a4582 BV |
580 | { |
581 | struct source *new_sources; | |
0687dfcd LPC |
582 | GPollFD *new_pollfds; |
583 | int old; | |
544a4582 | 584 | |
e0508e67 UH |
585 | if (!sources) { |
586 | sr_err("session: %s: sources was NULL", __func__); | |
0abee507 | 587 | return SR_ERR_BUG; |
e0508e67 UH |
588 | } |
589 | ||
2bccd322 | 590 | for (old = 0; old < num_sources; old++) { |
aac0ea25 | 591 | if (sources[old].poll_object == poll_object) |
2bccd322 | 592 | break; |
9f45fb3a UH |
593 | } |
594 | ||
2bccd322 LPC |
595 | /* fd not found, nothing to do */ |
596 | if (old == num_sources) | |
597 | return SR_OK; | |
598 | ||
599 | num_sources -= 1; | |
600 | ||
601 | if (old != num_sources) { | |
0687dfcd LPC |
602 | memmove(&pollfds[old], &pollfds[old+1], |
603 | (num_sources - old) * sizeof(GPollFD)); | |
2bccd322 LPC |
604 | memmove(&sources[old], &sources[old+1], |
605 | (num_sources - old) * sizeof(struct source)); | |
9f45fb3a | 606 | } |
544a4582 | 607 | |
93b03d09 | 608 | new_pollfds = g_try_realloc(pollfds, sizeof(GPollFD) * num_sources); |
0687dfcd | 609 | if (!new_pollfds && num_sources > 0) { |
1a895c61 | 610 | sr_err("session: %s: new_pollfds malloc failed", __func__); |
0687dfcd LPC |
611 | return SR_ERR_MALLOC; |
612 | } | |
613 | ||
614 | new_sources = g_try_realloc(sources, sizeof(struct source) * num_sources); | |
2bccd322 LPC |
615 | if (!new_sources && num_sources > 0) { |
616 | sr_err("session: %s: new_sources malloc failed", __func__); | |
617 | return SR_ERR_MALLOC; | |
544a4582 | 618 | } |
e0508e67 | 619 | |
0687dfcd | 620 | pollfds = new_pollfds; |
2bccd322 LPC |
621 | sources = new_sources; |
622 | ||
e0508e67 | 623 | return SR_OK; |
544a4582 | 624 | } |
aac0ea25 LPC |
625 | |
626 | /* | |
627 | * Remove the source belonging to the specified file descriptor. | |
628 | * | |
629 | * TODO: More error checks. | |
630 | * | |
1a895c61 | 631 | * @param fd The file descriptor for which the source should be removed. |
aac0ea25 LPC |
632 | * |
633 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
634 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
635 | * internal errors. | |
636 | */ | |
637 | SR_API int sr_session_source_remove(int fd) | |
638 | { | |
639 | return _sr_session_source_remove((gintptr)fd); | |
640 | } | |
641 | ||
642 | /** | |
643 | * Remove the source belonging to the specified poll descriptor. | |
644 | * | |
645 | * TODO: More error checks. | |
646 | * | |
647 | * @param pollfd The poll descriptor for which the source should be removed. | |
648 | * | |
649 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
650 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
651 | * internal errors. | |
652 | */ | |
653 | SR_API int sr_session_source_remove_pollfd(GPollFD *pollfd) | |
654 | { | |
655 | return _sr_session_source_remove((gintptr)pollfd); | |
656 | } | |
657 | ||
658 | /* | |
659 | * Remove the source belonging to the specified channel. | |
660 | * | |
661 | * TODO: More error checks. | |
662 | * | |
1a895c61 | 663 | * @param channel The channel for which the source should be removed. |
aac0ea25 LPC |
664 | * |
665 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
666 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
667 | * internal errors. | |
668 | */ | |
669 | SR_API int sr_session_source_remove_channel(GIOChannel *channel) | |
670 | { | |
671 | return _sr_session_source_remove((gintptr)channel); | |
672 | } |