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Uwe Hermanna1bb33a2010-04-02 20:18:27 +02001/*
Uwe Hermann50985c22013-04-23 22:24:30 +02002 * This file is part of the libsigrok project.
Uwe Hermanna1bb33a2010-04-02 20:18:27 +02003 *
Bert Vermeulenc73d2ea2012-02-13 14:31:51 +01004 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
Uwe Hermanna1bb33a2010-04-02 20:18:27 +02005 *
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>
Bert Vermeulen544a4582011-01-30 02:40:55 +010024#include <glib.h>
Bert Vermeulen45c59c82012-07-05 00:55:07 +020025#include "libsigrok.h"
26#include "libsigrok-internal.h"
Bert Vermeulenaa4b1102011-01-24 07:46:16 +010027
Martin Ling3544f842013-12-23 03:38:35 +000028#define LOG_PREFIX "session"
Uwe Hermanna421dc12013-01-29 12:55:00 +010029
Uwe Hermann7b870c32012-10-21 16:13:36 +020030/**
Uwe Hermann393fb9c2012-10-22 00:30:12 +020031 * @file
32 *
33 * Creating, using, or destroying libsigrok sessions.
34 */
35
36/**
Uwe Hermann7b870c32012-10-21 16:13:36 +020037 * @defgroup grp_session Session handling
38 *
39 * Creating, using, or destroying libsigrok sessions.
40 *
41 * @{
42 */
43
Bert Vermeulen544a4582011-01-30 02:40:55 +010044struct source {
Bert Vermeulen544a4582011-01-30 02:40:55 +010045 int timeout;
Uwe Hermannd08490a2012-02-29 21:56:24 +010046 sr_receive_data_callback_t cb;
Uwe Hermann1f9813e2012-02-29 22:32:34 +010047 void *cb_data;
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +020048
49 /* This is used to keep track of the object (fd, pollfd or channel) which is
50 * being polled and will be used to match the source when removing it again.
51 */
52 gintptr poll_object;
Bert Vermeulen544a4582011-01-30 02:40:55 +010053};
54
Martin Ling27264742013-04-15 21:08:55 +010055struct datafeed_callback {
56 sr_datafeed_callback_t cb;
57 void *cb_data;
58};
59
Bert Vermeulen7d658872011-01-31 22:34:14 +010060/* There can only be one session at a time. */
Uwe Hermanna0ecd832011-12-28 22:55:21 +010061/* 'session' is not static, it's used elsewhere (via 'extern'). */
Uwe Hermann2872d212011-02-08 17:50:29 +010062struct sr_session *session;
Bert Vermeulen544a4582011-01-30 02:40:55 +010063
Uwe Hermann9f45fb32012-01-02 14:15:25 +010064/**
65 * Create a new session.
66 *
Uwe Hermann6b2d8d32012-10-21 23:24:42 +020067 * @todo Should it use the file-global "session" variable or take an argument?
Uwe Hermann9f45fb32012-01-02 14:15:25 +010068 * The same question applies to all the other session functions.
69 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +010070 * @retval NULL Error.
Bert Vermeulen98582bf2013-12-09 22:49:12 +010071 * @retval other A pointer to the newly allocated session.
Uwe Hermann9f45fb32012-01-02 14:15:25 +010072 */
Uwe Hermann1a081ca2012-02-01 23:40:35 +010073SR_API struct sr_session *sr_session_new(void)
Uwe Hermanna1bb33a2010-04-02 20:18:27 +020074{
Uwe Hermann133a37b2012-02-11 20:06:46 +010075 if (!(session = g_try_malloc0(sizeof(struct sr_session)))) {
Uwe Hermanna421dc12013-01-29 12:55:00 +010076 sr_err("Session malloc failed.");
77 return NULL;
Uwe Hermann9f45fb32012-01-02 14:15:25 +010078 }
Uwe Hermanna1bb33a2010-04-02 20:18:27 +020079
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +020080 session->source_timeout = -1;
Bert Vermeulen54518162013-09-21 17:44:49 +020081 session->running = FALSE;
Alexandru Gagniuc33c6e4c2013-02-02 00:50:00 -060082 session->abort_session = FALSE;
83 g_mutex_init(&session->stop_mutex);
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +020084
Uwe Hermanna1bb33a2010-04-02 20:18:27 +020085 return session;
86}
87
Uwe Hermann9f45fb32012-01-02 14:15:25 +010088/**
89 * Destroy the current session.
Uwe Hermann9f45fb32012-01-02 14:15:25 +010090 * This frees up all memory used by the session.
91 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +010092 * @retval SR_OK Success.
93 * @retval SR_ERR_BUG No session exists.
Uwe Hermann9f45fb32012-01-02 14:15:25 +010094 */
Uwe Hermann1a081ca2012-02-01 23:40:35 +010095SR_API int sr_session_destroy(void)
Uwe Hermanna1bb33a2010-04-02 20:18:27 +020096{
Uwe Hermann9f45fb32012-01-02 14:15:25 +010097 if (!session) {
Uwe Hermanna421dc12013-01-29 12:55:00 +010098 sr_err("%s: session was NULL", __func__);
Uwe Hermanne0508e62012-01-07 17:08:54 +010099 return SR_ERR_BUG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100100 }
101
Lars-Peter Clausened229aa2012-07-05 21:15:07 +0200102 sr_session_dev_remove_all();
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200103
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100104 /* TODO: Error checks needed? */
105
Alexandru Gagniuc33c6e4c2013-02-02 00:50:00 -0600106 g_mutex_clear(&session->stop_mutex);
107
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200108 g_free(session);
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100109 session = NULL;
Uwe Hermanne0508e62012-01-07 17:08:54 +0100110
111 return SR_OK;
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200112}
113
Uwe Hermann961009b2013-02-01 22:58:54 +0100114/**
Uwe Hermann6b2d8d32012-10-21 23:24:42 +0200115 * Remove all the devices from the current session.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100116 *
117 * The session itself (i.e., the struct sr_session) is not free'd and still
118 * exists after this function returns.
119 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100120 * @retval SR_OK Success.
121 * @retval SR_ERR_BUG No session exists.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100122 */
Uwe Hermann01c3e9d2012-03-28 21:55:48 +0200123SR_API int sr_session_dev_remove_all(void)
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200124{
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100125 if (!session) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100126 sr_err("%s: session was NULL", __func__);
Uwe Hermanne0508e62012-01-07 17:08:54 +0100127 return SR_ERR_BUG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100128 }
129
Bert Vermeulen681803d2013-04-28 22:35:42 +0200130 g_slist_free(session->devs);
Uwe Hermannbb7ef792012-02-17 22:25:01 +0100131 session->devs = NULL;
Uwe Hermanne0508e62012-01-07 17:08:54 +0100132
133 return SR_OK;
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200134}
135
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100136/**
Uwe Hermann9c5332d2012-10-21 16:52:56 +0200137 * Add a device instance to the current session.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100138 *
Uwe Hermann9c5332d2012-10-21 16:52:56 +0200139 * @param sdi The device instance to add to the current session. Must not
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200140 * be NULL. Also, sdi->driver and sdi->driver->dev_open must
141 * not be NULL.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100142 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100143 * @retval SR_OK Success.
144 * @retval SR_ERR_ARG Invalid argument.
145 * @retval SR_ERR_BUG No session exists.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100146 */
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200147SR_API int sr_session_dev_add(const struct sr_dev_inst *sdi)
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200148{
Bert Vermeulen54518162013-09-21 17:44:49 +0200149 int ret;
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200150
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200151 if (!sdi) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100152 sr_err("%s: sdi was NULL", __func__);
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100153 return SR_ERR_ARG;
154 }
155
Uwe Hermannd6eb0c32012-03-18 12:57:34 +0100156 if (!session) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100157 sr_err("%s: session was NULL", __func__);
Uwe Hermannd6eb0c32012-03-18 12:57:34 +0100158 return SR_ERR_BUG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100159 }
160
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200161 /* If sdi->driver is NULL, this is a virtual device. */
162 if (!sdi->driver) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100163 sr_dbg("%s: sdi->driver was NULL, this seems to be "
Uwe Hermannd6eb0c32012-03-18 12:57:34 +0100164 "a virtual device; continuing", __func__);
165 /* Just add the device, don't run dev_open(). */
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200166 session->devs = g_slist_append(session->devs, (gpointer)sdi);
Uwe Hermannd6eb0c32012-03-18 12:57:34 +0100167 return SR_OK;
168 }
169
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200170 /* sdi->driver is non-NULL (i.e. we have a real device). */
171 if (!sdi->driver->dev_open) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100172 sr_err("%s: sdi->driver->dev_open was NULL", __func__);
Uwe Hermann8ec95d22012-03-21 19:28:43 +0100173 return SR_ERR_BUG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100174 }
175
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200176 session->devs = g_slist_append(session->devs, (gpointer)sdi);
Bert Vermeulenaa4b1102011-01-24 07:46:16 +0100177
Bert Vermeulen54518162013-09-21 17:44:49 +0200178 if (session->running) {
179 /* Adding a device to a running session. Start acquisition
180 * on that device now. */
181 if ((ret = sdi->driver->dev_acquisition_start(sdi,
182 (void *)sdi)) != SR_OK)
183 sr_err("Failed to start acquisition of device in "
184 "running session: %d", ret);
185 }
186
Uwe Hermanne46b8fb2011-01-29 16:23:12 +0100187 return SR_OK;
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200188}
189
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100190/**
Bert Vermeulen2bb311b2013-09-02 14:24:32 +0200191 * List all device instances attached to the current session.
192 *
193 * @param devlist A pointer where the device instance list will be
194 * stored on return. If no devices are in the session,
195 * this will be NULL. Each element in the list points
196 * to a struct sr_dev_inst *.
197 * The list must be freed by the caller, but not the
198 * elements pointed to.
199 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100200 * @retval SR_OK Success.
201 * @retval SR_ERR Invalid argument.
Bert Vermeulen2bb311b2013-09-02 14:24:32 +0200202 */
203SR_API int sr_session_dev_list(GSList **devlist)
204{
205
206 *devlist = NULL;
207
208 if (!session)
209 return SR_ERR;
210
211 *devlist = g_slist_copy(session->devs);
212
213 return SR_OK;
214}
215
216/**
Uwe Hermann01c3e9d2012-03-28 21:55:48 +0200217 * Remove all datafeed callbacks in the current session.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100218 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100219 * @retval SR_OK Success.
220 * @retval SR_ERR_BUG No session exists.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100221 */
Uwe Hermann01c3e9d2012-03-28 21:55:48 +0200222SR_API int sr_session_datafeed_callback_remove_all(void)
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200223{
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100224 if (!session) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100225 sr_err("%s: session was NULL", __func__);
Uwe Hermanne0508e62012-01-07 17:08:54 +0100226 return SR_ERR_BUG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100227 }
228
Martin Ling27264742013-04-15 21:08:55 +0100229 g_slist_free_full(session->datafeed_callbacks, g_free);
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200230 session->datafeed_callbacks = NULL;
Uwe Hermanne0508e62012-01-07 17:08:54 +0100231
232 return SR_OK;
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200233}
234
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100235/**
236 * Add a datafeed callback to the current session.
237 *
Uwe Hermannd08490a2012-02-29 21:56:24 +0100238 * @param cb Function to call when a chunk of data is received.
Uwe Hermann0abee502012-03-04 15:08:11 +0100239 * Must not be NULL.
Uwe Hermann85222792013-04-16 12:48:58 +0200240 * @param cb_data Opaque pointer passed in by the caller.
Bert Vermeulena1645fc2012-02-13 03:36:32 +0100241 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100242 * @retval SR_OK Success.
243 * @retval SR_ERR_BUG No session exists.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100244 */
Martin Ling27264742013-04-15 21:08:55 +0100245SR_API int sr_session_datafeed_callback_add(sr_datafeed_callback_t cb, void *cb_data)
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200246{
Martin Ling27264742013-04-15 21:08:55 +0100247 struct datafeed_callback *cb_struct;
248
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100249 if (!session) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100250 sr_err("%s: session was NULL", __func__);
Uwe Hermanne0508e62012-01-07 17:08:54 +0100251 return SR_ERR_BUG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100252 }
253
Uwe Hermann0abee502012-03-04 15:08:11 +0100254 if (!cb) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100255 sr_err("%s: cb was NULL", __func__);
Uwe Hermann0abee502012-03-04 15:08:11 +0100256 return SR_ERR_ARG;
257 }
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100258
Martin Ling27264742013-04-15 21:08:55 +0100259 if (!(cb_struct = g_try_malloc0(sizeof(struct datafeed_callback))))
260 return SR_ERR_MALLOC;
261
262 cb_struct->cb = cb;
263 cb_struct->cb_data = cb_data;
264
Uwe Hermann62c82022010-04-15 20:16:53 +0200265 session->datafeed_callbacks =
Martin Ling27264742013-04-15 21:08:55 +0100266 g_slist_append(session->datafeed_callbacks, cb_struct);
Uwe Hermanne0508e62012-01-07 17:08:54 +0100267
268 return SR_OK;
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200269}
270
Bert Vermeulenb483be72013-07-15 14:14:28 +0200271/**
272 * Call every device in the session's callback.
273 *
274 * For sessions not driven by select loops such as sr_session_run(),
275 * but driven by another scheduler, this can be used to poll the devices
276 * from within that scheduler.
277 *
Bert Vermeulenf6eb2cb2013-07-18 15:06:06 +0200278 * @param block If TRUE, this call will wait for any of the session's
279 * sources to fire an event on the file descriptors, or
280 * any of their timeouts to activate. In other words, this
281 * can be used as a select loop.
282 * If FALSE, all sources have their callback run, regardless
283 * of file descriptor or timeout status.
284 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100285 * @retval SR_OK Success.
286 * @retval SR_ERR Error occured.
Bert Vermeulenb483be72013-07-15 14:14:28 +0200287 */
Uwe Hermann1861be02013-08-07 00:34:06 +0200288static int sr_session_iteration(gboolean block)
Bert Vermeulen544a4582011-01-30 02:40:55 +0100289{
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200290 unsigned int i;
291 int ret;
Bert Vermeulen544a4582011-01-30 02:40:55 +0100292
Bert Vermeulenb483be72013-07-15 14:14:28 +0200293 ret = g_poll(session->pollfds, session->num_sources,
294 block ? session->source_timeout : 0);
295 for (i = 0; i < session->num_sources; i++) {
296 if (session->pollfds[i].revents > 0 || (ret == 0
297 && session->source_timeout == session->sources[i].timeout)) {
Alexandru Gagniuc33c6e4c2013-02-02 00:50:00 -0600298 /*
Bert Vermeulenb483be72013-07-15 14:14:28 +0200299 * Invoke the source's callback on an event,
300 * or if the poll timed out and this source
301 * asked for that timeout.
Alexandru Gagniuc33c6e4c2013-02-02 00:50:00 -0600302 */
Bert Vermeulenb483be72013-07-15 14:14:28 +0200303 if (!session->sources[i].cb(session->pollfds[i].fd,
304 session->pollfds[i].revents,
305 session->sources[i].cb_data))
306 sr_session_source_remove(session->sources[i].poll_object);
Bert Vermeulen544a4582011-01-30 02:40:55 +0100307 }
Bert Vermeulenb483be72013-07-15 14:14:28 +0200308 /*
309 * We want to take as little time as possible to stop
310 * the session if we have been told to do so. Therefore,
311 * we check the flag after processing every source, not
312 * just once per main event loop.
313 */
314 g_mutex_lock(&session->stop_mutex);
315 if (session->abort_session) {
316 sr_session_stop_sync();
317 /* But once is enough. */
318 session->abort_session = FALSE;
319 }
320 g_mutex_unlock(&session->stop_mutex);
Bert Vermeulen544a4582011-01-30 02:40:55 +0100321 }
Uwe Hermanne0508e62012-01-07 17:08:54 +0100322
323 return SR_OK;
Bert Vermeulen544a4582011-01-30 02:40:55 +0100324}
325
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100326/**
327 * Start a session.
328 *
Bert Vermeulena1645fc2012-02-13 03:36:32 +0100329 * There can only be one session at a time.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100330 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100331 * @retval SR_OK Success.
332 * @retval SR_ERR Error occured.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100333 */
Uwe Hermann1a081ca2012-02-01 23:40:35 +0100334SR_API int sr_session_start(void)
Bert Vermeulen7d658872011-01-31 22:34:14 +0100335{
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200336 struct sr_dev_inst *sdi;
Bert Vermeulen7d658872011-01-31 22:34:14 +0100337 GSList *l;
338 int ret;
339
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100340 if (!session) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100341 sr_err("%s: session was NULL; a session must be "
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200342 "created before starting it.", __func__);
Uwe Hermann0abee502012-03-04 15:08:11 +0100343 return SR_ERR_BUG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100344 }
345
Uwe Hermannbb7ef792012-02-17 22:25:01 +0100346 if (!session->devs) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100347 sr_err("%s: session->devs was NULL; a session "
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100348 "cannot be started without devices.", __func__);
Uwe Hermann0abee502012-03-04 15:08:11 +0100349 return SR_ERR_BUG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100350 }
351
Uwe Hermannc7142602013-02-07 09:16:28 +0100352 sr_info("Starting.");
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100353
Uwe Hermannb7c3e842012-12-31 21:05:11 +0100354 ret = SR_OK;
Uwe Hermannbb7ef792012-02-17 22:25:01 +0100355 for (l = session->devs; l; l = l->next) {
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200356 sdi = l->data;
357 if ((ret = sdi->driver->dev_acquisition_start(sdi, sdi)) != SR_OK) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100358 sr_err("%s: could not start an acquisition "
Bert Vermeulen568dcac2013-10-16 10:40:38 +0200359 "(%s)", __func__, sr_strerror(ret));
Bert Vermeulen7d658872011-01-31 22:34:14 +0100360 break;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100361 }
Bert Vermeulen7d658872011-01-31 22:34:14 +0100362 }
363
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100364 /* TODO: What if there are multiple devices? Which return code? */
365
Bert Vermeulen7d658872011-01-31 22:34:14 +0100366 return ret;
367}
368
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100369/**
370 * Run the session.
371 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100372 * @retval SR_OK Success.
373 * @retval SR_ERR_BUG Error occured.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100374 */
Uwe Hermann1a081ca2012-02-01 23:40:35 +0100375SR_API int sr_session_run(void)
Bert Vermeulen7d658872011-01-31 22:34:14 +0100376{
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100377 if (!session) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100378 sr_err("%s: session was NULL; a session must be "
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100379 "created first, before running it.", __func__);
Uwe Hermanne0508e62012-01-07 17:08:54 +0100380 return SR_ERR_BUG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100381 }
382
Uwe Hermannbb7ef792012-02-17 22:25:01 +0100383 if (!session->devs) {
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100384 /* TODO: Actually the case? */
Uwe Hermanna421dc12013-01-29 12:55:00 +0100385 sr_err("%s: session->devs was NULL; a session "
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100386 "cannot be run without devices.", __func__);
Uwe Hermanne0508e62012-01-07 17:08:54 +0100387 return SR_ERR_BUG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100388 }
Bert Vermeulen54518162013-09-21 17:44:49 +0200389 session->running = TRUE;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100390
Uwe Hermanna421dc12013-01-29 12:55:00 +0100391 sr_info("Running.");
Bert Vermeulen7d658872011-01-31 22:34:14 +0100392
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100393 /* Do we have real sources? */
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200394 if (session->num_sources == 1 && session->pollfds[0].fd == -1) {
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100395 /* Dummy source, freewheel over it. */
Bert Vermeulen2cbeb2b2012-08-03 01:04:05 +0200396 while (session->num_sources)
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200397 session->sources[0].cb(-1, 0, session->sources[0].cb_data);
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100398 } else {
399 /* Real sources, use g_poll() main loop. */
Bert Vermeulenb483be72013-07-15 14:14:28 +0200400 while (session->num_sources)
401 sr_session_iteration(TRUE);
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100402 }
403
Uwe Hermanne0508e62012-01-07 17:08:54 +0100404 return SR_OK;
Bert Vermeulen7d658872011-01-31 22:34:14 +0100405}
406
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100407/**
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100408 * Stop the current session.
409 *
Bert Vermeulena1645fc2012-02-13 03:36:32 +0100410 * The current session is stopped immediately, with all acquisition sessions
Uwe Hermannc09f0b52012-02-28 23:52:30 +0100411 * being stopped and hardware drivers cleaned up.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100412 *
Alexandru Gagniuc33c6e4c2013-02-02 00:50:00 -0600413 * This must be called from within the session thread, to prevent freeing
414 * resources that the session thread will try to use.
415 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100416 * @retval SR_OK Success.
417 * @retval SR_ERR_BUG No session exists.
Bert Vermeulen72a08bc2013-09-25 11:51:38 +0200418 *
419 * @private
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100420 */
Alexandru Gagniuc33c6e4c2013-02-02 00:50:00 -0600421SR_PRIV int sr_session_stop_sync(void)
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200422{
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200423 struct sr_dev_inst *sdi;
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200424 GSList *l;
425
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100426 if (!session) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100427 sr_err("%s: session was NULL", __func__);
Uwe Hermanne0508e62012-01-07 17:08:54 +0100428 return SR_ERR_BUG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100429 }
430
Uwe Hermanna421dc12013-01-29 12:55:00 +0100431 sr_info("Stopping.");
Uwe Hermanne0508e62012-01-07 17:08:54 +0100432
Uwe Hermannbb7ef792012-02-17 22:25:01 +0100433 for (l = session->devs; l; l = l->next) {
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200434 sdi = l->data;
435 if (sdi->driver) {
436 if (sdi->driver->dev_acquisition_stop)
437 sdi->driver->dev_acquisition_stop(sdi, sdi);
Bert Vermeulen8c76be52012-01-08 22:05:00 +0100438 }
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200439 }
Bert Vermeulen54518162013-09-21 17:44:49 +0200440 session->running = FALSE;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100441
Uwe Hermanne0508e62012-01-07 17:08:54 +0100442 return SR_OK;
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200443}
444
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100445/**
Alexandru Gagniuc33c6e4c2013-02-02 00:50:00 -0600446 * Stop the current session.
447 *
448 * The current session is stopped immediately, with all acquisition sessions
449 * being stopped and hardware drivers cleaned up.
450 *
451 * If the session is run in a separate thread, this function will not block
452 * until the session is finished executing. It is the caller's responsibility
453 * to wait for the session thread to return before assuming that the session is
454 * completely decommissioned.
455 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100456 * @retval SR_OK Success.
457 * @retval SR_ERR_BUG No session exists.
Alexandru Gagniuc33c6e4c2013-02-02 00:50:00 -0600458 */
459SR_API int sr_session_stop(void)
460{
461 if (!session) {
462 sr_err("%s: session was NULL", __func__);
463 return SR_ERR_BUG;
464 }
465
466 g_mutex_lock(&session->stop_mutex);
467 session->abort_session = TRUE;
468 g_mutex_unlock(&session->stop_mutex);
469
470 return SR_OK;
471}
472
473/**
Bert Vermeulena1645fc2012-02-13 03:36:32 +0100474 * Debug helper.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100475 *
Bert Vermeulen996b0c72012-02-13 02:13:51 +0100476 * @param packet The packet to show debugging information for.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100477 */
Joel Holdsworthbf534572012-12-13 21:07:53 +0000478static void datafeed_dump(const struct sr_datafeed_packet *packet)
Bert Vermeulen7d2afd62011-06-20 11:42:43 +0200479{
Joel Holdsworthbf534572012-12-13 21:07:53 +0000480 const struct sr_datafeed_logic *logic;
481 const struct sr_datafeed_analog *analog;
Bert Vermeulen7d2afd62011-06-20 11:42:43 +0200482
483 switch (packet->type) {
484 case SR_DF_HEADER:
Uwe Hermanna421dc12013-01-29 12:55:00 +0100485 sr_dbg("bus: Received SR_DF_HEADER packet.");
Bert Vermeulen7d2afd62011-06-20 11:42:43 +0200486 break;
487 case SR_DF_TRIGGER:
Uwe Hermanna421dc12013-01-29 12:55:00 +0100488 sr_dbg("bus: Received SR_DF_TRIGGER packet.");
Bert Vermeulen7d2afd62011-06-20 11:42:43 +0200489 break;
Bert Vermeulenc71bac32013-01-20 16:37:23 +0100490 case SR_DF_META:
Uwe Hermanna421dc12013-01-29 12:55:00 +0100491 sr_dbg("bus: Received SR_DF_META packet.");
Bert Vermeulenee7489d2012-04-22 18:11:31 +0200492 break;
Bert Vermeulen7d2afd62011-06-20 11:42:43 +0200493 case SR_DF_LOGIC:
494 logic = packet->payload;
Uwe Hermanna421dc12013-01-29 12:55:00 +0100495 sr_dbg("bus: Received SR_DF_LOGIC packet (%" PRIu64 " bytes).",
496 logic->length);
Bert Vermeulen7d2afd62011-06-20 11:42:43 +0200497 break;
Bert Vermeulenee7489d2012-04-22 18:11:31 +0200498 case SR_DF_ANALOG:
499 analog = packet->payload;
Uwe Hermanna421dc12013-01-29 12:55:00 +0100500 sr_dbg("bus: Received SR_DF_ANALOG packet (%d samples).",
501 analog->num_samples);
Bert Vermeulenee7489d2012-04-22 18:11:31 +0200502 break;
Bert Vermeulen7d2afd62011-06-20 11:42:43 +0200503 case SR_DF_END:
Uwe Hermanna421dc12013-01-29 12:55:00 +0100504 sr_dbg("bus: Received SR_DF_END packet.");
Bert Vermeulen7d2afd62011-06-20 11:42:43 +0200505 break;
Bert Vermeulen6ea76692012-04-30 19:55:06 +0200506 case SR_DF_FRAME_BEGIN:
Uwe Hermanna421dc12013-01-29 12:55:00 +0100507 sr_dbg("bus: Received SR_DF_FRAME_BEGIN packet.");
Bert Vermeulen6ea76692012-04-30 19:55:06 +0200508 break;
509 case SR_DF_FRAME_END:
Uwe Hermanna421dc12013-01-29 12:55:00 +0100510 sr_dbg("bus: Received SR_DF_FRAME_END packet.");
Bert Vermeulen6ea76692012-04-30 19:55:06 +0200511 break;
Bert Vermeulen7d2afd62011-06-20 11:42:43 +0200512 default:
Uwe Hermanna421dc12013-01-29 12:55:00 +0100513 sr_dbg("bus: Received unknown packet type: %d.", packet->type);
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100514 break;
Bert Vermeulen7d2afd62011-06-20 11:42:43 +0200515 }
Bert Vermeulen7d2afd62011-06-20 11:42:43 +0200516}
517
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100518/**
Bert Vermeulena1645fc2012-02-13 03:36:32 +0100519 * Send a packet to whatever is listening on the datafeed bus.
520 *
521 * Hardware drivers use this to send a data packet to the frontend.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100522 *
Uwe Hermann6b2d8d32012-10-21 23:24:42 +0200523 * @param sdi TODO.
Uwe Hermann31ccebc2012-02-29 22:08:45 +0100524 * @param packet The datafeed packet to send to the session bus.
Uwe Hermann44dae532012-02-17 20:44:19 +0100525 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100526 * @retval SR_OK Success.
527 * @retval SR_ERR_ARG Invalid argument.
Uwe Hermannb4bd7082012-10-19 10:07:22 +0200528 *
529 * @private
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100530 */
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200531SR_PRIV int sr_session_send(const struct sr_dev_inst *sdi,
Joel Holdsworthbf534572012-12-13 21:07:53 +0000532 const struct sr_datafeed_packet *packet)
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200533{
534 GSList *l;
Martin Ling27264742013-04-15 21:08:55 +0100535 struct datafeed_callback *cb_struct;
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200536
Bert Vermeulende4d3f92012-07-22 15:31:56 +0200537 if (!sdi) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100538 sr_err("%s: sdi was NULL", __func__);
Uwe Hermanne0508e62012-01-07 17:08:54 +0100539 return SR_ERR_ARG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100540 }
541
Uwe Hermanne0508e62012-01-07 17:08:54 +0100542 if (!packet) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100543 sr_err("%s: packet was NULL", __func__);
Uwe Hermanne0508e62012-01-07 17:08:54 +0100544 return SR_ERR_ARG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100545 }
546
Uwe Hermann62c82022010-04-15 20:16:53 +0200547 for (l = session->datafeed_callbacks; l; l = l->next) {
Bert Vermeulen18beaef2012-02-13 00:08:23 +0100548 if (sr_log_loglevel_get() >= SR_LOG_DBG)
549 datafeed_dump(packet);
Martin Ling27264742013-04-15 21:08:55 +0100550 cb_struct = l->data;
551 cb_struct->cb(sdi, packet, cb_struct->cb_data);
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200552 }
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100553
Uwe Hermanne0508e62012-01-07 17:08:54 +0100554 return SR_OK;
Uwe Hermanna1bb33a2010-04-02 20:18:27 +0200555}
556
Uwe Hermann6b2d8d32012-10-21 23:24:42 +0200557/**
558 * Add an event source for a file descriptor.
559 *
560 * @param pollfd The GPollFD.
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100561 * @param[in] timeout Max time to wait before the callback is called,
562 * ignored if 0.
Uwe Hermann6b2d8d32012-10-21 23:24:42 +0200563 * @param cb Callback function to add. Must not be NULL.
564 * @param cb_data Data for the callback function. Can be NULL.
565 * @param poll_object TODO.
566 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100567 * @retval SR_OK Success.
568 * @retval SR_ERR_ARG Invalid argument.
569 * @retval SR_ERR_MALLOC Memory allocation error.
Uwe Hermann6b2d8d32012-10-21 23:24:42 +0200570 */
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200571static int _sr_session_source_add(GPollFD *pollfd, int timeout,
Uwe Hermann1a895c62012-07-05 01:47:44 +0200572 sr_receive_data_callback_t cb, void *cb_data, gintptr poll_object)
Bert Vermeulen544a4582011-01-30 02:40:55 +0100573{
574 struct source *new_sources, *s;
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200575 GPollFD *new_pollfds;
Bert Vermeulen544a4582011-01-30 02:40:55 +0100576
Uwe Hermannd08490a2012-02-29 21:56:24 +0100577 if (!cb) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100578 sr_err("%s: cb was NULL", __func__);
Uwe Hermanne0508e62012-01-07 17:08:54 +0100579 return SR_ERR_ARG;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100580 }
581
Uwe Hermann1f9813e2012-02-29 22:32:34 +0100582 /* Note: cb_data can be NULL, that's not a bug. */
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100583
Bert Vermeulen2ac2e622012-07-22 15:32:35 +0200584 new_pollfds = g_try_realloc(session->pollfds,
585 sizeof(GPollFD) * (session->num_sources + 1));
Lars-Peter Clausen0687dfc2012-06-30 20:54:43 +0200586 if (!new_pollfds) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100587 sr_err("%s: new_pollfds malloc failed", __func__);
Lars-Peter Clausen0687dfc2012-06-30 20:54:43 +0200588 return SR_ERR_MALLOC;
589 }
590
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200591 new_sources = g_try_realloc(session->sources, sizeof(struct source) *
Bert Vermeulen2ac2e622012-07-22 15:32:35 +0200592 (session->num_sources + 1));
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100593 if (!new_sources) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100594 sr_err("%s: new_sources malloc failed", __func__);
Uwe Hermanne0508e62012-01-07 17:08:54 +0100595 return SR_ERR_MALLOC;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100596 }
Bert Vermeulen544a4582011-01-30 02:40:55 +0100597
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200598 new_pollfds[session->num_sources] = *pollfd;
599 s = &new_sources[session->num_sources++];
Bert Vermeulen544a4582011-01-30 02:40:55 +0100600 s->timeout = timeout;
Uwe Hermannd08490a2012-02-29 21:56:24 +0100601 s->cb = cb;
Uwe Hermann1f9813e2012-02-29 22:32:34 +0100602 s->cb_data = cb_data;
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200603 s->poll_object = poll_object;
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200604 session->pollfds = new_pollfds;
605 session->sources = new_sources;
Bert Vermeulen544a4582011-01-30 02:40:55 +0100606
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200607 if (timeout != session->source_timeout && timeout > 0
608 && (session->source_timeout == -1 || timeout < session->source_timeout))
609 session->source_timeout = timeout;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100610
Uwe Hermanne0508e62012-01-07 17:08:54 +0100611 return SR_OK;
Bert Vermeulen544a4582011-01-30 02:40:55 +0100612}
613
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100614/**
Uwe Hermann6b2d8d32012-10-21 23:24:42 +0200615 * Add an event source for a file descriptor.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100616 *
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200617 * @param fd The file descriptor.
618 * @param events Events to check for.
619 * @param timeout Max time to wait before the callback is called, ignored if 0.
620 * @param cb Callback function to add. Must not be NULL.
621 * @param cb_data Data for the callback function. Can be NULL.
Uwe Hermann44dae532012-02-17 20:44:19 +0100622 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100623 * @retval SR_OK Success.
624 * @retval SR_ERR_ARG Invalid argument.
625 * @retval SR_ERR_MALLOC Memory allocation error.
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100626 */
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200627SR_API int sr_session_source_add(int fd, int events, int timeout,
628 sr_receive_data_callback_t cb, void *cb_data)
629{
630 GPollFD p;
631
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200632 p.fd = fd;
633 p.events = events;
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200634
635 return _sr_session_source_add(&p, timeout, cb, cb_data, (gintptr)fd);
636}
637
638/**
Uwe Hermann1a895c62012-07-05 01:47:44 +0200639 * Add an event source for a GPollFD.
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200640 *
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200641 * @param pollfd The GPollFD.
642 * @param timeout Max time to wait before the callback is called, ignored if 0.
643 * @param cb Callback function to add. Must not be NULL.
644 * @param cb_data Data for the callback function. Can be NULL.
645 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100646 * @retval SR_OK Success.
647 * @retval SR_ERR_ARG Invalid argument.
648 * @retval SR_ERR_MALLOC Memory allocation error.
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200649 */
650SR_API int sr_session_source_add_pollfd(GPollFD *pollfd, int timeout,
651 sr_receive_data_callback_t cb, void *cb_data)
652{
Uwe Hermann1a895c62012-07-05 01:47:44 +0200653 return _sr_session_source_add(pollfd, timeout, cb,
654 cb_data, (gintptr)pollfd);
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200655}
656
657/**
Uwe Hermann1a895c62012-07-05 01:47:44 +0200658 * Add an event source for a GIOChannel.
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200659 *
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200660 * @param channel The GIOChannel.
661 * @param events Events to poll on.
662 * @param timeout Max time to wait before the callback is called, ignored if 0.
663 * @param cb Callback function to add. Must not be NULL.
664 * @param cb_data Data for the callback function. Can be NULL.
665 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100666 * @retval SR_OK Success.
667 * @retval SR_ERR_ARG Invalid argument.
668 * @retval SR_ERR_MALLOC Memory allocation error.
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200669 */
Uwe Hermann1a895c62012-07-05 01:47:44 +0200670SR_API int sr_session_source_add_channel(GIOChannel *channel, int events,
671 int timeout, sr_receive_data_callback_t cb, void *cb_data)
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200672{
673 GPollFD p;
674
675#ifdef _WIN32
Uwe Hermann6b2d8d32012-10-21 23:24:42 +0200676 g_io_channel_win32_make_pollfd(channel, events, &p);
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200677#else
678 p.fd = g_io_channel_unix_get_fd(channel);
679 p.events = events;
680#endif
681
682 return _sr_session_source_add(&p, timeout, cb, cb_data, (gintptr)channel);
683}
684
Uwe Hermann6b2d8d32012-10-21 23:24:42 +0200685/**
686 * Remove the source belonging to the specified channel.
687 *
688 * @todo Add more error checks and logging.
689 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100690 * @param poll_object The channel for which the source should be removed.
Uwe Hermann6b2d8d32012-10-21 23:24:42 +0200691 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100692 * @retval SR_OK Success
693 * @retval SR_ERR_ARG Invalid arguments
694 * @retval SR_ERR_MALLOC Memory allocation error
695 * @retval SR_ERR_BUG Internal error
Uwe Hermann6b2d8d32012-10-21 23:24:42 +0200696 */
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200697static int _sr_session_source_remove(gintptr poll_object)
Bert Vermeulen544a4582011-01-30 02:40:55 +0100698{
699 struct source *new_sources;
Lars-Peter Clausen0687dfc2012-06-30 20:54:43 +0200700 GPollFD *new_pollfds;
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200701 unsigned int old;
Bert Vermeulen544a4582011-01-30 02:40:55 +0100702
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200703 if (!session->sources || !session->num_sources) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100704 sr_err("%s: sources was NULL", __func__);
Uwe Hermann0abee502012-03-04 15:08:11 +0100705 return SR_ERR_BUG;
Uwe Hermanne0508e62012-01-07 17:08:54 +0100706 }
707
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200708 for (old = 0; old < session->num_sources; old++) {
709 if (session->sources[old].poll_object == poll_object)
Lars-Peter Clausen2bccd322012-06-30 20:54:42 +0200710 break;
711 }
Bert Vermeulen544a4582011-01-30 02:40:55 +0100712
Lars-Peter Clausen2bccd322012-06-30 20:54:42 +0200713 /* fd not found, nothing to do */
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200714 if (old == session->num_sources)
Lars-Peter Clausen2bccd322012-06-30 20:54:42 +0200715 return SR_OK;
716
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200717 session->num_sources -= 1;
Lars-Peter Clausen2bccd322012-06-30 20:54:42 +0200718
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200719 if (old != session->num_sources) {
720 memmove(&session->pollfds[old], &session->pollfds[old+1],
721 (session->num_sources - old) * sizeof(GPollFD));
722 memmove(&session->sources[old], &session->sources[old+1],
723 (session->num_sources - old) * sizeof(struct source));
Lars-Peter Clausen2bccd322012-06-30 20:54:42 +0200724 }
725
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200726 new_pollfds = g_try_realloc(session->pollfds, sizeof(GPollFD) * session->num_sources);
727 if (!new_pollfds && session->num_sources > 0) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100728 sr_err("%s: new_pollfds malloc failed", __func__);
Lars-Peter Clausen0687dfc2012-06-30 20:54:43 +0200729 return SR_ERR_MALLOC;
730 }
731
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200732 new_sources = g_try_realloc(session->sources, sizeof(struct source) * session->num_sources);
733 if (!new_sources && session->num_sources > 0) {
Uwe Hermanna421dc12013-01-29 12:55:00 +0100734 sr_err("%s: new_sources malloc failed", __func__);
Uwe Hermanne0508e62012-01-07 17:08:54 +0100735 return SR_ERR_MALLOC;
Uwe Hermann9f45fb32012-01-02 14:15:25 +0100736 }
737
Lars-Peter Clausenb7e94112012-07-06 23:23:31 +0200738 session->pollfds = new_pollfds;
739 session->sources = new_sources;
Uwe Hermanne0508e62012-01-07 17:08:54 +0100740
741 return SR_OK;
Bert Vermeulen544a4582011-01-30 02:40:55 +0100742}
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200743
Uwe Hermann6b2d8d32012-10-21 23:24:42 +0200744/**
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200745 * Remove the source belonging to the specified file descriptor.
746 *
Uwe Hermann1a895c62012-07-05 01:47:44 +0200747 * @param fd The file descriptor for which the source should be removed.
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200748 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100749 * @retval SR_OK Success
750 * @retval SR_ERR_ARG Invalid argument
751 * @retval SR_ERR_MALLOC Memory allocation error.
752 * @retval SR_ERR_BUG Internal error.
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200753 */
754SR_API int sr_session_source_remove(int fd)
755{
756 return _sr_session_source_remove((gintptr)fd);
757}
758
759/**
760 * Remove the source belonging to the specified poll descriptor.
761 *
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200762 * @param pollfd The poll descriptor for which the source should be removed.
763 *
764 * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or
765 * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon
766 * internal errors.
767 */
768SR_API int sr_session_source_remove_pollfd(GPollFD *pollfd)
769{
770 return _sr_session_source_remove((gintptr)pollfd);
771}
772
Uwe Hermann6b2d8d32012-10-21 23:24:42 +0200773/**
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200774 * Remove the source belonging to the specified channel.
775 *
Uwe Hermann1a895c62012-07-05 01:47:44 +0200776 * @param channel The channel for which the source should be removed.
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200777 *
Matthias Heidbrink04cb9152013-11-22 20:40:52 +0100778 * @retval SR_OK Success.
779 * @retval SR_ERR_ARG Invalid argument.
780 * @retval SR_ERR_MALLOC Memory allocation error.
781 * @return SR_ERR_BUG Internal error.
Lars-Peter Clausenaac0ea22012-06-30 20:54:44 +0200782 */
783SR_API int sr_session_source_remove_channel(GIOChannel *channel)
784{
785 return _sr_session_source_remove((gintptr)channel);
786}
Uwe Hermann7b870c32012-10-21 16:13:36 +0200787
788/** @} */