src/modules/module-suspend-on-idle.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2006 Lennart Poettering
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as published
   8   by the Free Software Foundation; either version 2.1 of the License,
   9   or (at your option) any later version.
  10
  11   PulseAudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with PulseAudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <pulse/xmalloc.h>
  27 #include <pulse/timeval.h>
  28 #include <pulse/rtclock.h>
  29
  30 #include <pulsecore/core.h>
  31 #include <pulsecore/core-util.h>
  32 #include <pulsecore/sink-input.h>
  33 #include <pulsecore/source-output.h>
  34 #include <pulsecore/modargs.h>
  35 #include <pulsecore/log.h>
  36
  37 #include "module-suspend-on-idle-symdef.h"
  38
  39 PA_MODULE_AUTHOR("Lennart Poettering");
  40 PA_MODULE_DESCRIPTION("When a sink/source is idle for too long, suspend it");
  41 PA_MODULE_VERSION(PACKAGE_VERSION);
  42 PA_MODULE_LOAD_ONCE(TRUE);
  43 PA_MODULE_USAGE(
  44         "timeout=<timeout> "
  45         "mempool_vacuum=<vacuum memory if all sinks and sources are suspended?>");
  46
  47 static const char* const valid_modargs[] = {
  48     "timeout",
  49     "mempool_vacuum",
  50     NULL,
  51 };
  52
  53 struct userdata {
  54     pa_core *core;
  55     pa_usec_t timeout;
  56     pa_hashmap *device_infos;
  57     pa_hook_slot
  58         *sink_new_slot,
  59         *source_new_slot,
  60         *sink_unlink_slot,
  61         *source_unlink_slot,
  62         *sink_state_changed_slot,
  63         *source_state_changed_slot;
  64
  65     pa_hook_slot
  66         *sink_input_new_slot,
  67         *source_output_new_slot,
  68         *sink_input_unlink_slot,
  69         *source_output_unlink_slot,
  70         *sink_input_move_start_slot,
  71         *source_output_move_start_slot,
  72         *sink_input_move_finish_slot,
  73         *source_output_move_finish_slot,
  74         *sink_input_state_changed_slot,
  75         *source_output_state_changed_slot;
  76
  77     pa_bool_t mempool_vacuum:1;
  78 };
  79
  80 struct device_info {
  81     struct userdata *userdata;
  82     pa_sink *sink;
  83     pa_source *source;
  84     pa_usec_t last_use;
  85     pa_time_event *time_event;
  86 };
  87
  88 static void check_meempool_vacuum(struct device_info *d) {
  89     pa_sink *si;
  90     pa_source *so;
  91     uint32_t idx;
  92
  93     pa_assert(d);
  94     pa_assert(d->userdata);
  95     pa_assert(d->userdata->core);
  96
  97     idx = 0;
  98     PA_IDXSET_FOREACH(si, d->userdata->core->sinks, idx)
  99         if (pa_sink_get_state(si) != PA_SINK_SUSPENDED)
 100             return;
 101
 102     idx = 0;
 103     PA_IDXSET_FOREACH(so, d->userdata->core->sources, idx)
 104         if (pa_source_get_state(so) != PA_SOURCE_SUSPENDED)
 105             return;
 106
 107     pa_log_info("All sinks and sources are suspended, vacuuming memory");
 108     pa_mempool_vacuum(d->userdata->core->mempool);
 109 }
 110
 111 static void timeout_cb(pa_mainloop_api*a, pa_time_event* e, const struct timeval *t, void *userdata) {
 112     struct device_info *d = userdata;
 113
 114     pa_assert(d);
 115
 116     d->userdata->core->mainloop->time_restart(d->time_event, NULL);
 117
 118     if (d->sink && pa_sink_check_suspend(d->sink) <= 0 && !(d->sink->suspend_cause & PA_SUSPEND_IDLE)) {
 119         pa_log_info("Sink %s idle for too long, suspending ...", d->sink->name);
 120         pa_sink_suspend(d->sink, TRUE, PA_SUSPEND_IDLE);
 121         if (d->userdata->mempool_vacuum)
 122             check_meempool_vacuum(d);
 123     }
 124
 125     if (d->source && pa_source_check_suspend(d->source) <= 0 && !(d->source->suspend_cause & PA_SUSPEND_IDLE)) {
 126         pa_log_info("Source %s idle for too long, suspending ...", d->source->name);
 127         pa_source_suspend(d->source, TRUE, PA_SUSPEND_IDLE);
 128         if (d->userdata->mempool_vacuum)
 129             check_meempool_vacuum(d);
 130     }
 131 }
 132
 133 static void restart(struct device_info *d) {
 134     pa_usec_t now;
 135     const char *s;
 136     uint32_t timeout;
 137
 138     pa_assert(d);
 139     pa_assert(d->sink || d->source);
 140
 141     d->last_use = now = pa_rtclock_now();
 142
 143     s = pa_proplist_gets(d->sink ? d->sink->proplist : d->source->proplist, "module-suspend-on-idle.timeout");
 144     if (!s || pa_atou(s, &timeout) < 0)
 145         timeout = d->userdata->timeout;
 146
 147     pa_core_rttime_restart(d->userdata->core, d->time_event, now + timeout * PA_USEC_PER_SEC);
 148
 149     if (d->sink)
 150         pa_log_debug("Sink %s becomes idle, timeout in %u seconds.", d->sink->name, timeout);
 151     if (d->source)
 152         pa_log_debug("Source %s becomes idle, timeout in %u seconds.", d->source->name, timeout);
 153 }
 154
 155 static void resume(struct device_info *d) {
 156     pa_assert(d);
 157
 158     d->userdata->core->mainloop->time_restart(d->time_event, NULL);
 159
 160     if (d->sink) {
 161         pa_sink_suspend(d->sink, FALSE, PA_SUSPEND_IDLE);
 162
 163         pa_log_debug("Sink %s becomes busy.", d->sink->name);
 164     }
 165
 166     if (d->source) {
 167         pa_source_suspend(d->source, FALSE, PA_SUSPEND_IDLE);
 168
 169         pa_log_debug("Source %s becomes busy.", d->source->name);
 170     }
 171 }
 172
 173 static pa_hook_result_t sink_input_fixate_hook_cb(pa_core *c, pa_sink_input_new_data *data, struct userdata *u) {
 174     struct device_info *d;
 175
 176     pa_assert(c);
 177     pa_assert(data);
 178     pa_assert(u);
 179
 180     /* We need to resume the audio device here even for
 181      * PA_SINK_INPUT_START_CORKED, since we need the device parameters
 182      * to be fully available while the stream is set up. */
 183
 184     if ((d = pa_hashmap_get(u->device_infos, data->sink)))
 185         resume(d);
 186
 187     return PA_HOOK_OK;
 188 }
 189
 190 static pa_hook_result_t source_output_fixate_hook_cb(pa_core *c, pa_source_output_new_data *data, struct userdata *u) {
 191     struct device_info *d;
 192
 193     pa_assert(c);
 194     pa_assert(data);
 195     pa_assert(u);
 196
 197     if (data->source->monitor_of)
 198         d = pa_hashmap_get(u->device_infos, data->source->monitor_of);
 199     else
 200         d = pa_hashmap_get(u->device_infos, data->source);
 201
 202     if (d)
 203         resume(d);
 204
 205     return PA_HOOK_OK;
 206 }
 207
 208 static pa_hook_result_t sink_input_unlink_hook_cb(pa_core *c, pa_sink_input *s, struct userdata *u) {
 209     pa_assert(c);
 210     pa_sink_input_assert_ref(s);
 211     pa_assert(u);
 212
 213     if (!s->sink)
 214         return PA_HOOK_OK;
 215
 216     if (pa_sink_check_suspend(s->sink) <= 0) {
 217         struct device_info *d;
 218         if ((d = pa_hashmap_get(u->device_infos, s->sink)))
 219             restart(d);
 220     }
 221
 222     return PA_HOOK_OK;
 223 }
 224
 225 static pa_hook_result_t source_output_unlink_hook_cb(pa_core *c, pa_source_output *s, struct userdata *u) {
 226     struct device_info *d = NULL;
 227
 228     pa_assert(c);
 229     pa_source_output_assert_ref(s);
 230     pa_assert(u);
 231
 232     if (!s->source)
 233         return PA_HOOK_OK;
 234
 235     if (s->source->monitor_of) {
 236         if (pa_sink_check_suspend(s->source->monitor_of) <= 0)
 237             d = pa_hashmap_get(u->device_infos, s->source->monitor_of);
 238     } else {
 239         if (pa_source_check_suspend(s->source) <= 0)
 240             d = pa_hashmap_get(u->device_infos, s->source);
 241     }
 242
 243     if (d)
 244         restart(d);
 245
 246     return PA_HOOK_OK;
 247 }
 248
 249 static pa_hook_result_t sink_input_move_start_hook_cb(pa_core *c, pa_sink_input *s, struct userdata *u) {
 250     struct device_info *d;
 251
 252     pa_assert(c);
 253     pa_sink_input_assert_ref(s);
 254     pa_assert(u);
 255
 256     if (pa_sink_check_suspend(s->sink) <= 1)
 257         if ((d = pa_hashmap_get(u->device_infos, s->sink)))
 258             restart(d);
 259
 260     return PA_HOOK_OK;
 261 }
 262
 263 static pa_hook_result_t sink_input_move_finish_hook_cb(pa_core *c, pa_sink_input *s, struct userdata *u) {
 264     struct device_info *d;
 265     pa_sink_input_state_t state;
 266
 267     pa_assert(c);
 268     pa_sink_input_assert_ref(s);
 269     pa_assert(u);
 270
 271     state = pa_sink_input_get_state(s);
 272     if (state != PA_SINK_INPUT_RUNNING && state != PA_SINK_INPUT_DRAINED)
 273         return PA_HOOK_OK;
 274
 275     if ((d = pa_hashmap_get(u->device_infos, s->sink)))
 276         resume(d);
 277
 278     return PA_HOOK_OK;
 279 }
 280
 281 static pa_hook_result_t source_output_move_start_hook_cb(pa_core *c, pa_source_output *s, struct userdata *u) {
 282     struct device_info *d = NULL;
 283
 284     pa_assert(c);
 285     pa_source_output_assert_ref(s);
 286     pa_assert(u);
 287
 288     if (s->source->monitor_of) {
 289         if (pa_sink_check_suspend(s->source->monitor_of) <= 1)
 290             d = pa_hashmap_get(u->device_infos, s->source->monitor_of);
 291     } else {
 292         if (pa_source_check_suspend(s->source) <= 1)
 293             d = pa_hashmap_get(u->device_infos, s->source);
 294     }
 295
 296     if (d)
 297         restart(d);
 298
 299     return PA_HOOK_OK;
 300 }
 301
 302 static pa_hook_result_t source_output_move_finish_hook_cb(pa_core *c, pa_source_output *s, struct userdata *u) {
 303     struct device_info *d;
 304
 305     pa_assert(c);
 306     pa_source_output_assert_ref(s);
 307     pa_assert(u);
 308
 309     if (pa_source_output_get_state(s) != PA_SOURCE_OUTPUT_RUNNING)
 310         return PA_HOOK_OK;
 311
 312     if (s->source->monitor_of)
 313         d = pa_hashmap_get(u->device_infos, s->source->monitor_of);
 314     else
 315         d = pa_hashmap_get(u->device_infos, s->source);
 316
 317     if (d)
 318         resume(d);
 319
 320     return PA_HOOK_OK;
 321 }
 322
 323 static pa_hook_result_t sink_input_state_changed_hook_cb(pa_core *c, pa_sink_input *s, struct userdata *u) {
 324     struct device_info *d;
 325     pa_sink_input_state_t state;
 326
 327     pa_assert(c);
 328     pa_sink_input_assert_ref(s);
 329     pa_assert(u);
 330
 331     state = pa_sink_input_get_state(s);
 332     if (state == PA_SINK_INPUT_RUNNING || state == PA_SINK_INPUT_DRAINED)
 333         if ((d = pa_hashmap_get(u->device_infos, s->sink)))
 334             resume(d);
 335
 336     return PA_HOOK_OK;
 337 }
 338
 339 static pa_hook_result_t source_output_state_changed_hook_cb(pa_core *c, pa_source_output *s, struct userdata *u) {
 340     pa_assert(c);
 341     pa_source_output_assert_ref(s);
 342     pa_assert(u);
 343
 344     if (pa_source_output_get_state(s) == PA_SOURCE_OUTPUT_RUNNING) {
 345         struct device_info *d;
 346
 347         if (s->source->monitor_of)
 348             d = pa_hashmap_get(u->device_infos, s->source->monitor_of);
 349         else
 350             d = pa_hashmap_get(u->device_infos, s->source);
 351
 352         if (d)
 353             resume(d);
 354     }
 355
 356     return PA_HOOK_OK;
 357 }
 358
 359 static pa_hook_result_t device_new_hook_cb(pa_core *c, pa_object *o, struct userdata *u) {
 360     struct device_info *d;
 361     pa_source *source;
 362     pa_sink *sink;
 363
 364     pa_assert(c);
 365     pa_object_assert_ref(o);
 366     pa_assert(u);
 367
 368     source = pa_source_isinstance(o) ? PA_SOURCE(o) : NULL;
 369     sink = pa_sink_isinstance(o) ? PA_SINK(o) : NULL;
 370
 371     /* Never suspend monitors */
 372     if (source && source->monitor_of)
 373         return PA_HOOK_OK;
 374
 375     pa_assert(source || sink);
 376
 377     d = pa_xnew(struct device_info, 1);
 378     d->userdata = u;
 379     d->source = source ? pa_source_ref(source) : NULL;
 380     d->sink = sink ? pa_sink_ref(sink) : NULL;
 381     d->time_event = pa_core_rttime_new(c, PA_USEC_INVALID, timeout_cb, d);
 382     pa_hashmap_put(u->device_infos, o, d);
 383
 384     if ((d->sink && pa_sink_check_suspend(d->sink) <= 0) ||
 385         (d->source && pa_source_check_suspend(d->source) <= 0))
 386         restart(d);
 387
 388     return PA_HOOK_OK;
 389 }
 390
 391 static void device_info_free(struct device_info *d) {
 392     pa_assert(d);
 393
 394     if (d->source)
 395         pa_source_unref(d->source);
 396     if (d->sink)
 397         pa_sink_unref(d->sink);
 398
 399     d->userdata->core->mainloop->time_free(d->time_event);
 400
 401     pa_xfree(d);
 402 }
 403
 404 static pa_hook_result_t device_unlink_hook_cb(pa_core *c, pa_object *o, struct userdata *u) {
 405     struct device_info *d;
 406
 407     pa_assert(c);
 408     pa_object_assert_ref(o);
 409     pa_assert(u);
 410
 411     if ((d = pa_hashmap_remove(u->device_infos, o)))
 412         device_info_free(d);
 413
 414     return PA_HOOK_OK;
 415 }
 416
 417 static pa_hook_result_t device_state_changed_hook_cb(pa_core *c, pa_object *o, struct userdata *u) {
 418     struct device_info *d;
 419
 420     pa_assert(c);
 421     pa_object_assert_ref(o);
 422     pa_assert(u);
 423
 424     if (!(d = pa_hashmap_get(u->device_infos, o)))
 425         return PA_HOOK_OK;
 426
 427     if (pa_sink_isinstance(o)) {
 428         pa_sink *s = PA_SINK(o);
 429         pa_sink_state_t state = pa_sink_get_state(s);
 430
 431         if (pa_sink_check_suspend(s) <= 0)
 432             if (PA_SINK_IS_OPENED(state))
 433                 restart(d);
 434
 435     } else if (pa_source_isinstance(o)) {
 436         pa_source *s = PA_SOURCE(o);
 437         pa_source_state_t state = pa_source_get_state(s);
 438
 439         if (pa_source_check_suspend(s) <= 0)
 440             if (PA_SOURCE_IS_OPENED(state))
 441                 restart(d);
 442     }
 443
 444     return PA_HOOK_OK;
 445 }
 446
 447 int pa__init(pa_module*m) {
 448     pa_modargs *ma = NULL;
 449     struct userdata *u;
 450     uint32_t timeout = 5;
 451     pa_bool_t mempool_vacuum = FALSE;
 452     uint32_t idx;
 453     pa_sink *sink;
 454     pa_source *source;
 455
 456     pa_assert(m);
 457
 458     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 459         pa_log("Failed to parse module arguments.");
 460         goto fail;
 461     }
 462
 463     if (pa_modargs_get_value_u32(ma, "timeout", &timeout) < 0) {
 464         pa_log("Failed to parse timeout value.");
 465         goto fail;
 466     }
 467
 468     if (pa_modargs_get_value_boolean(ma, "mempool_vacuum", &mempool_vacuum) < 0) {
 469         pa_log("Failed to parse mempool_vacuum boolean parameter.");
 470         goto fail;
 471     }
 472
 473     m->userdata = u = pa_xnew(struct userdata, 1);
 474     u->core = m->core;
 475     u->timeout = timeout;
 476     u->device_infos = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 477     u->mempool_vacuum = mempool_vacuum;
 478
 479     for (sink = pa_idxset_first(m->core->sinks, &idx); sink; sink = pa_idxset_next(m->core->sinks, &idx))
 480         device_new_hook_cb(m->core, PA_OBJECT(sink), u);
 481
 482     for (source = pa_idxset_first(m->core->sources, &idx); source; source = pa_idxset_next(m->core->sources, &idx))
 483         device_new_hook_cb(m->core, PA_OBJECT(source), u);
 484
 485     u->sink_new_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_PUT], PA_HOOK_NORMAL, (pa_hook_cb_t) device_new_hook_cb, u);
 486     u->source_new_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_PUT], PA_HOOK_NORMAL, (pa_hook_cb_t) device_new_hook_cb, u);
 487     u->sink_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_UNLINK_POST], PA_HOOK_NORMAL, (pa_hook_cb_t) device_unlink_hook_cb, u);
 488     u->source_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], PA_HOOK_NORMAL, (pa_hook_cb_t) device_unlink_hook_cb, u);
 489     u->sink_state_changed_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_STATE_CHANGED], PA_HOOK_NORMAL, (pa_hook_cb_t) device_state_changed_hook_cb, u);
 490     u->source_state_changed_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], PA_HOOK_NORMAL, (pa_hook_cb_t) device_state_changed_hook_cb, u);
 491
 492     u->sink_input_new_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_FIXATE], PA_HOOK_NORMAL, (pa_hook_cb_t) sink_input_fixate_hook_cb, u);
 493     u->source_output_new_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_FIXATE], PA_HOOK_NORMAL, (pa_hook_cb_t) source_output_fixate_hook_cb, u);
 494     u->sink_input_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK_POST], PA_HOOK_NORMAL, (pa_hook_cb_t) sink_input_unlink_hook_cb, u);
 495     u->source_output_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK_POST], PA_HOOK_NORMAL, (pa_hook_cb_t) source_output_unlink_hook_cb, u);
 496     u->sink_input_move_start_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_START], PA_HOOK_NORMAL, (pa_hook_cb_t) sink_input_move_start_hook_cb, u);
 497     u->source_output_move_start_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_START], PA_HOOK_NORMAL, (pa_hook_cb_t) source_output_move_start_hook_cb, u);
 498     u->sink_input_move_finish_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_FINISH], PA_HOOK_NORMAL, (pa_hook_cb_t) sink_input_move_finish_hook_cb, u);
 499     u->source_output_move_finish_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FINISH], PA_HOOK_NORMAL, (pa_hook_cb_t) source_output_move_finish_hook_cb, u);
 500     u->sink_input_state_changed_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED], PA_HOOK_NORMAL, (pa_hook_cb_t) sink_input_state_changed_hook_cb, u);
 501     u->source_output_state_changed_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_STATE_CHANGED], PA_HOOK_NORMAL, (pa_hook_cb_t) source_output_state_changed_hook_cb, u);
 502
 503     pa_modargs_free(ma);
 504     return 0;
 505
 506 fail:
 507
 508     if (ma)
 509         pa_modargs_free(ma);
 510
 511     return -1;
 512 }
 513
 514 void pa__done(pa_module*m) {
 515     struct userdata *u;
 516     struct device_info *d;
 517
 518     pa_assert(m);
 519
 520     if (!m->userdata)
 521         return;
 522
 523     u = m->userdata;
 524
 525     if (u->sink_new_slot)
 526         pa_hook_slot_free(u->sink_new_slot);
 527     if (u->sink_unlink_slot)
 528         pa_hook_slot_free(u->sink_unlink_slot);
 529     if (u->sink_state_changed_slot)
 530         pa_hook_slot_free(u->sink_state_changed_slot);
 531
 532     if (u->source_new_slot)
 533         pa_hook_slot_free(u->source_new_slot);
 534     if (u->source_unlink_slot)
 535         pa_hook_slot_free(u->source_unlink_slot);
 536     if (u->source_state_changed_slot)
 537         pa_hook_slot_free(u->source_state_changed_slot);
 538
 539     if (u->sink_input_new_slot)
 540         pa_hook_slot_free(u->sink_input_new_slot);
 541     if (u->sink_input_unlink_slot)
 542         pa_hook_slot_free(u->sink_input_unlink_slot);
 543     if (u->sink_input_move_start_slot)
 544         pa_hook_slot_free(u->sink_input_move_start_slot);
 545     if (u->sink_input_move_finish_slot)
 546         pa_hook_slot_free(u->sink_input_move_finish_slot);
 547     if (u->sink_input_state_changed_slot)
 548         pa_hook_slot_free(u->sink_input_state_changed_slot);
 549
 550     if (u->source_output_new_slot)
 551         pa_hook_slot_free(u->source_output_new_slot);
 552     if (u->source_output_unlink_slot)
 553         pa_hook_slot_free(u->source_output_unlink_slot);
 554     if (u->source_output_move_start_slot)
 555         pa_hook_slot_free(u->source_output_move_start_slot);
 556     if (u->source_output_move_finish_slot)
 557         pa_hook_slot_free(u->source_output_move_finish_slot);
 558     if (u->source_output_state_changed_slot)
 559         pa_hook_slot_free(u->source_output_state_changed_slot);
 560
 561     while ((d = pa_hashmap_steal_first(u->device_infos)))
 562         device_info_free(d);
 563
 564     pa_hashmap_free(u->device_infos, NULL, NULL);
 565
 566     pa_xfree(u);
 567 }