tests/test-aio.c

   1 /*
   2  * AioContext tests
   3  *
   4  * Copyright Red Hat, Inc. 2012
   5  *
   6  * Authors:
   7  *  Paolo Bonzini    <pbonzini@redhat.com>
   8  *
   9  * This work is licensed under the terms of the GNU LGPL, version 2 or later.
  10  * See the COPYING.LIB file in the top-level directory.
  11  */
  12
  13 #include <glib.h>
  14 #include "block/aio.h"
  15 #include "qemu/timer.h"
  16 #include "qemu/sockets.h"
  17 #include "qemu/error-report.h"
  18
  19 static AioContext *ctx;
  20
  21 typedef struct {
  22     EventNotifier e;
  23     int n;
  24     int active;
  25     bool auto_set;
  26 } EventNotifierTestData;
  27
  28 /* Wait until event notifier becomes inactive */
  29 static void wait_until_inactive(EventNotifierTestData *data)
  30 {
  31     while (data->active > 0) {
  32         aio_poll(ctx, true);
  33     }
  34 }
  35
  36 /* Simple callbacks for testing.  */
  37
  38 typedef struct {
  39     QEMUBH *bh;
  40     int n;
  41     int max;
  42 } BHTestData;
  43
  44 typedef struct {
  45     QEMUTimer timer;
  46     QEMUClockType clock_type;
  47     int n;
  48     int max;
  49     int64_t ns;
  50     AioContext *ctx;
  51 } TimerTestData;
  52
  53 static void bh_test_cb(void *opaque)
  54 {
  55     BHTestData *data = opaque;
  56     if (++data->n < data->max) {
  57         qemu_bh_schedule(data->bh);
  58     }
  59 }
  60
  61 static void timer_test_cb(void *opaque)
  62 {
  63     TimerTestData *data = opaque;
  64     if (++data->n < data->max) {
  65         timer_mod(&data->timer,
  66                   qemu_clock_get_ns(data->clock_type) + data->ns);
  67     }
  68 }
  69
  70 static void dummy_io_handler_read(EventNotifier *e)
  71 {
  72 }
  73
  74 static void bh_delete_cb(void *opaque)
  75 {
  76     BHTestData *data = opaque;
  77     if (++data->n < data->max) {
  78         qemu_bh_schedule(data->bh);
  79     } else {
  80         qemu_bh_delete(data->bh);
  81         data->bh = NULL;
  82     }
  83 }
  84
  85 static void event_ready_cb(EventNotifier *e)
  86 {
  87     EventNotifierTestData *data = container_of(e, EventNotifierTestData, e);
  88     g_assert(event_notifier_test_and_clear(e));
  89     data->n++;
  90     if (data->active > 0) {
  91         data->active--;
  92     }
  93     if (data->auto_set && data->active) {
  94         event_notifier_set(e);
  95     }
  96 }
  97
  98 /* Tests using aio_*.  */
  99
 100 typedef struct {
 101     QemuMutex start_lock;
 102     bool thread_acquired;
 103 } AcquireTestData;
 104
 105 static void *test_acquire_thread(void *opaque)
 106 {
 107     AcquireTestData *data = opaque;
 108
 109     /* Wait for other thread to let us start */
 110     qemu_mutex_lock(&data->start_lock);
 111     qemu_mutex_unlock(&data->start_lock);
 112
 113     aio_context_acquire(ctx);
 114     aio_context_release(ctx);
 115
 116     data->thread_acquired = true; /* success, we got here */
 117
 118     return NULL;
 119 }
 120
 121 static void set_event_notifier(AioContext *ctx, EventNotifier *notifier,
 122                                EventNotifierHandler *handler)
 123 {
 124     aio_set_event_notifier(ctx, notifier, false, handler);
 125 }
 126
 127 static void dummy_notifier_read(EventNotifier *unused)
 128 {
 129     g_assert(false); /* should never be invoked */
 130 }
 131
 132 static void test_acquire(void)
 133 {
 134     QemuThread thread;
 135     EventNotifier notifier;
 136     AcquireTestData data;
 137
 138     /* Dummy event notifier ensures aio_poll() will block */
 139     event_notifier_init(&notifier, false);
 140     set_event_notifier(ctx, &notifier, dummy_notifier_read);
 141     g_assert(!aio_poll(ctx, false)); /* consume aio_notify() */
 142
 143     qemu_mutex_init(&data.start_lock);
 144     qemu_mutex_lock(&data.start_lock);
 145     data.thread_acquired = false;
 146
 147     qemu_thread_create(&thread, "test_acquire_thread",
 148                        test_acquire_thread,
 149                        &data, QEMU_THREAD_JOINABLE);
 150
 151     /* Block in aio_poll(), let other thread kick us and acquire context */
 152     aio_context_acquire(ctx);
 153     qemu_mutex_unlock(&data.start_lock); /* let the thread run */
 154     g_assert(!aio_poll(ctx, true));
 155     aio_context_release(ctx);
 156
 157     qemu_thread_join(&thread);
 158     set_event_notifier(ctx, &notifier, NULL);
 159     event_notifier_cleanup(&notifier);
 160
 161     g_assert(data.thread_acquired);
 162 }
 163
 164 static void test_bh_schedule(void)
 165 {
 166     BHTestData data = { .n = 0 };
 167     data.bh = aio_bh_new(ctx, bh_test_cb, &data);
 168
 169     qemu_bh_schedule(data.bh);
 170     g_assert_cmpint(data.n, ==, 0);
 171
 172     g_assert(aio_poll(ctx, true));
 173     g_assert_cmpint(data.n, ==, 1);
 174
 175     g_assert(!aio_poll(ctx, false));
 176     g_assert_cmpint(data.n, ==, 1);
 177     qemu_bh_delete(data.bh);
 178 }
 179
 180 static void test_bh_schedule10(void)
 181 {
 182     BHTestData data = { .n = 0, .max = 10 };
 183     data.bh = aio_bh_new(ctx, bh_test_cb, &data);
 184
 185     qemu_bh_schedule(data.bh);
 186     g_assert_cmpint(data.n, ==, 0);
 187
 188     g_assert(aio_poll(ctx, false));
 189     g_assert_cmpint(data.n, ==, 1);
 190
 191     g_assert(aio_poll(ctx, true));
 192     g_assert_cmpint(data.n, ==, 2);
 193
 194     while (data.n < 10) {
 195         aio_poll(ctx, true);
 196     }
 197     g_assert_cmpint(data.n, ==, 10);
 198
 199     g_assert(!aio_poll(ctx, false));
 200     g_assert_cmpint(data.n, ==, 10);
 201     qemu_bh_delete(data.bh);
 202 }
 203
 204 static void test_bh_cancel(void)
 205 {
 206     BHTestData data = { .n = 0 };
 207     data.bh = aio_bh_new(ctx, bh_test_cb, &data);
 208
 209     qemu_bh_schedule(data.bh);
 210     g_assert_cmpint(data.n, ==, 0);
 211
 212     qemu_bh_cancel(data.bh);
 213     g_assert_cmpint(data.n, ==, 0);
 214
 215     g_assert(!aio_poll(ctx, false));
 216     g_assert_cmpint(data.n, ==, 0);
 217     qemu_bh_delete(data.bh);
 218 }
 219
 220 static void test_bh_delete(void)
 221 {
 222     BHTestData data = { .n = 0 };
 223     data.bh = aio_bh_new(ctx, bh_test_cb, &data);
 224
 225     qemu_bh_schedule(data.bh);
 226     g_assert_cmpint(data.n, ==, 0);
 227
 228     qemu_bh_delete(data.bh);
 229     g_assert_cmpint(data.n, ==, 0);
 230
 231     g_assert(!aio_poll(ctx, false));
 232     g_assert_cmpint(data.n, ==, 0);
 233 }
 234
 235 static void test_bh_delete_from_cb(void)
 236 {
 237     BHTestData data1 = { .n = 0, .max = 1 };
 238
 239     data1.bh = aio_bh_new(ctx, bh_delete_cb, &data1);
 240
 241     qemu_bh_schedule(data1.bh);
 242     g_assert_cmpint(data1.n, ==, 0);
 243
 244     while (data1.n < data1.max) {
 245         aio_poll(ctx, true);
 246     }
 247     g_assert_cmpint(data1.n, ==, data1.max);
 248     g_assert(data1.bh == NULL);
 249
 250     g_assert(!aio_poll(ctx, false));
 251 }
 252
 253 static void test_bh_delete_from_cb_many(void)
 254 {
 255     BHTestData data1 = { .n = 0, .max = 1 };
 256     BHTestData data2 = { .n = 0, .max = 3 };
 257     BHTestData data3 = { .n = 0, .max = 2 };
 258     BHTestData data4 = { .n = 0, .max = 4 };
 259
 260     data1.bh = aio_bh_new(ctx, bh_delete_cb, &data1);
 261     data2.bh = aio_bh_new(ctx, bh_delete_cb, &data2);
 262     data3.bh = aio_bh_new(ctx, bh_delete_cb, &data3);
 263     data4.bh = aio_bh_new(ctx, bh_delete_cb, &data4);
 264
 265     qemu_bh_schedule(data1.bh);
 266     qemu_bh_schedule(data2.bh);
 267     qemu_bh_schedule(data3.bh);
 268     qemu_bh_schedule(data4.bh);
 269     g_assert_cmpint(data1.n, ==, 0);
 270     g_assert_cmpint(data2.n, ==, 0);
 271     g_assert_cmpint(data3.n, ==, 0);
 272     g_assert_cmpint(data4.n, ==, 0);
 273
 274     g_assert(aio_poll(ctx, false));
 275     g_assert_cmpint(data1.n, ==, 1);
 276     g_assert_cmpint(data2.n, ==, 1);
 277     g_assert_cmpint(data3.n, ==, 1);
 278     g_assert_cmpint(data4.n, ==, 1);
 279     g_assert(data1.bh == NULL);
 280
 281     while (data1.n < data1.max ||
 282            data2.n < data2.max ||
 283            data3.n < data3.max ||
 284            data4.n < data4.max) {
 285         aio_poll(ctx, true);
 286     }
 287     g_assert_cmpint(data1.n, ==, data1.max);
 288     g_assert_cmpint(data2.n, ==, data2.max);
 289     g_assert_cmpint(data3.n, ==, data3.max);
 290     g_assert_cmpint(data4.n, ==, data4.max);
 291     g_assert(data1.bh == NULL);
 292     g_assert(data2.bh == NULL);
 293     g_assert(data3.bh == NULL);
 294     g_assert(data4.bh == NULL);
 295 }
 296
 297 static void test_bh_flush(void)
 298 {
 299     BHTestData data = { .n = 0 };
 300     data.bh = aio_bh_new(ctx, bh_test_cb, &data);
 301
 302     qemu_bh_schedule(data.bh);
 303     g_assert_cmpint(data.n, ==, 0);
 304
 305     g_assert(aio_poll(ctx, true));
 306     g_assert_cmpint(data.n, ==, 1);
 307
 308     g_assert(!aio_poll(ctx, false));
 309     g_assert_cmpint(data.n, ==, 1);
 310     qemu_bh_delete(data.bh);
 311 }
 312
 313 static void test_set_event_notifier(void)
 314 {
 315     EventNotifierTestData data = { .n = 0, .active = 0 };
 316     event_notifier_init(&data.e, false);
 317     set_event_notifier(ctx, &data.e, event_ready_cb);
 318     g_assert(!aio_poll(ctx, false));
 319     g_assert_cmpint(data.n, ==, 0);
 320
 321     set_event_notifier(ctx, &data.e, NULL);
 322     g_assert(!aio_poll(ctx, false));
 323     g_assert_cmpint(data.n, ==, 0);
 324     event_notifier_cleanup(&data.e);
 325 }
 326
 327 static void test_wait_event_notifier(void)
 328 {
 329     EventNotifierTestData data = { .n = 0, .active = 1 };
 330     event_notifier_init(&data.e, false);
 331     set_event_notifier(ctx, &data.e, event_ready_cb);
 332     while (aio_poll(ctx, false));
 333     g_assert_cmpint(data.n, ==, 0);
 334     g_assert_cmpint(data.active, ==, 1);
 335
 336     event_notifier_set(&data.e);
 337     g_assert(aio_poll(ctx, false));
 338     g_assert_cmpint(data.n, ==, 1);
 339     g_assert_cmpint(data.active, ==, 0);
 340
 341     g_assert(!aio_poll(ctx, false));
 342     g_assert_cmpint(data.n, ==, 1);
 343     g_assert_cmpint(data.active, ==, 0);
 344
 345     set_event_notifier(ctx, &data.e, NULL);
 346     g_assert(!aio_poll(ctx, false));
 347     g_assert_cmpint(data.n, ==, 1);
 348
 349     event_notifier_cleanup(&data.e);
 350 }
 351
 352 static void test_flush_event_notifier(void)
 353 {
 354     EventNotifierTestData data = { .n = 0, .active = 10, .auto_set = true };
 355     event_notifier_init(&data.e, false);
 356     set_event_notifier(ctx, &data.e, event_ready_cb);
 357     while (aio_poll(ctx, false));
 358     g_assert_cmpint(data.n, ==, 0);
 359     g_assert_cmpint(data.active, ==, 10);
 360
 361     event_notifier_set(&data.e);
 362     g_assert(aio_poll(ctx, false));
 363     g_assert_cmpint(data.n, ==, 1);
 364     g_assert_cmpint(data.active, ==, 9);
 365     g_assert(aio_poll(ctx, false));
 366
 367     wait_until_inactive(&data);
 368     g_assert_cmpint(data.n, ==, 10);
 369     g_assert_cmpint(data.active, ==, 0);
 370     g_assert(!aio_poll(ctx, false));
 371
 372     set_event_notifier(ctx, &data.e, NULL);
 373     g_assert(!aio_poll(ctx, false));
 374     event_notifier_cleanup(&data.e);
 375 }
 376
 377 static void test_wait_event_notifier_noflush(void)
 378 {
 379     EventNotifierTestData data = { .n = 0 };
 380     EventNotifierTestData dummy = { .n = 0, .active = 1 };
 381
 382     event_notifier_init(&data.e, false);
 383     set_event_notifier(ctx, &data.e, event_ready_cb);
 384
 385     g_assert(!aio_poll(ctx, false));
 386     g_assert_cmpint(data.n, ==, 0);
 387
 388     /* Until there is an active descriptor, aio_poll may or may not call
 389      * event_ready_cb.  Still, it must not block.  */
 390     event_notifier_set(&data.e);
 391     g_assert(aio_poll(ctx, true));
 392     data.n = 0;
 393
 394     /* An active event notifier forces aio_poll to look at EventNotifiers.  */
 395     event_notifier_init(&dummy.e, false);
 396     set_event_notifier(ctx, &dummy.e, event_ready_cb);
 397
 398     event_notifier_set(&data.e);
 399     g_assert(aio_poll(ctx, false));
 400     g_assert_cmpint(data.n, ==, 1);
 401     g_assert(!aio_poll(ctx, false));
 402     g_assert_cmpint(data.n, ==, 1);
 403
 404     event_notifier_set(&data.e);
 405     g_assert(aio_poll(ctx, false));
 406     g_assert_cmpint(data.n, ==, 2);
 407     g_assert(!aio_poll(ctx, false));
 408     g_assert_cmpint(data.n, ==, 2);
 409
 410     event_notifier_set(&dummy.e);
 411     wait_until_inactive(&dummy);
 412     g_assert_cmpint(data.n, ==, 2);
 413     g_assert_cmpint(dummy.n, ==, 1);
 414     g_assert_cmpint(dummy.active, ==, 0);
 415
 416     set_event_notifier(ctx, &dummy.e, NULL);
 417     event_notifier_cleanup(&dummy.e);
 418
 419     set_event_notifier(ctx, &data.e, NULL);
 420     g_assert(!aio_poll(ctx, false));
 421     g_assert_cmpint(data.n, ==, 2);
 422
 423     event_notifier_cleanup(&data.e);
 424 }
 425
 426 static void test_timer_schedule(void)
 427 {
 428     TimerTestData data = { .n = 0, .ctx = ctx, .ns = SCALE_MS * 750LL,
 429                            .max = 2,
 430                            .clock_type = QEMU_CLOCK_VIRTUAL };
 431     EventNotifier e;
 432
 433     /* aio_poll will not block to wait for timers to complete unless it has
 434      * an fd to wait on. Fixing this breaks other tests. So create a dummy one.
 435      */
 436     event_notifier_init(&e, false);
 437     set_event_notifier(ctx, &e, dummy_io_handler_read);
 438     aio_poll(ctx, false);
 439
 440     aio_timer_init(ctx, &data.timer, data.clock_type,
 441                    SCALE_NS, timer_test_cb, &data);
 442     timer_mod(&data.timer,
 443               qemu_clock_get_ns(data.clock_type) +
 444               data.ns);
 445
 446     g_assert_cmpint(data.n, ==, 0);
 447
 448     /* timer_mod may well cause an event notifer to have gone off,
 449      * so clear that
 450      */
 451     do {} while (aio_poll(ctx, false));
 452
 453     g_assert(!aio_poll(ctx, false));
 454     g_assert_cmpint(data.n, ==, 0);
 455
 456     g_usleep(1 * G_USEC_PER_SEC);
 457     g_assert_cmpint(data.n, ==, 0);
 458
 459     g_assert(aio_poll(ctx, false));
 460     g_assert_cmpint(data.n, ==, 1);
 461
 462     /* timer_mod called by our callback */
 463     do {} while (aio_poll(ctx, false));
 464
 465     g_assert(!aio_poll(ctx, false));
 466     g_assert_cmpint(data.n, ==, 1);
 467
 468     g_assert(aio_poll(ctx, true));
 469     g_assert_cmpint(data.n, ==, 2);
 470
 471     /* As max is now 2, an event notifier should not have gone off */
 472
 473     g_assert(!aio_poll(ctx, false));
 474     g_assert_cmpint(data.n, ==, 2);
 475
 476     set_event_notifier(ctx, &e, NULL);
 477     event_notifier_cleanup(&e);
 478
 479     timer_del(&data.timer);
 480 }
 481
 482 /* Now the same tests, using the context as a GSource.  They are
 483  * very similar to the ones above, with g_main_context_iteration
 484  * replacing aio_poll.  However:
 485  * - sometimes both the AioContext and the glib main loop wake
 486  *   themselves up.  Hence, some "g_assert(!aio_poll(ctx, false));"
 487  *   are replaced by "while (g_main_context_iteration(NULL, false));".
 488  * - there is no exact replacement for a blocking wait.
 489  *   "while (g_main_context_iteration(NULL, true)" seems to work,
 490  *   but it is not documented _why_ it works.  For these tests a
 491  *   non-blocking loop like "while (g_main_context_iteration(NULL, false)"
 492  *   works well, and that's what I am using.
 493  */
 494
 495 static void test_source_flush(void)
 496 {
 497     g_assert(!g_main_context_iteration(NULL, false));
 498     aio_notify(ctx);
 499     while (g_main_context_iteration(NULL, false));
 500     g_assert(!g_main_context_iteration(NULL, false));
 501 }
 502
 503 static void test_source_bh_schedule(void)
 504 {
 505     BHTestData data = { .n = 0 };
 506     data.bh = aio_bh_new(ctx, bh_test_cb, &data);
 507
 508     qemu_bh_schedule(data.bh);
 509     g_assert_cmpint(data.n, ==, 0);
 510
 511     g_assert(g_main_context_iteration(NULL, true));
 512     g_assert_cmpint(data.n, ==, 1);
 513
 514     g_assert(!g_main_context_iteration(NULL, false));
 515     g_assert_cmpint(data.n, ==, 1);
 516     qemu_bh_delete(data.bh);
 517 }
 518
 519 static void test_source_bh_schedule10(void)
 520 {
 521     BHTestData data = { .n = 0, .max = 10 };
 522     data.bh = aio_bh_new(ctx, bh_test_cb, &data);
 523
 524     qemu_bh_schedule(data.bh);
 525     g_assert_cmpint(data.n, ==, 0);
 526
 527     g_assert(g_main_context_iteration(NULL, false));
 528     g_assert_cmpint(data.n, ==, 1);
 529
 530     g_assert(g_main_context_iteration(NULL, true));
 531     g_assert_cmpint(data.n, ==, 2);
 532
 533     while (g_main_context_iteration(NULL, false));
 534     g_assert_cmpint(data.n, ==, 10);
 535
 536     g_assert(!g_main_context_iteration(NULL, false));
 537     g_assert_cmpint(data.n, ==, 10);
 538     qemu_bh_delete(data.bh);
 539 }
 540
 541 static void test_source_bh_cancel(void)
 542 {
 543     BHTestData data = { .n = 0 };
 544     data.bh = aio_bh_new(ctx, bh_test_cb, &data);
 545
 546     qemu_bh_schedule(data.bh);
 547     g_assert_cmpint(data.n, ==, 0);
 548
 549     qemu_bh_cancel(data.bh);
 550     g_assert_cmpint(data.n, ==, 0);
 551
 552     while (g_main_context_iteration(NULL, false));
 553     g_assert_cmpint(data.n, ==, 0);
 554     qemu_bh_delete(data.bh);
 555 }
 556
 557 static void test_source_bh_delete(void)
 558 {
 559     BHTestData data = { .n = 0 };
 560     data.bh = aio_bh_new(ctx, bh_test_cb, &data);
 561
 562     qemu_bh_schedule(data.bh);
 563     g_assert_cmpint(data.n, ==, 0);
 564
 565     qemu_bh_delete(data.bh);
 566     g_assert_cmpint(data.n, ==, 0);
 567
 568     while (g_main_context_iteration(NULL, false));
 569     g_assert_cmpint(data.n, ==, 0);
 570 }
 571
 572 static void test_source_bh_delete_from_cb(void)
 573 {
 574     BHTestData data1 = { .n = 0, .max = 1 };
 575
 576     data1.bh = aio_bh_new(ctx, bh_delete_cb, &data1);
 577
 578     qemu_bh_schedule(data1.bh);
 579     g_assert_cmpint(data1.n, ==, 0);
 580
 581     g_main_context_iteration(NULL, true);
 582     g_assert_cmpint(data1.n, ==, data1.max);
 583     g_assert(data1.bh == NULL);
 584
 585     g_assert(!g_main_context_iteration(NULL, false));
 586 }
 587
 588 static void test_source_bh_delete_from_cb_many(void)
 589 {
 590     BHTestData data1 = { .n = 0, .max = 1 };
 591     BHTestData data2 = { .n = 0, .max = 3 };
 592     BHTestData data3 = { .n = 0, .max = 2 };
 593     BHTestData data4 = { .n = 0, .max = 4 };
 594
 595     data1.bh = aio_bh_new(ctx, bh_delete_cb, &data1);
 596     data2.bh = aio_bh_new(ctx, bh_delete_cb, &data2);
 597     data3.bh = aio_bh_new(ctx, bh_delete_cb, &data3);
 598     data4.bh = aio_bh_new(ctx, bh_delete_cb, &data4);
 599
 600     qemu_bh_schedule(data1.bh);
 601     qemu_bh_schedule(data2.bh);
 602     qemu_bh_schedule(data3.bh);
 603     qemu_bh_schedule(data4.bh);
 604     g_assert_cmpint(data1.n, ==, 0);
 605     g_assert_cmpint(data2.n, ==, 0);
 606     g_assert_cmpint(data3.n, ==, 0);
 607     g_assert_cmpint(data4.n, ==, 0);
 608
 609     g_assert(g_main_context_iteration(NULL, false));
 610     g_assert_cmpint(data1.n, ==, 1);
 611     g_assert_cmpint(data2.n, ==, 1);
 612     g_assert_cmpint(data3.n, ==, 1);
 613     g_assert_cmpint(data4.n, ==, 1);
 614     g_assert(data1.bh == NULL);
 615
 616     while (g_main_context_iteration(NULL, false));
 617     g_assert_cmpint(data1.n, ==, data1.max);
 618     g_assert_cmpint(data2.n, ==, data2.max);
 619     g_assert_cmpint(data3.n, ==, data3.max);
 620     g_assert_cmpint(data4.n, ==, data4.max);
 621     g_assert(data1.bh == NULL);
 622     g_assert(data2.bh == NULL);
 623     g_assert(data3.bh == NULL);
 624     g_assert(data4.bh == NULL);
 625 }
 626
 627 static void test_source_bh_flush(void)
 628 {
 629     BHTestData data = { .n = 0 };
 630     data.bh = aio_bh_new(ctx, bh_test_cb, &data);
 631
 632     qemu_bh_schedule(data.bh);
 633     g_assert_cmpint(data.n, ==, 0);
 634
 635     g_assert(g_main_context_iteration(NULL, true));
 636     g_assert_cmpint(data.n, ==, 1);
 637
 638     g_assert(!g_main_context_iteration(NULL, false));
 639     g_assert_cmpint(data.n, ==, 1);
 640     qemu_bh_delete(data.bh);
 641 }
 642
 643 static void test_source_set_event_notifier(void)
 644 {
 645     EventNotifierTestData data = { .n = 0, .active = 0 };
 646     event_notifier_init(&data.e, false);
 647     set_event_notifier(ctx, &data.e, event_ready_cb);
 648     while (g_main_context_iteration(NULL, false));
 649     g_assert_cmpint(data.n, ==, 0);
 650
 651     set_event_notifier(ctx, &data.e, NULL);
 652     while (g_main_context_iteration(NULL, false));
 653     g_assert_cmpint(data.n, ==, 0);
 654     event_notifier_cleanup(&data.e);
 655 }
 656
 657 static void test_source_wait_event_notifier(void)
 658 {
 659     EventNotifierTestData data = { .n = 0, .active = 1 };
 660     event_notifier_init(&data.e, false);
 661     set_event_notifier(ctx, &data.e, event_ready_cb);
 662     while (g_main_context_iteration(NULL, false));
 663     g_assert_cmpint(data.n, ==, 0);
 664     g_assert_cmpint(data.active, ==, 1);
 665
 666     event_notifier_set(&data.e);
 667     g_assert(g_main_context_iteration(NULL, false));
 668     g_assert_cmpint(data.n, ==, 1);
 669     g_assert_cmpint(data.active, ==, 0);
 670
 671     while (g_main_context_iteration(NULL, false));
 672     g_assert_cmpint(data.n, ==, 1);
 673     g_assert_cmpint(data.active, ==, 0);
 674
 675     set_event_notifier(ctx, &data.e, NULL);
 676     while (g_main_context_iteration(NULL, false));
 677     g_assert_cmpint(data.n, ==, 1);
 678
 679     event_notifier_cleanup(&data.e);
 680 }
 681
 682 static void test_source_flush_event_notifier(void)
 683 {
 684     EventNotifierTestData data = { .n = 0, .active = 10, .auto_set = true };
 685     event_notifier_init(&data.e, false);
 686     set_event_notifier(ctx, &data.e, event_ready_cb);
 687     while (g_main_context_iteration(NULL, false));
 688     g_assert_cmpint(data.n, ==, 0);
 689     g_assert_cmpint(data.active, ==, 10);
 690
 691     event_notifier_set(&data.e);
 692     g_assert(g_main_context_iteration(NULL, false));
 693     g_assert_cmpint(data.n, ==, 1);
 694     g_assert_cmpint(data.active, ==, 9);
 695     g_assert(g_main_context_iteration(NULL, false));
 696
 697     while (g_main_context_iteration(NULL, false));
 698     g_assert_cmpint(data.n, ==, 10);
 699     g_assert_cmpint(data.active, ==, 0);
 700     g_assert(!g_main_context_iteration(NULL, false));
 701
 702     set_event_notifier(ctx, &data.e, NULL);
 703     while (g_main_context_iteration(NULL, false));
 704     event_notifier_cleanup(&data.e);
 705 }
 706
 707 static void test_source_wait_event_notifier_noflush(void)
 708 {
 709     EventNotifierTestData data = { .n = 0 };
 710     EventNotifierTestData dummy = { .n = 0, .active = 1 };
 711
 712     event_notifier_init(&data.e, false);
 713     set_event_notifier(ctx, &data.e, event_ready_cb);
 714
 715     while (g_main_context_iteration(NULL, false));
 716     g_assert_cmpint(data.n, ==, 0);
 717
 718     /* Until there is an active descriptor, glib may or may not call
 719      * event_ready_cb.  Still, it must not block.  */
 720     event_notifier_set(&data.e);
 721     g_main_context_iteration(NULL, true);
 722     data.n = 0;
 723
 724     /* An active event notifier forces aio_poll to look at EventNotifiers.  */
 725     event_notifier_init(&dummy.e, false);
 726     set_event_notifier(ctx, &dummy.e, event_ready_cb);
 727
 728     event_notifier_set(&data.e);
 729     g_assert(g_main_context_iteration(NULL, false));
 730     g_assert_cmpint(data.n, ==, 1);
 731     g_assert(!g_main_context_iteration(NULL, false));
 732     g_assert_cmpint(data.n, ==, 1);
 733
 734     event_notifier_set(&data.e);
 735     g_assert(g_main_context_iteration(NULL, false));
 736     g_assert_cmpint(data.n, ==, 2);
 737     g_assert(!g_main_context_iteration(NULL, false));
 738     g_assert_cmpint(data.n, ==, 2);
 739
 740     event_notifier_set(&dummy.e);
 741     while (g_main_context_iteration(NULL, false));
 742     g_assert_cmpint(data.n, ==, 2);
 743     g_assert_cmpint(dummy.n, ==, 1);
 744     g_assert_cmpint(dummy.active, ==, 0);
 745
 746     set_event_notifier(ctx, &dummy.e, NULL);
 747     event_notifier_cleanup(&dummy.e);
 748
 749     set_event_notifier(ctx, &data.e, NULL);
 750     while (g_main_context_iteration(NULL, false));
 751     g_assert_cmpint(data.n, ==, 2);
 752
 753     event_notifier_cleanup(&data.e);
 754 }
 755
 756 static void test_source_timer_schedule(void)
 757 {
 758     TimerTestData data = { .n = 0, .ctx = ctx, .ns = SCALE_MS * 750LL,
 759                            .max = 2,
 760                            .clock_type = QEMU_CLOCK_VIRTUAL };
 761     EventNotifier e;
 762     int64_t expiry;
 763
 764     /* aio_poll will not block to wait for timers to complete unless it has
 765      * an fd to wait on. Fixing this breaks other tests. So create a dummy one.
 766      */
 767     event_notifier_init(&e, false);
 768     set_event_notifier(ctx, &e, dummy_io_handler_read);
 769     do {} while (g_main_context_iteration(NULL, false));
 770
 771     aio_timer_init(ctx, &data.timer, data.clock_type,
 772                    SCALE_NS, timer_test_cb, &data);
 773     expiry = qemu_clock_get_ns(data.clock_type) +
 774         data.ns;
 775     timer_mod(&data.timer, expiry);
 776
 777     g_assert_cmpint(data.n, ==, 0);
 778
 779     g_usleep(1 * G_USEC_PER_SEC);
 780     g_assert_cmpint(data.n, ==, 0);
 781
 782     g_assert(g_main_context_iteration(NULL, true));
 783     g_assert_cmpint(data.n, ==, 1);
 784     expiry += data.ns;
 785
 786     while (data.n < 2) {
 787         g_main_context_iteration(NULL, true);
 788     }
 789
 790     g_assert_cmpint(data.n, ==, 2);
 791     g_assert(qemu_clock_get_ns(data.clock_type) > expiry);
 792
 793     set_event_notifier(ctx, &e, NULL);
 794     event_notifier_cleanup(&e);
 795
 796     timer_del(&data.timer);
 797 }
 798
 799
 800 /* End of tests.  */
 801
 802 int main(int argc, char **argv)
 803 {
 804     Error *local_error = NULL;
 805     GSource *src;
 806
 807     init_clocks();
 808
 809     ctx = aio_context_new(&local_error);
 810     if (!ctx) {
 811         error_report("Failed to create AIO Context: '%s'",
 812                      error_get_pretty(local_error));
 813         error_free(local_error);
 814         exit(1);
 815     }
 816     src = aio_get_g_source(ctx);
 817     g_source_attach(src, NULL);
 818     g_source_unref(src);
 819
 820     while (g_main_context_iteration(NULL, false));
 821
 822     g_test_init(&argc, &argv, NULL);
 823     g_test_add_func("/aio/acquire",                 test_acquire);
 824     g_test_add_func("/aio/bh/schedule",             test_bh_schedule);
 825     g_test_add_func("/aio/bh/schedule10",           test_bh_schedule10);
 826     g_test_add_func("/aio/bh/cancel",               test_bh_cancel);
 827     g_test_add_func("/aio/bh/delete",               test_bh_delete);
 828     g_test_add_func("/aio/bh/callback-delete/one",  test_bh_delete_from_cb);
 829     g_test_add_func("/aio/bh/callback-delete/many", test_bh_delete_from_cb_many);
 830     g_test_add_func("/aio/bh/flush",                test_bh_flush);
 831     g_test_add_func("/aio/event/add-remove",        test_set_event_notifier);
 832     g_test_add_func("/aio/event/wait",              test_wait_event_notifier);
 833     g_test_add_func("/aio/event/wait/no-flush-cb",  test_wait_event_notifier_noflush);
 834     g_test_add_func("/aio/event/flush",             test_flush_event_notifier);
 835     g_test_add_func("/aio/timer/schedule",          test_timer_schedule);
 836
 837     g_test_add_func("/aio-gsource/flush",                   test_source_flush);
 838     g_test_add_func("/aio-gsource/bh/schedule",             test_source_bh_schedule);
 839     g_test_add_func("/aio-gsource/bh/schedule10",           test_source_bh_schedule10);
 840     g_test_add_func("/aio-gsource/bh/cancel",               test_source_bh_cancel);
 841     g_test_add_func("/aio-gsource/bh/delete",               test_source_bh_delete);
 842     g_test_add_func("/aio-gsource/bh/callback-delete/one",  test_source_bh_delete_from_cb);
 843     g_test_add_func("/aio-gsource/bh/callback-delete/many", test_source_bh_delete_from_cb_many);
 844     g_test_add_func("/aio-gsource/bh/flush",                test_source_bh_flush);
 845     g_test_add_func("/aio-gsource/event/add-remove",        test_source_set_event_notifier);
 846     g_test_add_func("/aio-gsource/event/wait",              test_source_wait_event_notifier);
 847     g_test_add_func("/aio-gsource/event/wait/no-flush-cb",  test_source_wait_event_notifier_noflush);
 848     g_test_add_func("/aio-gsource/event/flush",             test_source_flush_event_notifier);
 849     g_test_add_func("/aio-gsource/timer/schedule",          test_source_timer_schedule);
 850     return g_test_run();
 851 }