lib/tevent/testsuite.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    testing of the events subsystem
   5
   6    Copyright (C) Stefan Metzmacher 2006-2009
   7    Copyright (C) Jeremy Allison    2013
   8
   9      ** NOTE! The following LGPL license applies to the tevent
  10      ** library. This does NOT imply that all of Samba is released
  11      ** under the LGPL
  12
  13    This library is free software; you can redistribute it and/or
  14    modify it under the terms of the GNU Lesser General Public
  15    License as published by the Free Software Foundation; either
  16    version 3 of the License, or (at your option) any later version.
  17
  18    This library is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21    Lesser General Public License for more details.
  22
  23    You should have received a copy of the GNU Lesser General Public
  24    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  25 */
  26
  27 #include "includes.h"
  28 #include "lib/tevent/tevent.h"
  29 #include "system/filesys.h"
  30 #include "system/select.h"
  31 #include "system/network.h"
  32 #include "torture/torture.h"
  33 #ifdef HAVE_PTHREAD
  34 #include <pthread.h>
  35 #include <assert.h>
  36 #endif
  37
  38 static int fde_count;
  39 static int fde_wcount;
  40
  41 static void fde_handler_readwrite(struct tevent_context *ev_ctx, struct tevent_fd *f,
  42                         uint16_t flags, void *private_data)
  43 {
  44         int *fd = (int *)private_data;
  45         char c = 0;
  46 #ifdef SA_SIGINFO
  47         kill(getpid(), SIGUSR1);
  48 #endif
  49         kill(getpid(), SIGALRM);
  50
  51         if ((flags & TEVENT_FD_WRITE) && (fde_wcount - fde_count < 256)) {
  52                 /* Don't fill the pipe and block... */
  53                 write(fd[1], &c, 1);
  54                 fde_wcount++;
  55         } else {
  56                 read(fd[0], &c, 1);
  57                 fde_count++;
  58         }
  59 }
  60
  61 static void finished_handler(struct tevent_context *ev_ctx, struct tevent_timer *te,
  62                              struct timeval tval, void *private_data)
  63 {
  64         int *finished = (int *)private_data;
  65         (*finished) = 1;
  66 }
  67
  68 static void count_handler(struct tevent_context *ev_ctx, struct tevent_signal *te,
  69                           int signum, int count, void *info, void *private_data)
  70 {
  71         int *countp = (int *)private_data;
  72         (*countp) += count;
  73 }
  74
  75 static bool test_event_context(struct torture_context *test,
  76                                const void *test_data)
  77 {
  78         struct tevent_context *ev_ctx;
  79         int fd[2] = { -1, -1 };
  80         const char *backend = (const char *)test_data;
  81         int alarm_count=0, info_count=0;
  82         struct tevent_fd *fde_read;
  83         struct tevent_fd *fde_read_1;
  84         struct tevent_fd *fde_write;
  85         struct tevent_fd *fde_write_1;
  86 #ifdef SA_RESTART
  87         struct tevent_signal *se1 = NULL;
  88 #endif
  89 #ifdef SA_RESETHAND
  90         struct tevent_signal *se2 = NULL;
  91 #endif
  92 #ifdef SA_SIGINFO
  93         struct tevent_signal *se3 = NULL;
  94 #endif
  95         int finished=0;
  96         struct timeval t;
  97
  98         ev_ctx = tevent_context_init_byname(test, backend);
  99         if (ev_ctx == NULL) {
 100                 torture_comment(test, "event backend '%s' not supported\n", backend);
 101                 return true;
 102         }
 103
 104         torture_comment(test, "backend '%s' - %s\n",
 105                         backend, __FUNCTION__);
 106
 107         /* reset globals */
 108         fde_count = 0;
 109         fde_wcount = 0;
 110
 111         /* create a pipe */
 112         pipe(fd);
 113
 114         fde_read = tevent_add_fd(ev_ctx, ev_ctx, fd[0], TEVENT_FD_READ,
 115                             fde_handler_readwrite, fd);
 116         fde_write_1 = tevent_add_fd(ev_ctx, ev_ctx, fd[0], TEVENT_FD_WRITE,
 117                             fde_handler_readwrite, fd);
 118
 119         fde_write = tevent_add_fd(ev_ctx, ev_ctx, fd[1], TEVENT_FD_WRITE,
 120                             fde_handler_readwrite, fd);
 121         fde_read_1 = tevent_add_fd(ev_ctx, ev_ctx, fd[1], TEVENT_FD_READ,
 122                             fde_handler_readwrite, fd);
 123
 124         tevent_fd_set_auto_close(fde_read);
 125         tevent_fd_set_auto_close(fde_write);
 126
 127         tevent_add_timer(ev_ctx, ev_ctx, timeval_current_ofs(2,0),
 128                          finished_handler, &finished);
 129
 130 #ifdef SA_RESTART
 131         se1 = tevent_add_signal(ev_ctx, ev_ctx, SIGALRM, SA_RESTART, count_handler, &alarm_count);
 132         torture_assert(test, se1 != NULL, "failed to setup se1");
 133 #endif
 134 #ifdef SA_RESETHAND
 135         se2 = tevent_add_signal(ev_ctx, ev_ctx, SIGALRM, SA_RESETHAND, count_handler, &alarm_count);
 136         torture_assert(test, se2 != NULL, "failed to setup se2");
 137 #endif
 138 #ifdef SA_SIGINFO
 139         se3 = tevent_add_signal(ev_ctx, ev_ctx, SIGUSR1, SA_SIGINFO, count_handler, &info_count);
 140         torture_assert(test, se3 != NULL, "failed to setup se3");
 141 #endif
 142
 143         t = timeval_current();
 144         while (!finished) {
 145                 errno = 0;
 146                 if (tevent_loop_once(ev_ctx) == -1) {
 147                         talloc_free(ev_ctx);
 148                         torture_fail(test, talloc_asprintf(test, "Failed event loop %s\n", strerror(errno)));
 149                 }
 150         }
 151
 152         talloc_free(fde_read);
 153         talloc_free(fde_write);
 154         talloc_free(fde_read_1);
 155         talloc_free(fde_write_1);
 156
 157         while (alarm_count < fde_count+1) {
 158                 if (tevent_loop_once(ev_ctx) == -1) {
 159                         break;
 160                 }
 161         }
 162
 163         torture_comment(test, "Got %.2f pipe events/sec\n", fde_count/timeval_elapsed(&t));
 164
 165 #ifdef SA_RESTART
 166         talloc_free(se1);
 167 #endif
 168
 169         torture_assert_int_equal(test, alarm_count, 1+fde_count+fde_wcount, "alarm count mismatch");
 170
 171 #ifdef SA_RESETHAND
 172         /*
 173          * we do not call talloc_free(se2)
 174          * because it is already gone,
 175          * after triggering the event handler.
 176          */
 177 #endif
 178
 179 #ifdef SA_SIGINFO
 180         talloc_free(se3);
 181         torture_assert_int_equal(test, info_count, fde_count+fde_wcount, "info count mismatch");
 182 #endif
 183
 184         talloc_free(ev_ctx);
 185
 186         return true;
 187 }
 188
 189 struct test_event_fd1_state {
 190         struct torture_context *tctx;
 191         const char *backend;
 192         struct tevent_context *ev;
 193         int sock[2];
 194         struct tevent_timer *te;
 195         struct tevent_fd *fde0;
 196         struct tevent_fd *fde1;
 197         bool got_write;
 198         bool got_read;
 199         unsigned loop_count;
 200         bool finished;
 201         const char *error;
 202 };
 203
 204 static void test_event_fd1_fde_handler(struct tevent_context *ev_ctx,
 205                                        struct tevent_fd *fde,
 206                                        uint16_t flags,
 207                                        void *private_data)
 208 {
 209         struct test_event_fd1_state *state =
 210                 (struct test_event_fd1_state *)private_data;
 211
 212         if (!state->got_write) {
 213                 uint8_t c = 0;
 214
 215                 if (flags != TEVENT_FD_WRITE) {
 216                         state->finished = true;
 217                         state->error = __location__;
 218                         return;
 219                 }
 220                 state->got_write = true;
 221
 222                 /*
 223                  * we write to the other socket...
 224                  */
 225                 write(state->sock[1], &c, 1);
 226                 TEVENT_FD_NOT_WRITEABLE(fde);
 227                 TEVENT_FD_READABLE(fde);
 228                 return;
 229         }
 230
 231         if (!state->got_read) {
 232                 if (flags != TEVENT_FD_READ) {
 233                         state->finished = true;
 234                         state->error = __location__;
 235                         return;
 236                 }
 237                 state->got_read = true;
 238
 239                 TEVENT_FD_NOT_READABLE(fde);
 240                 return;
 241         }
 242
 243         state->finished = true;
 244         state->error = __location__;
 245         return;
 246 }
 247
 248 static void test_event_fd1_finished(struct tevent_context *ev_ctx,
 249                                     struct tevent_timer *te,
 250                                     struct timeval tval,
 251                                     void *private_data)
 252 {
 253         struct test_event_fd1_state *state =
 254                 (struct test_event_fd1_state *)private_data;
 255
 256         if (!state->got_write) {
 257                 state->finished = true;
 258                 state->error = __location__;
 259                 return;
 260         }
 261
 262         if (!state->got_read) {
 263                 state->finished = true;
 264                 state->error = __location__;
 265                 return;
 266         }
 267
 268         state->loop_count++;
 269         if (state->loop_count > 2) {
 270                 state->finished = true;
 271                 return;
 272         }
 273
 274         state->got_write = false;
 275         state->got_read = false;
 276
 277         tevent_fd_set_flags(state->fde0, TEVENT_FD_WRITE);
 278
 279         state->te = tevent_add_timer(state->ev, state->ev,
 280                                     timeval_current_ofs(0,1000),
 281                                     test_event_fd1_finished, state);
 282 }
 283
 284 static bool test_event_fd1(struct torture_context *tctx,
 285                            const void *test_data)
 286 {
 287         struct test_event_fd1_state state;
 288
 289         ZERO_STRUCT(state);
 290         state.tctx = tctx;
 291         state.backend = (const char *)test_data;
 292
 293         state.ev = tevent_context_init_byname(tctx, state.backend);
 294         if (state.ev == NULL) {
 295                 torture_skip(tctx, talloc_asprintf(tctx,
 296                              "event backend '%s' not supported\n",
 297                              state.backend));
 298                 return true;
 299         }
 300
 301         tevent_set_debug_stderr(state.ev);
 302         torture_comment(tctx, "backend '%s' - %s\n",
 303                         state.backend, __FUNCTION__);
 304
 305         /*
 306          * This tests the following:
 307          *
 308          * It monitors the state of state.sock[0]
 309          * with tevent_fd, but we never read/write on state.sock[0]
 310          * while state.sock[1] * is only used to write a few bytes.
 311          *
 312          * We have a loop:
 313          *   - we wait only for TEVENT_FD_WRITE on state.sock[0]
 314          *   - we write 1 byte to state.sock[1]
 315          *   - we wait only for TEVENT_FD_READ on state.sock[0]
 316          *   - we disable events on state.sock[0]
 317          *   - the timer event restarts the loop
 318          */
 319         state.sock[0] = -1;
 320         state.sock[1] = -1;
 321         socketpair(AF_UNIX, SOCK_STREAM, 0, state.sock);
 322
 323         state.te = tevent_add_timer(state.ev, state.ev,
 324                                     timeval_current_ofs(0,1000),
 325                                     test_event_fd1_finished, &state);
 326         state.fde0 = tevent_add_fd(state.ev, state.ev,
 327                                    state.sock[0], TEVENT_FD_WRITE,
 328                                    test_event_fd1_fde_handler, &state);
 329         /* state.fde1 is only used to auto close */
 330         state.fde1 = tevent_add_fd(state.ev, state.ev,
 331                                    state.sock[1], 0,
 332                                    test_event_fd1_fde_handler, &state);
 333
 334         tevent_fd_set_auto_close(state.fde0);
 335         tevent_fd_set_auto_close(state.fde1);
 336
 337         while (!state.finished) {
 338                 errno = 0;
 339                 if (tevent_loop_once(state.ev) == -1) {
 340                         talloc_free(state.ev);
 341                         torture_fail(tctx, talloc_asprintf(tctx,
 342                                      "Failed event loop %s\n",
 343                                      strerror(errno)));
 344                 }
 345         }
 346
 347         talloc_free(state.ev);
 348
 349         torture_assert(tctx, state.error == NULL, talloc_asprintf(tctx,
 350                        "%s", state.error));
 351
 352         return true;
 353 }
 354
 355 struct test_event_fd2_state {
 356         struct torture_context *tctx;
 357         const char *backend;
 358         struct tevent_context *ev;
 359         struct tevent_timer *te;
 360         struct test_event_fd2_sock {
 361                 struct test_event_fd2_state *state;
 362                 int fd;
 363                 struct tevent_fd *fde;
 364                 size_t num_written;
 365                 size_t num_read;
 366                 bool got_full;
 367         } sock0, sock1;
 368         bool finished;
 369         const char *error;
 370 };
 371
 372 static void test_event_fd2_sock_handler(struct tevent_context *ev_ctx,
 373                                         struct tevent_fd *fde,
 374                                         uint16_t flags,
 375                                         void *private_data)
 376 {
 377         struct test_event_fd2_sock *cur_sock =
 378                 (struct test_event_fd2_sock *)private_data;
 379         struct test_event_fd2_state *state = cur_sock->state;
 380         struct test_event_fd2_sock *oth_sock = NULL;
 381         uint8_t v = 0, c;
 382         ssize_t ret;
 383
 384         if (cur_sock == &state->sock0) {
 385                 oth_sock = &state->sock1;
 386         } else {
 387                 oth_sock = &state->sock0;
 388         }
 389
 390         if (oth_sock->num_written == 1) {
 391                 if (flags != (TEVENT_FD_READ | TEVENT_FD_WRITE)) {
 392                         state->finished = true;
 393                         state->error = __location__;
 394                         return;
 395                 }
 396         }
 397
 398         if (cur_sock->num_read == oth_sock->num_written) {
 399                 state->finished = true;
 400                 state->error = __location__;
 401                 return;
 402         }
 403
 404         if (!(flags & TEVENT_FD_READ)) {
 405                 state->finished = true;
 406                 state->error = __location__;
 407                 return;
 408         }
 409
 410         if (oth_sock->num_read > 0) {
 411                 /*
 412                  * There should be room to write a byte again
 413                  */
 414                 if (!(flags & TEVENT_FD_WRITE)) {
 415                         state->finished = true;
 416                         state->error = __location__;
 417                         return;
 418                 }
 419         }
 420
 421         if ((flags & TEVENT_FD_WRITE) && !cur_sock->got_full) {
 422                 v = (uint8_t)cur_sock->num_written;
 423                 ret = write(cur_sock->fd, &v, 1);
 424                 if (ret != 1) {
 425                         state->finished = true;
 426                         state->error = __location__;
 427                         return;
 428                 }
 429                 cur_sock->num_written++;
 430                 if (cur_sock->num_written > 0x80000000) {
 431                         state->finished = true;
 432                         state->error = __location__;
 433                         return;
 434                 }
 435                 return;
 436         }
 437
 438         if (!cur_sock->got_full) {
 439                 cur_sock->got_full = true;
 440
 441                 if (!oth_sock->got_full) {
 442                         /*
 443                          * cur_sock is full,
 444                          * lets wait for oth_sock
 445                          * to be filled
 446                          */
 447                         tevent_fd_set_flags(cur_sock->fde, 0);
 448                         return;
 449                 }
 450
 451                 /*
 452                  * oth_sock waited for cur_sock,
 453                  * lets restart it
 454                  */
 455                 tevent_fd_set_flags(oth_sock->fde,
 456                                     TEVENT_FD_READ|TEVENT_FD_WRITE);
 457         }
 458
 459         ret = read(cur_sock->fd, &v, 1);
 460         if (ret != 1) {
 461                 state->finished = true;
 462                 state->error = __location__;
 463                 return;
 464         }
 465         c = (uint8_t)cur_sock->num_read;
 466         if (c != v) {
 467                 state->finished = true;
 468                 state->error = __location__;
 469                 return;
 470         }
 471         cur_sock->num_read++;
 472
 473         if (cur_sock->num_read < oth_sock->num_written) {
 474                 /* there is more to read */
 475                 return;
 476         }
 477         /*
 478          * we read everything, we need to remove TEVENT_FD_WRITE
 479          * to avoid spinning
 480          */
 481         TEVENT_FD_NOT_WRITEABLE(cur_sock->fde);
 482
 483         if (oth_sock->num_read == cur_sock->num_written) {
 484                 /*
 485                  * both directions are finished
 486                  */
 487                 state->finished = true;
 488         }
 489
 490         return;
 491 }
 492
 493 static void test_event_fd2_finished(struct tevent_context *ev_ctx,
 494                                     struct tevent_timer *te,
 495                                     struct timeval tval,
 496                                     void *private_data)
 497 {
 498         struct test_event_fd2_state *state =
 499                 (struct test_event_fd2_state *)private_data;
 500
 501         /*
 502          * this should never be triggered
 503          */
 504         state->finished = true;
 505         state->error = __location__;
 506 }
 507
 508 static bool test_event_fd2(struct torture_context *tctx,
 509                            const void *test_data)
 510 {
 511         struct test_event_fd2_state state;
 512         int sock[2];
 513         uint8_t c = 0;
 514
 515         ZERO_STRUCT(state);
 516         state.tctx = tctx;
 517         state.backend = (const char *)test_data;
 518
 519         state.ev = tevent_context_init_byname(tctx, state.backend);
 520         if (state.ev == NULL) {
 521                 torture_skip(tctx, talloc_asprintf(tctx,
 522                              "event backend '%s' not supported\n",
 523                              state.backend));
 524                 return true;
 525         }
 526
 527         tevent_set_debug_stderr(state.ev);
 528         torture_comment(tctx, "backend '%s' - %s\n",
 529                         state.backend, __FUNCTION__);
 530
 531         /*
 532          * This tests the following
 533          *
 534          * - We write 1 byte to each socket
 535          * - We wait for TEVENT_FD_READ/WRITE on both sockets
 536          * - When we get TEVENT_FD_WRITE we write 1 byte
 537          */
 538         sock[0] = -1;
 539         sock[1] = -1;
 540         socketpair(AF_UNIX, SOCK_STREAM, 0, sock);
 541
 542         /*
 543          * the timer should never expire
 544          */
 545         state.te = tevent_add_timer(state.ev, state.ev,
 546                                     timeval_current_ofs(600, 0),
 547                                     test_event_fd2_finished, &state);
 548         state.sock0.state = &state;
 549         state.sock0.fd = sock[0];
 550         state.sock0.fde = tevent_add_fd(state.ev, state.ev,
 551                                         state.sock0.fd,
 552                                         TEVENT_FD_READ | TEVENT_FD_WRITE,
 553                                         test_event_fd2_sock_handler,
 554                                         &state.sock0);
 555         state.sock1.state = &state;
 556         state.sock1.fd = sock[1];
 557         state.sock1.fde = tevent_add_fd(state.ev, state.ev,
 558                                         state.sock1.fd,
 559                                         TEVENT_FD_READ | TEVENT_FD_WRITE,
 560                                         test_event_fd2_sock_handler,
 561                                         &state.sock1);
 562
 563         tevent_fd_set_auto_close(state.sock0.fde);
 564         tevent_fd_set_auto_close(state.sock1.fde);
 565
 566         write(state.sock0.fd, &c, 1);
 567         state.sock0.num_written++;
 568         write(state.sock1.fd, &c, 1);
 569         state.sock1.num_written++;
 570
 571         while (!state.finished) {
 572                 errno = 0;
 573                 if (tevent_loop_once(state.ev) == -1) {
 574                         talloc_free(state.ev);
 575                         torture_fail(tctx, talloc_asprintf(tctx,
 576                                      "Failed event loop %s\n",
 577                                      strerror(errno)));
 578                 }
 579         }
 580
 581         talloc_free(state.ev);
 582
 583         torture_assert(tctx, state.error == NULL, talloc_asprintf(tctx,
 584                        "%s", state.error));
 585
 586         return true;
 587 }
 588
 589 #ifdef HAVE_PTHREAD
 590
 591 static pthread_mutex_t threaded_mutex = PTHREAD_MUTEX_INITIALIZER;
 592 static bool do_shutdown = false;
 593
 594 static void test_event_threaded_lock(void)
 595 {
 596         int ret;
 597         ret = pthread_mutex_lock(&threaded_mutex);
 598         assert(ret == 0);
 599 }
 600
 601 static void test_event_threaded_unlock(void)
 602 {
 603         int ret;
 604         ret = pthread_mutex_unlock(&threaded_mutex);
 605         assert(ret == 0);
 606 }
 607
 608 static void test_event_threaded_trace(enum tevent_trace_point point,
 609                                       void *private_data)
 610 {
 611         switch (point) {
 612         case TEVENT_TRACE_BEFORE_WAIT:
 613                 test_event_threaded_unlock();
 614                 break;
 615         case TEVENT_TRACE_AFTER_WAIT:
 616                 test_event_threaded_lock();
 617                 break;
 618         case TEVENT_TRACE_BEFORE_LOOP_ONCE:
 619         case TEVENT_TRACE_AFTER_LOOP_ONCE:
 620                 break;
 621         }
 622 }
 623
 624 static void test_event_threaded_timer(struct tevent_context *ev,
 625                                       struct tevent_timer *te,
 626                                       struct timeval current_time,
 627                                       void *private_data)
 628 {
 629         return;
 630 }
 631
 632 static void *test_event_poll_thread(void *private_data)
 633 {
 634         struct tevent_context *ev = (struct tevent_context *)private_data;
 635
 636         test_event_threaded_lock();
 637
 638         while (true) {
 639                 int ret;
 640                 ret = tevent_loop_once(ev);
 641                 assert(ret == 0);
 642                 if (do_shutdown) {
 643                         test_event_threaded_unlock();
 644                         return NULL;
 645                 }
 646         }
 647
 648 }
 649
 650 static void test_event_threaded_read_handler(struct tevent_context *ev,
 651                                              struct tevent_fd *fde,
 652                                              uint16_t flags,
 653                                              void *private_data)
 654 {
 655         int *pfd = (int *)private_data;
 656         char c;
 657         ssize_t nread;
 658
 659         if ((flags & TEVENT_FD_READ) == 0) {
 660                 return;
 661         }
 662
 663         do {
 664                 nread = read(*pfd, &c, 1);
 665         } while ((nread == -1) && (errno == EINTR));
 666
 667         assert(nread == 1);
 668 }
 669
 670 static bool test_event_context_threaded(struct torture_context *test,
 671                                         const void *test_data)
 672 {
 673         struct tevent_context *ev;
 674         struct tevent_timer *te;
 675         struct tevent_fd *fde;
 676         pthread_t poll_thread;
 677         int fds[2];
 678         int ret;
 679         char c = 0;
 680
 681         ev = tevent_context_init_byname(test, "poll_mt");
 682         torture_assert(test, ev != NULL, "poll_mt not supported");
 683
 684         tevent_set_trace_callback(ev, test_event_threaded_trace, NULL);
 685
 686         te = tevent_add_timer(ev, ev, timeval_current_ofs(5, 0),
 687                               test_event_threaded_timer, NULL);
 688         torture_assert(test, te != NULL, "Could not add timer");
 689
 690         ret = pthread_create(&poll_thread, NULL, test_event_poll_thread, ev);
 691         torture_assert(test, ret == 0, "Could not create poll thread");
 692
 693         ret = pipe(fds);
 694         torture_assert(test, ret == 0, "Could not create pipe");
 695
 696         poll(NULL, 0, 100);
 697
 698         test_event_threaded_lock();
 699
 700         fde = tevent_add_fd(ev, ev, fds[0], TEVENT_FD_READ,
 701                             test_event_threaded_read_handler, &fds[0]);
 702         torture_assert(test, fde != NULL, "Could not add fd event");
 703
 704         test_event_threaded_unlock();
 705
 706         poll(NULL, 0, 100);
 707
 708         write(fds[1], &c, 1);
 709
 710         poll(NULL, 0, 100);
 711
 712         test_event_threaded_lock();
 713         do_shutdown = true;
 714         test_event_threaded_unlock();
 715
 716         write(fds[1], &c, 1);
 717
 718         ret = pthread_join(poll_thread, NULL);
 719         torture_assert(test, ret == 0, "pthread_join failed");
 720
 721         return true;
 722 }
 723
 724 #endif
 725
 726 struct torture_suite *torture_local_event(TALLOC_CTX *mem_ctx)
 727 {
 728         struct torture_suite *suite = torture_suite_create(mem_ctx, "event");
 729         const char **list = tevent_backend_list(suite);
 730         int i;
 731
 732         for (i=0;list && list[i];i++) {
 733                 torture_suite_add_simple_tcase_const(suite,
 734                                                talloc_asprintf(suite,
 735                                                "%s.%s", list[i], "context"),
 736                                                test_event_context,
 737                                                (const void *)list[i]);
 738                 torture_suite_add_simple_tcase_const(suite,
 739                                                talloc_asprintf(suite,
 740                                                "%s.%s", list[i], "fd1"),
 741                                                test_event_fd1,
 742                                                (const void *)list[i]);
 743                 torture_suite_add_simple_tcase_const(suite,
 744                                                talloc_asprintf(suite,
 745                                                "%s.%s", list[i], "fd2"),
 746                                                test_event_fd2,
 747                                                (const void *)list[i]);
 748         }
 749
 750 #ifdef HAVE_PTHREAD
 751         torture_suite_add_simple_tcase_const(suite, "poll_mt_threaded",
 752                                              test_event_context_threaded,
 753                                              NULL);
 754 #endif
 755
 756         return suite;
 757 }