1// SPDX-License-Identifier: GPL-2.0 2 3#define _GNU_SOURCE 4#include <asm/unistd.h> 5#include <linux/time_types.h> 6#include <poll.h> 7#include <unistd.h> 8#include <assert.h> 9#include <signal.h> 10#include <pthread.h> 11#include <sys/epoll.h> 12#include <sys/socket.h> 13#include <sys/eventfd.h> 14#include "../../kselftest_harness.h" 15 16struct epoll_mtcontext 17{ 18 int efd[3]; 19 int sfd[4]; 20 volatile int count; 21 22 pthread_t main; 23 pthread_t waiter; 24}; 25 26#ifndef __NR_epoll_pwait2 27#define __NR_epoll_pwait2 -1 28#endif 29 30static inline int sys_epoll_pwait2(int fd, struct epoll_event *events, 31 int maxevents, 32 const struct __kernel_timespec *timeout, 33 const sigset_t *sigset, size_t sigsetsize) 34{ 35 return syscall(__NR_epoll_pwait2, fd, events, maxevents, timeout, 36 sigset, sigsetsize); 37} 38 39static void signal_handler(int signum) 40{ 41} 42 43static void kill_timeout(struct epoll_mtcontext *ctx) 44{ 45 usleep(1000000); 46 pthread_kill(ctx->main, SIGUSR1); 47 pthread_kill(ctx->waiter, SIGUSR1); 48} 49 50static void *waiter_entry1a(void *data) 51{ 52 struct epoll_event e; 53 struct epoll_mtcontext *ctx = data; 54 55 if (epoll_wait(ctx->efd[0], &e, 1, -1) > 0) 56 __sync_fetch_and_add(&ctx->count, 1); 57 58 return NULL; 59} 60 61static void *waiter_entry1ap(void *data) 62{ 63 struct pollfd pfd; 64 struct epoll_event e; 65 struct epoll_mtcontext *ctx = data; 66 67 pfd.fd = ctx->efd[0]; 68 pfd.events = POLLIN; 69 if (poll(&pfd, 1, -1) > 0) { 70 if (epoll_wait(ctx->efd[0], &e, 1, 0) > 0) 71 __sync_fetch_and_add(&ctx->count, 1); 72 } 73 74 return NULL; 75} 76 77static void *waiter_entry1o(void *data) 78{ 79 struct epoll_event e; 80 struct epoll_mtcontext *ctx = data; 81 82 if (epoll_wait(ctx->efd[0], &e, 1, -1) > 0) 83 __sync_fetch_and_or(&ctx->count, 1); 84 85 return NULL; 86} 87 88static void *waiter_entry1op(void *data) 89{ 90 struct pollfd pfd; 91 struct epoll_event e; 92 struct epoll_mtcontext *ctx = data; 93 94 pfd.fd = ctx->efd[0]; 95 pfd.events = POLLIN; 96 if (poll(&pfd, 1, -1) > 0) { 97 if (epoll_wait(ctx->efd[0], &e, 1, 0) > 0) 98 __sync_fetch_and_or(&ctx->count, 1); 99 } 100 101 return NULL; 102} 103 104static void *waiter_entry2a(void *data) 105{ 106 struct epoll_event events[2]; 107 struct epoll_mtcontext *ctx = data; 108 109 if (epoll_wait(ctx->efd[0], events, 2, -1) > 0) 110 __sync_fetch_and_add(&ctx->count, 1); 111 112 return NULL; 113} 114 115static void *waiter_entry2ap(void *data) 116{ 117 struct pollfd pfd; 118 struct epoll_event events[2]; 119 struct epoll_mtcontext *ctx = data; 120 121 pfd.fd = ctx->efd[0]; 122 pfd.events = POLLIN; 123 if (poll(&pfd, 1, -1) > 0) { 124 if (epoll_wait(ctx->efd[0], events, 2, 0) > 0) 125 __sync_fetch_and_add(&ctx->count, 1); 126 } 127 128 return NULL; 129} 130 131static void *emitter_entry1(void *data) 132{ 133 struct epoll_mtcontext *ctx = data; 134 135 usleep(100000); 136 write(ctx->sfd[1], "w", 1); 137 138 kill_timeout(ctx); 139 140 return NULL; 141} 142 143static void *emitter_entry2(void *data) 144{ 145 struct epoll_mtcontext *ctx = data; 146 147 usleep(100000); 148 write(ctx->sfd[1], "w", 1); 149 write(ctx->sfd[3], "w", 1); 150 151 kill_timeout(ctx); 152 153 return NULL; 154} 155 156/* 157 * t0 158 * | (ew) 159 * e0 160 * | (lt) 161 * s0 162 */ 163TEST(epoll1) 164{ 165 int efd; 166 int sfd[2]; 167 struct epoll_event e; 168 169 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0); 170 171 efd = epoll_create(1); 172 ASSERT_GE(efd, 0); 173 174 e.events = EPOLLIN; 175 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0); 176 177 ASSERT_EQ(write(sfd[1], "w", 1), 1); 178 179 EXPECT_EQ(epoll_wait(efd, &e, 1, 0), 1); 180 EXPECT_EQ(epoll_wait(efd, &e, 1, 0), 1); 181 182 close(efd); 183 close(sfd[0]); 184 close(sfd[1]); 185} 186 187/* 188 * t0 189 * | (ew) 190 * e0 191 * | (et) 192 * s0 193 */ 194TEST(epoll2) 195{ 196 int efd; 197 int sfd[2]; 198 struct epoll_event e; 199 200 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0); 201 202 efd = epoll_create(1); 203 ASSERT_GE(efd, 0); 204 205 e.events = EPOLLIN | EPOLLET; 206 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0); 207 208 ASSERT_EQ(write(sfd[1], "w", 1), 1); 209 210 EXPECT_EQ(epoll_wait(efd, &e, 1, 0), 1); 211 EXPECT_EQ(epoll_wait(efd, &e, 1, 0), 0); 212 213 close(efd); 214 close(sfd[0]); 215 close(sfd[1]); 216} 217 218/* 219 * t0 220 * | (ew) 221 * e0 222 * (lt) / \ (lt) 223 * s0 s2 224 */ 225TEST(epoll3) 226{ 227 int efd; 228 int sfd[4]; 229 struct epoll_event events[2]; 230 231 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0); 232 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0); 233 234 efd = epoll_create(1); 235 ASSERT_GE(efd, 0); 236 237 events[0].events = EPOLLIN; 238 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], events), 0); 239 240 events[0].events = EPOLLIN; 241 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[2], events), 0); 242 243 ASSERT_EQ(write(sfd[1], "w", 1), 1); 244 ASSERT_EQ(write(sfd[3], "w", 1), 1); 245 246 EXPECT_EQ(epoll_wait(efd, events, 2, 0), 2); 247 EXPECT_EQ(epoll_wait(efd, events, 2, 0), 2); 248 249 close(efd); 250 close(sfd[0]); 251 close(sfd[1]); 252 close(sfd[2]); 253 close(sfd[3]); 254} 255 256/* 257 * t0 258 * | (ew) 259 * e0 260 * (et) / \ (et) 261 * s0 s2 262 */ 263TEST(epoll4) 264{ 265 int efd; 266 int sfd[4]; 267 struct epoll_event events[2]; 268 269 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0); 270 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0); 271 272 efd = epoll_create(1); 273 ASSERT_GE(efd, 0); 274 275 events[0].events = EPOLLIN | EPOLLET; 276 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], events), 0); 277 278 events[0].events = EPOLLIN | EPOLLET; 279 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[2], events), 0); 280 281 ASSERT_EQ(write(sfd[1], "w", 1), 1); 282 ASSERT_EQ(write(sfd[3], "w", 1), 1); 283 284 EXPECT_EQ(epoll_wait(efd, events, 2, 0), 2); 285 EXPECT_EQ(epoll_wait(efd, events, 2, 0), 0); 286 287 close(efd); 288 close(sfd[0]); 289 close(sfd[1]); 290 close(sfd[2]); 291 close(sfd[3]); 292} 293 294/* 295 * t0 296 * | (p) 297 * e0 298 * | (lt) 299 * s0 300 */ 301TEST(epoll5) 302{ 303 int efd; 304 int sfd[2]; 305 struct pollfd pfd; 306 struct epoll_event e; 307 308 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0); 309 310 efd = epoll_create(1); 311 ASSERT_GE(efd, 0); 312 313 e.events = EPOLLIN; 314 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0); 315 316 ASSERT_EQ(write(sfd[1], "w", 1), 1); 317 318 pfd.fd = efd; 319 pfd.events = POLLIN; 320 ASSERT_EQ(poll(&pfd, 1, 0), 1); 321 ASSERT_EQ(epoll_wait(efd, &e, 1, 0), 1); 322 323 pfd.fd = efd; 324 pfd.events = POLLIN; 325 ASSERT_EQ(poll(&pfd, 1, 0), 1); 326 ASSERT_EQ(epoll_wait(efd, &e, 1, 0), 1); 327 328 close(efd); 329 close(sfd[0]); 330 close(sfd[1]); 331} 332 333/* 334 * t0 335 * | (p) 336 * e0 337 * | (et) 338 * s0 339 */ 340TEST(epoll6) 341{ 342 int efd; 343 int sfd[2]; 344 struct pollfd pfd; 345 struct epoll_event e; 346 347 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0); 348 349 efd = epoll_create(1); 350 ASSERT_GE(efd, 0); 351 352 e.events = EPOLLIN | EPOLLET; 353 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0); 354 355 ASSERT_EQ(write(sfd[1], "w", 1), 1); 356 357 pfd.fd = efd; 358 pfd.events = POLLIN; 359 ASSERT_EQ(poll(&pfd, 1, 0), 1); 360 ASSERT_EQ(epoll_wait(efd, &e, 1, 0), 1); 361 362 pfd.fd = efd; 363 pfd.events = POLLIN; 364 ASSERT_EQ(poll(&pfd, 1, 0), 0); 365 ASSERT_EQ(epoll_wait(efd, &e, 1, 0), 0); 366 367 close(efd); 368 close(sfd[0]); 369 close(sfd[1]); 370} 371 372/* 373 * t0 374 * | (p) 375 * e0 376 * (lt) / \ (lt) 377 * s0 s2 378 */ 379 380TEST(epoll7) 381{ 382 int efd; 383 int sfd[4]; 384 struct pollfd pfd; 385 struct epoll_event events[2]; 386 387 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0); 388 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0); 389 390 efd = epoll_create(1); 391 ASSERT_GE(efd, 0); 392 393 events[0].events = EPOLLIN; 394 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], events), 0); 395 396 events[0].events = EPOLLIN; 397 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[2], events), 0); 398 399 ASSERT_EQ(write(sfd[1], "w", 1), 1); 400 ASSERT_EQ(write(sfd[3], "w", 1), 1); 401 402 pfd.fd = efd; 403 pfd.events = POLLIN; 404 EXPECT_EQ(poll(&pfd, 1, 0), 1); 405 EXPECT_EQ(epoll_wait(efd, events, 2, 0), 2); 406 407 pfd.fd = efd; 408 pfd.events = POLLIN; 409 EXPECT_EQ(poll(&pfd, 1, 0), 1); 410 EXPECT_EQ(epoll_wait(efd, events, 2, 0), 2); 411 412 close(efd); 413 close(sfd[0]); 414 close(sfd[1]); 415 close(sfd[2]); 416 close(sfd[3]); 417} 418 419/* 420 * t0 421 * | (p) 422 * e0 423 * (et) / \ (et) 424 * s0 s2 425 */ 426TEST(epoll8) 427{ 428 int efd; 429 int sfd[4]; 430 struct pollfd pfd; 431 struct epoll_event events[2]; 432 433 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0); 434 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0); 435 436 efd = epoll_create(1); 437 ASSERT_GE(efd, 0); 438 439 events[0].events = EPOLLIN | EPOLLET; 440 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], events), 0); 441 442 events[0].events = EPOLLIN | EPOLLET; 443 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[2], events), 0); 444 445 ASSERT_EQ(write(sfd[1], "w", 1), 1); 446 ASSERT_EQ(write(sfd[3], "w", 1), 1); 447 448 pfd.fd = efd; 449 pfd.events = POLLIN; 450 EXPECT_EQ(poll(&pfd, 1, 0), 1); 451 EXPECT_EQ(epoll_wait(efd, events, 2, 0), 2); 452 453 pfd.fd = efd; 454 pfd.events = POLLIN; 455 EXPECT_EQ(poll(&pfd, 1, 0), 0); 456 EXPECT_EQ(epoll_wait(efd, events, 2, 0), 0); 457 458 close(efd); 459 close(sfd[0]); 460 close(sfd[1]); 461 close(sfd[2]); 462 close(sfd[3]); 463} 464 465/* 466 * t0 t1 467 * (ew) \ / (ew) 468 * e0 469 * | (lt) 470 * s0 471 */ 472TEST(epoll9) 473{ 474 pthread_t emitter; 475 struct epoll_event e; 476 struct epoll_mtcontext ctx = { 0 }; 477 478 signal(SIGUSR1, signal_handler); 479 480 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 481 482 ctx.efd[0] = epoll_create(1); 483 ASSERT_GE(ctx.efd[0], 0); 484 485 e.events = EPOLLIN; 486 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 487 488 ctx.main = pthread_self(); 489 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0); 490 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 491 492 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 493 __sync_fetch_and_add(&ctx.count, 1); 494 495 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 496 EXPECT_EQ(ctx.count, 2); 497 498 if (pthread_tryjoin_np(emitter, NULL) < 0) { 499 pthread_kill(emitter, SIGUSR1); 500 pthread_join(emitter, NULL); 501 } 502 503 close(ctx.efd[0]); 504 close(ctx.sfd[0]); 505 close(ctx.sfd[1]); 506} 507 508/* 509 * t0 t1 510 * (ew) \ / (ew) 511 * e0 512 * | (et) 513 * s0 514 */ 515TEST(epoll10) 516{ 517 pthread_t emitter; 518 struct epoll_event e; 519 struct epoll_mtcontext ctx = { 0 }; 520 521 signal(SIGUSR1, signal_handler); 522 523 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 524 525 ctx.efd[0] = epoll_create(1); 526 ASSERT_GE(ctx.efd[0], 0); 527 528 e.events = EPOLLIN | EPOLLET; 529 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 530 531 ctx.main = pthread_self(); 532 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0); 533 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 534 535 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 536 __sync_fetch_and_add(&ctx.count, 1); 537 538 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 539 EXPECT_EQ(ctx.count, 1); 540 541 if (pthread_tryjoin_np(emitter, NULL) < 0) { 542 pthread_kill(emitter, SIGUSR1); 543 pthread_join(emitter, NULL); 544 } 545 546 close(ctx.efd[0]); 547 close(ctx.sfd[0]); 548 close(ctx.sfd[1]); 549} 550 551/* 552 * t0 t1 553 * (ew) \ / (ew) 554 * e0 555 * (lt) / \ (lt) 556 * s0 s2 557 */ 558TEST(epoll11) 559{ 560 pthread_t emitter; 561 struct epoll_event events[2]; 562 struct epoll_mtcontext ctx = { 0 }; 563 564 signal(SIGUSR1, signal_handler); 565 566 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0); 567 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0); 568 569 ctx.efd[0] = epoll_create(1); 570 ASSERT_GE(ctx.efd[0], 0); 571 572 events[0].events = EPOLLIN; 573 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], events), 0); 574 575 events[0].events = EPOLLIN; 576 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[2], events), 0); 577 578 ctx.main = pthread_self(); 579 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry2a, &ctx), 0); 580 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0); 581 582 if (epoll_wait(ctx.efd[0], events, 2, -1) > 0) 583 __sync_fetch_and_add(&ctx.count, 1); 584 585 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 586 EXPECT_EQ(ctx.count, 2); 587 588 if (pthread_tryjoin_np(emitter, NULL) < 0) { 589 pthread_kill(emitter, SIGUSR1); 590 pthread_join(emitter, NULL); 591 } 592 593 close(ctx.efd[0]); 594 close(ctx.sfd[0]); 595 close(ctx.sfd[1]); 596 close(ctx.sfd[2]); 597 close(ctx.sfd[3]); 598} 599 600/* 601 * t0 t1 602 * (ew) \ / (ew) 603 * e0 604 * (et) / \ (et) 605 * s0 s2 606 */ 607TEST(epoll12) 608{ 609 pthread_t emitter; 610 struct epoll_event events[2]; 611 struct epoll_mtcontext ctx = { 0 }; 612 613 signal(SIGUSR1, signal_handler); 614 615 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0); 616 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0); 617 618 ctx.efd[0] = epoll_create(1); 619 ASSERT_GE(ctx.efd[0], 0); 620 621 events[0].events = EPOLLIN | EPOLLET; 622 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], events), 0); 623 624 events[0].events = EPOLLIN | EPOLLET; 625 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[2], events), 0); 626 627 ctx.main = pthread_self(); 628 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0); 629 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0); 630 631 if (epoll_wait(ctx.efd[0], events, 1, -1) > 0) 632 __sync_fetch_and_add(&ctx.count, 1); 633 634 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 635 EXPECT_EQ(ctx.count, 2); 636 637 if (pthread_tryjoin_np(emitter, NULL) < 0) { 638 pthread_kill(emitter, SIGUSR1); 639 pthread_join(emitter, NULL); 640 } 641 642 close(ctx.efd[0]); 643 close(ctx.sfd[0]); 644 close(ctx.sfd[1]); 645 close(ctx.sfd[2]); 646 close(ctx.sfd[3]); 647} 648 649/* 650 * t0 t1 651 * (ew) \ / (p) 652 * e0 653 * | (lt) 654 * s0 655 */ 656TEST(epoll13) 657{ 658 pthread_t emitter; 659 struct epoll_event e; 660 struct epoll_mtcontext ctx = { 0 }; 661 662 signal(SIGUSR1, signal_handler); 663 664 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 665 666 ctx.efd[0] = epoll_create(1); 667 ASSERT_GE(ctx.efd[0], 0); 668 669 e.events = EPOLLIN; 670 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 671 672 ctx.main = pthread_self(); 673 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 674 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 675 676 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 677 __sync_fetch_and_add(&ctx.count, 1); 678 679 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 680 EXPECT_EQ(ctx.count, 2); 681 682 if (pthread_tryjoin_np(emitter, NULL) < 0) { 683 pthread_kill(emitter, SIGUSR1); 684 pthread_join(emitter, NULL); 685 } 686 687 close(ctx.efd[0]); 688 close(ctx.sfd[0]); 689 close(ctx.sfd[1]); 690} 691 692/* 693 * t0 t1 694 * (ew) \ / (p) 695 * e0 696 * | (et) 697 * s0 698 */ 699TEST(epoll14) 700{ 701 pthread_t emitter; 702 struct epoll_event e; 703 struct epoll_mtcontext ctx = { 0 }; 704 705 signal(SIGUSR1, signal_handler); 706 707 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 708 709 ctx.efd[0] = epoll_create(1); 710 ASSERT_GE(ctx.efd[0], 0); 711 712 e.events = EPOLLIN | EPOLLET; 713 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 714 715 ctx.main = pthread_self(); 716 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 717 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 718 719 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 720 __sync_fetch_and_add(&ctx.count, 1); 721 722 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 723 EXPECT_EQ(ctx.count, 1); 724 725 if (pthread_tryjoin_np(emitter, NULL) < 0) { 726 pthread_kill(emitter, SIGUSR1); 727 pthread_join(emitter, NULL); 728 } 729 730 close(ctx.efd[0]); 731 close(ctx.sfd[0]); 732 close(ctx.sfd[1]); 733} 734 735/* 736 * t0 t1 737 * (ew) \ / (p) 738 * e0 739 * (lt) / \ (lt) 740 * s0 s2 741 */ 742TEST(epoll15) 743{ 744 pthread_t emitter; 745 struct epoll_event events[2]; 746 struct epoll_mtcontext ctx = { 0 }; 747 748 signal(SIGUSR1, signal_handler); 749 750 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0); 751 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0); 752 753 ctx.efd[0] = epoll_create(1); 754 ASSERT_GE(ctx.efd[0], 0); 755 756 events[0].events = EPOLLIN; 757 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], events), 0); 758 759 events[0].events = EPOLLIN; 760 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[2], events), 0); 761 762 ctx.main = pthread_self(); 763 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry2ap, &ctx), 0); 764 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0); 765 766 if (epoll_wait(ctx.efd[0], events, 2, -1) > 0) 767 __sync_fetch_and_add(&ctx.count, 1); 768 769 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 770 EXPECT_EQ(ctx.count, 2); 771 772 if (pthread_tryjoin_np(emitter, NULL) < 0) { 773 pthread_kill(emitter, SIGUSR1); 774 pthread_join(emitter, NULL); 775 } 776 777 close(ctx.efd[0]); 778 close(ctx.sfd[0]); 779 close(ctx.sfd[1]); 780 close(ctx.sfd[2]); 781 close(ctx.sfd[3]); 782} 783 784/* 785 * t0 t1 786 * (ew) \ / (p) 787 * e0 788 * (et) / \ (et) 789 * s0 s2 790 */ 791TEST(epoll16) 792{ 793 pthread_t emitter; 794 struct epoll_event events[2]; 795 struct epoll_mtcontext ctx = { 0 }; 796 797 signal(SIGUSR1, signal_handler); 798 799 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0); 800 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0); 801 802 ctx.efd[0] = epoll_create(1); 803 ASSERT_GE(ctx.efd[0], 0); 804 805 events[0].events = EPOLLIN | EPOLLET; 806 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], events), 0); 807 808 events[0].events = EPOLLIN | EPOLLET; 809 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[2], events), 0); 810 811 ctx.main = pthread_self(); 812 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 813 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0); 814 815 if (epoll_wait(ctx.efd[0], events, 1, -1) > 0) 816 __sync_fetch_and_add(&ctx.count, 1); 817 818 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 819 EXPECT_EQ(ctx.count, 2); 820 821 if (pthread_tryjoin_np(emitter, NULL) < 0) { 822 pthread_kill(emitter, SIGUSR1); 823 pthread_join(emitter, NULL); 824 } 825 826 close(ctx.efd[0]); 827 close(ctx.sfd[0]); 828 close(ctx.sfd[1]); 829 close(ctx.sfd[2]); 830 close(ctx.sfd[3]); 831} 832 833/* 834 * t0 835 * | (ew) 836 * e0 837 * | (lt) 838 * e1 839 * | (lt) 840 * s0 841 */ 842TEST(epoll17) 843{ 844 int efd[2]; 845 int sfd[2]; 846 struct epoll_event e; 847 848 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0); 849 850 efd[0] = epoll_create(1); 851 ASSERT_GE(efd[0], 0); 852 853 efd[1] = epoll_create(1); 854 ASSERT_GE(efd[1], 0); 855 856 e.events = EPOLLIN; 857 ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0); 858 859 e.events = EPOLLIN; 860 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0); 861 862 ASSERT_EQ(write(sfd[1], "w", 1), 1); 863 864 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1); 865 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1); 866 867 close(efd[0]); 868 close(efd[1]); 869 close(sfd[0]); 870 close(sfd[1]); 871} 872 873/* 874 * t0 875 * | (ew) 876 * e0 877 * | (lt) 878 * e1 879 * | (et) 880 * s0 881 */ 882TEST(epoll18) 883{ 884 int efd[2]; 885 int sfd[2]; 886 struct epoll_event e; 887 888 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0); 889 890 efd[0] = epoll_create(1); 891 ASSERT_GE(efd[0], 0); 892 893 efd[1] = epoll_create(1); 894 ASSERT_GE(efd[1], 0); 895 896 e.events = EPOLLIN | EPOLLET; 897 ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0); 898 899 e.events = EPOLLIN; 900 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0); 901 902 ASSERT_EQ(write(sfd[1], "w", 1), 1); 903 904 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1); 905 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1); 906 907 close(efd[0]); 908 close(efd[1]); 909 close(sfd[0]); 910 close(sfd[1]); 911} 912 913/* 914 * t0 915 * | (ew) 916 * e0 917 * | (et) 918 * e1 919 * | (lt) 920 * s0 921 */ 922TEST(epoll19) 923{ 924 int efd[2]; 925 int sfd[2]; 926 struct epoll_event e; 927 928 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0); 929 930 efd[0] = epoll_create(1); 931 ASSERT_GE(efd[0], 0); 932 933 efd[1] = epoll_create(1); 934 ASSERT_GE(efd[1], 0); 935 936 e.events = EPOLLIN; 937 ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0); 938 939 e.events = EPOLLIN | EPOLLET; 940 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0); 941 942 ASSERT_EQ(write(sfd[1], "w", 1), 1); 943 944 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1); 945 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 0); 946 947 close(efd[0]); 948 close(efd[1]); 949 close(sfd[0]); 950 close(sfd[1]); 951} 952 953/* 954 * t0 955 * | (ew) 956 * e0 957 * | (et) 958 * e1 959 * | (et) 960 * s0 961 */ 962TEST(epoll20) 963{ 964 int efd[2]; 965 int sfd[2]; 966 struct epoll_event e; 967 968 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0); 969 970 efd[0] = epoll_create(1); 971 ASSERT_GE(efd[0], 0); 972 973 efd[1] = epoll_create(1); 974 ASSERT_GE(efd[1], 0); 975 976 e.events = EPOLLIN | EPOLLET; 977 ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0); 978 979 e.events = EPOLLIN | EPOLLET; 980 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0); 981 982 ASSERT_EQ(write(sfd[1], "w", 1), 1); 983 984 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1); 985 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 0); 986 987 close(efd[0]); 988 close(efd[1]); 989 close(sfd[0]); 990 close(sfd[1]); 991} 992 993/* 994 * t0 995 * | (p) 996 * e0 997 * | (lt) 998 * e1 999 * | (lt) 1000 * s0 1001 */ 1002TEST(epoll21) 1003{ 1004 int efd[2]; 1005 int sfd[2]; 1006 struct pollfd pfd; 1007 struct epoll_event e; 1008 1009 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0); 1010 1011 efd[0] = epoll_create(1); 1012 ASSERT_GE(efd[0], 0); 1013 1014 efd[1] = epoll_create(1); 1015 ASSERT_GE(efd[1], 0); 1016 1017 e.events = EPOLLIN; 1018 ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0); 1019 1020 e.events = EPOLLIN; 1021 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0); 1022 1023 ASSERT_EQ(write(sfd[1], "w", 1), 1); 1024 1025 pfd.fd = efd[0]; 1026 pfd.events = POLLIN; 1027 EXPECT_EQ(poll(&pfd, 1, 0), 1); 1028 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1); 1029 1030 pfd.fd = efd[0]; 1031 pfd.events = POLLIN; 1032 EXPECT_EQ(poll(&pfd, 1, 0), 1); 1033 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1); 1034 1035 close(efd[0]); 1036 close(efd[1]); 1037 close(sfd[0]); 1038 close(sfd[1]); 1039} 1040 1041/* 1042 * t0 1043 * | (p) 1044 * e0 1045 * | (lt) 1046 * e1 1047 * | (et) 1048 * s0 1049 */ 1050TEST(epoll22) 1051{ 1052 int efd[2]; 1053 int sfd[2]; 1054 struct pollfd pfd; 1055 struct epoll_event e; 1056 1057 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0); 1058 1059 efd[0] = epoll_create(1); 1060 ASSERT_GE(efd[0], 0); 1061 1062 efd[1] = epoll_create(1); 1063 ASSERT_GE(efd[1], 0); 1064 1065 e.events = EPOLLIN | EPOLLET; 1066 ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0); 1067 1068 e.events = EPOLLIN; 1069 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0); 1070 1071 ASSERT_EQ(write(sfd[1], "w", 1), 1); 1072 1073 pfd.fd = efd[0]; 1074 pfd.events = POLLIN; 1075 EXPECT_EQ(poll(&pfd, 1, 0), 1); 1076 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1); 1077 1078 pfd.fd = efd[0]; 1079 pfd.events = POLLIN; 1080 EXPECT_EQ(poll(&pfd, 1, 0), 1); 1081 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1); 1082 1083 close(efd[0]); 1084 close(efd[1]); 1085 close(sfd[0]); 1086 close(sfd[1]); 1087} 1088 1089/* 1090 * t0 1091 * | (p) 1092 * e0 1093 * | (et) 1094 * e1 1095 * | (lt) 1096 * s0 1097 */ 1098TEST(epoll23) 1099{ 1100 int efd[2]; 1101 int sfd[2]; 1102 struct pollfd pfd; 1103 struct epoll_event e; 1104 1105 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0); 1106 1107 efd[0] = epoll_create(1); 1108 ASSERT_GE(efd[0], 0); 1109 1110 efd[1] = epoll_create(1); 1111 ASSERT_GE(efd[1], 0); 1112 1113 e.events = EPOLLIN; 1114 ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0); 1115 1116 e.events = EPOLLIN | EPOLLET; 1117 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0); 1118 1119 ASSERT_EQ(write(sfd[1], "w", 1), 1); 1120 1121 pfd.fd = efd[0]; 1122 pfd.events = POLLIN; 1123 EXPECT_EQ(poll(&pfd, 1, 0), 1); 1124 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1); 1125 1126 pfd.fd = efd[0]; 1127 pfd.events = POLLIN; 1128 EXPECT_EQ(poll(&pfd, 1, 0), 0); 1129 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 0); 1130 1131 close(efd[0]); 1132 close(efd[1]); 1133 close(sfd[0]); 1134 close(sfd[1]); 1135} 1136 1137/* 1138 * t0 1139 * | (p) 1140 * e0 1141 * | (et) 1142 * e1 1143 * | (et) 1144 * s0 1145 */ 1146TEST(epoll24) 1147{ 1148 int efd[2]; 1149 int sfd[2]; 1150 struct pollfd pfd; 1151 struct epoll_event e; 1152 1153 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0); 1154 1155 efd[0] = epoll_create(1); 1156 ASSERT_GE(efd[0], 0); 1157 1158 efd[1] = epoll_create(1); 1159 ASSERT_GE(efd[1], 0); 1160 1161 e.events = EPOLLIN | EPOLLET; 1162 ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0); 1163 1164 e.events = EPOLLIN | EPOLLET; 1165 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0); 1166 1167 ASSERT_EQ(write(sfd[1], "w", 1), 1); 1168 1169 pfd.fd = efd[0]; 1170 pfd.events = POLLIN; 1171 EXPECT_EQ(poll(&pfd, 1, 0), 1); 1172 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1); 1173 1174 pfd.fd = efd[0]; 1175 pfd.events = POLLIN; 1176 EXPECT_EQ(poll(&pfd, 1, 0), 0); 1177 EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 0); 1178 1179 close(efd[0]); 1180 close(efd[1]); 1181 close(sfd[0]); 1182 close(sfd[1]); 1183} 1184 1185/* 1186 * t0 t1 1187 * (ew) \ / (ew) 1188 * e0 1189 * | (lt) 1190 * e1 1191 * | (lt) 1192 * s0 1193 */ 1194TEST(epoll25) 1195{ 1196 pthread_t emitter; 1197 struct epoll_event e; 1198 struct epoll_mtcontext ctx = { 0 }; 1199 1200 signal(SIGUSR1, signal_handler); 1201 1202 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1203 1204 ctx.efd[0] = epoll_create(1); 1205 ASSERT_GE(ctx.efd[0], 0); 1206 1207 ctx.efd[1] = epoll_create(1); 1208 ASSERT_GE(ctx.efd[1], 0); 1209 1210 e.events = EPOLLIN; 1211 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1212 1213 e.events = EPOLLIN; 1214 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1215 1216 ctx.main = pthread_self(); 1217 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0); 1218 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1219 1220 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 1221 __sync_fetch_and_add(&ctx.count, 1); 1222 1223 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1224 EXPECT_EQ(ctx.count, 2); 1225 1226 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1227 pthread_kill(emitter, SIGUSR1); 1228 pthread_join(emitter, NULL); 1229 } 1230 1231 close(ctx.efd[0]); 1232 close(ctx.efd[1]); 1233 close(ctx.sfd[0]); 1234 close(ctx.sfd[1]); 1235} 1236 1237/* 1238 * t0 t1 1239 * (ew) \ / (ew) 1240 * e0 1241 * | (lt) 1242 * e1 1243 * | (et) 1244 * s0 1245 */ 1246TEST(epoll26) 1247{ 1248 pthread_t emitter; 1249 struct epoll_event e; 1250 struct epoll_mtcontext ctx = { 0 }; 1251 1252 signal(SIGUSR1, signal_handler); 1253 1254 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1255 1256 ctx.efd[0] = epoll_create(1); 1257 ASSERT_GE(ctx.efd[0], 0); 1258 1259 ctx.efd[1] = epoll_create(1); 1260 ASSERT_GE(ctx.efd[1], 0); 1261 1262 e.events = EPOLLIN | EPOLLET; 1263 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1264 1265 e.events = EPOLLIN; 1266 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1267 1268 ctx.main = pthread_self(); 1269 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0); 1270 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1271 1272 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 1273 __sync_fetch_and_add(&ctx.count, 1); 1274 1275 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1276 EXPECT_EQ(ctx.count, 2); 1277 1278 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1279 pthread_kill(emitter, SIGUSR1); 1280 pthread_join(emitter, NULL); 1281 } 1282 1283 close(ctx.efd[0]); 1284 close(ctx.efd[1]); 1285 close(ctx.sfd[0]); 1286 close(ctx.sfd[1]); 1287} 1288 1289/* 1290 * t0 t1 1291 * (ew) \ / (ew) 1292 * e0 1293 * | (et) 1294 * e1 1295 * | (lt) 1296 * s0 1297 */ 1298TEST(epoll27) 1299{ 1300 pthread_t emitter; 1301 struct epoll_event e; 1302 struct epoll_mtcontext ctx = { 0 }; 1303 1304 signal(SIGUSR1, signal_handler); 1305 1306 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1307 1308 ctx.efd[0] = epoll_create(1); 1309 ASSERT_GE(ctx.efd[0], 0); 1310 1311 ctx.efd[1] = epoll_create(1); 1312 ASSERT_GE(ctx.efd[1], 0); 1313 1314 e.events = EPOLLIN; 1315 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1316 1317 e.events = EPOLLIN | EPOLLET; 1318 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1319 1320 ctx.main = pthread_self(); 1321 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0); 1322 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1323 1324 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 1325 __sync_fetch_and_add(&ctx.count, 1); 1326 1327 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1328 EXPECT_EQ(ctx.count, 1); 1329 1330 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1331 pthread_kill(emitter, SIGUSR1); 1332 pthread_join(emitter, NULL); 1333 } 1334 1335 close(ctx.efd[0]); 1336 close(ctx.efd[1]); 1337 close(ctx.sfd[0]); 1338 close(ctx.sfd[1]); 1339} 1340 1341/* 1342 * t0 t1 1343 * (ew) \ / (ew) 1344 * e0 1345 * | (et) 1346 * e1 1347 * | (et) 1348 * s0 1349 */ 1350TEST(epoll28) 1351{ 1352 pthread_t emitter; 1353 struct epoll_event e; 1354 struct epoll_mtcontext ctx = { 0 }; 1355 1356 signal(SIGUSR1, signal_handler); 1357 1358 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1359 1360 ctx.efd[0] = epoll_create(1); 1361 ASSERT_GE(ctx.efd[0], 0); 1362 1363 ctx.efd[1] = epoll_create(1); 1364 ASSERT_GE(ctx.efd[1], 0); 1365 1366 e.events = EPOLLIN | EPOLLET; 1367 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1368 1369 e.events = EPOLLIN | EPOLLET; 1370 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1371 1372 ctx.main = pthread_self(); 1373 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0); 1374 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1375 1376 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 1377 __sync_fetch_and_add(&ctx.count, 1); 1378 1379 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1380 EXPECT_EQ(ctx.count, 1); 1381 1382 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1383 pthread_kill(emitter, SIGUSR1); 1384 pthread_join(emitter, NULL); 1385 } 1386 1387 close(ctx.efd[0]); 1388 close(ctx.efd[1]); 1389 close(ctx.sfd[0]); 1390 close(ctx.sfd[1]); 1391} 1392 1393/* 1394 * t0 t1 1395 * (ew) \ / (p) 1396 * e0 1397 * | (lt) 1398 * e1 1399 * | (lt) 1400 * s0 1401 */ 1402TEST(epoll29) 1403{ 1404 pthread_t emitter; 1405 struct epoll_event e; 1406 struct epoll_mtcontext ctx = { 0 }; 1407 1408 signal(SIGUSR1, signal_handler); 1409 1410 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1411 1412 ctx.efd[0] = epoll_create(1); 1413 ASSERT_GE(ctx.efd[0], 0); 1414 1415 ctx.efd[1] = epoll_create(1); 1416 ASSERT_GE(ctx.efd[1], 0); 1417 1418 e.events = EPOLLIN; 1419 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1420 1421 e.events = EPOLLIN; 1422 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1423 1424 ctx.main = pthread_self(); 1425 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 1426 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1427 1428 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 1429 __sync_fetch_and_add(&ctx.count, 1); 1430 1431 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1432 EXPECT_EQ(ctx.count, 2); 1433 1434 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1435 pthread_kill(emitter, SIGUSR1); 1436 pthread_join(emitter, NULL); 1437 } 1438 1439 close(ctx.efd[0]); 1440 close(ctx.sfd[0]); 1441 close(ctx.sfd[1]); 1442} 1443 1444/* 1445 * t0 t1 1446 * (ew) \ / (p) 1447 * e0 1448 * | (lt) 1449 * e1 1450 * | (et) 1451 * s0 1452 */ 1453TEST(epoll30) 1454{ 1455 pthread_t emitter; 1456 struct epoll_event e; 1457 struct epoll_mtcontext ctx = { 0 }; 1458 1459 signal(SIGUSR1, signal_handler); 1460 1461 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1462 1463 ctx.efd[0] = epoll_create(1); 1464 ASSERT_GE(ctx.efd[0], 0); 1465 1466 ctx.efd[1] = epoll_create(1); 1467 ASSERT_GE(ctx.efd[1], 0); 1468 1469 e.events = EPOLLIN | EPOLLET; 1470 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1471 1472 e.events = EPOLLIN; 1473 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1474 1475 ctx.main = pthread_self(); 1476 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 1477 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1478 1479 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 1480 __sync_fetch_and_add(&ctx.count, 1); 1481 1482 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1483 EXPECT_EQ(ctx.count, 2); 1484 1485 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1486 pthread_kill(emitter, SIGUSR1); 1487 pthread_join(emitter, NULL); 1488 } 1489 1490 close(ctx.efd[0]); 1491 close(ctx.sfd[0]); 1492 close(ctx.sfd[1]); 1493} 1494 1495/* 1496 * t0 t1 1497 * (ew) \ / (p) 1498 * e0 1499 * | (et) 1500 * e1 1501 * | (lt) 1502 * s0 1503 */ 1504TEST(epoll31) 1505{ 1506 pthread_t emitter; 1507 struct epoll_event e; 1508 struct epoll_mtcontext ctx = { 0 }; 1509 1510 signal(SIGUSR1, signal_handler); 1511 1512 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1513 1514 ctx.efd[0] = epoll_create(1); 1515 ASSERT_GE(ctx.efd[0], 0); 1516 1517 ctx.efd[1] = epoll_create(1); 1518 ASSERT_GE(ctx.efd[1], 0); 1519 1520 e.events = EPOLLIN; 1521 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1522 1523 e.events = EPOLLIN | EPOLLET; 1524 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1525 1526 ctx.main = pthread_self(); 1527 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 1528 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1529 1530 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 1531 __sync_fetch_and_add(&ctx.count, 1); 1532 1533 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1534 EXPECT_EQ(ctx.count, 1); 1535 1536 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1537 pthread_kill(emitter, SIGUSR1); 1538 pthread_join(emitter, NULL); 1539 } 1540 1541 close(ctx.efd[0]); 1542 close(ctx.sfd[0]); 1543 close(ctx.sfd[1]); 1544} 1545 1546/* 1547 * t0 t1 1548 * (ew) \ / (p) 1549 * e0 1550 * | (et) 1551 * e1 1552 * | (et) 1553 * s0 1554 */ 1555TEST(epoll32) 1556{ 1557 pthread_t emitter; 1558 struct epoll_event e; 1559 struct epoll_mtcontext ctx = { 0 }; 1560 1561 signal(SIGUSR1, signal_handler); 1562 1563 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1564 1565 ctx.efd[0] = epoll_create(1); 1566 ASSERT_GE(ctx.efd[0], 0); 1567 1568 ctx.efd[1] = epoll_create(1); 1569 ASSERT_GE(ctx.efd[1], 0); 1570 1571 e.events = EPOLLIN | EPOLLET; 1572 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1573 1574 e.events = EPOLLIN | EPOLLET; 1575 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1576 1577 ctx.main = pthread_self(); 1578 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 1579 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1580 1581 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 1582 __sync_fetch_and_add(&ctx.count, 1); 1583 1584 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1585 EXPECT_EQ(ctx.count, 1); 1586 1587 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1588 pthread_kill(emitter, SIGUSR1); 1589 pthread_join(emitter, NULL); 1590 } 1591 1592 close(ctx.efd[0]); 1593 close(ctx.sfd[0]); 1594 close(ctx.sfd[1]); 1595} 1596 1597/* 1598 * t0 t1 1599 * (ew) | | (ew) 1600 * | e0 1601 * \ / (lt) 1602 * e1 1603 * | (lt) 1604 * s0 1605 */ 1606TEST(epoll33) 1607{ 1608 pthread_t emitter; 1609 struct epoll_event e; 1610 struct epoll_mtcontext ctx = { 0 }; 1611 1612 signal(SIGUSR1, signal_handler); 1613 1614 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1615 1616 ctx.efd[0] = epoll_create(1); 1617 ASSERT_GE(ctx.efd[0], 0); 1618 1619 ctx.efd[1] = epoll_create(1); 1620 ASSERT_GE(ctx.efd[1], 0); 1621 1622 e.events = EPOLLIN; 1623 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1624 1625 e.events = EPOLLIN; 1626 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1627 1628 ctx.main = pthread_self(); 1629 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0); 1630 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1631 1632 if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0) 1633 __sync_fetch_and_add(&ctx.count, 1); 1634 1635 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1636 EXPECT_EQ(ctx.count, 2); 1637 1638 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1639 pthread_kill(emitter, SIGUSR1); 1640 pthread_join(emitter, NULL); 1641 } 1642 1643 close(ctx.efd[0]); 1644 close(ctx.efd[1]); 1645 close(ctx.sfd[0]); 1646 close(ctx.sfd[1]); 1647} 1648 1649/* 1650 * t0 t1 1651 * (ew) | | (ew) 1652 * | e0 1653 * \ / (lt) 1654 * e1 1655 * | (et) 1656 * s0 1657 */ 1658TEST(epoll34) 1659{ 1660 pthread_t emitter; 1661 struct epoll_event e; 1662 struct epoll_mtcontext ctx = { 0 }; 1663 1664 signal(SIGUSR1, signal_handler); 1665 1666 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1667 1668 ctx.efd[0] = epoll_create(1); 1669 ASSERT_GE(ctx.efd[0], 0); 1670 1671 ctx.efd[1] = epoll_create(1); 1672 ASSERT_GE(ctx.efd[1], 0); 1673 1674 e.events = EPOLLIN | EPOLLET; 1675 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1676 1677 e.events = EPOLLIN; 1678 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1679 1680 ctx.main = pthread_self(); 1681 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1o, &ctx), 0); 1682 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1683 1684 if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0) 1685 __sync_fetch_and_or(&ctx.count, 2); 1686 1687 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1688 EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3)); 1689 1690 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1691 pthread_kill(emitter, SIGUSR1); 1692 pthread_join(emitter, NULL); 1693 } 1694 1695 close(ctx.efd[0]); 1696 close(ctx.efd[1]); 1697 close(ctx.sfd[0]); 1698 close(ctx.sfd[1]); 1699} 1700 1701/* 1702 * t0 t1 1703 * (ew) | | (ew) 1704 * | e0 1705 * \ / (et) 1706 * e1 1707 * | (lt) 1708 * s0 1709 */ 1710TEST(epoll35) 1711{ 1712 pthread_t emitter; 1713 struct epoll_event e; 1714 struct epoll_mtcontext ctx = { 0 }; 1715 1716 signal(SIGUSR1, signal_handler); 1717 1718 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1719 1720 ctx.efd[0] = epoll_create(1); 1721 ASSERT_GE(ctx.efd[0], 0); 1722 1723 ctx.efd[1] = epoll_create(1); 1724 ASSERT_GE(ctx.efd[1], 0); 1725 1726 e.events = EPOLLIN; 1727 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1728 1729 e.events = EPOLLIN | EPOLLET; 1730 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1731 1732 ctx.main = pthread_self(); 1733 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0); 1734 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1735 1736 if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0) 1737 __sync_fetch_and_add(&ctx.count, 1); 1738 1739 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1740 EXPECT_EQ(ctx.count, 2); 1741 1742 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1743 pthread_kill(emitter, SIGUSR1); 1744 pthread_join(emitter, NULL); 1745 } 1746 1747 close(ctx.efd[0]); 1748 close(ctx.efd[1]); 1749 close(ctx.sfd[0]); 1750 close(ctx.sfd[1]); 1751} 1752 1753/* 1754 * t0 t1 1755 * (ew) | | (ew) 1756 * | e0 1757 * \ / (et) 1758 * e1 1759 * | (et) 1760 * s0 1761 */ 1762TEST(epoll36) 1763{ 1764 pthread_t emitter; 1765 struct epoll_event e; 1766 struct epoll_mtcontext ctx = { 0 }; 1767 1768 signal(SIGUSR1, signal_handler); 1769 1770 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1771 1772 ctx.efd[0] = epoll_create(1); 1773 ASSERT_GE(ctx.efd[0], 0); 1774 1775 ctx.efd[1] = epoll_create(1); 1776 ASSERT_GE(ctx.efd[1], 0); 1777 1778 e.events = EPOLLIN | EPOLLET; 1779 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1780 1781 e.events = EPOLLIN | EPOLLET; 1782 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1783 1784 ctx.main = pthread_self(); 1785 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1o, &ctx), 0); 1786 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1787 1788 if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0) 1789 __sync_fetch_and_or(&ctx.count, 2); 1790 1791 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1792 EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3)); 1793 1794 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1795 pthread_kill(emitter, SIGUSR1); 1796 pthread_join(emitter, NULL); 1797 } 1798 1799 close(ctx.efd[0]); 1800 close(ctx.efd[1]); 1801 close(ctx.sfd[0]); 1802 close(ctx.sfd[1]); 1803} 1804 1805/* 1806 * t0 t1 1807 * (p) | | (ew) 1808 * | e0 1809 * \ / (lt) 1810 * e1 1811 * | (lt) 1812 * s0 1813 */ 1814TEST(epoll37) 1815{ 1816 pthread_t emitter; 1817 struct pollfd pfd; 1818 struct epoll_event e; 1819 struct epoll_mtcontext ctx = { 0 }; 1820 1821 signal(SIGUSR1, signal_handler); 1822 1823 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1824 1825 ctx.efd[0] = epoll_create(1); 1826 ASSERT_GE(ctx.efd[0], 0); 1827 1828 ctx.efd[1] = epoll_create(1); 1829 ASSERT_GE(ctx.efd[1], 0); 1830 1831 e.events = EPOLLIN; 1832 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1833 1834 e.events = EPOLLIN; 1835 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1836 1837 ctx.main = pthread_self(); 1838 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0); 1839 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1840 1841 pfd.fd = ctx.efd[1]; 1842 pfd.events = POLLIN; 1843 if (poll(&pfd, 1, -1) > 0) { 1844 if (epoll_wait(ctx.efd[1], &e, 1, 0) > 0) 1845 __sync_fetch_and_add(&ctx.count, 1); 1846 } 1847 1848 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1849 EXPECT_EQ(ctx.count, 2); 1850 1851 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1852 pthread_kill(emitter, SIGUSR1); 1853 pthread_join(emitter, NULL); 1854 } 1855 1856 close(ctx.efd[0]); 1857 close(ctx.efd[1]); 1858 close(ctx.sfd[0]); 1859 close(ctx.sfd[1]); 1860} 1861 1862/* 1863 * t0 t1 1864 * (p) | | (ew) 1865 * | e0 1866 * \ / (lt) 1867 * e1 1868 * | (et) 1869 * s0 1870 */ 1871TEST(epoll38) 1872{ 1873 pthread_t emitter; 1874 struct pollfd pfd; 1875 struct epoll_event e; 1876 struct epoll_mtcontext ctx = { 0 }; 1877 1878 signal(SIGUSR1, signal_handler); 1879 1880 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1881 1882 ctx.efd[0] = epoll_create(1); 1883 ASSERT_GE(ctx.efd[0], 0); 1884 1885 ctx.efd[1] = epoll_create(1); 1886 ASSERT_GE(ctx.efd[1], 0); 1887 1888 e.events = EPOLLIN | EPOLLET; 1889 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1890 1891 e.events = EPOLLIN; 1892 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1893 1894 ctx.main = pthread_self(); 1895 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1o, &ctx), 0); 1896 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1897 1898 pfd.fd = ctx.efd[1]; 1899 pfd.events = POLLIN; 1900 if (poll(&pfd, 1, -1) > 0) { 1901 if (epoll_wait(ctx.efd[1], &e, 1, 0) > 0) 1902 __sync_fetch_and_or(&ctx.count, 2); 1903 } 1904 1905 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1906 EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3)); 1907 1908 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1909 pthread_kill(emitter, SIGUSR1); 1910 pthread_join(emitter, NULL); 1911 } 1912 1913 close(ctx.efd[0]); 1914 close(ctx.efd[1]); 1915 close(ctx.sfd[0]); 1916 close(ctx.sfd[1]); 1917} 1918 1919/* 1920 * t0 t1 1921 * (p) | | (ew) 1922 * | e0 1923 * \ / (et) 1924 * e1 1925 * | (lt) 1926 * s0 1927 */ 1928TEST(epoll39) 1929{ 1930 pthread_t emitter; 1931 struct pollfd pfd; 1932 struct epoll_event e; 1933 struct epoll_mtcontext ctx = { 0 }; 1934 1935 signal(SIGUSR1, signal_handler); 1936 1937 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1938 1939 ctx.efd[0] = epoll_create(1); 1940 ASSERT_GE(ctx.efd[0], 0); 1941 1942 ctx.efd[1] = epoll_create(1); 1943 ASSERT_GE(ctx.efd[1], 0); 1944 1945 e.events = EPOLLIN; 1946 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 1947 1948 e.events = EPOLLIN | EPOLLET; 1949 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 1950 1951 ctx.main = pthread_self(); 1952 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0); 1953 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 1954 1955 pfd.fd = ctx.efd[1]; 1956 pfd.events = POLLIN; 1957 if (poll(&pfd, 1, -1) > 0) { 1958 if (epoll_wait(ctx.efd[1], &e, 1, 0) > 0) 1959 __sync_fetch_and_add(&ctx.count, 1); 1960 } 1961 1962 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 1963 EXPECT_EQ(ctx.count, 2); 1964 1965 if (pthread_tryjoin_np(emitter, NULL) < 0) { 1966 pthread_kill(emitter, SIGUSR1); 1967 pthread_join(emitter, NULL); 1968 } 1969 1970 close(ctx.efd[0]); 1971 close(ctx.efd[1]); 1972 close(ctx.sfd[0]); 1973 close(ctx.sfd[1]); 1974} 1975 1976/* 1977 * t0 t1 1978 * (p) | | (ew) 1979 * | e0 1980 * \ / (et) 1981 * e1 1982 * | (et) 1983 * s0 1984 */ 1985TEST(epoll40) 1986{ 1987 pthread_t emitter; 1988 struct pollfd pfd; 1989 struct epoll_event e; 1990 struct epoll_mtcontext ctx = { 0 }; 1991 1992 signal(SIGUSR1, signal_handler); 1993 1994 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 1995 1996 ctx.efd[0] = epoll_create(1); 1997 ASSERT_GE(ctx.efd[0], 0); 1998 1999 ctx.efd[1] = epoll_create(1); 2000 ASSERT_GE(ctx.efd[1], 0); 2001 2002 e.events = EPOLLIN | EPOLLET; 2003 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2004 2005 e.events = EPOLLIN | EPOLLET; 2006 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2007 2008 ctx.main = pthread_self(); 2009 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1o, &ctx), 0); 2010 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 2011 2012 pfd.fd = ctx.efd[1]; 2013 pfd.events = POLLIN; 2014 if (poll(&pfd, 1, -1) > 0) { 2015 if (epoll_wait(ctx.efd[1], &e, 1, 0) > 0) 2016 __sync_fetch_and_or(&ctx.count, 2); 2017 } 2018 2019 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 2020 EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3)); 2021 2022 if (pthread_tryjoin_np(emitter, NULL) < 0) { 2023 pthread_kill(emitter, SIGUSR1); 2024 pthread_join(emitter, NULL); 2025 } 2026 2027 close(ctx.efd[0]); 2028 close(ctx.efd[1]); 2029 close(ctx.sfd[0]); 2030 close(ctx.sfd[1]); 2031} 2032 2033/* 2034 * t0 t1 2035 * (ew) | | (p) 2036 * | e0 2037 * \ / (lt) 2038 * e1 2039 * | (lt) 2040 * s0 2041 */ 2042TEST(epoll41) 2043{ 2044 pthread_t emitter; 2045 struct epoll_event e; 2046 struct epoll_mtcontext ctx = { 0 }; 2047 2048 signal(SIGUSR1, signal_handler); 2049 2050 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 2051 2052 ctx.efd[0] = epoll_create(1); 2053 ASSERT_GE(ctx.efd[0], 0); 2054 2055 ctx.efd[1] = epoll_create(1); 2056 ASSERT_GE(ctx.efd[1], 0); 2057 2058 e.events = EPOLLIN; 2059 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2060 2061 e.events = EPOLLIN; 2062 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2063 2064 ctx.main = pthread_self(); 2065 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 2066 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 2067 2068 if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0) 2069 __sync_fetch_and_add(&ctx.count, 1); 2070 2071 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 2072 EXPECT_EQ(ctx.count, 2); 2073 2074 if (pthread_tryjoin_np(emitter, NULL) < 0) { 2075 pthread_kill(emitter, SIGUSR1); 2076 pthread_join(emitter, NULL); 2077 } 2078 2079 close(ctx.efd[0]); 2080 close(ctx.efd[1]); 2081 close(ctx.sfd[0]); 2082 close(ctx.sfd[1]); 2083} 2084 2085/* 2086 * t0 t1 2087 * (ew) | | (p) 2088 * | e0 2089 * \ / (lt) 2090 * e1 2091 * | (et) 2092 * s0 2093 */ 2094TEST(epoll42) 2095{ 2096 pthread_t emitter; 2097 struct epoll_event e; 2098 struct epoll_mtcontext ctx = { 0 }; 2099 2100 signal(SIGUSR1, signal_handler); 2101 2102 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 2103 2104 ctx.efd[0] = epoll_create(1); 2105 ASSERT_GE(ctx.efd[0], 0); 2106 2107 ctx.efd[1] = epoll_create(1); 2108 ASSERT_GE(ctx.efd[1], 0); 2109 2110 e.events = EPOLLIN | EPOLLET; 2111 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2112 2113 e.events = EPOLLIN; 2114 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2115 2116 ctx.main = pthread_self(); 2117 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1op, &ctx), 0); 2118 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 2119 2120 if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0) 2121 __sync_fetch_and_or(&ctx.count, 2); 2122 2123 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 2124 EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3)); 2125 2126 if (pthread_tryjoin_np(emitter, NULL) < 0) { 2127 pthread_kill(emitter, SIGUSR1); 2128 pthread_join(emitter, NULL); 2129 } 2130 2131 close(ctx.efd[0]); 2132 close(ctx.efd[1]); 2133 close(ctx.sfd[0]); 2134 close(ctx.sfd[1]); 2135} 2136 2137/* 2138 * t0 t1 2139 * (ew) | | (p) 2140 * | e0 2141 * \ / (et) 2142 * e1 2143 * | (lt) 2144 * s0 2145 */ 2146TEST(epoll43) 2147{ 2148 pthread_t emitter; 2149 struct epoll_event e; 2150 struct epoll_mtcontext ctx = { 0 }; 2151 2152 signal(SIGUSR1, signal_handler); 2153 2154 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 2155 2156 ctx.efd[0] = epoll_create(1); 2157 ASSERT_GE(ctx.efd[0], 0); 2158 2159 ctx.efd[1] = epoll_create(1); 2160 ASSERT_GE(ctx.efd[1], 0); 2161 2162 e.events = EPOLLIN; 2163 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2164 2165 e.events = EPOLLIN | EPOLLET; 2166 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2167 2168 ctx.main = pthread_self(); 2169 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 2170 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 2171 2172 if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0) 2173 __sync_fetch_and_add(&ctx.count, 1); 2174 2175 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 2176 EXPECT_EQ(ctx.count, 2); 2177 2178 if (pthread_tryjoin_np(emitter, NULL) < 0) { 2179 pthread_kill(emitter, SIGUSR1); 2180 pthread_join(emitter, NULL); 2181 } 2182 2183 close(ctx.efd[0]); 2184 close(ctx.efd[1]); 2185 close(ctx.sfd[0]); 2186 close(ctx.sfd[1]); 2187} 2188 2189/* 2190 * t0 t1 2191 * (ew) | | (p) 2192 * | e0 2193 * \ / (et) 2194 * e1 2195 * | (et) 2196 * s0 2197 */ 2198TEST(epoll44) 2199{ 2200 pthread_t emitter; 2201 struct epoll_event e; 2202 struct epoll_mtcontext ctx = { 0 }; 2203 2204 signal(SIGUSR1, signal_handler); 2205 2206 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 2207 2208 ctx.efd[0] = epoll_create(1); 2209 ASSERT_GE(ctx.efd[0], 0); 2210 2211 ctx.efd[1] = epoll_create(1); 2212 ASSERT_GE(ctx.efd[1], 0); 2213 2214 e.events = EPOLLIN | EPOLLET; 2215 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2216 2217 e.events = EPOLLIN | EPOLLET; 2218 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2219 2220 ctx.main = pthread_self(); 2221 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1op, &ctx), 0); 2222 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 2223 2224 if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0) 2225 __sync_fetch_and_or(&ctx.count, 2); 2226 2227 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 2228 EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3)); 2229 2230 if (pthread_tryjoin_np(emitter, NULL) < 0) { 2231 pthread_kill(emitter, SIGUSR1); 2232 pthread_join(emitter, NULL); 2233 } 2234 2235 close(ctx.efd[0]); 2236 close(ctx.efd[1]); 2237 close(ctx.sfd[0]); 2238 close(ctx.sfd[1]); 2239} 2240 2241/* 2242 * t0 t1 2243 * (p) | | (p) 2244 * | e0 2245 * \ / (lt) 2246 * e1 2247 * | (lt) 2248 * s0 2249 */ 2250TEST(epoll45) 2251{ 2252 pthread_t emitter; 2253 struct pollfd pfd; 2254 struct epoll_event e; 2255 struct epoll_mtcontext ctx = { 0 }; 2256 2257 signal(SIGUSR1, signal_handler); 2258 2259 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 2260 2261 ctx.efd[0] = epoll_create(1); 2262 ASSERT_GE(ctx.efd[0], 0); 2263 2264 ctx.efd[1] = epoll_create(1); 2265 ASSERT_GE(ctx.efd[1], 0); 2266 2267 e.events = EPOLLIN; 2268 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2269 2270 e.events = EPOLLIN; 2271 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2272 2273 ctx.main = pthread_self(); 2274 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 2275 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 2276 2277 pfd.fd = ctx.efd[1]; 2278 pfd.events = POLLIN; 2279 if (poll(&pfd, 1, -1) > 0) { 2280 if (epoll_wait(ctx.efd[1], &e, 1, 0) > 0) 2281 __sync_fetch_and_add(&ctx.count, 1); 2282 } 2283 2284 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 2285 EXPECT_EQ(ctx.count, 2); 2286 2287 if (pthread_tryjoin_np(emitter, NULL) < 0) { 2288 pthread_kill(emitter, SIGUSR1); 2289 pthread_join(emitter, NULL); 2290 } 2291 2292 close(ctx.efd[0]); 2293 close(ctx.efd[1]); 2294 close(ctx.sfd[0]); 2295 close(ctx.sfd[1]); 2296} 2297 2298/* 2299 * t0 t1 2300 * (p) | | (p) 2301 * | e0 2302 * \ / (lt) 2303 * e1 2304 * | (et) 2305 * s0 2306 */ 2307TEST(epoll46) 2308{ 2309 pthread_t emitter; 2310 struct epoll_event e; 2311 struct epoll_mtcontext ctx = { 0 }; 2312 2313 signal(SIGUSR1, signal_handler); 2314 2315 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 2316 2317 ctx.efd[0] = epoll_create(1); 2318 ASSERT_GE(ctx.efd[0], 0); 2319 2320 ctx.efd[1] = epoll_create(1); 2321 ASSERT_GE(ctx.efd[1], 0); 2322 2323 e.events = EPOLLIN | EPOLLET; 2324 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2325 2326 e.events = EPOLLIN; 2327 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2328 2329 ctx.main = pthread_self(); 2330 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1op, &ctx), 0); 2331 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 2332 2333 if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0) 2334 __sync_fetch_and_or(&ctx.count, 2); 2335 2336 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 2337 EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3)); 2338 2339 if (pthread_tryjoin_np(emitter, NULL) < 0) { 2340 pthread_kill(emitter, SIGUSR1); 2341 pthread_join(emitter, NULL); 2342 } 2343 2344 close(ctx.efd[0]); 2345 close(ctx.efd[1]); 2346 close(ctx.sfd[0]); 2347 close(ctx.sfd[1]); 2348} 2349 2350/* 2351 * t0 t1 2352 * (p) | | (p) 2353 * | e0 2354 * \ / (et) 2355 * e1 2356 * | (lt) 2357 * s0 2358 */ 2359TEST(epoll47) 2360{ 2361 pthread_t emitter; 2362 struct pollfd pfd; 2363 struct epoll_event e; 2364 struct epoll_mtcontext ctx = { 0 }; 2365 2366 signal(SIGUSR1, signal_handler); 2367 2368 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 2369 2370 ctx.efd[0] = epoll_create(1); 2371 ASSERT_GE(ctx.efd[0], 0); 2372 2373 ctx.efd[1] = epoll_create(1); 2374 ASSERT_GE(ctx.efd[1], 0); 2375 2376 e.events = EPOLLIN; 2377 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2378 2379 e.events = EPOLLIN | EPOLLET; 2380 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2381 2382 ctx.main = pthread_self(); 2383 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 2384 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 2385 2386 pfd.fd = ctx.efd[1]; 2387 pfd.events = POLLIN; 2388 if (poll(&pfd, 1, -1) > 0) { 2389 if (epoll_wait(ctx.efd[1], &e, 1, 0) > 0) 2390 __sync_fetch_and_add(&ctx.count, 1); 2391 } 2392 2393 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 2394 EXPECT_EQ(ctx.count, 2); 2395 2396 if (pthread_tryjoin_np(emitter, NULL) < 0) { 2397 pthread_kill(emitter, SIGUSR1); 2398 pthread_join(emitter, NULL); 2399 } 2400 2401 close(ctx.efd[0]); 2402 close(ctx.efd[1]); 2403 close(ctx.sfd[0]); 2404 close(ctx.sfd[1]); 2405} 2406 2407/* 2408 * t0 t1 2409 * (p) | | (p) 2410 * | e0 2411 * \ / (et) 2412 * e1 2413 * | (et) 2414 * s0 2415 */ 2416TEST(epoll48) 2417{ 2418 pthread_t emitter; 2419 struct epoll_event e; 2420 struct epoll_mtcontext ctx = { 0 }; 2421 2422 signal(SIGUSR1, signal_handler); 2423 2424 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 2425 2426 ctx.efd[0] = epoll_create(1); 2427 ASSERT_GE(ctx.efd[0], 0); 2428 2429 ctx.efd[1] = epoll_create(1); 2430 ASSERT_GE(ctx.efd[1], 0); 2431 2432 e.events = EPOLLIN | EPOLLET; 2433 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2434 2435 e.events = EPOLLIN | EPOLLET; 2436 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2437 2438 ctx.main = pthread_self(); 2439 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1op, &ctx), 0); 2440 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0); 2441 2442 if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0) 2443 __sync_fetch_and_or(&ctx.count, 2); 2444 2445 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 2446 EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3)); 2447 2448 if (pthread_tryjoin_np(emitter, NULL) < 0) { 2449 pthread_kill(emitter, SIGUSR1); 2450 pthread_join(emitter, NULL); 2451 } 2452 2453 close(ctx.efd[0]); 2454 close(ctx.efd[1]); 2455 close(ctx.sfd[0]); 2456 close(ctx.sfd[1]); 2457} 2458 2459/* 2460 * t0 2461 * | (ew) 2462 * e0 2463 * (lt) / \ (lt) 2464 * e1 e2 2465 * (lt) | | (lt) 2466 * s0 s2 2467 */ 2468TEST(epoll49) 2469{ 2470 int efd[3]; 2471 int sfd[4]; 2472 struct epoll_event events[2]; 2473 2474 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0); 2475 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0); 2476 2477 efd[0] = epoll_create(1); 2478 ASSERT_GE(efd[0], 0); 2479 2480 efd[1] = epoll_create(1); 2481 ASSERT_GE(efd[1], 0); 2482 2483 efd[2] = epoll_create(1); 2484 ASSERT_GE(efd[2], 0); 2485 2486 events[0].events = EPOLLIN; 2487 ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], events), 0); 2488 2489 events[0].events = EPOLLIN; 2490 ASSERT_EQ(epoll_ctl(efd[2], EPOLL_CTL_ADD, sfd[2], events), 0); 2491 2492 events[0].events = EPOLLIN; 2493 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], events), 0); 2494 2495 events[0].events = EPOLLIN; 2496 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[2], events), 0); 2497 2498 ASSERT_EQ(write(sfd[1], "w", 1), 1); 2499 ASSERT_EQ(write(sfd[3], "w", 1), 1); 2500 2501 EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 2); 2502 EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 2); 2503 2504 close(efd[0]); 2505 close(efd[1]); 2506 close(efd[2]); 2507 close(sfd[0]); 2508 close(sfd[1]); 2509 close(sfd[2]); 2510 close(sfd[3]); 2511} 2512 2513/* 2514 * t0 2515 * | (ew) 2516 * e0 2517 * (et) / \ (et) 2518 * e1 e2 2519 * (lt) | | (lt) 2520 * s0 s2 2521 */ 2522TEST(epoll50) 2523{ 2524 int efd[3]; 2525 int sfd[4]; 2526 struct epoll_event events[2]; 2527 2528 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0); 2529 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0); 2530 2531 efd[0] = epoll_create(1); 2532 ASSERT_GE(efd[0], 0); 2533 2534 efd[1] = epoll_create(1); 2535 ASSERT_GE(efd[1], 0); 2536 2537 efd[2] = epoll_create(1); 2538 ASSERT_GE(efd[2], 0); 2539 2540 events[0].events = EPOLLIN; 2541 ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], events), 0); 2542 2543 events[0].events = EPOLLIN; 2544 ASSERT_EQ(epoll_ctl(efd[2], EPOLL_CTL_ADD, sfd[2], events), 0); 2545 2546 events[0].events = EPOLLIN | EPOLLET; 2547 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], events), 0); 2548 2549 events[0].events = EPOLLIN | EPOLLET; 2550 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[2], events), 0); 2551 2552 ASSERT_EQ(write(sfd[1], "w", 1), 1); 2553 ASSERT_EQ(write(sfd[3], "w", 1), 1); 2554 2555 EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 2); 2556 EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 0); 2557 2558 close(efd[0]); 2559 close(efd[1]); 2560 close(efd[2]); 2561 close(sfd[0]); 2562 close(sfd[1]); 2563 close(sfd[2]); 2564 close(sfd[3]); 2565} 2566 2567/* 2568 * t0 2569 * | (p) 2570 * e0 2571 * (lt) / \ (lt) 2572 * e1 e2 2573 * (lt) | | (lt) 2574 * s0 s2 2575 */ 2576TEST(epoll51) 2577{ 2578 int efd[3]; 2579 int sfd[4]; 2580 struct pollfd pfd; 2581 struct epoll_event events[2]; 2582 2583 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0); 2584 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0); 2585 2586 efd[0] = epoll_create(1); 2587 ASSERT_GE(efd[0], 0); 2588 2589 efd[1] = epoll_create(1); 2590 ASSERT_GE(efd[1], 0); 2591 2592 efd[2] = epoll_create(1); 2593 ASSERT_GE(efd[2], 0); 2594 2595 events[0].events = EPOLLIN; 2596 ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], events), 0); 2597 2598 events[0].events = EPOLLIN; 2599 ASSERT_EQ(epoll_ctl(efd[2], EPOLL_CTL_ADD, sfd[2], events), 0); 2600 2601 events[0].events = EPOLLIN; 2602 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], events), 0); 2603 2604 events[0].events = EPOLLIN; 2605 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[2], events), 0); 2606 2607 ASSERT_EQ(write(sfd[1], "w", 1), 1); 2608 ASSERT_EQ(write(sfd[3], "w", 1), 1); 2609 2610 pfd.fd = efd[0]; 2611 pfd.events = POLLIN; 2612 EXPECT_EQ(poll(&pfd, 1, 0), 1); 2613 EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 2); 2614 2615 pfd.fd = efd[0]; 2616 pfd.events = POLLIN; 2617 EXPECT_EQ(poll(&pfd, 1, 0), 1); 2618 EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 2); 2619 2620 close(efd[0]); 2621 close(efd[1]); 2622 close(efd[2]); 2623 close(sfd[0]); 2624 close(sfd[1]); 2625 close(sfd[2]); 2626 close(sfd[3]); 2627} 2628 2629/* 2630 * t0 2631 * | (p) 2632 * e0 2633 * (et) / \ (et) 2634 * e1 e2 2635 * (lt) | | (lt) 2636 * s0 s2 2637 */ 2638TEST(epoll52) 2639{ 2640 int efd[3]; 2641 int sfd[4]; 2642 struct pollfd pfd; 2643 struct epoll_event events[2]; 2644 2645 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0); 2646 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0); 2647 2648 efd[0] = epoll_create(1); 2649 ASSERT_GE(efd[0], 0); 2650 2651 efd[1] = epoll_create(1); 2652 ASSERT_GE(efd[1], 0); 2653 2654 efd[2] = epoll_create(1); 2655 ASSERT_GE(efd[2], 0); 2656 2657 events[0].events = EPOLLIN; 2658 ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], events), 0); 2659 2660 events[0].events = EPOLLIN; 2661 ASSERT_EQ(epoll_ctl(efd[2], EPOLL_CTL_ADD, sfd[2], events), 0); 2662 2663 events[0].events = EPOLLIN | EPOLLET; 2664 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], events), 0); 2665 2666 events[0].events = EPOLLIN | EPOLLET; 2667 ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[2], events), 0); 2668 2669 ASSERT_EQ(write(sfd[1], "w", 1), 1); 2670 ASSERT_EQ(write(sfd[3], "w", 1), 1); 2671 2672 pfd.fd = efd[0]; 2673 pfd.events = POLLIN; 2674 EXPECT_EQ(poll(&pfd, 1, 0), 1); 2675 EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 2); 2676 2677 pfd.fd = efd[0]; 2678 pfd.events = POLLIN; 2679 EXPECT_EQ(poll(&pfd, 1, 0), 0); 2680 EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 0); 2681 2682 close(efd[0]); 2683 close(efd[1]); 2684 close(efd[2]); 2685 close(sfd[0]); 2686 close(sfd[1]); 2687 close(sfd[2]); 2688 close(sfd[3]); 2689} 2690 2691/* 2692 * t0 t1 2693 * (ew) \ / (ew) 2694 * e0 2695 * (lt) / \ (lt) 2696 * e1 e2 2697 * (lt) | | (lt) 2698 * s0 s2 2699 */ 2700TEST(epoll53) 2701{ 2702 pthread_t emitter; 2703 struct epoll_event e; 2704 struct epoll_mtcontext ctx = { 0 }; 2705 2706 signal(SIGUSR1, signal_handler); 2707 2708 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0); 2709 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0); 2710 2711 ctx.efd[0] = epoll_create(1); 2712 ASSERT_GE(ctx.efd[0], 0); 2713 2714 ctx.efd[1] = epoll_create(1); 2715 ASSERT_GE(ctx.efd[1], 0); 2716 2717 ctx.efd[2] = epoll_create(1); 2718 ASSERT_GE(ctx.efd[2], 0); 2719 2720 e.events = EPOLLIN; 2721 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2722 2723 e.events = EPOLLIN; 2724 ASSERT_EQ(epoll_ctl(ctx.efd[2], EPOLL_CTL_ADD, ctx.sfd[2], &e), 0); 2725 2726 e.events = EPOLLIN; 2727 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2728 2729 e.events = EPOLLIN; 2730 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[2], &e), 0); 2731 2732 ctx.main = pthread_self(); 2733 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0); 2734 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0); 2735 2736 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 2737 __sync_fetch_and_add(&ctx.count, 1); 2738 2739 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 2740 EXPECT_EQ(ctx.count, 2); 2741 2742 if (pthread_tryjoin_np(emitter, NULL) < 0) { 2743 pthread_kill(emitter, SIGUSR1); 2744 pthread_join(emitter, NULL); 2745 } 2746 2747 close(ctx.efd[0]); 2748 close(ctx.efd[1]); 2749 close(ctx.efd[2]); 2750 close(ctx.sfd[0]); 2751 close(ctx.sfd[1]); 2752 close(ctx.sfd[2]); 2753 close(ctx.sfd[3]); 2754} 2755 2756/* 2757 * t0 t1 2758 * (ew) \ / (ew) 2759 * e0 2760 * (et) / \ (et) 2761 * e1 e2 2762 * (lt) | | (lt) 2763 * s0 s2 2764 */ 2765TEST(epoll54) 2766{ 2767 pthread_t emitter; 2768 struct epoll_event e; 2769 struct epoll_mtcontext ctx = { 0 }; 2770 2771 signal(SIGUSR1, signal_handler); 2772 2773 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0); 2774 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0); 2775 2776 ctx.efd[0] = epoll_create(1); 2777 ASSERT_GE(ctx.efd[0], 0); 2778 2779 ctx.efd[1] = epoll_create(1); 2780 ASSERT_GE(ctx.efd[1], 0); 2781 2782 ctx.efd[2] = epoll_create(1); 2783 ASSERT_GE(ctx.efd[2], 0); 2784 2785 e.events = EPOLLIN; 2786 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2787 2788 e.events = EPOLLIN; 2789 ASSERT_EQ(epoll_ctl(ctx.efd[2], EPOLL_CTL_ADD, ctx.sfd[2], &e), 0); 2790 2791 e.events = EPOLLIN | EPOLLET; 2792 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2793 2794 e.events = EPOLLIN | EPOLLET; 2795 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[2], &e), 0); 2796 2797 ctx.main = pthread_self(); 2798 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0); 2799 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0); 2800 2801 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 2802 __sync_fetch_and_add(&ctx.count, 1); 2803 2804 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 2805 EXPECT_EQ(ctx.count, 2); 2806 2807 if (pthread_tryjoin_np(emitter, NULL) < 0) { 2808 pthread_kill(emitter, SIGUSR1); 2809 pthread_join(emitter, NULL); 2810 } 2811 2812 close(ctx.efd[0]); 2813 close(ctx.efd[1]); 2814 close(ctx.efd[2]); 2815 close(ctx.sfd[0]); 2816 close(ctx.sfd[1]); 2817 close(ctx.sfd[2]); 2818 close(ctx.sfd[3]); 2819} 2820 2821/* 2822 * t0 t1 2823 * (ew) \ / (p) 2824 * e0 2825 * (lt) / \ (lt) 2826 * e1 e2 2827 * (lt) | | (lt) 2828 * s0 s2 2829 */ 2830TEST(epoll55) 2831{ 2832 pthread_t emitter; 2833 struct epoll_event e; 2834 struct epoll_mtcontext ctx = { 0 }; 2835 2836 signal(SIGUSR1, signal_handler); 2837 2838 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0); 2839 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0); 2840 2841 ctx.efd[0] = epoll_create(1); 2842 ASSERT_GE(ctx.efd[0], 0); 2843 2844 ctx.efd[1] = epoll_create(1); 2845 ASSERT_GE(ctx.efd[1], 0); 2846 2847 ctx.efd[2] = epoll_create(1); 2848 ASSERT_GE(ctx.efd[2], 0); 2849 2850 e.events = EPOLLIN; 2851 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2852 2853 e.events = EPOLLIN; 2854 ASSERT_EQ(epoll_ctl(ctx.efd[2], EPOLL_CTL_ADD, ctx.sfd[2], &e), 0); 2855 2856 e.events = EPOLLIN; 2857 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2858 2859 e.events = EPOLLIN; 2860 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[2], &e), 0); 2861 2862 ctx.main = pthread_self(); 2863 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 2864 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0); 2865 2866 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 2867 __sync_fetch_and_add(&ctx.count, 1); 2868 2869 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 2870 EXPECT_EQ(ctx.count, 2); 2871 2872 if (pthread_tryjoin_np(emitter, NULL) < 0) { 2873 pthread_kill(emitter, SIGUSR1); 2874 pthread_join(emitter, NULL); 2875 } 2876 2877 close(ctx.efd[0]); 2878 close(ctx.efd[1]); 2879 close(ctx.efd[2]); 2880 close(ctx.sfd[0]); 2881 close(ctx.sfd[1]); 2882 close(ctx.sfd[2]); 2883 close(ctx.sfd[3]); 2884} 2885 2886/* 2887 * t0 t1 2888 * (ew) \ / (p) 2889 * e0 2890 * (et) / \ (et) 2891 * e1 e2 2892 * (lt) | | (lt) 2893 * s0 s2 2894 */ 2895TEST(epoll56) 2896{ 2897 pthread_t emitter; 2898 struct epoll_event e; 2899 struct epoll_mtcontext ctx = { 0 }; 2900 2901 signal(SIGUSR1, signal_handler); 2902 2903 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0); 2904 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0); 2905 2906 ctx.efd[0] = epoll_create(1); 2907 ASSERT_GE(ctx.efd[0], 0); 2908 2909 ctx.efd[1] = epoll_create(1); 2910 ASSERT_GE(ctx.efd[1], 0); 2911 2912 ctx.efd[2] = epoll_create(1); 2913 ASSERT_GE(ctx.efd[2], 0); 2914 2915 e.events = EPOLLIN; 2916 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2917 2918 e.events = EPOLLIN; 2919 ASSERT_EQ(epoll_ctl(ctx.efd[2], EPOLL_CTL_ADD, ctx.sfd[2], &e), 0); 2920 2921 e.events = EPOLLIN | EPOLLET; 2922 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2923 2924 e.events = EPOLLIN | EPOLLET; 2925 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[2], &e), 0); 2926 2927 ctx.main = pthread_self(); 2928 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 2929 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0); 2930 2931 if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0) 2932 __sync_fetch_and_add(&ctx.count, 1); 2933 2934 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 2935 EXPECT_EQ(ctx.count, 2); 2936 2937 if (pthread_tryjoin_np(emitter, NULL) < 0) { 2938 pthread_kill(emitter, SIGUSR1); 2939 pthread_join(emitter, NULL); 2940 } 2941 2942 close(ctx.efd[0]); 2943 close(ctx.efd[1]); 2944 close(ctx.efd[2]); 2945 close(ctx.sfd[0]); 2946 close(ctx.sfd[1]); 2947 close(ctx.sfd[2]); 2948 close(ctx.sfd[3]); 2949} 2950 2951/* 2952 * t0 t1 2953 * (p) \ / (p) 2954 * e0 2955 * (lt) / \ (lt) 2956 * e1 e2 2957 * (lt) | | (lt) 2958 * s0 s2 2959 */ 2960TEST(epoll57) 2961{ 2962 pthread_t emitter; 2963 struct pollfd pfd; 2964 struct epoll_event e; 2965 struct epoll_mtcontext ctx = { 0 }; 2966 2967 signal(SIGUSR1, signal_handler); 2968 2969 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0); 2970 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0); 2971 2972 ctx.efd[0] = epoll_create(1); 2973 ASSERT_GE(ctx.efd[0], 0); 2974 2975 ctx.efd[1] = epoll_create(1); 2976 ASSERT_GE(ctx.efd[1], 0); 2977 2978 ctx.efd[2] = epoll_create(1); 2979 ASSERT_GE(ctx.efd[2], 0); 2980 2981 e.events = EPOLLIN; 2982 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 2983 2984 e.events = EPOLLIN; 2985 ASSERT_EQ(epoll_ctl(ctx.efd[2], EPOLL_CTL_ADD, ctx.sfd[2], &e), 0); 2986 2987 e.events = EPOLLIN; 2988 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 2989 2990 e.events = EPOLLIN; 2991 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[2], &e), 0); 2992 2993 ctx.main = pthread_self(); 2994 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 2995 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0); 2996 2997 pfd.fd = ctx.efd[0]; 2998 pfd.events = POLLIN; 2999 if (poll(&pfd, 1, -1) > 0) { 3000 if (epoll_wait(ctx.efd[0], &e, 1, 0) > 0) 3001 __sync_fetch_and_add(&ctx.count, 1); 3002 } 3003 3004 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 3005 EXPECT_EQ(ctx.count, 2); 3006 3007 if (pthread_tryjoin_np(emitter, NULL) < 0) { 3008 pthread_kill(emitter, SIGUSR1); 3009 pthread_join(emitter, NULL); 3010 } 3011 3012 close(ctx.efd[0]); 3013 close(ctx.efd[1]); 3014 close(ctx.efd[2]); 3015 close(ctx.sfd[0]); 3016 close(ctx.sfd[1]); 3017 close(ctx.sfd[2]); 3018 close(ctx.sfd[3]); 3019} 3020 3021/* 3022 * t0 t1 3023 * (p) \ / (p) 3024 * e0 3025 * (et) / \ (et) 3026 * e1 e2 3027 * (lt) | | (lt) 3028 * s0 s2 3029 */ 3030TEST(epoll58) 3031{ 3032 pthread_t emitter; 3033 struct pollfd pfd; 3034 struct epoll_event e; 3035 struct epoll_mtcontext ctx = { 0 }; 3036 3037 signal(SIGUSR1, signal_handler); 3038 3039 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0); 3040 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0); 3041 3042 ctx.efd[0] = epoll_create(1); 3043 ASSERT_GE(ctx.efd[0], 0); 3044 3045 ctx.efd[1] = epoll_create(1); 3046 ASSERT_GE(ctx.efd[1], 0); 3047 3048 ctx.efd[2] = epoll_create(1); 3049 ASSERT_GE(ctx.efd[2], 0); 3050 3051 e.events = EPOLLIN; 3052 ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 3053 3054 e.events = EPOLLIN; 3055 ASSERT_EQ(epoll_ctl(ctx.efd[2], EPOLL_CTL_ADD, ctx.sfd[2], &e), 0); 3056 3057 e.events = EPOLLIN | EPOLLET; 3058 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0); 3059 3060 e.events = EPOLLIN | EPOLLET; 3061 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[2], &e), 0); 3062 3063 ctx.main = pthread_self(); 3064 ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0); 3065 ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0); 3066 3067 pfd.fd = ctx.efd[0]; 3068 pfd.events = POLLIN; 3069 if (poll(&pfd, 1, -1) > 0) { 3070 if (epoll_wait(ctx.efd[0], &e, 1, 0) > 0) 3071 __sync_fetch_and_add(&ctx.count, 1); 3072 } 3073 3074 ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0); 3075 EXPECT_EQ(ctx.count, 2); 3076 3077 if (pthread_tryjoin_np(emitter, NULL) < 0) { 3078 pthread_kill(emitter, SIGUSR1); 3079 pthread_join(emitter, NULL); 3080 } 3081 3082 close(ctx.efd[0]); 3083 close(ctx.efd[1]); 3084 close(ctx.efd[2]); 3085 close(ctx.sfd[0]); 3086 close(ctx.sfd[1]); 3087 close(ctx.sfd[2]); 3088 close(ctx.sfd[3]); 3089} 3090 3091static void *epoll59_thread(void *ctx_) 3092{ 3093 struct epoll_mtcontext *ctx = ctx_; 3094 struct epoll_event e; 3095 int i; 3096 3097 for (i = 0; i < 100000; i++) { 3098 while (ctx->count == 0) 3099 ; 3100 3101 e.events = EPOLLIN | EPOLLERR | EPOLLET; 3102 epoll_ctl(ctx->efd[0], EPOLL_CTL_MOD, ctx->sfd[0], &e); 3103 ctx->count = 0; 3104 } 3105 3106 return NULL; 3107} 3108 3109/* 3110 * t0 3111 * (p) \ 3112 * e0 3113 * (et) / 3114 * e0 3115 * 3116 * Based on https://bugzilla.kernel.org/show_bug.cgi?id=205933 3117 */ 3118TEST(epoll59) 3119{ 3120 pthread_t emitter; 3121 struct pollfd pfd; 3122 struct epoll_event e; 3123 struct epoll_mtcontext ctx = { 0 }; 3124 int i, ret; 3125 3126 signal(SIGUSR1, signal_handler); 3127 3128 ctx.efd[0] = epoll_create1(0); 3129 ASSERT_GE(ctx.efd[0], 0); 3130 3131 ctx.sfd[0] = eventfd(1, 0); 3132 ASSERT_GE(ctx.sfd[0], 0); 3133 3134 e.events = EPOLLIN | EPOLLERR | EPOLLET; 3135 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 3136 3137 ASSERT_EQ(pthread_create(&emitter, NULL, epoll59_thread, &ctx), 0); 3138 3139 for (i = 0; i < 100000; i++) { 3140 ret = epoll_wait(ctx.efd[0], &e, 1, 1000); 3141 ASSERT_GT(ret, 0); 3142 3143 while (ctx.count != 0) 3144 ; 3145 ctx.count = 1; 3146 } 3147 if (pthread_tryjoin_np(emitter, NULL) < 0) { 3148 pthread_kill(emitter, SIGUSR1); 3149 pthread_join(emitter, NULL); 3150 } 3151 close(ctx.efd[0]); 3152 close(ctx.sfd[0]); 3153} 3154 3155enum { 3156 EPOLL60_EVENTS_NR = 10, 3157}; 3158 3159struct epoll60_ctx { 3160 volatile int stopped; 3161 int ready; 3162 int waiters; 3163 int epfd; 3164 int evfd[EPOLL60_EVENTS_NR]; 3165}; 3166 3167static void *epoll60_wait_thread(void *ctx_) 3168{ 3169 struct epoll60_ctx *ctx = ctx_; 3170 struct epoll_event e; 3171 sigset_t sigmask; 3172 uint64_t v; 3173 int ret; 3174 3175 /* Block SIGUSR1 */ 3176 sigemptyset(&sigmask); 3177 sigaddset(&sigmask, SIGUSR1); 3178 sigprocmask(SIG_SETMASK, &sigmask, NULL); 3179 3180 /* Prepare empty mask for epoll_pwait() */ 3181 sigemptyset(&sigmask); 3182 3183 while (!ctx->stopped) { 3184 /* Mark we are ready */ 3185 __atomic_fetch_add(&ctx->ready, 1, __ATOMIC_ACQUIRE); 3186 3187 /* Start when all are ready */ 3188 while (__atomic_load_n(&ctx->ready, __ATOMIC_ACQUIRE) && 3189 !ctx->stopped); 3190 3191 /* Account this waiter */ 3192 __atomic_fetch_add(&ctx->waiters, 1, __ATOMIC_ACQUIRE); 3193 3194 ret = epoll_pwait(ctx->epfd, &e, 1, 2000, &sigmask); 3195 if (ret != 1) { 3196 /* We expect only signal delivery on stop */ 3197 assert(ret < 0 && errno == EINTR && "Lost wakeup!\n"); 3198 assert(ctx->stopped); 3199 break; 3200 } 3201 3202 ret = read(e.data.fd, &v, sizeof(v)); 3203 /* Since we are on ET mode, thus each thread gets its own fd. */ 3204 assert(ret == sizeof(v)); 3205 3206 __atomic_fetch_sub(&ctx->waiters, 1, __ATOMIC_RELEASE); 3207 } 3208 3209 return NULL; 3210} 3211 3212static inline unsigned long long msecs(void) 3213{ 3214 struct timespec ts; 3215 unsigned long long msecs; 3216 3217 clock_gettime(CLOCK_REALTIME, &ts); 3218 msecs = ts.tv_sec * 1000ull; 3219 msecs += ts.tv_nsec / 1000000ull; 3220 3221 return msecs; 3222} 3223 3224static inline int count_waiters(struct epoll60_ctx *ctx) 3225{ 3226 return __atomic_load_n(&ctx->waiters, __ATOMIC_ACQUIRE); 3227} 3228 3229TEST(epoll60) 3230{ 3231 struct epoll60_ctx ctx = { 0 }; 3232 pthread_t waiters[ARRAY_SIZE(ctx.evfd)]; 3233 struct epoll_event e; 3234 int i, n, ret; 3235 3236 signal(SIGUSR1, signal_handler); 3237 3238 ctx.epfd = epoll_create1(0); 3239 ASSERT_GE(ctx.epfd, 0); 3240 3241 /* Create event fds */ 3242 for (i = 0; i < ARRAY_SIZE(ctx.evfd); i++) { 3243 ctx.evfd[i] = eventfd(0, EFD_NONBLOCK); 3244 ASSERT_GE(ctx.evfd[i], 0); 3245 3246 e.events = EPOLLIN | EPOLLET; 3247 e.data.fd = ctx.evfd[i]; 3248 ASSERT_EQ(epoll_ctl(ctx.epfd, EPOLL_CTL_ADD, ctx.evfd[i], &e), 0); 3249 } 3250 3251 /* Create waiter threads */ 3252 for (i = 0; i < ARRAY_SIZE(waiters); i++) 3253 ASSERT_EQ(pthread_create(&waiters[i], NULL, 3254 epoll60_wait_thread, &ctx), 0); 3255 3256 for (i = 0; i < 300; i++) { 3257 uint64_t v = 1, ms; 3258 3259 /* Wait for all to be ready */ 3260 while (__atomic_load_n(&ctx.ready, __ATOMIC_ACQUIRE) != 3261 ARRAY_SIZE(ctx.evfd)) 3262 ; 3263 3264 /* Steady, go */ 3265 __atomic_fetch_sub(&ctx.ready, ARRAY_SIZE(ctx.evfd), 3266 __ATOMIC_ACQUIRE); 3267 3268 /* Wait all have gone to kernel */ 3269 while (count_waiters(&ctx) != ARRAY_SIZE(ctx.evfd)) 3270 ; 3271 3272 /* 1ms should be enough to schedule away */ 3273 usleep(1000); 3274 3275 /* Quickly signal all handles at once */ 3276 for (n = 0; n < ARRAY_SIZE(ctx.evfd); n++) { 3277 ret = write(ctx.evfd[n], &v, sizeof(v)); 3278 ASSERT_EQ(ret, sizeof(v)); 3279 } 3280 3281 /* Busy loop for 1s and wait for all waiters to wake up */ 3282 ms = msecs(); 3283 while (count_waiters(&ctx) && msecs() < ms + 1000) 3284 ; 3285 3286 ASSERT_EQ(count_waiters(&ctx), 0); 3287 } 3288 ctx.stopped = 1; 3289 /* Stop waiters */ 3290 for (i = 0; i < ARRAY_SIZE(waiters); i++) 3291 ret = pthread_kill(waiters[i], SIGUSR1); 3292 for (i = 0; i < ARRAY_SIZE(waiters); i++) 3293 pthread_join(waiters[i], NULL); 3294 3295 for (i = 0; i < ARRAY_SIZE(waiters); i++) 3296 close(ctx.evfd[i]); 3297 close(ctx.epfd); 3298} 3299 3300struct epoll61_ctx { 3301 int epfd; 3302 int evfd; 3303}; 3304 3305static void *epoll61_write_eventfd(void *ctx_) 3306{ 3307 struct epoll61_ctx *ctx = ctx_; 3308 int64_t l = 1; 3309 3310 usleep(10950); 3311 write(ctx->evfd, &l, sizeof(l)); 3312 return NULL; 3313} 3314 3315static void *epoll61_epoll_with_timeout(void *ctx_) 3316{ 3317 struct epoll61_ctx *ctx = ctx_; 3318 struct epoll_event events[1]; 3319 int n; 3320 3321 n = epoll_wait(ctx->epfd, events, 1, 11); 3322 /* 3323 * If epoll returned the eventfd, write on the eventfd to wake up the 3324 * blocking poller. 3325 */ 3326 if (n == 1) { 3327 int64_t l = 1; 3328 3329 write(ctx->evfd, &l, sizeof(l)); 3330 } 3331 return NULL; 3332} 3333 3334static void *epoll61_blocking_epoll(void *ctx_) 3335{ 3336 struct epoll61_ctx *ctx = ctx_; 3337 struct epoll_event events[1]; 3338 3339 epoll_wait(ctx->epfd, events, 1, -1); 3340 return NULL; 3341} 3342 3343TEST(epoll61) 3344{ 3345 struct epoll61_ctx ctx; 3346 struct epoll_event ev; 3347 int i, r; 3348 3349 ctx.epfd = epoll_create1(0); 3350 ASSERT_GE(ctx.epfd, 0); 3351 ctx.evfd = eventfd(0, EFD_NONBLOCK); 3352 ASSERT_GE(ctx.evfd, 0); 3353 3354 ev.events = EPOLLIN | EPOLLET | EPOLLERR | EPOLLHUP; 3355 ev.data.ptr = NULL; 3356 r = epoll_ctl(ctx.epfd, EPOLL_CTL_ADD, ctx.evfd, &ev); 3357 ASSERT_EQ(r, 0); 3358 3359 /* 3360 * We are testing a race. Repeat the test case 1000 times to make it 3361 * more likely to fail in case of a bug. 3362 */ 3363 for (i = 0; i < 1000; i++) { 3364 pthread_t threads[3]; 3365 int n; 3366 3367 /* 3368 * Start 3 threads: 3369 * Thread 1 sleeps for 10.9ms and writes to the evenfd. 3370 * Thread 2 calls epoll with a timeout of 11ms. 3371 * Thread 3 calls epoll with a timeout of -1. 3372 * 3373 * The eventfd write by Thread 1 should either wakeup Thread 2 3374 * or Thread 3. If it wakes up Thread 2, Thread 2 writes on the 3375 * eventfd to wake up Thread 3. 3376 * 3377 * If no events are missed, all three threads should eventually 3378 * be joinable. 3379 */ 3380 ASSERT_EQ(pthread_create(&threads[0], NULL, 3381 epoll61_write_eventfd, &ctx), 0); 3382 ASSERT_EQ(pthread_create(&threads[1], NULL, 3383 epoll61_epoll_with_timeout, &ctx), 0); 3384 ASSERT_EQ(pthread_create(&threads[2], NULL, 3385 epoll61_blocking_epoll, &ctx), 0); 3386 3387 for (n = 0; n < ARRAY_SIZE(threads); ++n) 3388 ASSERT_EQ(pthread_join(threads[n], NULL), 0); 3389 } 3390 3391 close(ctx.epfd); 3392 close(ctx.evfd); 3393} 3394 3395/* Equivalent to basic test epoll1, but exercising epoll_pwait2. */ 3396TEST(epoll62) 3397{ 3398 int efd; 3399 int sfd[2]; 3400 struct epoll_event e; 3401 3402 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0); 3403 3404 efd = epoll_create(1); 3405 ASSERT_GE(efd, 0); 3406 3407 e.events = EPOLLIN; 3408 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0); 3409 3410 ASSERT_EQ(write(sfd[1], "w", 1), 1); 3411 3412 EXPECT_EQ(sys_epoll_pwait2(efd, &e, 1, NULL, NULL, 0), 1); 3413 EXPECT_EQ(sys_epoll_pwait2(efd, &e, 1, NULL, NULL, 0), 1); 3414 3415 close(efd); 3416 close(sfd[0]); 3417 close(sfd[1]); 3418} 3419 3420/* Epoll_pwait2 basic timeout test. */ 3421TEST(epoll63) 3422{ 3423 const int cfg_delay_ms = 10; 3424 unsigned long long tdiff; 3425 struct __kernel_timespec ts; 3426 int efd; 3427 int sfd[2]; 3428 struct epoll_event e; 3429 3430 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0); 3431 3432 efd = epoll_create(1); 3433 ASSERT_GE(efd, 0); 3434 3435 e.events = EPOLLIN; 3436 ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0); 3437 3438 ts.tv_sec = 0; 3439 ts.tv_nsec = cfg_delay_ms * 1000 * 1000; 3440 3441 tdiff = msecs(); 3442 EXPECT_EQ(sys_epoll_pwait2(efd, &e, 1, &ts, NULL, 0), 0); 3443 tdiff = msecs() - tdiff; 3444 3445 EXPECT_GE(tdiff, cfg_delay_ms); 3446 3447 close(efd); 3448 close(sfd[0]); 3449 close(sfd[1]); 3450} 3451 3452/* 3453 * t0 t1 3454 * (ew) \ / (ew) 3455 * e0 3456 * | (lt) 3457 * s0 3458 */ 3459TEST(epoll64) 3460{ 3461 pthread_t waiter[2]; 3462 struct epoll_event e; 3463 struct epoll_mtcontext ctx = { 0 }; 3464 3465 signal(SIGUSR1, signal_handler); 3466 3467 ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0); 3468 3469 ctx.efd[0] = epoll_create(1); 3470 ASSERT_GE(ctx.efd[0], 0); 3471 3472 e.events = EPOLLIN; 3473 ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0); 3474 3475 /* 3476 * main will act as the emitter once both waiter threads are 3477 * blocked and expects to both be awoken upon the ready event. 3478 */ 3479 ctx.main = pthread_self(); 3480 ASSERT_EQ(pthread_create(&waiter[0], NULL, waiter_entry1a, &ctx), 0); 3481 ASSERT_EQ(pthread_create(&waiter[1], NULL, waiter_entry1a, &ctx), 0); 3482 3483 usleep(100000); 3484 ASSERT_EQ(write(ctx.sfd[1], "w", 1), 1); 3485 3486 ASSERT_EQ(pthread_join(waiter[0], NULL), 0); 3487 ASSERT_EQ(pthread_join(waiter[1], NULL), 0); 3488 3489 EXPECT_EQ(ctx.count, 2); 3490 3491 close(ctx.efd[0]); 3492 close(ctx.sfd[0]); 3493 close(ctx.sfd[1]); 3494} 3495 3496TEST_HARNESS_MAIN 3497