Add epoll test

src/header/sys_epoll/cbindgen.toml

@@ -1,4 +1,4 @@
-sys_includes = []
+sys_includes = ["signal.h"]
 include_guard = "_SYS_EPOLL_H"
 language = "C"
 style = "Tag"

tests/Makefile

@@ -61,6 +61,7 @@ EXPECT_BINS=\
 	string/strtok \
 	string/strtok_r \
 	strings \
+	sys_epoll/epoll \
 	time/asctime \
 	time/gmtime \
 	time/localtime \

tests/expected/sys_epoll/epoll.stdout

@@ -0,0 +1,1024 @@
+0 == 0
+1 == 1
+2 == 2
+3 == 3
+4 == 4
+5 == 5
+6 == 6
+7 == 7
+8 == 8
+9 == 9
+10 == 10
+11 == 11
+12 == 12
+13 == 13
+14 == 14
+15 == 15
+16 == 16
+17 == 17
+18 == 18
+19 == 19
+20 == 20
+21 == 21
+22 == 22
+23 == 23
+24 == 24
+25 == 25
+26 == 26
+27 == 27
+28 == 28
+29 == 29
+30 == 30
+31 == 31
+32 == 32
+33 == 33
+34 == 34
+35 == 35
+36 == 36
+37 == 37
+38 == 38
+39 == 39
+40 == 40
+41 == 41
+42 == 42
+43 == 43
+44 == 44
+45 == 45
+46 == 46
+47 == 47
+48 == 48
+49 == 49
+50 == 50
+51 == 51
+52 == 52
+53 == 53
+54 == 54
+55 == 55
+56 == 56
+57 == 57
+58 == 58
+59 == 59
+60 == 60
+61 == 61
+62 == 62
+63 == 63
+64 == 64
+65 == 65
+66 == 66
+67 == 67
+68 == 68
+69 == 69
+70 == 70
+71 == 71
+72 == 72
+73 == 73
+74 == 74
+75 == 75
+76 == 76
+77 == 77
+78 == 78
+79 == 79
+80 == 80
+81 == 81
+82 == 82
+83 == 83
+84 == 84
+85 == 85
+86 == 86
+87 == 87
+88 == 88
+89 == 89
+90 == 90
+91 == 91
+92 == 92
+93 == 93
+94 == 94
+95 == 95
+96 == 96
+97 == 97
+98 == 98
+99 == 99
+100 == 100
+101 == 101
+102 == 102
+103 == 103
+104 == 104
+105 == 105
+106 == 106
+107 == 107
+108 == 108
+109 == 109
+110 == 110
+111 == 111
+112 == 112
+113 == 113
+114 == 114
+115 == 115
+116 == 116
+117 == 117
+118 == 118
+119 == 119
+120 == 120
+121 == 121
+122 == 122
+123 == 123
+124 == 124
+125 == 125
+126 == 126
+127 == 127
+128 == 128
+129 == 129
+130 == 130
+131 == 131
+132 == 132
+133 == 133
+134 == 134
+135 == 135
+136 == 136
+137 == 137
+138 == 138
+139 == 139
+140 == 140
+141 == 141
+142 == 142
+143 == 143
+144 == 144
+145 == 145
+146 == 146
+147 == 147
+148 == 148
+149 == 149
+150 == 150
+151 == 151
+152 == 152
+153 == 153
+154 == 154
+155 == 155
+156 == 156
+157 == 157
+158 == 158
+159 == 159
+160 == 160
+161 == 161
+162 == 162
+163 == 163
+164 == 164
+165 == 165
+166 == 166
+167 == 167
+168 == 168
+169 == 169
+170 == 170
+171 == 171
+172 == 172
+173 == 173
+174 == 174
+175 == 175
+176 == 176
+177 == 177
+178 == 178
+179 == 179
+180 == 180
+181 == 181
+182 == 182
+183 == 183
+184 == 184
+185 == 185
+186 == 186
+187 == 187
+188 == 188
+189 == 189
+190 == 190
+191 == 191
+192 == 192
+193 == 193
+194 == 194
+195 == 195
+196 == 196
+197 == 197
+198 == 198
+199 == 199
+200 == 200
+201 == 201
+202 == 202
+203 == 203
+204 == 204
+205 == 205
+206 == 206
+207 == 207
+208 == 208
+209 == 209
+210 == 210
+211 == 211
+212 == 212
+213 == 213
+214 == 214
+215 == 215
+216 == 216
+217 == 217
+218 == 218
+219 == 219
+220 == 220
+221 == 221
+222 == 222
+223 == 223
+224 == 224
+225 == 225
+226 == 226
+227 == 227
+228 == 228
+229 == 229
+230 == 230
+231 == 231
+232 == 232
+233 == 233
+234 == 234
+235 == 235
+236 == 236
+237 == 237
+238 == 238
+239 == 239
+240 == 240
+241 == 241
+242 == 242
+243 == 243
+244 == 244
+245 == 245
+246 == 246
+247 == 247
+248 == 248
+249 == 249
+250 == 250
+251 == 251
+252 == 252
+253 == 253
+254 == 254
+255 == 255
+256 == 256
+257 == 257
+258 == 258
+259 == 259
+260 == 260
+261 == 261
+262 == 262
+263 == 263
+264 == 264
+265 == 265
+266 == 266
+267 == 267
+268 == 268
+269 == 269
+270 == 270
+271 == 271
+272 == 272
+273 == 273
+274 == 274
+275 == 275
+276 == 276
+277 == 277
+278 == 278
+279 == 279
+280 == 280
+281 == 281
+282 == 282
+283 == 283
+284 == 284
+285 == 285
+286 == 286
+287 == 287
+288 == 288
+289 == 289
+290 == 290
+291 == 291
+292 == 292
+293 == 293
+294 == 294
+295 == 295
+296 == 296
+297 == 297
+298 == 298
+299 == 299
+300 == 300
+301 == 301
+302 == 302
+303 == 303
+304 == 304
+305 == 305
+306 == 306
+307 == 307
+308 == 308
+309 == 309
+310 == 310
+311 == 311
+312 == 312
+313 == 313
+314 == 314
+315 == 315
+316 == 316
+317 == 317
+318 == 318
+319 == 319
+320 == 320
+321 == 321
+322 == 322
+323 == 323
+324 == 324
+325 == 325
+326 == 326
+327 == 327
+328 == 328
+329 == 329
+330 == 330
+331 == 331
+332 == 332
+333 == 333
+334 == 334
+335 == 335
+336 == 336
+337 == 337
+338 == 338
+339 == 339
+340 == 340
+341 == 341
+342 == 342
+343 == 343
+344 == 344
+345 == 345
+346 == 346
+347 == 347
+348 == 348
+349 == 349
+350 == 350
+351 == 351
+352 == 352
+353 == 353
+354 == 354
+355 == 355
+356 == 356
+357 == 357
+358 == 358
+359 == 359
+360 == 360
+361 == 361
+362 == 362
+363 == 363
+364 == 364
+365 == 365
+366 == 366
+367 == 367
+368 == 368
+369 == 369
+370 == 370
+371 == 371
+372 == 372
+373 == 373
+374 == 374
+375 == 375
+376 == 376
+377 == 377
+378 == 378
+379 == 379
+380 == 380
+381 == 381
+382 == 382
+383 == 383
+384 == 384
+385 == 385
+386 == 386
+387 == 387
+388 == 388
+389 == 389
+390 == 390
+391 == 391
+392 == 392
+393 == 393
+394 == 394
+395 == 395
+396 == 396
+397 == 397
+398 == 398
+399 == 399
+400 == 400
+401 == 401
+402 == 402
+403 == 403
+404 == 404
+405 == 405
+406 == 406
+407 == 407
+408 == 408
+409 == 409
+410 == 410
+411 == 411
+412 == 412
+413 == 413
+414 == 414
+415 == 415
+416 == 416
+417 == 417
+418 == 418
+419 == 419
+420 == 420
+421 == 421
+422 == 422
+423 == 423
+424 == 424
+425 == 425
+426 == 426
+427 == 427
+428 == 428
+429 == 429
+430 == 430
+431 == 431
+432 == 432
+433 == 433
+434 == 434
+435 == 435
+436 == 436
+437 == 437
+438 == 438
+439 == 439
+440 == 440
+441 == 441
+442 == 442
+443 == 443
+444 == 444
+445 == 445
+446 == 446
+447 == 447
+448 == 448
+449 == 449
+450 == 450
+451 == 451
+452 == 452
+453 == 453
+454 == 454
+455 == 455
+456 == 456
+457 == 457
+458 == 458
+459 == 459
+460 == 460
+461 == 461
+462 == 462
+463 == 463
+464 == 464
+465 == 465
+466 == 466
+467 == 467
+468 == 468
+469 == 469
+470 == 470
+471 == 471
+472 == 472
+473 == 473
+474 == 474
+475 == 475
+476 == 476
+477 == 477
+478 == 478
+479 == 479
+480 == 480
+481 == 481
+482 == 482
+483 == 483
+484 == 484
+485 == 485
+486 == 486
+487 == 487
+488 == 488
+489 == 489
+490 == 490
+491 == 491
+492 == 492
+493 == 493
+494 == 494
+495 == 495
+496 == 496
+497 == 497
+498 == 498
+499 == 499
+500 == 500
+501 == 501
+502 == 502
+503 == 503
+504 == 504
+505 == 505
+506 == 506
+507 == 507
+508 == 508
+509 == 509
+510 == 510
+511 == 511
+512 == 512
+513 == 513
+514 == 514
+515 == 515
+516 == 516
+517 == 517
+518 == 518
+519 == 519
+520 == 520
+521 == 521
+522 == 522
+523 == 523
+524 == 524
+525 == 525
+526 == 526
+527 == 527
+528 == 528
+529 == 529
+530 == 530
+531 == 531
+532 == 532
+533 == 533
+534 == 534
+535 == 535
+536 == 536
+537 == 537
+538 == 538
+539 == 539
+540 == 540
+541 == 541
+542 == 542
+543 == 543
+544 == 544
+545 == 545
+546 == 546
+547 == 547
+548 == 548
+549 == 549
+550 == 550
+551 == 551
+552 == 552
+553 == 553
+554 == 554
+555 == 555
+556 == 556
+557 == 557
+558 == 558
+559 == 559
+560 == 560
+561 == 561
+562 == 562
+563 == 563
+564 == 564
+565 == 565
+566 == 566
+567 == 567
+568 == 568
+569 == 569
+570 == 570
+571 == 571
+572 == 572
+573 == 573
+574 == 574
+575 == 575
+576 == 576
+577 == 577
+578 == 578
+579 == 579
+580 == 580
+581 == 581
+582 == 582
+583 == 583
+584 == 584
+585 == 585
+586 == 586
+587 == 587
+588 == 588
+589 == 589
+590 == 590
+591 == 591
+592 == 592
+593 == 593
+594 == 594
+595 == 595
+596 == 596
+597 == 597
+598 == 598
+599 == 599
+600 == 600
+601 == 601
+602 == 602
+603 == 603
+604 == 604
+605 == 605
+606 == 606
+607 == 607
+608 == 608
+609 == 609
+610 == 610
+611 == 611
+612 == 612
+613 == 613
+614 == 614
+615 == 615
+616 == 616
+617 == 617
+618 == 618
+619 == 619
+620 == 620
+621 == 621
+622 == 622
+623 == 623
+624 == 624
+625 == 625
+626 == 626
+627 == 627
+628 == 628
+629 == 629
+630 == 630
+631 == 631
+632 == 632
+633 == 633
+634 == 634
+635 == 635
+636 == 636
+637 == 637
+638 == 638
+639 == 639
+640 == 640
+641 == 641
+642 == 642
+643 == 643
+644 == 644
+645 == 645
+646 == 646
+647 == 647
+648 == 648
+649 == 649
+650 == 650
+651 == 651
+652 == 652
+653 == 653
+654 == 654
+655 == 655
+656 == 656
+657 == 657
+658 == 658
+659 == 659
+660 == 660
+661 == 661
+662 == 662
+663 == 663
+664 == 664
+665 == 665
+666 == 666
+667 == 667
+668 == 668
+669 == 669
+670 == 670
+671 == 671
+672 == 672
+673 == 673
+674 == 674
+675 == 675
+676 == 676
+677 == 677
+678 == 678
+679 == 679
+680 == 680
+681 == 681
+682 == 682
+683 == 683
+684 == 684
+685 == 685
+686 == 686
+687 == 687
+688 == 688
+689 == 689
+690 == 690
+691 == 691
+692 == 692
+693 == 693
+694 == 694
+695 == 695
+696 == 696
+697 == 697
+698 == 698
+699 == 699
+700 == 700
+701 == 701
+702 == 702
+703 == 703
+704 == 704
+705 == 705
+706 == 706
+707 == 707
+708 == 708
+709 == 709
+710 == 710
+711 == 711
+712 == 712
+713 == 713
+714 == 714
+715 == 715
+716 == 716
+717 == 717
+718 == 718
+719 == 719
+720 == 720
+721 == 721
+722 == 722
+723 == 723
+724 == 724
+725 == 725
+726 == 726
+727 == 727
+728 == 728
+729 == 729
+730 == 730
+731 == 731
+732 == 732
+733 == 733
+734 == 734
+735 == 735
+736 == 736
+737 == 737
+738 == 738
+739 == 739
+740 == 740
+741 == 741
+742 == 742
+743 == 743
+744 == 744
+745 == 745
+746 == 746
+747 == 747
+748 == 748
+749 == 749
+750 == 750
+751 == 751
+752 == 752
+753 == 753
+754 == 754
+755 == 755
+756 == 756
+757 == 757
+758 == 758
+759 == 759
+760 == 760
+761 == 761
+762 == 762
+763 == 763
+764 == 764
+765 == 765
+766 == 766
+767 == 767
+768 == 768
+769 == 769
+770 == 770
+771 == 771
+772 == 772
+773 == 773
+774 == 774
+775 == 775
+776 == 776
+777 == 777
+778 == 778
+779 == 779
+780 == 780
+781 == 781
+782 == 782
+783 == 783
+784 == 784
+785 == 785
+786 == 786
+787 == 787
+788 == 788
+789 == 789
+790 == 790
+791 == 791
+792 == 792
+793 == 793
+794 == 794
+795 == 795
+796 == 796
+797 == 797
+798 == 798
+799 == 799
+800 == 800
+801 == 801
+802 == 802
+803 == 803
+804 == 804
+805 == 805
+806 == 806
+807 == 807
+808 == 808
+809 == 809
+810 == 810
+811 == 811
+812 == 812
+813 == 813
+814 == 814
+815 == 815
+816 == 816
+817 == 817
+818 == 818
+819 == 819
+820 == 820
+821 == 821
+822 == 822
+823 == 823
+824 == 824
+825 == 825
+826 == 826
+827 == 827
+828 == 828
+829 == 829
+830 == 830
+831 == 831
+832 == 832
+833 == 833
+834 == 834
+835 == 835
+836 == 836
+837 == 837
+838 == 838
+839 == 839
+840 == 840
+841 == 841
+842 == 842
+843 == 843
+844 == 844
+845 == 845
+846 == 846
+847 == 847
+848 == 848
+849 == 849
+850 == 850
+851 == 851
+852 == 852
+853 == 853
+854 == 854
+855 == 855
+856 == 856
+857 == 857
+858 == 858
+859 == 859
+860 == 860
+861 == 861
+862 == 862
+863 == 863
+864 == 864
+865 == 865
+866 == 866
+867 == 867
+868 == 868
+869 == 869
+870 == 870
+871 == 871
+872 == 872
+873 == 873
+874 == 874
+875 == 875
+876 == 876
+877 == 877
+878 == 878
+879 == 879
+880 == 880
+881 == 881
+882 == 882
+883 == 883
+884 == 884
+885 == 885
+886 == 886
+887 == 887
+888 == 888
+889 == 889
+890 == 890
+891 == 891
+892 == 892
+893 == 893
+894 == 894
+895 == 895
+896 == 896
+897 == 897
+898 == 898
+899 == 899
+900 == 900
+901 == 901
+902 == 902
+903 == 903
+904 == 904
+905 == 905
+906 == 906
+907 == 907
+908 == 908
+909 == 909
+910 == 910
+911 == 911
+912 == 912
+913 == 913
+914 == 914
+915 == 915
+916 == 916
+917 == 917
+918 == 918
+919 == 919
+920 == 920
+921 == 921
+922 == 922
+923 == 923
+924 == 924
+925 == 925
+926 == 926
+927 == 927
+928 == 928
+929 == 929
+930 == 930
+931 == 931
+932 == 932
+933 == 933
+934 == 934
+935 == 935
+936 == 936
+937 == 937
+938 == 938
+939 == 939
+940 == 940
+941 == 941
+942 == 942
+943 == 943
+944 == 944
+945 == 945
+946 == 946
+947 == 947
+948 == 948
+949 == 949
+950 == 950
+951 == 951
+952 == 952
+953 == 953
+954 == 954
+955 == 955
+956 == 956
+957 == 957
+958 == 958
+959 == 959
+960 == 960
+961 == 961
+962 == 962
+963 == 963
+964 == 964
+965 == 965
+966 == 966
+967 == 967
+968 == 968
+969 == 969
+970 == 970
+971 == 971
+972 == 972
+973 == 973
+974 == 974
+975 == 975
+976 == 976
+977 == 977
+978 == 978
+979 == 979
+980 == 980
+981 == 981
+982 == 982
+983 == 983
+984 == 984
+985 == 985
+986 == 986
+987 == 987
+988 == 988
+989 == 989
+990 == 990
+991 == 991
+992 == 992
+993 == 993
+994 == 994
+995 == 995
+996 == 996
+997 == 997
+998 == 998
+999 == 999
+1000 == 1000
+1001 == 1001
+1002 == 1002
+1003 == 1003
+1004 == 1004
+1005 == 1005
+1006 == 1006
+1007 == 1007
+1008 == 1008
+1009 == 1009
+1010 == 1010
+1011 == 1011
+1012 == 1012
+1013 == 1013
+1014 == 1014
+1015 == 1015
+1016 == 1016
+1017 == 1017
+1018 == 1018
+1019 == 1019
+1020 == 1020
+1021 == 1021
+1022 == 1022
+1023 == 1023

tests/sys_epoll/epoll.c

@@ -0,0 +1,158 @@
+#include <fcntl.h>
+#include <stdio.h>
+#include <sys/epoll.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+int reader(int fd) {
+    // Create an epoll file
+    int epollfd = epoll_create1(EPOLL_CLOEXEC);
+    if (epollfd < 0) {
+        perror("epoll_create1");
+        return 1;
+    }
+
+    // Register for events from the reader file
+    struct epoll_event ev;
+    ev.events = EPOLLIN;
+    ev.data.fd = fd;
+    if (epoll_ctl(epollfd, EPOLL_CTL_ADD, fd, &ev) < 0) {
+        perror("epoll_ctl");
+        return 1;
+    }
+
+    // Process exactly 1024 events
+    struct epoll_event events[8];
+    for (int i = 0; i < 1024; i++) {
+        // Wait for the next event
+        int nfds = epoll_wait(epollfd, events, sizeof(events)/sizeof(struct epoll_event), -1);
+        if (nfds < 0) {
+            perror("epoll_wait");
+            return 1;
+        }
+
+        // For each event received
+        for (int n = 0; n < nfds; n++) {
+            // If the event is the reader file
+            if (events[n].data.fd == fd) {
+                // Read the current event count
+                int writer_i;
+                int count = read(fd, &writer_i, sizeof(writer_i));
+                if (count < 0) {
+                    perror("read");
+                    return 1;
+                } else if (count < sizeof(writer_i)) {
+                    fprintf(stderr, "read %d instead of %d\n", count, sizeof(writer_i));
+                    return 1;
+                }
+                // Make sure the writer's event count matches our own
+                if (i != writer_i) {
+                    fprintf(stderr, "received event count %d instead of %d\n", writer_i, i);
+                    return 1;
+                }
+                printf("%d == %d\n", i, writer_i);
+            } else {
+                // Otherwise, return an error
+                fprintf(stderr, "unknown fd %d\n", events[n].data.fd);
+                return 1;
+            }
+        }
+    }
+
+    return 0;
+}
+
+int writer(int fd) {
+    // Create an epoll file
+    int epollfd = epoll_create1(EPOLL_CLOEXEC);
+    if (epollfd < 0) {
+        perror("epoll_create1");
+        return 1;
+    }
+
+    // Register for events from the writer file
+    struct epoll_event ev;
+    ev.events = EPOLLOUT;
+    ev.data.fd = fd;
+    if (epoll_ctl(epollfd, EPOLL_CTL_ADD, fd, &ev) < 0) {
+        perror("epoll_ctl");
+        return 1;
+    }
+
+    // Process exactly 1024 events
+    struct epoll_event events[8];
+    for (int i = 0; i < 1024; i++) {
+        // Wait for the next event
+        int nfds = epoll_wait(epollfd, events, sizeof(events)/sizeof(struct epoll_event), -1);
+        if (nfds < 0) {
+            perror("epoll_wait");
+            return 1;
+        }
+
+        // For each event received
+        for (int n = 0; n < nfds; n++) {
+            // If the event is the writer file
+            if (events[n].data.fd == fd) {
+                // Write the current event count
+                int count = write(fd, &i, sizeof(i));
+                if (count < 0) {
+                    perror("write");
+                    return 1;
+                } else if (count < sizeof(i)) {
+                    fprintf(stderr, "wrote %d instead of %d\n", count, sizeof(i));
+                    return 1;
+                }
+            } else {
+                // Otherwise, return an error
+                fprintf(stderr, "unknown fd %d\n", events[n].data.fd);
+                return 1;
+            }
+        }
+    }
+
+    return 0;
+}
+
+int main(int argc, char **argv) {
+    // Create a non-blocking pipe to use for epoll testing
+    int pipefd[2];
+    if (pipe2(pipefd, O_CLOEXEC | O_NONBLOCK) < 0) {
+        perror("pipe2");
+        return 1;
+    }
+
+    pid_t pid = fork();
+    if (pid < 0) {
+        perror("fork");
+        return 1;
+    } else if (pid == 0) {
+        // Child process will read events
+        close(pipefd[1]);
+        return reader(pipefd[0]);
+    } else {
+        // Parent process will write events
+        close(pipefd[0]);
+        int ret = writer(pipefd[1]);
+
+        // Wait for child process
+        int status = 0;
+        if (waitpid(pid, &status, 0) != pid) {
+            perror("waitpid");
+            return 1;
+        }
+
+        // If writer failed, return exit status
+        if (ret != 0) {
+            return ret;
+        }
+
+        // If child exited with exit status
+        if (WIFEXITED(status)) {
+            // Return the child's exit status
+            return WEXITSTATUS(status);
+        } else {
+            // Otherwise, return 1
+            return 1;
+        }
+    }
+}