| 1 | /*++ |
| 2 | |
| 3 | Copyright (c) Microsoft. All rights reserved. |
| 4 | |
| 5 | Module Name: |
| 6 | |
| 7 | timer.c |
| 8 | |
| 9 | Abstract: |
| 10 | |
| 11 | This file is a timer test. |
| 12 | |
| 13 | --*/ |
| 14 | |
| 15 | #include "lxtcommon.h" |
| 16 | #include "unittests.h" |
| 17 | #include <signal.h> |
| 18 | #include <time.h> |
| 19 | #include <sys/resource.h> |
| 20 | #include <sys/types.h> |
| 21 | #include <sys/wait.h> |
| 22 | #include <sys/time.h> |
| 23 | #include <limits.h> |
| 24 | #include <stdlib.h> |
| 25 | #include <stdio.h> |
| 26 | |
| 27 | #define LXT_NAME "timer" |
| 28 | |
| 29 | #define LXT_SHORT_TIMER 1 |
| 30 | #define LXT_SHORT_TIMER_WAIT_PID 5 |
| 31 | #define LXT_SHORT_TIMER_US 250000 |
| 32 | #define LXT_LONG_TIMER 10 |
| 33 | |
| 34 | #define LXT_INVALID_TIMER_ID ((timer_t) - 1) |
| 35 | |
| 36 | int AlarmSyscall(PLXT_ARGS Args); |
| 37 | |
| 38 | int ITimerInvalidParam(PLXT_ARGS Args); |
| 39 | |
| 40 | int ITimerPerThreadGroup(PLXT_ARGS Args); |
| 41 | |
| 42 | int ITimerSignal(PLXT_ARGS Args); |
| 43 | |
| 44 | int ITimerPeriodicSignal(PLXT_ARGS Args); |
| 45 | |
| 46 | int NanosleepInvalidParam(PLXT_ARGS Args); |
| 47 | |
| 48 | int TimerCreateSyscall(PLXT_ARGS Args); |
| 49 | |
| 50 | int TimerCreateInvalidParam(PLXT_ARGS Args); |
| 51 | |
| 52 | int ClockGetTimeAlignment(PLXT_ARGS Args); |
| 53 | |
| 54 | // |
| 55 | // Global constants |
| 56 | // |
| 57 | |
| 58 | static const LXT_VARIATION g_LxtVariations[] = { |
| 59 | {"nanosleep invalid param", NanosleepInvalidParam}, |
| 60 | {"ITimerPerThreadGroup", ITimerPerThreadGroup}, |
| 61 | {"ITimerSignal", ITimerSignal}, |
| 62 | {"AlarmSyscall", AlarmSyscall}, |
| 63 | {"ITimerPeriodicSignal", ITimerPeriodicSignal}, |
| 64 | {"ITimer invalid param", ITimerInvalidParam}, |
| 65 | {"timer_create", TimerCreateSyscall}, |
| 66 | {"timer_create invalid param", TimerCreateInvalidParam}, |
| 67 | {"clock_gettime alignment", ClockGetTimeAlignment}}; |
| 68 | |
| 69 | static const struct itimerval g_ZeroTimer; |
| 70 | |
| 71 | // |
| 72 | // Global variables |
| 73 | // |
| 74 | |
| 75 | static struct timespec g_SignalTime; |
| 76 | static int g_SignalCount; |
| 77 | |
| 78 | int TimerTestEntry(int Argc, char* Argv[]) |
| 79 | |
| 80 | /*++ |
| 81 | --*/ |
| 82 | |
| 83 | { |
| 84 | |
| 85 | LXT_ARGS Args; |
| 86 | int Result; |
| 87 | |
| 88 | LxtCheckResult(LxtInitialize(Argc, Argv, &Args, LXT_NAME)); |
| 89 | LXT_SYNCHRONIZATION_POINT_INIT(); |
| 90 | LxtCheckResult(LxtRunVariations(&Args, g_LxtVariations, LXT_COUNT_OF(g_LxtVariations))); |
| 91 | |
| 92 | ErrorExit: |
| 93 | LXT_SYNCHRONIZATION_POINT_DESTROY(); |
| 94 | LxtUninitialize(); |
| 95 | return !LXT_SUCCESS(Result); |
| 96 | } |
| 97 | |
| 98 | int ITimerInvalidParam(PLXT_ARGS Args) |
| 99 | |
| 100 | { |
| 101 | |
| 102 | struct itimerval NewTimer; |
| 103 | int Result; |
| 104 | |
| 105 | memset(&NewTimer, 0, sizeof(NewTimer)); |
| 106 | NewTimer.it_value.tv_sec = -1; |
| 107 | LxtCheckErrnoFailure(setitimer(ITIMER_REAL, &NewTimer, NULL), EINVAL); |
| 108 | memset(&NewTimer, 0, sizeof(NewTimer)); |
| 109 | NewTimer.it_value.tv_usec = 999999 + 1; |
| 110 | LxtCheckErrnoFailure(setitimer(ITIMER_REAL, &NewTimer, NULL), EINVAL); |
| 111 | memset(&NewTimer, 0, sizeof(NewTimer)); |
| 112 | NewTimer.it_interval.tv_sec = -1; |
| 113 | LxtCheckErrnoFailure(setitimer(ITIMER_REAL, &NewTimer, NULL), EINVAL); |
| 114 | memset(&NewTimer, 0, sizeof(NewTimer)); |
| 115 | NewTimer.it_interval.tv_usec = 999999 + 1; |
| 116 | LxtCheckErrnoFailure(setitimer(ITIMER_REAL, &NewTimer, NULL), EINVAL); |
| 117 | |
| 118 | ErrorExit: |
| 119 | return Result; |
| 120 | } |
| 121 | |
| 122 | void* ITimerPerThreadGroupWorker(void* ptr) |
| 123 | |
| 124 | { |
| 125 | |
| 126 | struct itimerval NewTimer; |
| 127 | struct itimerval OldTimer; |
| 128 | int Result; |
| 129 | |
| 130 | // |
| 131 | // Check that the timer is per threadgroup and the result is the remaining |
| 132 | // time. |
| 133 | // |
| 134 | |
| 135 | memset(&NewTimer, 0, sizeof(NewTimer)); |
| 136 | memset(&OldTimer, 1, sizeof(OldTimer)); |
| 137 | sleep(1); |
| 138 | LxtCheckResult(setitimer(ITIMER_REAL, &NewTimer, &OldTimer)); |
| 139 | if (OldTimer.it_value.tv_sec >= LXT_LONG_TIMER) |
| 140 | { |
| 141 | Result = 1; |
| 142 | LxtLogError("Unexpected OldTimer %d", OldTimer.it_value.tv_sec); |
| 143 | goto ErrorExit; |
| 144 | } |
| 145 | |
| 146 | ErrorExit: |
| 147 | return 0; |
| 148 | } |
| 149 | |
| 150 | int ITimerPerThreadGroup(PLXT_ARGS Args) |
| 151 | |
| 152 | /*++ |
| 153 | --*/ |
| 154 | |
| 155 | { |
| 156 | |
| 157 | int ChildPid; |
| 158 | int Result; |
| 159 | struct itimerval NewTimer; |
| 160 | struct itimerval OldTimer; |
| 161 | pthread_t Thread = {0}; |
| 162 | |
| 163 | // |
| 164 | // Check that the timer is per threadgroup and not preserved across fork. |
| 165 | // |
| 166 | |
| 167 | memset(&NewTimer, 0, sizeof(NewTimer)); |
| 168 | NewTimer.it_value.tv_sec = LXT_LONG_TIMER; |
| 169 | memset(&OldTimer, 1, sizeof(OldTimer)); |
| 170 | LxtCheckResult(setitimer(ITIMER_REAL, &NewTimer, &OldTimer)); |
| 171 | LxtCheckResult(LxtCompareMemory((void*)&g_ZeroTimer, (void*)&OldTimer, sizeof(g_ZeroTimer), "Zero", "Initial")); |
| 172 | LxtCheckResult(ChildPid = fork()); |
| 173 | if (ChildPid == 0) |
| 174 | { |
| 175 | memset(&OldTimer, 1, sizeof(OldTimer)); |
| 176 | LxtCheckResult(setitimer(ITIMER_REAL, &NewTimer, &OldTimer)); |
| 177 | LxtCheckResult(LxtCompareMemory((void*)&g_ZeroTimer, (void*)&OldTimer, sizeof(g_ZeroTimer), "Zero", "Initial child")); |
| 178 | _exit(LXT_RESULT_SUCCESS); |
| 179 | } |
| 180 | |
| 181 | LxtCheckResult(LxtWaitPidPoll(ChildPid, LXT_RESULT_SUCCESS)); |
| 182 | LxtCheckErrno(pthread_create(&Thread, NULL, ITimerPerThreadGroupWorker, NULL)); |
| 183 | pthread_join(Thread, NULL); |
| 184 | |
| 185 | Result = LXT_RESULT_SUCCESS; |
| 186 | |
| 187 | ErrorExit: |
| 188 | return Result; |
| 189 | } |
| 190 | |
| 191 | void ITimerSignalHandler(int Signal) |
| 192 | |
| 193 | /*++ |
| 194 | --*/ |
| 195 | |
| 196 | { |
| 197 | if (Signal == SIGALRM) |
| 198 | { |
| 199 | LxtClockGetTime(CLOCK_REALTIME, &g_SignalTime); |
| 200 | } |
| 201 | |
| 202 | return; |
| 203 | } |
| 204 | |
| 205 | int ITimerSignal(PLXT_ARGS Args) |
| 206 | |
| 207 | /*++ |
| 208 | --*/ |
| 209 | |
| 210 | { |
| 211 | |
| 212 | struct sigaction Action; |
| 213 | int ChildPid; |
| 214 | int ExpectedWaitStatus; |
| 215 | int Result; |
| 216 | struct timespec StartTime; |
| 217 | struct itimerval NewTimer; |
| 218 | |
| 219 | // |
| 220 | // Check the different dispositions of the SIGALRM signal and cancelling the |
| 221 | // timer. |
| 222 | // |
| 223 | |
| 224 | // |
| 225 | // Default disposition should terminate |
| 226 | // |
| 227 | |
| 228 | LxtCheckResult(ChildPid = fork()); |
| 229 | if (ChildPid == 0) |
| 230 | { |
| 231 | memset(&NewTimer, 0, sizeof(NewTimer)); |
| 232 | NewTimer.it_value.tv_sec = LXT_SHORT_TIMER; |
| 233 | LxtCheckResult(setitimer(ITIMER_REAL, &NewTimer, NULL)); |
| 234 | sleep(LXT_SHORT_TIMER * 2); |
| 235 | _exit(LXT_RESULT_SUCCESS); |
| 236 | } |
| 237 | |
| 238 | LxtCheckResult(LxtWaitPidPollOptions(ChildPid, SIGALRM, 0, LXT_SHORT_TIMER_WAIT_PID)); |
| 239 | |
| 240 | // |
| 241 | // Default disposition should not terminate if canceled. |
| 242 | // |
| 243 | |
| 244 | LxtCheckResult(ChildPid = fork()); |
| 245 | if (ChildPid == 0) |
| 246 | { |
| 247 | memset(&NewTimer, 0, sizeof(NewTimer)); |
| 248 | NewTimer.it_value.tv_sec = LXT_SHORT_TIMER; |
| 249 | LxtCheckResult(setitimer(ITIMER_REAL, &NewTimer, NULL)); |
| 250 | memset(&NewTimer, 0, sizeof(NewTimer)); |
| 251 | LxtCheckResult(setitimer(ITIMER_REAL, &NewTimer, NULL)); |
| 252 | sleep(LXT_SHORT_TIMER * 2); |
| 253 | _exit(LXT_RESULT_SUCCESS); |
| 254 | } |
| 255 | |
| 256 | LxtCheckResult(LxtWaitPidPollOptions(ChildPid, LXT_RESULT_SUCCESS, 0, LXT_SHORT_TIMER_WAIT_PID)); |
| 257 | |
| 258 | // |
| 259 | // Ignored should not terminate. |
| 260 | // |
| 261 | |
| 262 | LxtCheckResult(ChildPid = fork()); |
| 263 | if (ChildPid == 0) |
| 264 | { |
| 265 | memset(&Action, 0, sizeof(Action)); |
| 266 | Action.sa_handler = SIG_IGN; |
| 267 | LxtCheckErrnoZeroSuccess(sigaction(SIGALRM, &Action, NULL)); |
| 268 | memset(&NewTimer, 0, sizeof(NewTimer)); |
| 269 | NewTimer.it_value.tv_sec = LXT_SHORT_TIMER; |
| 270 | LxtCheckResult(setitimer(ITIMER_REAL, &NewTimer, NULL)); |
| 271 | sleep(LXT_SHORT_TIMER * 2); |
| 272 | _exit(LXT_RESULT_SUCCESS); |
| 273 | } |
| 274 | |
| 275 | LxtCheckResult(LxtWaitPidPollOptions(ChildPid, LXT_RESULT_SUCCESS, 0, LXT_SHORT_TIMER_WAIT_PID)); |
| 276 | |
| 277 | // |
| 278 | // Check that the signal handler is invoked within a reasonable time |
| 279 | // interval. |
| 280 | // |
| 281 | |
| 282 | LxtCheckResult(ChildPid = fork()); |
| 283 | if (ChildPid == 0) |
| 284 | { |
| 285 | memset(&Action, 0, sizeof(Action)); |
| 286 | Action.sa_handler = ITimerSignalHandler; |
| 287 | LxtCheckErrnoZeroSuccess(sigaction(SIGALRM, &Action, NULL)); |
| 288 | memset(&g_SignalTime, 0, sizeof(g_SignalTime)); |
| 289 | memset(&NewTimer, 0, sizeof(NewTimer)); |
| 290 | NewTimer.it_value.tv_sec = LXT_SHORT_TIMER; |
| 291 | LxtClockGetTime(CLOCK_REALTIME, &StartTime); |
| 292 | LxtCheckResult(setitimer(ITIMER_REAL, &NewTimer, NULL)); |
| 293 | sleep(LXT_SHORT_TIMER * 2); |
| 294 | if (g_SignalTime.tv_sec - StartTime.tv_sec != 1) |
| 295 | { |
| 296 | LxtLogError("Unexpected seconds elapsed %d", g_SignalTime.tv_sec - StartTime.tv_sec); |
| 297 | |
| 298 | _exit(1); |
| 299 | } |
| 300 | |
| 301 | _exit(LXT_RESULT_SUCCESS); |
| 302 | } |
| 303 | |
| 304 | LxtCheckResult(LxtWaitPidPollOptions(ChildPid, LXT_RESULT_SUCCESS, 0, LXT_SHORT_TIMER_WAIT_PID)); |
| 305 | |
| 306 | Result = LXT_RESULT_SUCCESS; |
| 307 | |
| 308 | ErrorExit: |
| 309 | return Result; |
| 310 | } |
| 311 | |
| 312 | int AlarmSyscall(PLXT_ARGS Args) |
| 313 | |
| 314 | /*++ |
| 315 | --*/ |
| 316 | |
| 317 | { |
| 318 | |
| 319 | struct sigaction Action; |
| 320 | int ChildPid; |
| 321 | int ExpectedWaitStatus; |
| 322 | int Result; |
| 323 | struct timespec StartTime; |
| 324 | |
| 325 | // |
| 326 | // Check the different dispositions of the SIGALRM signal and cancelling the |
| 327 | // timer. |
| 328 | // |
| 329 | |
| 330 | // |
| 331 | // Default disposition should terminate |
| 332 | // |
| 333 | |
| 334 | LxtCheckResult(ChildPid = fork()); |
| 335 | if (ChildPid == 0) |
| 336 | { |
| 337 | LxtCheckResult(alarm(LXT_SHORT_TIMER)); |
| 338 | sleep(LXT_SHORT_TIMER * 2); |
| 339 | _exit(LXT_RESULT_SUCCESS); |
| 340 | } |
| 341 | |
| 342 | LxtCheckResult(LxtWaitPidPollOptions(ChildPid, SIGALRM, 0, LXT_SHORT_TIMER_WAIT_PID)); |
| 343 | |
| 344 | // |
| 345 | // Default disposition should not terminate if canceled. |
| 346 | // |
| 347 | |
| 348 | LxtCheckResult(ChildPid = fork()); |
| 349 | if (ChildPid == 0) |
| 350 | { |
| 351 | LxtCheckResult(alarm(LXT_SHORT_TIMER)); |
| 352 | LxtCheckResult(Result = alarm(0)); |
| 353 | if (Result > LXT_SHORT_TIMER) |
| 354 | { |
| 355 | LxtLogError("Unexpected value for previously armed timer %u", Result); |
| 356 | _exit(1); |
| 357 | } |
| 358 | |
| 359 | sleep(LXT_SHORT_TIMER * 2); |
| 360 | _exit(LXT_RESULT_SUCCESS); |
| 361 | } |
| 362 | |
| 363 | LxtCheckResult(LxtWaitPidPollOptions(ChildPid, LXT_RESULT_SUCCESS, 0, LXT_SHORT_TIMER_WAIT_PID)); |
| 364 | |
| 365 | // |
| 366 | // Ignored should not terminate. |
| 367 | // |
| 368 | |
| 369 | LxtCheckResult(ChildPid = fork()); |
| 370 | if (ChildPid == 0) |
| 371 | { |
| 372 | memset(&Action, 0, sizeof(Action)); |
| 373 | Action.sa_handler = SIG_IGN; |
| 374 | LxtCheckErrnoZeroSuccess(sigaction(SIGALRM, &Action, NULL)); |
| 375 | LxtCheckResult(alarm(LXT_SHORT_TIMER)); |
| 376 | sleep(LXT_SHORT_TIMER * 2); |
| 377 | _exit(LXT_RESULT_SUCCESS); |
| 378 | } |
| 379 | |
| 380 | LxtCheckResult(LxtWaitPidPollOptions(ChildPid, LXT_RESULT_SUCCESS, 0, LXT_SHORT_TIMER_WAIT_PID)); |
| 381 | |
| 382 | // |
| 383 | // Check that the signal handler is invoked within a reasonable time |
| 384 | // interval. |
| 385 | // |
| 386 | |
| 387 | LxtCheckResult(ChildPid = fork()); |
| 388 | if (ChildPid == 0) |
| 389 | { |
| 390 | memset(&Action, 0, sizeof(Action)); |
| 391 | Action.sa_handler = ITimerSignalHandler; |
| 392 | LxtCheckErrnoZeroSuccess(sigaction(SIGALRM, &Action, NULL)); |
| 393 | memset(&g_SignalTime, 0, sizeof(g_SignalTime)); |
| 394 | LxtClockGetTime(CLOCK_REALTIME, &StartTime); |
| 395 | LxtCheckResult(alarm(LXT_SHORT_TIMER)); |
| 396 | sleep(LXT_SHORT_TIMER * 2); |
| 397 | if (g_SignalTime.tv_sec - StartTime.tv_sec != 1) |
| 398 | { |
| 399 | LxtLogError("Unexpected seconds elapsed %d", g_SignalTime.tv_sec - StartTime.tv_sec); |
| 400 | |
| 401 | _exit(1); |
| 402 | } |
| 403 | |
| 404 | _exit(LXT_RESULT_SUCCESS); |
| 405 | } |
| 406 | |
| 407 | LxtCheckResult(LxtWaitPidPollOptions(ChildPid, LXT_RESULT_SUCCESS, 0, LXT_SHORT_TIMER_WAIT_PID)); |
| 408 | |
| 409 | Result = LXT_RESULT_SUCCESS; |
| 410 | |
| 411 | ErrorExit: |
| 412 | return Result; |
| 413 | } |
| 414 | |
| 415 | void ITimerPeriodicSignalHandler(int Signal) |
| 416 | |
| 417 | /*++ |
| 418 | --*/ |
| 419 | |
| 420 | { |
| 421 | if (Signal == SIGALRM) |
| 422 | { |
| 423 | ++g_SignalCount; |
| 424 | } |
| 425 | |
| 426 | return; |
| 427 | } |
| 428 | |
| 429 | int ITimerPeriodicSignal(PLXT_ARGS Args) |
| 430 | |
| 431 | /*++ |
| 432 | --*/ |
| 433 | |
| 434 | { |
| 435 | |
| 436 | struct sigaction Action; |
| 437 | int ChildPid; |
| 438 | int ExpectedWaitStatus; |
| 439 | int Result; |
| 440 | struct itimerval NewTimer; |
| 441 | |
| 442 | // |
| 443 | // Check that the signal handler is invoked within a reasonable time |
| 444 | // interval. |
| 445 | // |
| 446 | |
| 447 | LxtCheckResult(ChildPid = fork()); |
| 448 | if (ChildPid == 0) |
| 449 | { |
| 450 | memset(&Action, 0, sizeof(Action)); |
| 451 | Action.sa_handler = ITimerPeriodicSignalHandler; |
| 452 | LxtCheckErrnoZeroSuccess(sigaction(SIGALRM, &Action, NULL)); |
| 453 | memset(&g_SignalCount, 0, sizeof(g_SignalCount)); |
| 454 | memset(&NewTimer, 0, sizeof(NewTimer)); |
| 455 | NewTimer.it_value.tv_sec = LXT_SHORT_TIMER; |
| 456 | NewTimer.it_interval.tv_usec = LXT_SHORT_TIMER_US; |
| 457 | LxtCheckResult(setitimer(ITIMER_REAL, &NewTimer, NULL)); |
| 458 | while (sleep(LXT_SHORT_TIMER * 2) != LXT_SHORT_TIMER * 2) |
| 459 | { |
| 460 | LxtLogInfo("Periodic timer detected: %d", g_SignalCount); |
| 461 | if (g_SignalCount >= 3) |
| 462 | { |
| 463 | break; |
| 464 | } |
| 465 | } |
| 466 | |
| 467 | LxtLogInfo("Periodic timer count: %d", g_SignalCount); |
| 468 | _exit(LXT_RESULT_SUCCESS); |
| 469 | } |
| 470 | |
| 471 | LxtCheckResult(LxtWaitPidPollOptions(ChildPid, LXT_RESULT_SUCCESS, 0, LXT_SHORT_TIMER_WAIT_PID)); |
| 472 | |
| 473 | Result = LXT_RESULT_SUCCESS; |
| 474 | |
| 475 | ErrorExit: |
| 476 | return Result; |
| 477 | } |
| 478 | |
| 479 | int NanosleepInvalidParam(PLXT_ARGS Args) |
| 480 | |
| 481 | { |
| 482 | |
| 483 | struct timespec SleepDuration; |
| 484 | int Result; |
| 485 | |
| 486 | SleepDuration.tv_sec = 0; |
| 487 | SleepDuration.tv_nsec = 999999999; |
| 488 | LxtCheckErrno(nanosleep(&SleepDuration, NULL)); |
| 489 | |
| 490 | // |
| 491 | // N.B. The clock_nanosleep system call returns error codes on failure |
| 492 | // instead of setting errno. |
| 493 | // |
| 494 | |
| 495 | LxtCheckEqual(0, clock_nanosleep(CLOCK_MONOTONIC, 0, &SleepDuration, NULL), "%d"); |
| 496 | |
| 497 | SleepDuration.tv_nsec += 1; |
| 498 | LxtCheckErrnoFailure(nanosleep(&SleepDuration, NULL), EINVAL); |
| 499 | |
| 500 | // |
| 501 | // N.B. The clock_nanosleep system call returns error codes on failure |
| 502 | // instead of setting errno. |
| 503 | // |
| 504 | |
| 505 | LxtCheckEqual(EINVAL, clock_nanosleep(CLOCK_MONOTONIC, 0, &SleepDuration, NULL), "%d"); |
| 506 | |
| 507 | ErrorExit: |
| 508 | return Result; |
| 509 | } |
| 510 | |
| 511 | void TimerCreateHandler(int Signal, siginfo_t* SignalInfo, void* SignalContext) |
| 512 | { |
| 513 | |
| 514 | int Overrun; |
| 515 | int Result; |
| 516 | timer_t TimerId; |
| 517 | |
| 518 | LxtLogInfo("Caught signal %d", Signal); |
| 519 | |
| 520 | TimerId = *((timer_t*)SignalInfo->si_value.sival_ptr); |
| 521 | LxtLogInfo("SignalInfo->si_value.sival_ptr = %p", SignalInfo->si_value.sival_ptr); |
| 522 | LxtLogInfo("*SignalInfo->si_value.sival_ptr = %d", (long)TimerId); |
| 523 | LxtLogInfo("SignalInfo->si_overrun count = %d", SignalInfo->si_overrun); |
| 524 | LxtCheckResult(Overrun = LxtTimer_GetOverrun(TimerId)); |
| 525 | LxtLogInfo("timer_getoverrun count = %d", Overrun); |
| 526 | LxtCheckEqual(Overrun, SignalInfo->si_overrun, "%d"); |
| 527 | LxtLogInfo("SignalInfo->si_timerid = %d", SignalInfo->_sifields._timer); |
| 528 | |
| 529 | ErrorExit: |
| 530 | signal(Signal, SIG_IGN); |
| 531 | return; |
| 532 | } |
| 533 | |
| 534 | void* TimerCreateSyscallThread(void* Parameter) |
| 535 | |
| 536 | /*++ |
| 537 | |
| 538 | Routine Description: |
| 539 | |
| 540 | This routine is the timer create thread callback. |
| 541 | |
| 542 | Arguments: |
| 543 | |
| 544 | Parameter - Supplies the parameter. |
| 545 | |
| 546 | Return Value: |
| 547 | |
| 548 | 0 on success, -1 on failure. |
| 549 | |
| 550 | --*/ |
| 551 | |
| 552 | { |
| 553 | |
| 554 | timer_t TimerId; |
| 555 | int Result; |
| 556 | struct itimerspec TimerSpec; |
| 557 | |
| 558 | // |
| 559 | // Query the timer and validate that it is not set. |
| 560 | // |
| 561 | |
| 562 | TimerId = (timer_t)Parameter; |
| 563 | LxtCheckResult(LxtTimer_GetTime(TimerId, &TimerSpec)); |
| 564 | LxtCheckEqual(TimerSpec.it_value.tv_sec, 0, "%lx"); |
| 565 | LxtCheckEqual(TimerSpec.it_value.tv_nsec, 0, "%lx"); |
| 566 | LxtCheckEqual(TimerSpec.it_interval.tv_sec, 0, "%lx"); |
| 567 | LxtCheckEqual(TimerSpec.it_interval.tv_nsec, 0, "%lx"); |
| 568 | |
| 569 | ErrorExit: |
| 570 | return (void*)(long)Result; |
| 571 | } |
| 572 | |
| 573 | int TimerCreateSyscall(PLXT_ARGS Args) |
| 574 | |
| 575 | { |
| 576 | |
| 577 | struct itimerspec OldTimerSpec; |
| 578 | int Overrun; |
| 579 | int Result; |
| 580 | struct sigaction SigAction; |
| 581 | int Signal; |
| 582 | int SignalToTest; |
| 583 | struct sigevent SigEvent; |
| 584 | siginfo_t SignalInfo; |
| 585 | sigset_t SigMask; |
| 586 | pthread_t Thread; |
| 587 | void* ThreadReturn; |
| 588 | timer_t TimerId; |
| 589 | struct itimerspec TimerSpec; |
| 590 | |
| 591 | SignalToTest = SIGRTMIN; |
| 592 | TimerId = (timer_t)-1; |
| 593 | |
| 594 | // |
| 595 | // Create signal handler and temporarily block signal delivery. |
| 596 | // |
| 597 | |
| 598 | SigAction.sa_flags = SA_SIGINFO; |
| 599 | SigAction.sa_sigaction = TimerCreateHandler; |
| 600 | sigemptyset(&SigAction.sa_mask); |
| 601 | LxtCheckResult(sigaction(SignalToTest, &SigAction, NULL)); |
| 602 | |
| 603 | sigemptyset(&SigMask); |
| 604 | sigaddset(&SigMask, SignalToTest); |
| 605 | LxtCheckResult(sigprocmask(SIG_SETMASK, &SigMask, NULL)); |
| 606 | |
| 607 | // |
| 608 | // Create the timer. |
| 609 | // |
| 610 | |
| 611 | SigEvent.sigev_value.sival_ptr = &TimerId; |
| 612 | SigEvent.sigev_signo = SignalToTest; |
| 613 | SigEvent.sigev_notify = SIGEV_SIGNAL; |
| 614 | LxtCheckResult(LxtTimer_Create(CLOCK_REALTIME, &SigEvent, &TimerId)); |
| 615 | LxtLogInfo("create_timer TimerId = %d", TimerId); |
| 616 | |
| 617 | // |
| 618 | // Set the timer - verify that the initial timer state is all zeros. |
| 619 | // |
| 620 | |
| 621 | memset(&TimerSpec, 0, sizeof(TimerSpec)); |
| 622 | TimerSpec.it_value.tv_sec = 1; |
| 623 | LxtCheckResult(LxtTimer_SetTime(TimerId, 0, &TimerSpec, &OldTimerSpec)); |
| 624 | LxtCheckEqual(OldTimerSpec.it_value.tv_sec, 0, "%lx"); |
| 625 | LxtCheckEqual(OldTimerSpec.it_value.tv_nsec, 0, "%lx"); |
| 626 | LxtCheckEqual(OldTimerSpec.it_interval.tv_sec, 0, "%lx"); |
| 627 | LxtCheckEqual(OldTimerSpec.it_interval.tv_nsec, 0, "%lx"); |
| 628 | |
| 629 | // |
| 630 | // Query the time of the timer that was just created. |
| 631 | // |
| 632 | |
| 633 | LxtCheckResult(LxtTimer_GetTime(TimerId, &OldTimerSpec)); |
| 634 | LxtLogInfo("OldTimerSpec.it_value.tv_sec = 0x%lx", OldTimerSpec.it_value.tv_sec); |
| 635 | LxtLogInfo("OldTimerSpec.it_value.tv_nsec = 0x%lx", OldTimerSpec.it_value.tv_nsec); |
| 636 | LxtLogInfo("OldTimerSpec.it_interval.tv_sec = 0x%lx", OldTimerSpec.it_interval.tv_sec); |
| 637 | LxtLogInfo("OldTimerSpec.it_interval.tv_nsec = 0x%lx", OldTimerSpec.it_interval.tv_nsec); |
| 638 | if ((OldTimerSpec.it_value.tv_sec > 1) || ((OldTimerSpec.it_value.tv_sec < 1) && (OldTimerSpec.it_value.tv_nsec == 0))) |
| 639 | { |
| 640 | |
| 641 | Result = LXT_RESULT_FAILURE; |
| 642 | LxtLogError("timer_gettime returned tv_sec %lx tv_nsec %lx", OldTimerSpec.it_value.tv_sec, OldTimerSpec.it_value.tv_nsec); |
| 643 | |
| 644 | goto ErrorExit; |
| 645 | } |
| 646 | |
| 647 | LxtCheckEqual(OldTimerSpec.it_interval.tv_sec, 0, "%lx"); |
| 648 | LxtCheckEqual(OldTimerSpec.it_interval.tv_nsec, 0, "%lx"); |
| 649 | |
| 650 | // |
| 651 | // Unblock signal delivery. |
| 652 | // |
| 653 | |
| 654 | LxtCheckResult(sigprocmask(SIG_UNBLOCK, &SigMask, NULL)); |
| 655 | |
| 656 | // |
| 657 | // Wait for the signal to be delivered. |
| 658 | // |
| 659 | |
| 660 | LxtCheckErrno(Signal = sigtimedwait(&SigMask, &SignalInfo, NULL)); |
| 661 | LxtCheckEqual(Signal, SignalToTest, "%d"); |
| 662 | LxtCheckEqual(SignalInfo.si_signo, SignalToTest, "%d"); |
| 663 | LxtCheckEqual(SignalInfo.si_code, SI_TIMER, "%d"); |
| 664 | LxtLogInfo("SignalInfo->si_value.sival_ptr = %p", SignalInfo.si_value.sival_ptr); |
| 665 | LxtLogInfo("SignalInfo->si_value.sival_int = %d", SignalInfo.si_value.sival_int); |
| 666 | LxtLogInfo("SignalInfo->si_overrun = %d", SignalInfo.si_overrun); |
| 667 | LxtCheckResult(Overrun = LxtTimer_GetOverrun(TimerId)); |
| 668 | LxtLogInfo("timer_getoverrun count = %d", Overrun); |
| 669 | LxtCheckEqual(Overrun, SignalInfo.si_overrun, "%d"); |
| 670 | LxtLogInfo("SignalInfo->si_timerid = %d", SignalInfo._sifields._timer); |
| 671 | LxtCheckErrnoZeroSuccess(sigpending(&SigMask)); |
| 672 | |
| 673 | // |
| 674 | // Create a pthread and ensure that it can see the timer. |
| 675 | // |
| 676 | |
| 677 | LxtCheckResultError(pthread_create(&Thread, NULL, TimerCreateSyscallThread, (void*)TimerId)); |
| 678 | |
| 679 | pthread_join(Thread, &ThreadReturn); |
| 680 | LxtCheckEqual((long)ThreadReturn, 0L, "%ld"); |
| 681 | |
| 682 | // |
| 683 | // Delete the timer, delete twice to verify the second deletion fails. |
| 684 | // |
| 685 | |
| 686 | LxtCheckResult(LxtTimer_Delete(TimerId)); |
| 687 | LxtCheckErrnoFailure(LxtTimer_Delete(TimerId), EINVAL); |
| 688 | TimerId = LXT_INVALID_TIMER_ID; |
| 689 | |
| 690 | Result = LXT_RESULT_SUCCESS; |
| 691 | |
| 692 | ErrorExit: |
| 693 | if (TimerId != LXT_INVALID_TIMER_ID) |
| 694 | { |
| 695 | LxtTimer_Delete(TimerId); |
| 696 | } |
| 697 | |
| 698 | return Result; |
| 699 | } |
| 700 | |
| 701 | int TimerCreateInvalidParam(PLXT_ARGS Args) |
| 702 | |
| 703 | { |
| 704 | |
| 705 | pid_t ChildPid; |
| 706 | int Index; |
| 707 | struct itimerspec OldTimerSpec; |
| 708 | struct rlimit ResourceLimit = {0}; |
| 709 | int Result; |
| 710 | struct sigevent SigEvent; |
| 711 | sigset_t SigMask; |
| 712 | int Status; |
| 713 | timer_t TimerId; |
| 714 | timer_t* TimerIdArray; |
| 715 | struct itimerspec TimerSpec; |
| 716 | |
| 717 | ChildPid = -1; |
| 718 | TimerId = LXT_INVALID_TIMER_ID; |
| 719 | TimerIdArray = NULL; |
| 720 | |
| 721 | // |
| 722 | // timer_create invalid user buffers. |
| 723 | // |
| 724 | |
| 725 | SigEvent.sigev_value.sival_ptr = &TimerId; |
| 726 | SigEvent.sigev_notify = SIGEV_SIGNAL; |
| 727 | SigEvent.sigev_signo = SIGRTMIN; |
| 728 | LxtCheckErrnoFailure(LxtTimer_Create(CLOCK_REALTIME, -1, &TimerId), EFAULT); |
| 729 | LxtCheckErrnoFailure(LxtTimer_Create(CLOCK_REALTIME, &SigEvent, NULL), EFAULT); |
| 730 | LxtCheckErrnoFailure(LxtTimer_Create(CLOCK_REALTIME, &SigEvent, -1), EFAULT); |
| 731 | |
| 732 | // |
| 733 | // timer_create invalid clock id's. |
| 734 | // |
| 735 | |
| 736 | LxtCheckErrnoFailure(LxtTimer_Create(CLOCK_MONOTONIC_RAW, &SigEvent, &TimerId), ENOTSUP); |
| 737 | LxtCheckErrnoFailure(LxtTimer_Create(CLOCK_REALTIME_COARSE, &SigEvent, &TimerId), ENOTSUP); |
| 738 | LxtCheckErrnoFailure(LxtTimer_Create(CLOCK_MONOTONIC_COARSE, &SigEvent, &TimerId), ENOTSUP); |
| 739 | LxtCheckErrnoFailure(LxtTimer_Create(-1, &SigEvent, &TimerId), EINVAL); |
| 740 | |
| 741 | // |
| 742 | // timer_create invalid sigevent structures. |
| 743 | // |
| 744 | |
| 745 | // |
| 746 | // Invalid notify methods. |
| 747 | // |
| 748 | |
| 749 | SigEvent.sigev_notify = 5; |
| 750 | LxtCheckErrnoFailure(LxtTimer_Create(CLOCK_REALTIME, &SigEvent, &TimerId), EINVAL); |
| 751 | SigEvent.sigev_notify = -1; |
| 752 | LxtCheckErrnoFailure(LxtTimer_Create(CLOCK_REALTIME, &SigEvent, &TimerId), EINVAL); |
| 753 | |
| 754 | // |
| 755 | // Invalid signal numbers. |
| 756 | // |
| 757 | |
| 758 | SigEvent.sigev_notify = SIGEV_SIGNAL; |
| 759 | SigEvent.sigev_signo = 0; |
| 760 | LxtCheckErrnoFailure(LxtTimer_Create(CLOCK_REALTIME, &SigEvent, &TimerId), EINVAL); |
| 761 | SigEvent.sigev_signo = 65; |
| 762 | LxtCheckErrnoFailure(LxtTimer_Create(CLOCK_REALTIME, &SigEvent, &TimerId), EINVAL); |
| 763 | SigEvent.sigev_signo = -1; |
| 764 | LxtCheckErrnoFailure(LxtTimer_Create(CLOCK_REALTIME, &SigEvent, &TimerId), EINVAL); |
| 765 | |
| 766 | // |
| 767 | // N.B. timer_create with a NULL SigEvent argument succeeds. |
| 768 | // |
| 769 | |
| 770 | TimerId = LXT_INVALID_TIMER_ID; |
| 771 | LxtCheckResult(LxtTimer_Create(CLOCK_REALTIME, NULL, &TimerId)); |
| 772 | LxtLogInfo("create_timer TimerId = %d", TimerId); |
| 773 | |
| 774 | // |
| 775 | // timer_settime invalid user buffers. |
| 776 | // |
| 777 | |
| 778 | LxtCheckErrnoFailure(LxtTimer_SetTime(TimerId, 0, NULL, &OldTimerSpec), EINVAL); |
| 779 | LxtCheckErrnoFailure(LxtTimer_SetTime(TimerId, 0, -1, &OldTimerSpec), EFAULT); |
| 780 | |
| 781 | // |
| 782 | // N.B. timer_settime with NULL old value succeeds. |
| 783 | // |
| 784 | |
| 785 | TimerSpec.it_value.tv_sec = 1; |
| 786 | TimerSpec.it_value.tv_nsec = 0; |
| 787 | TimerSpec.it_interval.tv_sec = 1; |
| 788 | TimerSpec.it_interval.tv_nsec = 1; |
| 789 | LxtCheckResult(LxtTimer_SetTime(TimerId, 0, &TimerSpec, NULL)); |
| 790 | |
| 791 | // |
| 792 | // N.B. Even though the timer_settime call fails with an invalid buffer for |
| 793 | // old value, the timer is still modified. |
| 794 | // |
| 795 | |
| 796 | TimerSpec.it_interval.tv_sec = 4; |
| 797 | TimerSpec.it_interval.tv_nsec = 4; |
| 798 | LxtCheckErrnoFailure(LxtTimer_SetTime(TimerId, 0, &TimerSpec, -1), EFAULT); |
| 799 | OldTimerSpec = TimerSpec; |
| 800 | TimerSpec.it_interval.tv_sec = 5; |
| 801 | TimerSpec.it_interval.tv_nsec = 5; |
| 802 | LxtCheckResult(LxtTimer_SetTime(TimerId, 0, &TimerSpec, &OldTimerSpec)); |
| 803 | LxtCheckEqual(OldTimerSpec.it_interval.tv_sec, 4, "%lx"); |
| 804 | LxtCheckEqual(OldTimerSpec.it_interval.tv_nsec, 4, "%lx"); |
| 805 | |
| 806 | // |
| 807 | // Invalid timerspec values. |
| 808 | // |
| 809 | |
| 810 | memset(&TimerSpec, 0, sizeof(TimerSpec)); |
| 811 | TimerSpec.it_value.tv_sec = -1; |
| 812 | LxtCheckErrnoFailure(LxtTimer_SetTime(TimerId, 0, &TimerSpec, NULL), EINVAL); |
| 813 | memset(&TimerSpec, 0, sizeof(TimerSpec)); |
| 814 | TimerSpec.it_value.tv_nsec = 999999999 + 1; |
| 815 | LxtCheckErrnoFailure(LxtTimer_SetTime(TimerId, 0, &TimerSpec, NULL), EINVAL); |
| 816 | memset(&TimerSpec, 0, sizeof(TimerSpec)); |
| 817 | TimerSpec.it_interval.tv_sec = -1; |
| 818 | LxtCheckErrnoFailure(LxtTimer_SetTime(TimerId, 0, &TimerSpec, NULL), EINVAL); |
| 819 | memset(&TimerSpec, 0, sizeof(TimerSpec)); |
| 820 | TimerSpec.it_interval.tv_nsec = 999999999 + 1; |
| 821 | LxtCheckErrnoFailure(LxtTimer_SetTime(TimerId, 0, &TimerSpec, NULL), EINVAL); |
| 822 | |
| 823 | // |
| 824 | // timer_getoverrun and timer_gettime invalid param. |
| 825 | // |
| 826 | |
| 827 | LxtCheckErrnoFailure(LxtTimer_GetOverrun(-1), EINVAL); |
| 828 | LxtCheckErrnoFailure(LxtTimer_GetTime(-1, &TimerSpec), EINVAL); |
| 829 | LxtCheckErrnoFailure(LxtTimer_GetTime(TimerId, NULL), EFAULT); |
| 830 | LxtCheckErrnoFailure(LxtTimer_GetTime(TimerId, -1), EFAULT); |
| 831 | LxtCheckResult(LxtTimer_Delete(TimerId)); |
| 832 | TimerId = LXT_INVALID_TIMER_ID; |
| 833 | |
| 834 | // |
| 835 | // Query how many timers can be created, ensure that we are able to create |
| 836 | // exactly that many timers. |
| 837 | // |
| 838 | |
| 839 | LxtCheckResult(getrlimit(RLIMIT_SIGPENDING, &ResourceLimit)); |
| 840 | LxtLogInfo("getrlimit(RLIMIT_SIGPENDING) Current %lu, Max %lu", ResourceLimit.rlim_cur, ResourceLimit.rlim_max); |
| 841 | |
| 842 | TimerIdArray = malloc(ResourceLimit.rlim_cur * sizeof(timer_t)); |
| 843 | if (TimerIdArray == NULL) |
| 844 | { |
| 845 | goto ErrorExit; |
| 846 | } |
| 847 | |
| 848 | memset(TimerIdArray, 0xff, (ResourceLimit.rlim_cur * sizeof(timer_t))); |
| 849 | for (Index = 0; Index < ResourceLimit.rlim_cur; Index += 1) |
| 850 | { |
| 851 | LxtCheckResult(LxtTimer_Create(CLOCK_REALTIME, NULL, &TimerIdArray[Index])); |
| 852 | } |
| 853 | |
| 854 | // |
| 855 | // Create one more timer, this should fail. Delete one and create another. |
| 856 | // |
| 857 | |
| 858 | LxtCheckErrnoFailure(LxtTimer_Create(CLOCK_REALTIME, NULL, &TimerId), EAGAIN); |
| 859 | LxtCheckResult(LxtTimer_Delete(TimerIdArray[0])); |
| 860 | TimerIdArray[0] = LXT_INVALID_TIMER_ID; |
| 861 | LxtCheckResult(LxtTimer_Create(CLOCK_REALTIME, NULL, &TimerId)); |
| 862 | LxtCheckResult(LxtTimer_Delete(TimerId)); |
| 863 | TimerId = LXT_INVALID_TIMER_ID; |
| 864 | |
| 865 | // |
| 866 | // Set the timer limit to zero and attempt to create a new timer. |
| 867 | // |
| 868 | |
| 869 | LXT_SYNCHRONIZATION_POINT_START(); |
| 870 | LxtCheckErrno(ChildPid = fork()); |
| 871 | if (ChildPid == 0) |
| 872 | { |
| 873 | ResourceLimit.rlim_cur = 0; |
| 874 | LxtCheckResult(setrlimit(RLIMIT_SIGPENDING, &ResourceLimit)); |
| 875 | LxtCheckErrnoFailure(LxtTimer_Create(CLOCK_REALTIME, NULL, &TimerId), EAGAIN); |
| 876 | LXT_SYNCHRONIZATION_POINT(); |
| 877 | goto ErrorExit; |
| 878 | } |
| 879 | |
| 880 | LXT_SYNCHRONIZATION_POINT(); |
| 881 | Result = LXT_RESULT_SUCCESS; |
| 882 | |
| 883 | ErrorExit: |
| 884 | if (TimerId != LXT_INVALID_TIMER_ID) |
| 885 | { |
| 886 | LxtTimer_Delete(TimerId); |
| 887 | } |
| 888 | |
| 889 | if (TimerIdArray != NULL) |
| 890 | { |
| 891 | for (Index = 0; Index < ResourceLimit.rlim_max; Index += 1) |
| 892 | { |
| 893 | if (TimerIdArray[Index] != LXT_INVALID_TIMER_ID) |
| 894 | { |
| 895 | LxtTimer_Delete(TimerIdArray[Index]); |
| 896 | } |
| 897 | } |
| 898 | |
| 899 | free(TimerIdArray); |
| 900 | } |
| 901 | |
| 902 | LXT_SYNCHRONIZATION_POINT_END(); |
| 903 | return Result; |
| 904 | } |
| 905 | |
| 906 | typedef struct _LXSS_BYTE_ALIGNED_TIMESPEC |
| 907 | { |
| 908 | char Padding; |
| 909 | char Buffer[10]; |
| 910 | } LXSS_BYTE_ALIGNED_TIMESPEC; |
| 911 | |
| 912 | int ClockGetTimeAlignment(PLXT_ARGS Args) |
| 913 | |
| 914 | { |
| 915 | int Result; |
| 916 | LXSS_BYTE_ALIGNED_TIMESPEC Timespec; |
| 917 | |
| 918 | LxtLogInfo("calling clock_gettime with user buffer %p", &Timespec.Buffer); |
| 919 | LxtCheckErrnoZeroSuccess(clock_gettime(CLOCK_MONOTONIC, (struct timespec*)&Timespec.Buffer)); |
| 920 | |
| 921 | ErrorExit: |
| 922 | return Result; |
| 923 | } |