Attachment 221412 Details for Bug 252539 – reproducer

reproducer

main.c (text/plain), 1.42 KB, created by Jan Kokemüller on 2021-01-09 09:41:08 UTC

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Creator: Jan Kokemüller

Created: 2021-01-09 09:41:08 UTC

Size: 1.42 KB

patch

obsolete

>#include <sys/event.h>
>
>#include <err.h>
>#include <stdio.h>
>#include <time.h>
>
>#define REQUIRE(x)                                             \
>	do {                                                   \
>		if (!(x)) {                                    \
>			errx(1, "error in line %d", __LINE__); \
>		}                                              \
>	} while (0);
>
>int
>main()
>{
>	int kq = kqueue();
>	REQUIRE(kq >= 0);
>
>#define SLEEP_NSEC (1900010000)
>
>	struct kevent kev;
>	EV_SET(&kev, 0, EVFILT_TIMER, EV_ADD | EV_ONESHOT, /**/
>	    NOTE_NSECONDS, SLEEP_NSEC, 0);
>
>	REQUIRE(kevent(kq, &kev, 1, NULL, 0, NULL) == 0);
>
>	struct timespec ts_begin;
>	REQUIRE(clock_gettime(CLOCK_MONOTONIC, &ts_begin) == 0);
>
>	REQUIRE(kevent(kq, NULL, 0, &kev, 1, NULL) == 1);
>
>	struct timespec ts_end;
>	REQUIRE(clock_gettime(CLOCK_MONOTONIC, &ts_end) == 0);
>
>	struct timespec ts_duration = {
>		.tv_sec = ts_end.tv_sec - ts_begin.tv_sec,
>		.tv_nsec = ts_end.tv_nsec - ts_begin.tv_nsec,
>	};
>	if (ts_duration.tv_nsec < 0) {
>		--ts_duration.tv_sec;
>		ts_duration.tv_nsec += 1000000000;
>	}
>
>	fprintf(stderr, "sleep requested: %lld.%09lld\n",
>	    (long long)SLEEP_NSEC / 1000000000,
>	    (long long)SLEEP_NSEC % 1000000000);
>	fprintf(stderr, "actual duration: %lld.%09lld\n",
>	    (long long)ts_duration.tv_sec, /**/
>	    (long long)ts_duration.tv_nsec);
>
>	long long duration_ns = 1000000000 * ts_duration.tv_sec +
>	    ts_duration.tv_nsec;
>	REQUIRE(duration_ns >= SLEEP_NSEC);
>}

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Attachments on bug 252539: 221412 | 221413