Improve cancellations, randomness, and time

- Exhaustively document cancellation points
- Rename SIGCANCEL to SIGTHR just like BSDs
- Further improve POSIX thread cancellations
- Ensure asynchronous cancellations work correctly
- Elevate the quality of getrandom() and getentropy()
- Make futexes cancel correctly on OpenBSD 6.x and 7.x
- Add reboot.com and shutdown.com to examples directory
- Remove underscore prefix from awesome timespec_*() APIs
- Create assertions that help verify our cancellation points
- Remove bad timespec APIs (cmp generalizes eq/ne/gt/gte/lt/lte)
This commit is contained in:
Justine Tunney 2022-11-05 19:49:41 -07:00
parent 0d7c265392
commit 3f0bcdc3ef
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
173 changed files with 1599 additions and 782 deletions

View file

@ -33,24 +33,24 @@ textwindows int sys_clock_nanosleep_nt(int clock, int flags,
abs = *req;
for (;;) {
if (sys_clock_gettime_nt(clock, &now)) return -1;
if (_timespec_gte(now, abs)) return 0;
if (timespec_cmp(now, abs) >= 0) return 0;
if (_check_interrupts(false, g_fds.p)) return -1;
SleepEx(MIN(__SIG_POLLING_INTERVAL_MS,
_timespec_tomillis(_timespec_sub(abs, now))),
timespec_tomillis(timespec_sub(abs, now))),
false);
}
} else {
if (sys_clock_gettime_nt(clock, &now)) return -1;
abs = _timespec_add(now, *req);
abs = timespec_add(now, *req);
for (;;) {
sys_clock_gettime_nt(clock, &now);
if (_timespec_gte(now, abs)) return 0;
if (timespec_cmp(now, abs) >= 0) return 0;
if (_check_interrupts(false, g_fds.p)) {
if (rem) *rem = _timespec_sub(abs, now);
if (rem) *rem = timespec_sub(abs, now);
return -1;
}
SleepEx(MIN(__SIG_POLLING_INTERVAL_MS,
_timespec_tomillis(_timespec_sub(abs, now))),
timespec_tomillis(timespec_sub(abs, now))),
false);
}
}