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Kernel: Add CLOCK_REALTIME support to the TimerQueue

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This allows us to use blocking timeouts with either monotonic or
real time for all blockers. Which means that clock_nanosleep()
now also supports CLOCK_REALTIME.

Also, switch alarm() to use CLOCK_REALTIME as per specification.
This commit is contained in:
Tom 2020-12-01 16:53:47 -07:00 • committed by Andreas Kling
parent 4c1e27ec65
commit 12cf6f8650
9 changed files with 182 additions and 97 deletions
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4
Kernel/Syscalls/alarm.cpp
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@ -46,9 +46,9 @@ unsigned Process::sys$alarm(unsigned seconds)
}
if (seconds > 0) {
auto deadline = TimeManagement::the().monotonic_time(); // TODO: should be using CLOCK_REALTIME
auto deadline = TimeManagement::the().current_time(CLOCK_REALTIME).value();
timespec_add(deadline, { seconds, 0 }, deadline);
m_alarm_timer = TimerQueue::the().add_timer_without_id(deadline, [this]() {
m_alarm_timer = TimerQueue::the().add_timer_without_id(CLOCK_REALTIME, deadline, [this]() {
(void)send_signal(SIGALRM, nullptr);
});
}