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Kernel: Use TimerQueue for SIGALRM
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parent
601a688b6f
commit
4c1e27ec65
6 changed files with 43 additions and 27 deletions
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@ -33,15 +33,25 @@ unsigned Process::sys$alarm(unsigned seconds)
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{
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REQUIRE_PROMISE(stdio);
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unsigned previous_alarm_remaining = 0;
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auto uptime = TimeManagement::the().uptime_ms();
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if (m_alarm_deadline && m_alarm_deadline > uptime) {
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previous_alarm_remaining = m_alarm_deadline - uptime;
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if (auto alarm_timer = move(m_alarm_timer)) {
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if (TimerQueue::the().cancel_timer(*alarm_timer)) {
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// The timer hasn't fired. Round up the remaining time (if any)
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timespec remaining;
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timespec_add(alarm_timer->remaining(), { 0, 1000000000 - 1 }, remaining);
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previous_alarm_remaining = remaining.tv_sec;
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}
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// We had an existing alarm, must return a non-zero value here!
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if (previous_alarm_remaining == 0)
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previous_alarm_remaining = 1;
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}
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if (!seconds) {
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m_alarm_deadline = 0;
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return previous_alarm_remaining;
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if (seconds > 0) {
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auto deadline = TimeManagement::the().monotonic_time(); // TODO: should be using CLOCK_REALTIME
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timespec_add(deadline, { seconds, 0 }, deadline);
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m_alarm_timer = TimerQueue::the().add_timer_without_id(deadline, [this]() {
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(void)send_signal(SIGALRM, nullptr);
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});
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}
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m_alarm_deadline = uptime + seconds * 1000;
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return previous_alarm_remaining;
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}
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