Timer *
TimerQueue::Pop(std::chrono::steady_clock::time_point now) noexcept
{
auto t = timers.begin();
if (t != timers.end() && t->IsDue(now)) {
Timer *timer = t->timer;
timers.erase(t);
return timer;
} else
return nullptr;
}
Timer *
TimerQueue::Pop(uint64_t now_us)
{
Timer *timer = nullptr;
auto t = timers.begin();
if (t != timers.end() && t->IsDue(now_us)) {
timer = t->timer;
if (timer->IsActive()) {
/* not cancelled by another thread */
Add(*timer, t->due_us + timer->GetPeriod()*1000);
} else {
timer = nullptr;
}
timers.erase(t);
}
return timer;
}
