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What happens when millis() overflows? #45
Description
I'm developing opens source project to sustentable agriculture.
I want to know what happens when millis() overflows...
If I need to remove all threads -> reset millis() -> addition all threads back to ThreadController in main code.
Thank you and congratulation for awesome library.
Activity
gregkrsak commentedon Feb 1, 2020
I found this, after a quick Google search:
https://www.norwegiancreations.com/2018/10/arduino-tutorial-avoiding-the-overflow-issue-when-using-millis-and-micros/
julioj4pa commentedon Feb 1, 2020
@gregkrsak thank you for reply.
My doubt is I need to controll it in my main code?
I'm a newbie, sorry.
Library code....
bool Thread::shouldRun(unsigned long time){
// If the "sign" bit is set the signed difference would be negative
bool time_remaining = (time - _cached_next_run) & 0x80000000;
}
julioj4pa commentedon Feb 1, 2020
I think it doesn't have any problem because.
_cached_next_run is unsigned long too.
So when
void Thread::runned(unsigned long time){
// Saves last_run
last_run = time;
}
_cached_next_run restarts too.