µOS++ (micro OS plus plus) / Feature Requests / #19 add timers

#19 add timers

Milestone: 1.0

Status: accepted

Owner: Liviu Ionescu (ilg)

Labels: None

Updated: 2013-07-29

Created: 2013-07-10

Creator: Liviu Ionescu (ilg)

Private: No

define portable timers, probably similar to those in the first edition (ticks, seconds, rtc).

then implement them with setitimer() on POSIX.

Q: is it reasonable to use 1 ms timer resolution on OS X/Ubuntu/Cygwin?

Discussion

Liviu Ionescu (ilg) - 2013-07-17

TimerTicks (based on TimerBase) implemented.

POSIX implementation prepared, but not completed.

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- Liviu Ionescu (ilg) - 2013-07-29
  
  POSIX implementation functional, two tests (sleep and sleepstress) ok.
  
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Liviu Ionescu (ilg) - 2013-07-29

Q: is it reasonable to use 1 ms timer resolution on OS X/Ubuntu/Cygwin?

A: Generally yes.
On OS X more than 10K signals/second can be processed.
On Ubuntu running in a virtual machine a few thousands are ok.
On Fedora the 1000/sec are ok, but with some delays.

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