Intel CPUs after Core Duo support two Model-Specific registers called IA32_MPERF and IA32_APERF. MPERF counts at the maximum frequency the CPU supports, while APERF counts at the actual current frequency. The actual frequency is given by: You can read them with this flow ; read MPERF mov ecx, 0xe7 rdmsr mov mperf_var_lo, eax mov mperf_var_hi, … Read more
Lua doesn’t provide a standard sleep function, but there are several ways to implement one, see Sleep Function for detail. For Linux, this may be the easiest one: function sleep(n) os.execute(“sleep ” .. tonumber(n)) end In Windows, you can use ping: function sleep(n) if n > 0 then os.execute(“ping -n ” .. tonumber(n+1) .. ” … Read more
These two intrinsics report different types of time. system_clock reports “wall time” or elapsed time. cpu_time reports time used by the CPU. On a multi-tasking machine these could be very different, e.g., if your process shared the CPU equally with three other processes and therefore received 25% of the CPU and used 10 cpu seconds, … Read more
A simple option is to manually keep track of time using millis(). You would use two variables: one to store elapsed time one to store the wait/delay time you need In the draw() method you would check if the difference between the current time (in millis.) and the previously stored time is greater(or equal) to … Read more
Here is an example using Timer.periodic : Countdown starts from 10 to 0 on button click : import ‘dart:async’; […] Timer _timer; int _start = 10; void startTimer() { const oneSec = const Duration(seconds: 1); _timer = new Timer.periodic( oneSec, (Timer timer) { if (_start == 0) { setState(() { timer.cancel(); }); } else { … Read more