What is mach_absolute_time based on on iPhone

Question

I use this code to keep track of last reboot:

+ (float) secondsSinceLastReboot{
     return ((float)(mach_absolute_time())) * ((float)timebase.numer) / ((flo         


        

Answer 1

If you don't care a lot about computation time you can use simple Obj-C class from Foundation

NSTimeInterval systemUptime = [[NSProcessInfo processInfo] systemUptime];