WinApi-High_Resolution_Timer

This is a wrapper for the windows API with a simple example. It measure the shortest measurable time and wait 1s.

Chrono Class

winapi.h/.cpp This file contains the winapi_timer and winapi_chrono class. The core functions it wraps are: CreateTimerQueue QueryPerformanceFrequency QueryPerformanceCounter

winapi_utils.h/.cpp

This file contains more general wrappers for the windows API Stuffs about handle, threads etc...

How it works

Using QueryPerformanceCounter require the user several steps getting QueryPerformanceFrequency calling QueryPerformanceCounter two times and use a formula to get the TeltaT the type LARGE_INTEGER is a wrapper for u64

Winapi_chrono() This class add a layer of abstraction, the timer becomes several indipendent start/stop timers

Winapi_chrono::Winapi_chrono( void ) The constructor initialize the class. Get the frequency.

Winapi_chrono::start( index ) Start the timer of index [index]

Winapi_chrono::stop( index ) Get the time elapsed since start

Winapi_chrono::stop_start( index ) Get the time elapsed since start, than restart

Winapi_chrono~Winapi_chrono( void ) Destroy all underlying structures

Hello world

float elapsed; my_timer = Winapi_chrono(); //construct timer class my_timer.start( 0 ); //start section 0 of timer //lots of fancy code elapsed = my_timer.stop( 0 ); //time past since start. //stop will NOT stop the count, another stop will return the elapsed time since start

my_timer.start( 0 )