[boost] high_resolution_timer \ timer feature requests for Boost.Timer

From: Brian Braatz (brianb_at_[hidden])
Date: 2005-03-03 20:23:11

First off- note that Timer can take a start time on the ctor:

 

class timer

{

 public:

         timer() { _start_time = std::clock(); } // postcondition:
elapsed()==0

(snip)

 

 

high_resolution_timer does not however:

 

class high_resolution_timer

{

public:

    // ctor

    high_resolution_timer() 

    {

        start_time.QuadPart = 0;

        frequency.QuadPart = 0;

 

        if (!QueryPerformanceFrequency(&frequency))

            throw std::runtime_error("Couldn't acquire frequency");

 

        restart(); 

    } 

(snip)

 

 

MY PROBLEM:

 

      I need to feed the timer the START time (or get FROM it the start
time would be preferred)

The reason I need this is because for logging purposes (working with the
Profiler from Christopher Diggins) I need to log the start and stop
times, and I need it to (for internal cross reference) be the same
number for multiple purposes.

 

MY REQUESTS:

Easy request:

high_resolution_timer is changed to have the same type of ctor as timer
does

 

May Start a discussion request:

      That something like a starttime() method is provided for both
classes

      

Medium request-

      That both classes do a typedef for the type returned by the
starttime method

 

i.e. instead of

class high_resolution_timer

{

public:

      (snip)

private:

    timer t; // backup in case of QueryPerformanceCounter() bug

    LARGE_INTEGER start_time;

    LARGE_INTEGER frequency;

}; 

 

You have instead:

class high_resolution_timer

{

public:

      (snip)

      

      typedef LARGE_INTEGER TIME_TYPE;

 

private:

    timer t; // backup in case of QueryPerformanceCounter() bug

    TIME_TYPE start_time;

    TIME_TYPE frequency;

}; 

(for both high_resolution_timer and timer)

 

There you go, those are my requests. Now I will sit here quietly and
hope there is a Santa Claus....

 

(grin)