Solved

Timer function in C++

Posted on 2004-04-17
4
38,766 Views
Last Modified: 2013-11-17
I am using alarm() to time a process.

Is there something with which i can measure by milliseconds ?

The alarm() in C++ allows only seconds and not anything lesser than that.

I did try ftime() and time(),But i need something to timeout automatically.

Thanks
0
Comment
Question by:karthikram
  • 2
4 Comments
 
LVL 9

Expert Comment

by:Cayce
ID: 10849712
What OS/Platform are you using?
What compiler?
0
 

Author Comment

by:karthikram
ID: 10849768
RH Linux with a g++ compiler 3.2
0
 
LVL 9

Accepted Solution

by:
Cayce earned 125 total points
ID: 10849912
Why you post in the C++Builder forum then? ;)

Just kidding, however, the PTimer class sounds like a good idea to me.
There's some documentation  to it in: http://www.openh323.org/docs/PWLib/PTimer.html. This class comes with pwlib-devel, you can easily get it using red carpet.

OR use POSIX timers, check http://www.nd.edu/~lemmon/courses/UNIX/l4a/node9.html. Which is a good idea for portability.
0
 

Expert Comment

by:Mike1975
ID: 10886163
//Try this!!!
LONGLONG Frequency, CurrentTime, LastTime;
    double TimeScale;

QueryPerformanceFrequency( (LARGE_INTEGER*) &Frequency);
TimeScale = (1.0/Frequency)*1000.0;

QueryPerformanceCounter( (LARGE_INTEGER*) &LastTime);//begin measure

//Add the function in here

QueryPerformanceCounter( (LARGE_INTEGER*) &CurrentTime);//end measure
AnsiString milliseconds = (CurrentTime-LastTime)*TimeScale;
//difference in milliseconds is (CurrentTime-LastTime)*TimeScale
0

Featured Post

Enabling OSINT in Activity Based Intelligence

Activity based intelligence (ABI) requires access to all available sources of data. Recorded Future allows analysts to observe structured data on the open, deep, and dark web.

Join & Write a Comment

In our object-oriented world the class is a minimal unit, a brick for constructing our applications. It is an abstraction and we know well how to use it. In well-designed software we are not usually interested in knowing how objects look in memory. …
Programmer's Notepad is, one of the best free text editing tools available, simply because the developers appear to have second-guessed every weird problem or issue a programmer is likely to run into. One of these problems is selecting and deleti…
THe viewer will learn how to use NetBeans IDE 8.0 for Windows to perform CRUD operations on a MySql database.
The viewer will learn how to use and create keystrokes in Netbeans IDE 8.0 for Windows.

747 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now