How to get the CPU time and current time in C++.Net?

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Hi everyone.

I have question to ask.

How can I get the current time and the cpu time in an application in microsecs?

I found a simple code to run but could'nt succed for cpu time.

C++

clock_t start, end;
 double elapsed;
 
start = clock();
... /* Do the work. */
end = clock();
elapsed = ((double) (end - start)) / CLOCKS_PER_SEC;

So, how to get the current time and cpu time?
My best regards...

Posted 22-Sep-11 0:35am

Un_NaMeD

Updated 22-Sep-11 23:37pm

Sergey Chepurin

v3

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Sergey Chepurin 23-Sep-11 5:41am

Just corrected the question to make it easier for the others to search for the answer on CPU time.

3 solutions

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E.F. Nijboer · Answer 1 · 2011-09-22T00:41:00

Solution 1

How about DateTime.Now?
http://msdn.microsoft.com/en-us/library/system.datetime.now.aspx[^]

By the way... the division by CLOCKS_PER_SEC is giving you the number of seconds because is divides it by the number of clock ticks your cpu does every second.

Good luck!

Posted 22-Sep-11 0:41am

E.F. Nijboer

Updated 22-Sep-11 0:44am

v2

chenliangxu · Answer 2 · 2011-09-22T04:11:00

Solution 2

Hi,maybe you can try function time() to get the system time.
A simple example is shown as follows:

C++

#include <iostream>
#include <ctime>
using namespace std;

int main()
{
    time_t tmpTime;
    time(&tmpTime);
    cout<<"The time is "<<ctime(&tmpTime)<<endl;
    return 0;
}

Good luck!

Posted 22-Sep-11 4:11am

chenliangxu

Updated 22-Sep-11 11:44am

v2

Sergey Chepurin · Answer 3 · 2011-09-22T05:33:00

Solution 3

If you will manage to mix managed and unmanaged code for your C++/CLI application, then this Get CPU Usage with GetSystemTimes seems to do what you need. Note that you have to compile the code provided in "Comments and Discussions" section (see The way it's supposed to be... post).

Posted 22-Sep-11 5:33am

Sergey Chepurin