Capturing a time in milliseconds

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To have millisecond precision you have to use system calls specific to your OS.

In Linux you can use 

#include <sys/time.h>

timeval tv;
gettimeofday(&tv, 0);
// then convert struct tv to your needed ms precision

timeval has microsecond precision.

In Windows you can use:

#include <Windows.h>

SYSTEMTIME st;
GetSystemTime(&st);
// then convert st to your precision needs

Of course you can use Boost to do that for you 🙂

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