John, If you are using a Pentium, there is an instruction that reads a 64 bit counter. Try the following:
|*function* RDTSC: Int64; *assembler*; *asm* RDTSC /// result Int64 in EAX and EDX/ *end*; The value returned is the number of clock cycles since reboot. If the compiler you are using converts this to inline code, then the only overhead is the instruction itself. Don't know the performance, but in Delphi 6 & 7, it was about 84 clock cycles. Delphi 2005, 2006 should be much less. Note that you need to know the machine's CPU clock rate to convert this to a time. If you are trying to time code, then this isn't important, just count the clock cycles. Have a look at this web site for more info on how to implement in different versions of Delphi: http://www.geocities.com/izenkov/howto-rdtsc.htm Peter | _______________________________________________ Delphi mailing list -> [email protected] http://www.elists.org/mailman/listinfo/delphi
