That is not true. GetPerformanceCounter function uses Windows API QueryPerformanceCounter and QueryPerformanceFrequency functions. These APIs make use of RDTSC, which in turn uses The Time Stamp Counter is a 64-bit HARDWARE register present on all x86 processors since the Pentium. It counts the number of CPU clock ticks since reset. This instruction returns the TSC in EDX:EAX. Since it is hardware counter, its precision is actually equal to precision of CPU clock and does not depend on any software. The fact that your program may get switched by pre-emptive multitasking OS, may give results that vary from measurement to measurement, but it does not change the fact that each of the measurements is accurate. It is simply your code taking different time to execute because of multitasking OS.

if (StaticVarGet(”LastNewBarSignal”) != LastValue(TimeNum())
{
StaticVarSet(”LastNewBarSignal”, LastValue(TimeNum());
….
}

P.s:
This will signal a new bar when you start up amibroker as well!

Y

A functioning system, regardless of origin, but verified by me, is stored in the System folder with some descriptive title, e.g. MACrossplusADX. If the system is a clear trend following system I might name it T_MACrossplusADX. T means Trend, R means Range, C means Comment, F means Filter

A seemingly functioning system, but not verified yet, and not developed by me, is filed with a S_ upfront and stored in a folder of origin (e.g. Bandy, TASC, etc.)

A system under development by me, or abandoned, is put in the the Custom folder.

Snippets of working code are filed under their appropriate folders, i.e. Exits, Auto.

I always try to put lots of descriptions in the code itself, so that I can quickly get up-to-date with what it is about. I always include where I got it from, date, author, url address and maybe some info, e.g. “can’t get it to work at this line, posted a question here about it.”

Hope this helps.

Re: Clearing OrderIDs at the Start of a New Bar

When I use this code, with my DB set to 1 minute, and my chart set to a 5 minute timeframe, my timenum() still increments every minute. So although a new bar does not get created until after 5 minutes, I get my orderid reset after 1 minute since TN != PrevTN.

For example, at 10:16am EST, my timenum is 101,600, and 10:17 is 101,700. So every minute my orderid’s get reset, and new order are submitted.

I have implemented a hack to get around it, but can you think of a more elegant solution than:

PrevTN = StaticVarGet(”TimeNumber”);
TN = LastValue(TimeNum());
Char = StrRight(NumToStr(TN),7);
NewBar = TN != PrevTN AND (Char ==”000.000″ OR Char ==”500.000″);
StaticVarSet(”TimeNumber”,TN);

Thank you for providing such excellent KB articles.

Cheers,

Adrian

Good luck,
herman