Hello,
No, Analysis window SKIPS symbols without data.
Best regards,
Tomasz Janeczko
amibroker.com
On 2016-06-27 23:08, Keith McCombs kmccombs@engineer.com [amibroker] wrote:
TJ --
Thank you for your rapid reply.
I just now discovered that the 10 stocks that were not printed by fputs() had NO data. I wasn't expecting that, and it took hours (more like days) to find.
BTW, I would have thought that even with no data, the Name() and FullName() should have been printed.
It would be very nice if it did.
Thanks again.
-- Keith
On 6/27/2016 10:49 AM, Tomasz Janeczko groups@amibroker.com [amibroker] wrote:
Hello,
Thank you very much for your e-mail.
You are using file functions (esp. fopen) incorrectly (without "shared" flag).
Correct code is here:
http://www.amibroker.com/kb/2016/01/27/how-to-write-to-single-shared-file-in-multi-threaded-scenario/
Best regards,
Tomasz Janeczko
amibroker.com
On 2016-06-27 09:47, Keith McCombs kmccombs@engineer.com [amibroker] wrote:
Hi --
I'm trying to output a string containing Symbol, Fullname, Firstdate, Lastdate, and Numberofbars for all symbols in a watchlist to a file using fputs(). With watchlists longer than only a few symbols, one or more strings are always missing. For example for a watchlist containing 83 symbols, only 73 are output (not always the same 73 though). This happens using either Explore and Scan.
I believe the problem is related to Analysis multithreading. And tried to fix it using semaphore (identical to that of Example 2 in the AB manual). Please see code snippets below for the relevant parts:
function _TryEnterCS(secname){
global _cursec;
_cursec="";
// try obtaining semaphore for 1000 ms
for(i =0; i <1000; i++){
if(StaticVarCompareExchange(secname,1,0) == 0){
_cursec = secname;
break;
}else ThreadSleep(10);//sleep one millisecond
}
return _cursec !="";
}
// call it ONLY when _TryEnterCS returned TRUE !
function _LeaveCS(){
global _cursec;
if(_cursec !=""){
StaticVarSet(_cursec,0);
_cursec ="";
}
}
if(stocknumber == 0){
StaticVarRemove("*");
StaticVarSet("DelistedListActive", False);
fdelete(f1filename);
text1 = "SYM,NAME,FIRST,LAST,BARS\n";
fh1 = fopen(f1filename, "a");
if(fh1){
fputs(text1, fh1);
fclose(fh1);
StaticVarSet("DelistedListActive", True);
}else _trace("Opening fh1 failed, stocknum0\n");
}
if(StaticVarGet("DelistedListActive") == True){
datearray = DateNum();
first = int(datearray[0]);
last = int(datearray[BarCount - 1]);
firststr = DateNumToStr(first);
laststr = DateNumToStr(last);
barsstr = NumToStr(BarCount, 1.0, False);
for(i=10; i>0; --i){ // for large data, need to try multiple times
if(_TryEnterCS("semifh1")) break; // successful
}if(i>0){ // in 10 or less tries
for(j=10; j>0; --j){ // fopen may need multiple tries
fh1 = fopen(f1filename, "a");
if(fh1){
fputs(Name() + "," + FullName() + "," + firststr + "," + laststr + "," + barsstr + "\n", fh1);
fclose(fh1);
_LeaveCS();
break; // out of for()
}else{ // if(j<=0){
_TRACE("Missed fh1 for stocknum: " + NumToStr(Status("Stocknum")) + "\n");
}
}if(j<=0) PopupWindow("Failed to EnterCS for " + Name(), "AB Warning", 0);
}else PopupWindow("Failed to EnterCS for " + Name(), "AB Warning", 0);
}
BTW, the _TRACE() AND PopupWindow() functions for trouble shooting. But, they never display.
Any and all help would be appreciated.
Thank you.
-- Keith
__._,_.___
Posted by: Tomasz Janeczko <groups@amibroker.com>
| Reply via web post | • | Reply to sender | • | Reply to group | • | Start a New Topic | • | Messages in this topic (4) |
Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.
**** IMPORTANT PLEASE READ ****
This group is for the discussion between users only.
This is *NOT* technical support channel.
TO GET TECHNICAL SUPPORT send an e-mail directly to
SUPPORT {at} amibroker.com
TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
(submissions sent via other channels won't be considered)
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
This group is for the discussion between users only.
This is *NOT* technical support channel.
TO GET TECHNICAL SUPPORT send an e-mail directly to
SUPPORT {at} amibroker.com
TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
(submissions sent via other channels won't be considered)
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
.
__,_._,___
EmoticonEmoticon