-TCx64 opens twice despite of allow 1 copy policy

[sw3n]

when i boot up my windows, and start TC from desktop, and accidentally hit enter twice on the shortcut (after clicking on it), TC starts twice, despite the fact, the "Allow only 1 copy at a time" is checked

windows 7 x64 enterprise

[petermad]

Cannot reproduce. Windows 7 SP1 x64 Home Premium

[JFierce7]

I can confirm this problem - Win8.1x64: select TC icon on desktop by mouse, press and hold return.

Also, I'm not sure if it is intentional that you always can start x64 and x86 TC at the same time.

Edit: Strange - doesn't happen everytime, maybe only first time after reboot or if CPU is not idle. But I definitely had 3 instances running.

[Ovg]

Not confirmed Win x64 SP1

[petermad]

I can confirm this problem - Win8.1x64: select TC icon on desktop by mouse, press and hold return.

I just tested witn Windows 8.1 x64 - I still cannot reproduce the behaviour.

[JFierce7]

I just tested witn Windows 8.1 x64 - I still cannot reproduce the behaviour.

Would you try this .bat:

Code: Select all

start C:\totalcmd\TOTALCMD64.EXE
start C:\totalcmd\TOTALCMD64.EXE
start C:\totalcmd\TOTALCMD64.EXE

[karlchen]

Hello, sw3n. Hello, JFierce7.

Could you, please, check the commandline behind the link file? Does it launch T.C. with the commandline option "/N"? Provided it does, "/N" will make T.C. create a new instance disregarding the enabled setting "Allow only 1 copy at a time". This is by design in order to be able to override this option on demand.

Cheers,
Karl

[Ovg]

2JFierce7
I do it ten times, three times I've got 3 windows of TC simultaneously

[petermad]

Would you try this .bat:

Code:
start C:\totalcmd\TOTALCMD64.EXE
start C:\totalcmd\TOTALCMD64.EXE
start C:\totalcmd\TOTALCMD64.EXE

Just did - Windows 8.1 - still only one instance of TC opened.

I do have TC in C:\totalcmd and I have UseIniInProgramDir=7 in wincmd.ini

[Ovg]

Just did it once more - result is the same:

I do it ten times, three times I've got 3 windows of TC simultaneously

[petermad]

OK - I now tested like 15 times - a the 7th try I got 3 instances of TC. At four later tries i got 2 (two not three) instances of TC.

Interestingly enough, when I get 2 or 3 instances the title lines are identical - no [2] and [3].

Even more interestingly - If I allow more than 1 instance of TC and use the batch file, I get one instance with normal title line and two instances with [2] - not one with [3] in the title line as expected.

[white]

I once reported that when you start multiple instances quickly the counter in the title bar is wrong. The answer was that that could happen. I think this is similar/related and by design.

[MarcinW]

by design

It's rather some problem with racing conditions during detecting another TC instances and also counting them.

@ghisler(Author):
What method of detection does TC use?

Regards

[siealex]

It looks like you start the second instance before the first one generates its window. This can happen on very slow machines.

[MarcinW]

... or on machines that have a high CPU usage at the moment of launching TC.