Don't Want the 2 Copies of Program Running

[Alex]

How do I keep a program from running two copies of itself at once? Can I write the program so that it checks the currently running processes, and exits if it discovers that there is already a copy of itself in memory?

In BASH I'd simply do something like this:

Code: Select all

RESULT=`ps -A | grep -c foobar`
if [ RESULT > 1 ]
then
    exit
fi

Is there an equivalent for purebasic?

Thanks,

Alex

[Droopy]

Try RunOnlyOneInstance() from the Droopy Lib
Author : netmaestro

[Alex]

Thanks, I'll try it!

Alex

Try RunOnlyOneInstance() from the Droopy Lib
Author : netmaestro

[Paul]

Good luck trying to run Windows library on Linux OS

[traumatic]

Good luck trying to run Windows library on Linux OS

[Alex]

Thanks for the heads up! I hadn't had a chance to look at the library yet.

Do you have a good suggestion for doing the same thing under Linux?

Thanks,

Alex

Good luck trying to run Windows library on Linux OS :)

[Droopy]

Sorry

[Alex]

No objections. At least you tried. Is your library written in purebasic? Could it possibly be compiled on Linux?

Sorry :oops:

[Droopy]

Code: Select all

ProcedureDLL RunOnlyOneInstance()
  *a = CreateSemaphore_(NULL,0,1,GetProgramName()) 
  If *a <> 0 And GetLastError_()= #ERROR_ALREADY_EXISTS 
    CloseHandle_(*a) 
    End
  EndIf
EndProcedure

CreateSemaphore is Win32 API function.
You must look as the same function in the GTK ?

[ts-soft]

See on: http://lidn.sourceforge.net/ and search for: gdk_threads_mutex
i have no example for you

[olejr]

I made a quick PB Library with only one function in it: AppRunning()..
There's no docs, or anything.. Just axtract and copy the apprunning_lib to the purelibraries/userlibraries folder..

Download: apprunning_lib.tar.gz
(source included)

Usage:

Code: Select all

;
; AppRunning(Name.s)  ; return 1 if app allready running, else 0
; 										; Name.s can be anything unique
;
; Compile the example like: pbcompiler test.pb -e exename
;
If(AppRunning("hello1224"))
  PrintN("App allready running...")
  End
EndIf

PrintN("Enter to exit")
Input()
End

Only "problem" is that if your app crash, or you quit by <ctrl-c>,
it take some time before the semaphore is released by the system..

Oh.. btw.. have no idea if the C source is the "right" way of doing a BP lib, but it seem to work..

[Alex]

Thanks, I'll give it a try.

Alex

I made a quick PB Library with only one function in it: AppRunning()..
There's no docs, or anything.. Just axtract and copy the apprunning_lib to the purelibraries/userlibraries folder..

Download: apprunning_lib.tar.gz
(source included)

Usage:

Code: Select all

;
; AppRunning(Name.s)  ; return 1 if app allready running, else 0
; 										; Name.s can be anything unique
;
; Compile the example like: pbcompiler test.pb -e exename
;
If(AppRunning("hello1224"))
  PrintN("App allready running...")
  End
EndIf

PrintN("Enter to exit")
Input()
End

Only "problem" is that if your app crash, or you quit by <ctrl-c>,
it take some time before the semaphore is released by the system..

Oh.. btw.. have no idea if the C source is the "right" way of doing a BP lib, but it seem to work.. :wink: