Re: [log4perl-devel] Synchronized appender errors for multiple processes

[Olaf H. <ola...@ph...>]

...

> I see these errors:
> 
> Couldn't remove semaphore set 23789588: Identifier removed at 
> source.pl line 0
> Couldn't remove shared memory segment 23789588: Invalid argument at 
> source.pl line 0
> 

IMHO adding the following line to your config ...

  log4perl.appender.SyncScreen.options  = sub { { create => 1, destroy => 0 } }

... should solve the issue.

The 'destroy' attribute controls whether the semaphore will be removed while a
process is going to terminate. With the given additional line the semaphore
survives. (You can check this also with 'ipcs' tool.) 

If this is a problem for you then your altruistic good parent process ;-) will
have to clean it up at the very end. 

Regards,
Olaf