Appending multiple files 1

[stormbind]

Hi all,

If site visitors cause files to be appended, how do you stack the tasks so as to complete one set of changes before starting on the next?

Hope that makes sense

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[h011ywood]

You will probably need to fork off processes to do the changes. Then implement a lock file schema. If the lock file is present, wait, and then poll for it again.

while( 1 ){ 
    unless( -e file_lock ) {
       system("touch file_lock");
       open(FILE, "file_to_append");
       ....
       close FILE;
       system("rm file_lock");
       last;
     }
     sleep 2;
}

If there's a module...I'd also like to know. Thanks.