Re^2: batch processing via single open

Because I don't know how to do it. How can a piece of code understand if there already exists a connection to an external program so that it can re-use it without opening a new one thus saving time?

Comment on Re^2: batch processing via single open

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Re^3: batch processing via single open by daxim (Curate) on Jul 16, 2007 at 00:11 UTC
`our $ALREADY_CONNECTED = 0; # this var's purpose is called a semaphore DOCUMENT: for my $document (@collection) { if (!$ALREADY_CONNECTED) { open2(...); # and save the handles for later usage $ALREADY_CONNECTED = 1; # whoa! magic! redo DOCUMENT; } else { # blah blah process $document here, # the in/out handles exist. }; };` [download]	[reply] [d/l]

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Re^3: batch processing via single open
by daxim (Curate) on Jul 16, 2007 at 00:11 UTC

our $ALREADY_CONNECTED = 0; # this var's purpose is called a semaphore

DOCUMENT:
for my $document (@collection) {
    if (!$ALREADY_CONNECTED) {
        open2(...); # and save the handles for later usage
        $ALREADY_CONNECTED = 1; # whoa! magic!
        redo DOCUMENT;
    } else {
        # blah blah process $document here,
        # the in/out handles exist.
    };
};
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