[Mediawiki-l] Are parser extension functions run serially or in parallel?

Hi!

I wrote the code below for a custom tag <xdata>. This tag can appear more than once in the same article.

Suppose the custom tag appears exactly 5 times in an article. It appears that the renderXdata() function below would be invoked 5 times too. My question is: Is this function called (executed) serially or in parallel?

If it's run serially, is there a way to run them in parallel?

function wfXdataExtension() { global $wgParser; $wgParser->setHook( "xdata", "renderXdata" ); }

function renderXdata( $input, $argv, &$parser ) { // Code that does something, such as retrieving data from a database or flat file }

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