non reentrant nature of perl's core
This non-reentrant nature of perl's core goes much deeper than many people realize. It's not that there's a bunch of function that are reentrant, and that perl now has to call the *_r equivalents. It goes deeper. Even things that on the Perl level are static are non-reentrant. Like fetching the value of a scalar. For instance, print $var can't be done in parallel, because $var might not have the pOK flag set, which means the Perl has to convert the numerical value of $var to a string value - which means that the underlaying datastructure is modified. (This is the reason why variables are not shared by default).

Abigail

In reply to Re: Why use threads over processes, or why use processes over threads? by Abigail-II
in thread Why use threads over processes, or why use processes over threads? by pg

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