Front page | perl.perl5.porters |
Postings from July 2001
On Thu, 5 Jul 2001, Paul Johnson wrote: > On Thu, Jul 05, 2001 at 08:42:52AM -0500, David M. Lloyd wrote: > > > Exactly what is a plugable runops function? Is that something that exists > > in perl today (5.6)? Is there an API interface to it? > > It is a feature that Malcolm added when he first started on the compiler > stuff, if I remember correctly. ><snip> > > Its actually fairly simple, you write your own runops function and tell > Perl to use it. See Cover.xs in Devel::Cover for a working example. OK, I see how it works, and it seems simple. However, it seems that only one thing can be using the runops deal at a time. Also, would using this method invalidate -DDEBUGGING? Maybe what I should do is make an XS module that makes a generic callback interface available to other modules by keeping a linked list of callbacks... that may be something that other people can use too. I guess what I'd do is make a few functions available from the module: /* Returns a 'handle' that can be used to remove a callback */ int add_callback(void (*callback)(void *data), int enable_cb); /* Remove a callback from the list */ void remove_callback(int handle); /* Set's the 'enable' flag so that a callback is called at next opportunity (this function would be async-safe */ void enable_callback(int handle, void *data); - D <dmlloyd@tds.net>Thread Previous | Thread Next