The ->can case is just Perl's broken (or at least picky and somewhat perverse) prototypes so you can work around it easily enough with: 

&async( $o->can("method"), $o, ... );

[download]

Note the leading ampersand. Though I wouldn't recommend this hack even if the ambersand wasn't required.

The other problem was error(s) on your part. 

async{ sub{ $o->method­( qw[ the quick brown fox ] ) } };;

[download]

Note that you used a curly brace not a paren. After fixing that I still occasionally didn't get output so I added a sleep in the main thread.

I certainly wasn't trying to make the case that using objects in Perl threads were worthwhile, obviously.

But I'm not sure that there is any benefit to the extra level of indirection.

I consider "not hard-coding method selection" a fine benefit, especially since what class a method actually comes from is an implementation detail that the user of the object shouldn't be bothered with much less be relying upon. Then there is the possiblity of an object that is aware of "method" context and so breaks with your hack.

Adding a simple pair of braces (with or without "sub", depending on your paren choices and the vagaries of Perl prototypes) to a normal method invocation seems a much better idea than hard-coding a method selection and then listing the object after that. The benefit on clarity of code (even if the code mostly doesn't work because Perl threads still rather suck) is quite significant.

- tye        

In reply to Re^6: Doing two things at once, fork question. (thread + method) by tye
in thread Doing two things at once, fork question. by mhearse

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