Re: Method Call from inside a file.

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From	Brian Candler <b.candler@pobox.com>
Newsgroups	comp.lang.ruby
Subject	Re: Method Call from inside a file.
Date	Fri, 1 Apr 2011 17:00:20 -0500
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Tridib Bandopadhyay wrote in post #990442:
>> I don't know what you mean by "acting like a library function".
>
> I mean to say that I am trying to write a function which will allow the
> users to free the allocated memory by themselves rather than doing it by
> Garbage Collection. So I need a syntax like that of C
>
> free(variable);

I believe you're writing C code for use by ruby. Ruby doesn't provide 
users with any free() method; users rely on garbage collection. So if 
you want to extend ruby in C, you need to make your code work with 
ruby's garbage collection.

A ruby user can *prevent* something from being garbage collected, if 
they want, just by holding a reference to it (e.g. in a global 
variable).

If you read 
http://www.ruby-doc.org/docs/ProgrammingRuby/html/ext_ruby.html then 
you'll find whole sections on memory allocation and garbage collection. 
Look at Data_Make_Struct and Data_Wrap_Struct in particular. If you 
won't read the documentation, then I'm afraid you're on your own.

Of course, if you're writing C to be called from C (rather than from 
ruby) then you can have people call your own allocate and free routines. 
But this is not a forum about writing C programs.

-- 
Posted via http://www.ruby-forum.com/.

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Thread

Re: Method Call from inside a file. Tridib Bandopadhyay <tridib04@gmail.com> - 2011-04-01 10:44 -0500
  Re: Method Call from inside a file. Brian Candler <b.candler@pobox.com> - 2011-04-01 13:23 -0500
    Re: Method Call from inside a file. Tridib Bandopadhyay <tridib04@gmail.com> - 2011-04-01 13:33 -0500
      Re: Method Call from inside a file. Brian Candler <b.candler@pobox.com> - 2011-04-01 17:00 -0500

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