OpenEuphoria

Re: address of variable

• Posted by "Boehme, Gabriel" <gboehme at POSTOFFICE.MUSICLAND.COM> Dec 16, 1999
• 510 views

Bernie Ryan wrote:

>I think that a programmer should be able to store data in a
>global variable inside a procedure or function. ( I don't need to
>know the variables address )

Erm...you already *can* do this...

global object var

...

procedure or_function()
   ...
   var = some_value
   ...
end procedure


>I also think a programmer should be able to use the free function
>to free memory that was allocated outside of a function or procedure
>from within a procedure or function.

atom addr

...

procedure one_procedure()
   ...
   addr = allocate(number_of_bytes_needed)
   ...
end procedure

...

procedure another_procedure()
   ...
   if addr then
      ...
      free(addr)
   end if
   ...
end procedure


>An example for it's need is:
>    With in a procedure and I want to free a memory pointer's
>allocated memory. Reallocate a larger memory block and then reassign
>that memory block to that same memory pointer. This at present can not
>be done in Euphoria.

atom addr
addr = 0

...

procedure resize_memory_block()
   ...
   free(addr)
   ...
   addr = allocate(new_length)
   ...
end procedure


>Correction, memory can be freed from within a function or procedure.
>But, I want to be able to reassign a global pointer inside a procedure or
>function.

Okay, just put "global" in front of my "atom addr" in the example above.


Hep yadda,
Gabriel Boehme

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