comp.lang.idl-pvwave archive: archive » Re: Object Data and pointer assignments

Home » Public Forums » archive » Re: Object Data and pointer assignments

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Object Data and pointer assignments [message #19316 is a reply to message #19310]

Thu, 09 March 2000 00:00

Ben Tupper
Messages: 186
Registered: August 1999

Senior Member

David Fanning wrote:

> You don't leak any memory because IDL is managing this
> whole process for you. (Remember, these pointers are
> not real pointers in the C sense. They are really
> glorified variables in the IDL sense.) This is the
> bestest feature of IDL pointers. :-)
>

Thanks for the tips. It's probably a good thing that I don't know much about
C (no bad habits, eh?)

>
> If you overwrite the pointer like this:
>
> self.InArray = Ptr_New(newStruct)
>
> you *will* leak memory because now you destroyed the
> only reference to that pointer area of memory. You could
> do this:
>
>

So, if I am following your instruction correctly, I should only see ...

self.InArray = Ptr_New(newStruct)

once in my code in the INIT function. Thereafter (in SetProperty for
example) it is simply derefence....

*self.inarray = newStruct

Thanks again,

Ben

--
Ben Tupper

Bigelow Laboratory for Ocean Science
tupper@seadas.bigelow.org

pemaquidriver@tidewater.net

Report message to a moderator

[Message index]

		Re: Object Data and pointer assignments By: John-David T. Smith on Fri, 10 March 2000 00:00
		Re: Object Data and pointer assignments By: Ben Tupper on Fri, 10 March 2000 00:00
		Re: Object Data and pointer assignments By: John-David T. Smith on Thu, 09 March 2000 00:00
		Re: Object Data and pointer assignments By: John-David T. Smith on Thu, 09 March 2000 00:00
		Re: Object Data and pointer assignments By: davidf on Thu, 09 March 2000 00:00
		Re: Object Data and pointer assignments By: Ben Tupper on Thu, 09 March 2000 00:00
		Re: Object Data and pointer assignments By: John-David T. Smith on Thu, 09 March 2000 00:00
		Re: Object Data and pointer assignments By: John-David T. Smith on Thu, 09 March 2000 00:00
		Re: Object Data and pointer assignments By: Ben Tupper on Thu, 09 March 2000 00:00
		Re: Object Data and pointer assignments By: John-David T. Smith on Thu, 09 March 2000 00:00
		Re: Object Data and pointer assignments By: davidf on Thu, 09 March 2000 00:00

Previous Topic:	Re: Q: contour levels from IDL
Next Topic:	Re: IDL and Linux on dual processor

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sat Oct 11 20:03:31 PDT 2025

Total time taken to generate the page: 0.24190 seconds