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From: Pablo Aguilar (pablo.aguilar_at_[hidden])
Date: 2005-01-06 14:33:05

Good point, I just didn't bother writing a handle class given I knew I could
use shared_ptr and the space/time overhead wasn't important.

Anyway, I'll take a shot at writing an auto_handle class.

"Ben Hutchings" <ben.hutchings_at_[hidden]> wrote in message
> Pablo Aguilar wrote:
>> Thanks for your reply...
>> You're right, "reset" would delete the pointer... but when you're getting
>> rid of a pointer obtained from a factory, like I was in my case, pointers
>> don't always get disposed of using delete, but rather another function
>> (like p->release())
>> And rather than writing special purpose smart pointers for each type of
>> deleting function (p->dispose(), p->release(), api_function_free(p),
>> etc..) you can use shared_ptr with a custom deleter (here:
>> mem_fn(&pointer_type::dispose) or bind(&api_function_free, _1))
> In some cases you can avoid the space and time overhead of shared_ptr by
> using a smart pointer template for which the custom deleter is a template
> argument. In fact you can get even more general than that quite easily; I
> have a class template called auto_handle which with minimal work can be
> used to encapsulate all kinds of things with custom deleters, including
> Windows handles and POSIX file descriptors.
> Ben.

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