[boost] Re: Re: [circular buffer review]

From: Thorsten Ottosen (nesotto_at_[hidden])
Date: 2004-03-14 10:38:42

> > > > I guess a deque cannot guarantee sequential data. Or
> > > > could it with a special
> > > > allocator?
> > > I don't understand this question.
> >
> > I mean a vector and a circular_buffer can pass a pointer to their data
to
> > C-style functions.
> > A deque cannot because it's data is not guaranteed to be sequential. The
> > question is if
> > a deque could provide this guarantee somehow using eg. a special
> allocator.
>
>    A deque can't.  From the way it is specified, it more-or-less has to be
> implemented as several fixed-size buffers, plus a control structure to
tell
> which buffer is being used when.

then what about one big fixed-sized buffer? Can't the allocator determine
the buffer size?

>A circular_buffer really can't be passed to
> a C-style function either.  What if the data starts in the middle and
wraps
> around the end?

You would have to call data(), right?

br

Thorsten