Re: [boost] Boost memory management guidelines

From: E. Gladyshev (egladysh_at_[hidden])
Date: 2003-08-30 01:35:55

--- Aleksey Gurtovoy <agurtovoy_at_[hidden]> wrote:
> E. Gladyshev wrote:
> > > * Consider parametrization, especialy if your library is to be available
> > >  for embedded or non-traditional (like DSP, etc.) platfroms.
> >
> > I think this item will make you think twice before hiding
> > boost::signal's allocator.
> 
> An allocator parameter is not the only way to parameterize, here, nor it is
> necessarily the most appropriate one. If I wanted to manage how
> function/signals allocate their memory, I wouldn't want to do it on a
> per-object basis - which, without the typedef templates, is pretty much the
> only level the allocator template parameter would allow me to manage it on.
> At least for these two libraries, a per-project parameterization seems more
> appropriate to the real needs, and something as simple as a trait class
> could provide the means.

Right. When we say "consider parametrization", it doesn't necessarily mean
a template parameter. Perhaps we should be more specific about it.
I agree about trait/policy classes.

Just for a note different trait classes could be used in one project
I think that it is not really a per-project parameterization (if you 
need a per-project parameterization, you could as well overload 
global new/delete).

In many cases, you do want to have different memory management 
strategies in one project depending on the execution context
and/or data type. Trait classes don't always prevent it.

Eugene

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