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From: Frank Mori Hess (frank.hess_at_[hidden])
Date: 2008-03-24 14:04:01

Hash: SHA1

On Monday 24 March 2008 13:49 pm, Frank Mori Hess wrote:
> On Monday 24 March 2008 12:13 pm, Phil Endecott wrote:
> > The Lockable that I have is a Lockable< array<int,100> >. I need
> > something like a Lockable<int> to pass to the function, because the
> > function is only interested in part of the protected data. I want some
> > way to reference the "parent" Lockable's mutex and a portion of its
> > data (element of array, field of a struct etc.)
> Oh, I see now. So you would want something along the lines of a
> pointer/reference-like Lockable that has a constructor which can take a
> reference (or maybe a shared_ptr) to an already existing mutex.
> Is there some way to make it possible to use boost::bind for this? So you
> could bind together a Lockable and a function returns a reference to the
> object you're interested in, and then use it later to create a
> scoped_lock/lock_acquirer?

Or how about an aliasing constructor for poet::monitor_ptr that works
similarly to the one for shared_ptr? Using it would result in a monitor_ptr
that shares its mutex (and ownership) with the original monitor_ptr, but
which can have an underlying pointer of a different type and address.

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