Re: [boost] [thread] Interest in a locking pointer and lockable concept

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

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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.

- -- 
Frank
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