Re: Please help with testing & improving a StringValue class

From:
"Alf P. Steinbach" <alfps@start.no>
Newsgroups:
comp.lang.c++
Date:
Sun, 09 Sep 2007 16:38:57 +0200
Message-ID:
<13e8188hlr3is90@corp.supernews.com>
* Barry:

Alf P. Steinbach wrote:

I once suggested in [comp.std.c++] that SomeOne Else(TM) should propose


Alf,
I made some modification to v00

Aim:
Use policy for `DeleteFunc' template parameter for `SharedArray'
the DeleteFunc policy class should contain
static void Detete(T* p);

then `SharedArray' has no need to store the free function as member

I'll mail you the code that I modify, since the modification is sparse.


I got your code before I read the above explanation. I struggled a bit
to make it report memory leaks (why the &%?/(()! doesn't that code
report leaks?), since I didn't notice you'd added a policy. But did
notice the main program changes, which "should" have caused some leaks...

It saves four or eight bytes (32-bit/64-bit machine) per ref-counted
instance, at the (marginal) cost of requiring a free deleter function to
have extern linkage or be wrapped in a class.

Extern linkage: I'm thinking any free extern linkage function can be
automatically mapped to a suitable functor class; no need for client
code to define them, at least not if I'm not muddled in my thinking.

Cheers, & thanks,

- Alf

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