Subject: Re: [boost] Review of a safer memory management approach for C++?
From: Larry Evans (cppljevans_at_[hidden])
Date: 2010-05-26 23:52:44
On 05/26/10 17:37, Bartlett, Roscoe A wrote:
> Hello Boost developers,
[snip]
> pointers in high-level code. The technical report for the approach
> is:
> Teuchos C++ Memory Management Classes, Idioms, and Related
> Topics The Complete Reference A Comprehensive Strategy for Safe
> and Efficient Memory Management in C++ for High Performance
> Computing
> and can be found at:
>
> http://www.cs.sandia.gov/~rabartl/TeuchosMemoryManagementSAND.pdf
[snip]
Page 24 contains:
ill-conceived ability to implicitly convert arrays of derived types to
arrays of base types.
There only one problem with doing that that I can think of and that's
the difference in sizes which would lead to operator++ for base array
possibly pointing to the middle of an object of the derived type.
However, couldn't that be overcome by wrapping the container in
something that adjusted the operator++ to increment the pointer by
the derived type size while returning a pointer to the base type?
Also, the table on that page just mentions Array's. What about all
other stl types which are implemented using pointers (like std::list).
How would one know whether or not the list elements contained
elements that pointed to the same list object; thereby leading to
a circular reference. How would that be handled?