Re: [boost] portable precise garbage collector for C++

From: Achilleas Margaritis (axilmar_at_[hidden])
Date: 2007-09-21 05:14:22

O/H Kim Barrett έγραψε:
> At 2:06 AM +0300 9/21/07, Achilleas Margaritis wrote:
>> I thought std containers use the allocator::pointer type for their pointers.
> 
> Unfortunately, not necessarily. They're permitted to bypass that and use
> T* directly. Ion Gaztañaga ran into this when trying to put containers
> into shared memory for boost.interprocess.
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The collector offers the possibility of customizing the scanning 
procedure (the procedure which scans a block for pointers) through the 
class gc_traits<T>. So if there is a data structure where gc_ptr<T> can 
not be used, a custom scan routine especially coded for the data 
structure in question can solve the problem.