Re: [boost] Interprocess regexes

Subject: Re: [boost] Interprocess regexes
From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2009-12-07 05:22:36

Phil Endecott wrote:
> Hi Mike,
> 
> Mike Spertus wrote:
>> basic_string and other containers take an allocator template argument, 
>> while basic_regex does not.
>>
>> If basic_regex had an allocator it would reap all the same benefits 
>> that other string and container types do. In particular, it would be 
>> possible to use boost::interprocess to place them in shared memory.
> 
> IIUC, while the custom allocators let you put std::containers in shared 
> memory they are still not very useful since they can only be used by the 
> process that put them there - other processes will (potentially) see the 
> shared memory at a different address and all the pointers will be 
> wrong.  Is this level of functionality useful to you?

I suppose there wouldn't be any problem if the library author used 
Allocator::pointer instead of T*.