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*.