需要为c ++ std :: vector编写共享内存分配器

Question

Please help to write c++ allocator for std::vector< nIcon*> class.

All examples i find shows just what methods i need to overwrite, not code examples.

I need to implement allocator using shared memory on windows (using CreateFileMapping and MapViewOfFile)

Answer 1

May I suggest you look at the boost interprocess library ? It allows you to create allocators using shared memory.

I've seen some examples around, I would say just look a bit more. I agree that none of them do a perfect job, thus I won't recommend any in particular. Though beyond just implementing the small set of functions there is really nothing to it (provided you don't need to implement one for map).

Answer 2

You would use:

std::vector< nicon *, MyAllocator >

For how you would write MyAllocator