[zeromq-dev] ZMQ - Send std::shared_ptr via inproc pub-sub?

BJovke bjovan at gmail.com
Wed Jun 24 19:25:18 CEST 2020


Hi.

You can send a pointer to your shared_ptr and then the receiver should copy
construct (it's not an actual copy but a reference) it's own shared_ptr
from it and forget about this pointer.


On Wed, Jun 24, 2020, 19:12 Serguei Khasimkhanov <SerKhas at hotmail.com>
wrote:

> Hello all,
>
> I have a publisher thread that has a bunch of shared_ptrs to large chunks
> of data. Occasionally I want to share some of those shared_ptrs with
> subscribers (for read-only.) The problem is that ZeroMQ only allows sending
> binary data, not C++ objects. How can I accomplish this?
>
> I was thinking I could allocate a copy of the shared_ptr on the heap, then
> publish a pointer to it, but since I don't know when the subscribers are
> done using that pointer, I don't know when to deallocate it.
>
> - Ser
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