zeromq/libzmq — pull request #507 by bjoto (2013-01-30 15:56:20+00:00)
Title:  LIBZMQ-498 - Remove heap allocations in zmq_poll for small poll item sets

Until now, zmq_poll always allocates the poll items on the heap.
Now, small item sets, up to ZMQ_POLLITEMS_DFLT, are stack allocated
and only larger sets are allocated on the heap.