[zeromq-dev] Context wrangling

[Pieter Hintjens]

Hi Scott,

> The description ends with "Do not destroy the ctx, the thread
> does this automatically when it ends."

Do not destroy it in the child thread, it should say. The parent
thread should destroy the context as usual.

zthread_fork() keeps a single 0MQ context so threads can talk over inproc://

zthread_new() creates a detached thread that can create its own 0MQ
contexts as if it was a separate process.

> There doesn't seem to be a zthread_join, so the
> threads get terminated at random times w.r.t. one another.

Right... this is perhaps lacking.

You always want a zctx_new() and zctx_destroy() in the same thread. If
a thread isn't calling zctx_new() it should not call zctx_destroy().

-Pieter