// Actors get a pipe and arguments from caller
typedef void (zactor_fn) (
zsock_t *pipe, void *args);
// Create a new actor passing arbitrary arguments reference.
CZMQ_EXPORT zactor_t *
zactor_new (zactor_fn task, void *args);
// Destroy an actor.
zactor_destroy (zactor_t **self_p);
// Send a zmsg message to the actor, take ownership of the message
// and destroy when it has been sent.
zactor_send (zactor_t *self, zmsg_t **msg_p);
// Receive a zmsg message from the actor. Returns NULL if the actor
// was interrupted before the message could be received, or if there
// was a timeout on the actor.
// The caller is responsible for destroying the return value when finished with it.
CZMQ_EXPORT zmsg_t *
zactor_recv (zactor_t *self);
// Probe the supplied object, and report if it looks like a zactor_t.
zactor_is (void *self);
// Probe the supplied reference. If it looks like a zactor_t instance,
// return the underlying libzmq actor handle; else if it looks like
// a libzmq actor handle, return the supplied value.
CZMQ_EXPORT void *
zactor_resolve (void *self);
// Return the actors zsock handle. Use this when you absolutely need
// to work with the zsock instance rather than the actor.
CZMQ_EXPORT zsock_t *
zactor_sock (zactor_t *self);
// Self test of this class.
zactor_test (bool verbose);