Implement flow control

This commit introduces the necessary changes necessary
for implementing flow control. None of the socket types
implements the flow control yet. The code will crash when
the flow control is enabled and the thw lwm is reached.

The following commits will add flow-control support for
individual socket types.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/object.hpp b/src/object.hpp
index 1544109..f29342e 100644
--- a/src/object.hpp
+++ b/src/object.hpp
@@ -71,6 +71,8 @@ namespace zmq
              class reader_t *in_pipe_, class writer_t *out_pipe_,
              const blob_t &peer_identity_, bool inc_seqnum_ = true);
         void send_revive (class object_t *destination_);
+        void send_reader_info (class writer_t *destination_,
+             uint64_t msgs_read_);
         void send_pipe_term (class writer_t *destination_);
         void send_pipe_term_ack (class reader_t *destination_);
         void send_term_req (class socket_base_t *destination_,
@@ -88,6 +90,7 @@ namespace zmq
         virtual void process_bind (class reader_t *in_pipe_,
             class writer_t *out_pipe_, const blob_t &peer_identity_);
         virtual void process_revive ();
+        virtual void process_reader_info (uint64_t msgs_read_);
         virtual void process_pipe_term ();
         virtual void process_pipe_term_ack ();
         virtual void process_term_req (class owned_t *object_);