inproc transport - initial commit

1 files changed, 60 insertions, 2 deletions

diff --git a/src/socket_base.cpp b/src/socket_base.cpp
index 6583608..86e1205 100644
--- a/src/socket_base.cpp
+++ b/src/socket_base.cpp
@@ -43,7 +43,9 @@ zmq::socket_base_t::socket_base_t (app_thread_t *parent_) :
     pending_term_acks (0),
     ticks (0),
     app_thread (parent_),
-    shutting_down (false)
+    shutting_down (false),
+    sent_seqnum (0),
+    processed_seqnum (0)
 {
 }
 
@@ -81,6 +83,9 @@ int zmq::socket_base_t::bind (const char *addr_)
     addr_type = addr.substr (0, pos);
     addr_args = addr.substr (pos + 3);
 
+    if (addr_type == "inproc")
+        return register_endpoint (addr_args.c_str (), this);
+
     if (addr_type == "tcp") {
         zmq_listener_t *listener = new zmq_listener_t (
             choose_io_thread (options.affinity), this, options);
@@ -126,6 +131,42 @@ int zmq::socket_base_t::connect (const char *addr_)
     addr_type = addr.substr (0, pos);
     addr_args = addr.substr (pos + 3);
 
+    if (addr_type == "inproc") {
+
+        //  Find the peer socket.
+        socket_base_t *peer = find_endpoint (addr_args.c_str ());
+        if (!peer)
+            return -1;
+
+        pipe_t *in_pipe = NULL;
+        pipe_t *out_pipe = NULL;
+
+        //  Create inbound pipe, if required.
+        if (options.requires_in) {
+            in_pipe = new pipe_t (this, peer, options.hwm, options.lwm);
+            zmq_assert (in_pipe);
+        }
+
+        //  Create outbound pipe, if required.
+        if (options.requires_out) {
+            out_pipe = new pipe_t (peer, this, options.hwm, options.lwm);
+            zmq_assert (out_pipe);
+        }
+
+        //  Attach the pipes to this socket object.
+        attach_pipes (in_pipe ? &in_pipe->reader : NULL,
+            out_pipe ? &out_pipe->writer : NULL);
+
+        //  Attach the pipes to the peer socket. Note that peer's seqnum
+        //  was incremented in find_endpoint function. When this command
+        //  is delivered, peer will consider the seqnum to be processed.
+        //  TODO: Seems that 'session' parameter is unused...
+        send_bind (peer, NULL, out_pipe ? &out_pipe->reader : NULL,
+            in_pipe ? &in_pipe->writer : NULL);
+
+        return 0;
+    }
+
     //  Create the session.
     io_thread_t *io_thread = choose_io_thread (options.affinity);
     session_t *session = new session_t (io_thread, this, session_name.c_str (),
@@ -319,13 +360,24 @@ int zmq::socket_base_t::recv (::zmq_msg_t *msg_, int flags_)
 
 int zmq::socket_base_t::close ()
 {
+    shutting_down = true;
+
+    //  Let the thread know that the socket is no longer available.
     app_thread->remove_socket (this);
 
     //  Pointer to the dispatcher must be retrieved before the socket is
     //  deallocated. Afterwards it is not available.
     dispatcher_t *dispatcher = get_dispatcher ();
 
-    shutting_down = true;
+    //  Unregister all inproc endpoints associated with this socket.
+    //  From this point we are sure that inc_seqnum won't be called again
+    //  on this object.
+    dispatcher->unregister_endpoints (this);
+
+    //  Wait till all undelivered commands are delivered. This should happen
+    //  very quickly. There's no way to wait here for extensive period of time.
+    while (processed_seqnum != sent_seqnum.get ())
+        app_thread->process_commands (true, false);
 
     while (true) {
 
@@ -364,6 +416,12 @@ int zmq::socket_base_t::close ()
     return 0;
 }
 
+void zmq::socket_base_t::inc_seqnum ()
+{
+    //  NB: This function may be called from a different thread!
+    sent_seqnum.add (1);
+}
+
 zmq::app_thread_t *zmq::socket_base_t::get_thread ()
 {
     return app_thread;