From a8b410e66c3c75809c8e9c01dd3e35c579f02347 Mon Sep 17 00:00:00 2001
From: Martin Sustrik <sustrik@fastmq.commkdir>
Date: Sat, 8 Aug 2009 16:01:58 +0200
Subject: lockfree interaction patter for 3 theads implemented

---
 src/command.hpp | 59 +++++++++++++++++++++++----------------------------------
 1 file changed, 24 insertions(+), 35 deletions(-)

(limited to 'src/command.hpp')

diff --git a/src/command.hpp b/src/command.hpp
index 69c4e57..de94ca3 100644
--- a/src/command.hpp
+++ b/src/command.hpp
@@ -35,60 +35,49 @@ namespace zmq
         enum type_t
         {
             stop,
+            plug,
+            own,
             bind,
-            head,
-            tail,
-            reg,
-            reg_and_bind,
-            unreg,
-            engine,
-            terminate,
-            terminate_ack
+            term_req,
+            term,
+            term_ack
+
         } type;
 
         union {
 
+            //  Sent to I/O thread to let it know that it should
+            //  terminate itself.
             struct {
             } stop;
 
+            //  Sent to I/O object to make it register with its I/O thread.
             struct {
-                class pipe_reader_t *reader;
-                class session_t *peer;
-            } bind;
+            } plug;
 
+            //  Sent to socket to let it know about the newly created object.
             struct {
-                uint64_t bytes;
-            } tail;
+                class object_t *object;
+            } own;
 
+            //  Sent between objects to establish pipe(s) between them.
             struct {
-                uint64_t bytes;
-            } head;
-
-            struct {
-                class simple_semaphore_t *smph;
-            } reg;
-
-            struct {
-                class session_t *peer;
-                bool flow_in;
-                bool flow_out;
-            } reg_and_bind;
-
-            struct {
-                class simple_semaphore_t *smph;
-            } unreg;
+            } bind;
 
-            //  TODO: Engine object won't be deallocated on terminal shutdown
-            //  while the command is still on the fly!
+            //  Sent by I/O object ot the socket to request the shutdown of
+            //  the I/O object.
             struct {
-                class i_engine *engine;
-            } engine;
+                class object_t *object;
+            } term_req;
 
+            //  Sent by socket to I/O object to start its shutdown.
             struct {
-            } terminate;
+            } term;
 
+            //  Sent by I/O object to the socket to acknowledge it has
+            //  shut down.
             struct {
-            } terminate_ack;
+            } term_ack;
 
         } args;
     };
-- 
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