tcp_engine renamed to stream engine

The engine was not used exclusively for TCP connections.
Rather it was used to handle any socket with SOCK_STREAM
semantics. The class was renamed to reflect its true function.

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

src/Makefile.am

@@ -60,9 +60,9 @@ libzmq_la_SOURCES = \
     signaler.hpp \
     socket_base.hpp \
     stdint.hpp \
+    stream_engine.hpp \
     sub.hpp \
     tcp_connecter.hpp \
-    tcp_engine.hpp \
     tcp_listener.hpp \
     thread.hpp \
     trie.hpp \
@@ -117,9 +117,9 @@ libzmq_la_SOURCES = \
     session.cpp \
     signaler.cpp \
     socket_base.cpp \
+    stream_engine.cpp \
     sub.cpp \
     tcp_connecter.cpp \
-    tcp_engine.cpp \
     tcp_listener.cpp \
     thread.cpp \
     trie.cpp \

src/ipc_connecter.cpp

@@ -25,7 +25,7 @@
 #include <new>
 #include <string>
 
-#include "tcp_engine.hpp"
+#include "stream_engine.hpp"
 #include "io_thread.hpp"
 #include "platform.hpp"
 #include "random.hpp"
@@ -99,7 +99,7 @@ void zmq::ipc_connecter_t::out_event ()
     }
 
     //  Create the engine object for this connection.
-    tcp_engine_t *engine = new (std::nothrow) tcp_engine_t (fd, options);
+    stream_engine_t *engine = new (std::nothrow) stream_engine_t (fd, options);
     alloc_assert (engine);
 
     //  Attach the engine to the corresponding session object.

src/ipc_listener.cpp

@@ -26,7 +26,7 @@
 
 #include <string.h>
 
-#include "tcp_engine.hpp"
+#include "stream_engine.hpp"
 #include "io_thread.hpp"
 #include "session.hpp"
 #include "config.hpp"
@@ -78,7 +78,7 @@ void zmq::ipc_listener_t::in_event ()
         return;
 
     //  Create the engine object for this connection.
-    tcp_engine_t *engine = new (std::nothrow) tcp_engine_t (fd, options);
+    stream_engine_t *engine = new (std::nothrow) stream_engine_t (fd, options);
     alloc_assert (engine);
 
     //  Choose I/O thread to run connecter in. Given that we are already

src/stream_engine.cpp

@@ -34,14 +34,14 @@
 #include <string.h>
 #include <new>
 
-#include "tcp_engine.hpp"
+#include "stream_engine.hpp"
 #include "io_thread.hpp"
 #include "session.hpp"
 #include "config.hpp"
 #include "err.hpp"
 #include "ip.hpp"
 
-zmq::tcp_engine_t::tcp_engine_t (fd_t fd_, const options_t &options_) :
+zmq::stream_engine_t::stream_engine_t (fd_t fd_, const options_t &options_) :
     s (fd_),
     inpos (NULL),
     insize (0),
@@ -86,7 +86,7 @@ zmq::tcp_engine_t::tcp_engine_t (fd_t fd_, const options_t &options_) :
 #endif
 }
 
-zmq::tcp_engine_t::~tcp_engine_t ()
+zmq::stream_engine_t::~stream_engine_t ()
 {
     zmq_assert (!plugged);
 
@@ -102,7 +102,7 @@ zmq::tcp_engine_t::~tcp_engine_t ()
     }
 }
 
-void zmq::tcp_engine_t::plug (io_thread_t *io_thread_, session_t *session_)
+void zmq::stream_engine_t::plug (io_thread_t *io_thread_, session_t *session_)
 {
     zmq_assert (!plugged);
     plugged = true;
@@ -125,7 +125,7 @@ void zmq::tcp_engine_t::plug (io_thread_t *io_thread_, session_t *session_)
     in_event ();
 }
 
-void zmq::tcp_engine_t::unplug ()
+void zmq::stream_engine_t::unplug ()
 {
     zmq_assert (plugged);
     plugged = false;
@@ -143,13 +143,13 @@ void zmq::tcp_engine_t::unplug ()
     session = NULL;
 }
 
-void zmq::tcp_engine_t::terminate ()
+void zmq::stream_engine_t::terminate ()
 {
     unplug ();
     delete this;
 }
 
-void zmq::tcp_engine_t::in_event ()
+void zmq::stream_engine_t::in_event ()
 {
     bool disconnection = false;
 
@@ -204,7 +204,7 @@ void zmq::tcp_engine_t::in_event ()
         error ();
 }
 
-void zmq::tcp_engine_t::out_event ()
+void zmq::stream_engine_t::out_event ()
 {
     //  If write buffer is empty, try to read new data from the encoder.
     if (!outsize) {
@@ -243,7 +243,7 @@ void zmq::tcp_engine_t::out_event ()
     outsize -= nbytes;
 }
 
-void zmq::tcp_engine_t::activate_out ()
+void zmq::stream_engine_t::activate_out ()
 {
     set_pollout (handle);
 
@@ -254,7 +254,7 @@ void zmq::tcp_engine_t::activate_out ()
     out_event ();
 }
 
-void zmq::tcp_engine_t::activate_in ()
+void zmq::stream_engine_t::activate_in ()
 {
     set_pollin (handle);
 
@@ -262,7 +262,7 @@ void zmq::tcp_engine_t::activate_in ()
     in_event ();
 }
 
-void zmq::tcp_engine_t::error ()
+void zmq::stream_engine_t::error ()
 {
     zmq_assert (session);
     session->detach ();
@@ -270,7 +270,7 @@ void zmq::tcp_engine_t::error ()
     delete this;
 }
 
-int zmq::tcp_engine_t::write (const void *data_, size_t size_)
+int zmq::stream_engine_t::write (const void *data_, size_t size_)
 {
 #ifdef ZMQ_HAVE_WINDOWS
 
@@ -315,7 +315,7 @@ int zmq::tcp_engine_t::write (const void *data_, size_t size_)
 #endif
 }
 
-int zmq::tcp_engine_t::read (void *data_, size_t size_)
+int zmq::stream_engine_t::read (void *data_, size_t size_)
 {
 #ifdef ZMQ_HAVE_WINDOWS
 

src/stream_engine.hpp

@@ -18,8 +18,8 @@
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef __ZMQ_TCP_ENGINE_HPP_INCLUDED__
-#define __ZMQ_TCP_ENGINE_HPP_INCLUDED__
+#ifndef __ZMQ_STREAM_ENGINE_HPP_INCLUDED__
+#define __ZMQ_STREAM_ENGINE_HPP_INCLUDED__
 
 #include <stddef.h>
 
@@ -33,12 +33,15 @@
 namespace zmq
 {
 
-    class tcp_engine_t : public io_object_t, public i_engine
+    //  This engine handles any socket with SOCK_STREAM semantics,
+    //  e.g. TCP socket or an UNIX domain socket.
+
+    class stream_engine_t : public io_object_t, public i_engine
     {
     public:
 
-        tcp_engine_t (fd_t fd_, const options_t &options_);
-        ~tcp_engine_t ();
+        stream_engine_t (fd_t fd_, const options_t &options_);
+        ~stream_engine_t ();
 
         //  i_engine interface implementation.
         void plug (class io_thread_t *io_thread_, class session_t *session_);
@@ -90,8 +93,8 @@ namespace zmq
 
         bool plugged;
 
-        tcp_engine_t (const tcp_engine_t&);
-        const tcp_engine_t &operator = (const tcp_engine_t&);
+        stream_engine_t (const stream_engine_t&);
+        const stream_engine_t &operator = (const stream_engine_t&);
     };
 
 }

src/tcp_connecter.cpp

@@ -22,7 +22,7 @@
 #include <string>
 
 #include "tcp_connecter.hpp"
-#include "tcp_engine.hpp"
+#include "stream_engine.hpp"
 #include "io_thread.hpp"
 #include "platform.hpp"
 #include "random.hpp"
@@ -109,7 +109,7 @@ void zmq::tcp_connecter_t::out_event ()
     tune_tcp_socket (fd);
 
     //  Create the engine object for this connection.
-    tcp_engine_t *engine = new (std::nothrow) tcp_engine_t (fd, options);
+    stream_engine_t *engine = new (std::nothrow) stream_engine_t (fd, options);
     alloc_assert (engine);
 
     //  Attach the engine to the corresponding session object.

src/tcp_listener.cpp

@@ -24,7 +24,7 @@
 
 #include "platform.hpp"
 #include "tcp_listener.hpp"
-#include "tcp_engine.hpp"
+#include "stream_engine.hpp"
 #include "io_thread.hpp"
 #include "session.hpp"
 #include "config.hpp"
@@ -90,7 +90,7 @@ void zmq::tcp_listener_t::in_event ()
     tune_tcp_socket (fd);
 
     //  Create the engine object for this connection.
-    tcp_engine_t *engine = new (std::nothrow) tcp_engine_t (fd, options);
+    stream_engine_t *engine = new (std::nothrow) stream_engine_t (fd, options);
     alloc_assert (engine);
 
     //  Choose I/O thread to run connecter in. Given that we are already

src/vtcp_connecter.cpp

@@ -25,7 +25,7 @@
 #include <new>
 #include <string>
 
-#include "tcp_engine.hpp"
+#include "stream_engine.hpp"
 #include "io_thread.hpp"
 #include "platform.hpp"
 #include "random.hpp"
@@ -141,7 +141,7 @@ void zmq::vtcp_connecter_t::out_event ()
     }
 
     //  Create the engine object for this connection.
-    tcp_engine_t *engine = new (std::nothrow) tcp_engine_t (fd, options);
+    stream_engine_t *engine = new (std::nothrow) stream_engine_t (fd, options);
     alloc_assert (engine);
 
     //  Attach the engine to the corresponding session object.

src/vtcp_listener.cpp

@@ -26,7 +26,7 @@
 #include <string.h>
 #include <vtcp.h>
 
-#include "tcp_engine.hpp"
+#include "stream_engine.hpp"
 #include "session.hpp"
 #include "stdint.hpp"
 #include "err.hpp"
@@ -104,7 +104,7 @@ void zmq::vtcp_listener_t::in_event ()
     tune_tcp_socket (fd);
 
     //  Create the engine object for this connection.
-    tcp_engine_t *engine = new (std::nothrow) tcp_engine_t (fd, options);
+    stream_engine_t *engine = new (std::nothrow) stream_engine_t (fd, options);
     alloc_assert (engine);
 
     //  Choose I/O thread to run connecter in. Given that we are already