[Qemu-devel] [PULL 14/15] sockets: Use new QAPI cloning

[Markus Armbruster <armbru@redhat.com>]

From: Eric Blake <eblake@redhat.com>

Rather than rolling our own clone via an expensive conversion
in and back out of QObject, use the new clone visitor.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1465490926-28625-15-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 include/io/task.h            |  2 +-
 include/qapi/clone-visitor.h |  2 ++
 include/qemu/sockets.h       |  4 ----
 io/channel-socket.c          |  9 +++++----
 qemu-char.c                  |  5 ++---
 util/qemu-sockets.c          | 23 -----------------------
 6 files changed, 10 insertions(+), 35 deletions(-)

diff --git a/include/io/task.h b/include/io/task.h
index a993212..df9499a 100644
--- a/include/io/task.h
+++ b/include/io/task.h
@@ -159,7 +159,7 @@ typedef int (*QIOTaskWorker)(QIOTask *task,
  *      QIOTask *task;
  *      SocketAddress *addrCopy;
  *
- *      qapi_copy_SocketAddress(&addrCopy, addr);
+ *      addrCopy = QAPI_CLONE(SocketAddress, addr);
  *      task = qio_task_new(OBJECT(obj), func, opaque, notify);
  *
  *      qio_task_run_in_thread(task, myobject_listen_worker,
diff --git a/include/qapi/clone-visitor.h b/include/qapi/clone-visitor.h
index 16ceff5..b16177e 100644
--- a/include/qapi/clone-visitor.h
+++ b/include/qapi/clone-visitor.h
@@ -11,7 +11,9 @@
 #ifndef QAPI_CLONE_VISITOR_H
 #define QAPI_CLONE_VISITOR_H
 
+#include "qemu/typedefs.h"
 #include "qapi/visitor.h"
+#include "qapi-visit.h"
 
 /*
  * The clone visitor is for direct use only by the QAPI_CLONE() macro;
diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h
index 462033a..2f3763f 100644
--- a/include/qemu/sockets.h
+++ b/include/qemu/sockets.h
@@ -107,10 +107,6 @@ SocketAddress *socket_local_address(int fd, Error **errp);
  */
 SocketAddress *socket_remote_address(int fd, Error **errp);
 
-
-void qapi_copy_SocketAddress(SocketAddress **p_dest,
-                             SocketAddress *src);
-
 /**
  * socket_address_to_string:
  * @addr: the socket address struct
diff --git a/io/channel-socket.c b/io/channel-socket.c
index 6ec87f8..196a4f1 100644
--- a/io/channel-socket.c
+++ b/io/channel-socket.c
@@ -23,6 +23,7 @@
 #include "io/channel-socket.h"
 #include "io/channel-watch.h"
 #include "trace.h"
+#include "qapi/clone-visitor.h"
 
 #define SOCKET_MAX_FDS 16
 
@@ -189,7 +190,7 @@ void qio_channel_socket_connect_async(QIOChannelSocket *ioc,
         OBJECT(ioc), callback, opaque, destroy);
     SocketAddress *addrCopy;
 
-    qapi_copy_SocketAddress(&addrCopy, addr);
+    addrCopy = QAPI_CLONE(SocketAddress, addr);
 
     /* socket_connect() does a non-blocking connect(), but it
      * still blocks in DNS lookups, so we must use a thread */
@@ -251,7 +252,7 @@ void qio_channel_socket_listen_async(QIOChannelSocket *ioc,
         OBJECT(ioc), callback, opaque, destroy);
     SocketAddress *addrCopy;
 
-    qapi_copy_SocketAddress(&addrCopy, addr);
+    addrCopy = QAPI_CLONE(SocketAddress, addr);
 
     /* socket_listen() blocks in DNS lookups, so we must use a thread */
     trace_qio_channel_socket_listen_async(ioc, addr);
@@ -331,8 +332,8 @@ void qio_channel_socket_dgram_async(QIOChannelSocket *ioc,
     struct QIOChannelSocketDGramWorkerData *data = g_new0(
         struct QIOChannelSocketDGramWorkerData, 1);
 
-    qapi_copy_SocketAddress(&data->localAddr, localAddr);
-    qapi_copy_SocketAddress(&data->remoteAddr, remoteAddr);
+    data->localAddr = QAPI_CLONE(SocketAddress, localAddr);
+    data->remoteAddr = QAPI_CLONE(SocketAddress, remoteAddr);
 
     trace_qio_channel_socket_dgram_async(ioc, localAddr, remoteAddr);
     qio_task_run_in_thread(task,
diff --git a/qemu-char.c b/qemu-char.c
index b73969d..0698b98 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -32,8 +32,7 @@
 #include "sysemu/char.h"
 #include "hw/usb.h"
 #include "qmp-commands.h"
-#include "qapi/qmp-input-visitor.h"
-#include "qapi/qmp-output-visitor.h"
+#include "qapi/clone-visitor.h"
 #include "qapi-visit.h"
 #include "qemu/base64.h"
 #include "io/channel-socket.h"
@@ -4389,7 +4388,7 @@ static CharDriverState *qmp_chardev_open_socket(const char *id,
         }
     }
 
-    qapi_copy_SocketAddress(&s->addr, sock->addr);
+    s->addr = QAPI_CLONE(SocketAddress, sock->addr);
 
     chr->opaque = s;
     chr->chr_write = tcp_chr_write;
diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c
index a0ca6d4..fb83d48 100644
--- a/util/qemu-sockets.c
+++ b/util/qemu-sockets.c
@@ -1143,29 +1143,6 @@ SocketAddress *socket_remote_address(int fd, Error **errp)
     return socket_sockaddr_to_address(&ss, sslen, errp);
 }
 
-
-void qapi_copy_SocketAddress(SocketAddress **p_dest,
-                             SocketAddress *src)
-{
-    Visitor *ov, *iv;
-    QObject *obj;
-
-    *p_dest = NULL;
-
-    ov = qmp_output_visitor_new(&obj);
-    visit_type_SocketAddress(ov, NULL, &src, &error_abort);
-    visit_complete(ov, &obj);
-    visit_free(ov);
-    if (!obj) {
-        return;
-    }
-
-    iv = qmp_input_visitor_new(obj, true);
-    visit_type_SocketAddress(iv, NULL, p_dest, &error_abort);
-    visit_free(iv);
-    qobject_decref(obj);
-}
-
 char *socket_address_to_string(struct SocketAddress *addr, Error **errp)
 {
     char *buf;
-- 
2.5.5