fix indentation

add space after comma
add space after equal
add comments in vio_close_shared_memory()

sql/mysqld.cc

@@ -3853,31 +3853,31 @@ pthread_handler_decl(handle_connections_shared_memory,arg)
       goto errorconn;
     }
     strmov(suffix_pos, "CLIENT_WROTE");
-    if ((event_client_wrote= CreateEvent(0,FALSE,FALSE,tmp)) == 0)
+    if ((event_client_wrote= CreateEvent(0, FALSE, FALSE, tmp)) == 0)
     {
       errmsg= "Could not create client write event";
       goto errorconn;
     }
     strmov(suffix_pos, "CLIENT_READ");
-    if ((event_client_read= CreateEvent(0,FALSE,FALSE,tmp)) == 0)
+    if ((event_client_read= CreateEvent(0, FALSE, FALSE, tmp)) == 0)
     {
       errmsg= "Could not create client read event";
       goto errorconn;
     }
     strmov(suffix_pos, "SERVER_READ");
-    if ((event_server_read= CreateEvent(0,FALSE,FALSE,tmp)) == 0)
+    if ((event_server_read= CreateEvent(0, FALSE, FALSE, tmp)) == 0)
     {
       errmsg= "Could not create server read event";
       goto errorconn;
     }
     strmov(suffix_pos, "SERVER_WROTE");
-    if ((event_server_wrote= CreateEvent(0,FALSE,FALSE,tmp)) == 0)
+    if ((event_server_wrote= CreateEvent(0, FALSE, FALSE, tmp)) == 0)
     {
       errmsg= "Could not create server write event";
       goto errorconn;
     }
     strmov(suffix_pos, "CONNECTION_CLOSED");
-    if ((event_conn_closed= CreateEvent(0,TRUE,FALSE,tmp)) == 0)
+    if ((event_conn_closed= CreateEvent(0, TRUE , FALSE, tmp)) == 0)
     {
       errmsg= "Could not create closed connection event";
       goto errorconn;
@@ -3927,13 +3927,20 @@ errorconn:
 	      NullS);
       sql_perror(buff);
     }
-    if (handle_client_file_map) CloseHandle(handle_client_file_map);
-    if (handle_client_map)	UnmapViewOfFile(handle_client_map);
-    if (event_server_wrote)	CloseHandle(event_server_wrote);
-    if (event_server_read)	CloseHandle(event_server_read);
-    if (event_client_wrote)	CloseHandle(event_client_wrote);
-    if (event_client_read)	CloseHandle(event_client_read);
-    if (event_conn_closed)	CloseHandle(event_conn_closed);
+    if (handle_client_file_map) 
+      CloseHandle(handle_client_file_map);
+    if (handle_client_map)
+      UnmapViewOfFile(handle_client_map);
+    if (event_server_wrote)
+      CloseHandle(event_server_wrote);
+    if (event_server_read)
+      CloseHandle(event_server_read);
+    if (event_client_wrote)
+      CloseHandle(event_client_wrote);
+    if (event_client_read)
+      CloseHandle(event_client_read);
+    if (event_conn_closed)
+      CloseHandle(event_conn_closed);
     delete thd;
   }
 

vio/vio.c

@@ -179,16 +179,16 @@ Vio *vio_new_win32shared_memory(NET *net,HANDLE handle_file_map, HANDLE handle_m
   if ((vio = (Vio*) my_malloc(sizeof(Vio),MYF(MY_WME))))
   {
     vio_reset(vio, VIO_TYPE_SHARED_MEMORY, 0, 0, TRUE);
-    vio->handle_file_map = handle_file_map;
-    vio->handle_map = handle_map;
-    vio->event_server_wrote = event_server_wrote;
-    vio->event_server_read = event_server_read;
-    vio->event_client_wrote = event_client_wrote;
-    vio->event_client_read = event_client_read;
-    vio->event_conn_closed = event_conn_closed;
-    vio->shared_memory_remain = 0;
-    vio->shared_memory_pos = handle_map;
-    vio->net = net;
+    vio->handle_file_map= handle_file_map;
+    vio->handle_map= handle_map;
+    vio->event_server_wrote= event_server_wrote;
+    vio->event_server_read= event_server_read;
+    vio->event_client_wrote= event_client_wrote;
+    vio->event_client_read= event_client_read;
+    vio->event_conn_closed= event_conn_closed;
+    vio->shared_memory_remain= 0;
+    vio->shared_memory_pos= handle_map;
+    vio->net= net;
     strmov(vio->desc, "shared memory");
   }
   DBUG_RETURN(vio);

vio/viosocket.c

@@ -390,7 +390,7 @@ int vio_read_shared_memory(Vio * vio, gptr buf, int size)
          WAIT_OBJECT_0+1 - event from vio->event_conn_closed. We can't read anything
          WAIT_ABANDONED_0 and WAIT_TIMEOUT - fail.  We can't read anything
       */
-      if (WaitForMultipleObjects(2,(HANDLE*)&events,FALSE,
+      if (WaitForMultipleObjects(2, (HANDLE*)&events,FALSE,
                                  vio->net->read_timeout*1000) != WAIT_OBJECT_0)
       {
         DBUG_RETURN(-1);
@@ -440,7 +440,8 @@ int vio_write_shared_memory(Vio * vio, const gptr buf, int size)
   current_postion = buf;
   while (remain != 0)
   {
-    if (WaitForSingleObject(vio->event_server_read,vio->net->write_timeout*1000) != WAIT_OBJECT_0)
+    if (WaitForSingleObject(vio->event_server_read, vio->net->write_timeout*1000) 
+                            != WAIT_OBJECT_0)
     {
       DBUG_RETURN(-1);
     };
@@ -467,8 +468,16 @@ int vio_close_shared_memory(Vio * vio)
   DBUG_ENTER("vio_close_shared_memory");
   if (vio->type != VIO_CLOSED)
   {
+    /*
+      Set event_conn_closed for notification of both client and server that
+      connection is closed
+    */
     SetEvent(vio->event_conn_closed);
-    r=UnmapViewOfFile(vio->handle_map) || CloseHandle(vio->event_server_wrote) ||
+    /*
+      Close all handlers. UnmapViewOfFile and CloseHandle return non-zero
+      result if they are success.
+    */
+    r= UnmapViewOfFile(vio->handle_map) || CloseHandle(vio->event_server_wrote) ||
        CloseHandle(vio->event_server_read) || CloseHandle(vio->event_client_wrote) ||
        CloseHandle(vio->event_client_read) || CloseHandle(vio->handle_file_map);
     if (!r)