Changeset 70114 in vbox

Timestamp:

Dec 13, 2017 3:52:42 PM (7 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

119663

Message:

(XP)COM: optimize safearray copying (partially, only dealing with the simple case where types are identical) and destruction, making the GUI have less overhead for some API calls

Location:

trunk

Files:

• include/VBox/com/array.h (modified) (1 diff)
• src/VBox/Frontends/VirtualBox/src/globals/COMDefs.h (modified) (1 diff)

trunk/include/VBox/com/array.h

@@ -239 +239 @@
 
     /** Initializes memory occupied by aElem. */
-    static void Uninit(T &aElem) { aElem = 0; }
+    static void Uninit(T &aElem) { RT_NOREF(aElem); }
 
     /** Creates a deep copy of aFrom and stores it in aTo. */

trunk/src/VBox/Frontends/VirtualBox/src/globals/COMDefs.h

@@ -271 +271 @@
     {
         aVec.resize(static_cast<int>(aArr.size()));
-        for (int i = 0; i < aVec.size(); ++i)
-            aVec[i] = aArr[i];
+        memcpy(&aVec[0], aArr.raw(), aArr.size() * sizeof(T));
     }