Changeset 29608 in vbox for trunk/src/VBox

Timestamp:

May 18, 2010 10:02:47 AM (15 years ago)

Author:

vboxsync

Message:

Try to trick the optimizer to leave the page touching code in place.

File:

• trunk/src/VBox/Additions/common/VBoxService/VBoxServicePageSharing.cpp (modified) (2 diffs)

trunk/src/VBox/Additions/common/VBoxService/VBoxServicePageSharing.cpp

@@ -153 +153 @@
                 if (pRegion != (char *)pModule->Info.modBaseAddr)
                 {
-                    char dummy = 0;
                     /* Touch all pages. */
                     while (pRegion < (char *)MemInfo.BaseAddress + MemInfo.RegionSize)
                     {
+                        /* Try to trick the optimizer to leave the page touching code in place. */
                         dummy += *(char *)pRegion;
                         pRegion += PAGE_SIZE;
@@ -196 +196 @@
         VBoxServiceVerbose(3, "VbglR3RegisterSharedModule failed with %d\n", rc);
     
-
 end:
     RTMemFree(pVersionInfo);