Changeset 23488 in vbox for trunk/src/VBox/VMM/VMMAll

Timestamp:

Oct 1, 2009 3:38:06 PM (16 years ago)

Author:

vboxsync

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

53113

Message:

PGM: Lock stats and check for write locks on monitored pages during live save.

File:

• trunk/src/VBox/VMM/VMMAll/PGMAllPhys.cpp (modified) (4 diffs)

trunk/src/VBox/VMM/VMMAll/PGMAllPhys.cpp

@@ -1072 +1072 @@
             unsigned cLocks = PGM_PAGE_GET_WRITE_LOCKS(pPage);
             if (RT_LIKELY(cLocks < PGM_PAGE_MAX_LOCKS - 1))
+            {
+                if (cLocks == 0)
+                    pVM->pgm.s.cWriteLockedPages++;
                 PGM_PAGE_INC_WRITE_LOCKS(pPage);
+            }
             else if (cLocks != PGM_PAGE_GET_WRITE_LOCKS(pPage))
             {
@@ -1170 +1174 @@
             unsigned cLocks = PGM_PAGE_GET_READ_LOCKS(pPage);
             if (RT_LIKELY(cLocks < PGM_PAGE_MAX_LOCKS - 1))
+            {
+                if (cLocks == 0)
+                    pVM->pgm.s.cReadLockedPages++;
                 PGM_PAGE_INC_READ_LOCKS(pPage);
+            }
             else if (cLocks != PGM_PAGE_GET_READ_LOCKS(pPage))
             {
@@ -1293 +1301 @@
         Assert(cLocks > 0);
         if (RT_LIKELY(cLocks > 0 && cLocks < PGM_PAGE_MAX_LOCKS))
+        {
+            if (cLocks == 1)
+            {
+                Assert(pVM->pgm.s.cWriteLockedPages > 0);
+                pVM->pgm.s.cWriteLockedPages--;
+            }
             PGM_PAGE_DEC_WRITE_LOCKS(pPage);
+        }
 
         if (PGM_PAGE_GET_STATE(pPage) == PGM_PAGE_STATE_WRITE_MONITORED)
@@ -1309 +1324 @@
         Assert(cLocks > 0);
         if (RT_LIKELY(cLocks > 0 && cLocks < PGM_PAGE_MAX_LOCKS))
+        {
+            if (cLocks == 1)
+            {
+                Assert(pVM->pgm.s.cReadLockedPages > 0);
+                pVM->pgm.s.cReadLockedPages--;
+            }
             PGM_PAGE_DEC_READ_LOCKS(pPage);
+        }
     }