Changeset 19628 in vbox for trunk

Timestamp:

May 12, 2009 2:16:11 PM (16 years ago)

Author:

vboxsync

Message:

Lock counter instead of a lock flag.

Location:

trunk/src/VBox/VMM

Files:

• PGMInternal.h (modified) (4 diffs)
• VMMAll/PGMAllMap.cpp (modified) (1 diff)
• VMMAll/PGMAllPool.cpp (modified) (1 diff)

trunk/src/VBox/VMM/PGMInternal.h

@@ -1614 +1614 @@
     bool volatile       fReusedFlushPending;
     /** Used to indicate that this page can't be flushed. Important for cr3 root pages or shadow pae pd pages). */
-    bool                fLocked;
+    uint8_t             cLocked;
 } PGMPOOLPAGE, *PPGMPOOLPAGE, **PPPGMPOOLPAGE;
 /** Pointer to a const pool page. */
@@ -4433 +4433 @@
 DECLINLINE(void) pgmPoolLockPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
 {
-    Assert(!pPage->fLocked);
-    pPage->fLocked = true;
+    pPage->cLocked++;
 }
 
@@ -4446 +4445 @@
 DECLINLINE(void) pgmPoolUnlockPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
 {
-    Assert(pPage->fLocked);
-    pPage->fLocked = false;
+    Assert(pPage->cLocked);
+    pPage->cLocked--;
 }
 
@@ -4459 +4458 @@
 DECLINLINE(bool) pgmPoolIsPageLocked(PPGM pPGM, PPGMPOOLPAGE pPage)
 {
-    if (pPage->fLocked)
+    if (pPage->cLocked)
     {
         LogFlow(("pgmPoolIsPageLocked found root page %d\n", pPage->enmKind));

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

@@ -577 +577 @@
                 PCPGMPOOLPAGE   pPoolPagePd = pgmPoolGetPage(pPool, pShwPdpt->a[iPdpt].u & X86_PDPE_PG_MASK);
                 AssertFatal(pPoolPagePd);
-                AssertMsg(pPoolPagePd->fLocked, (".idx=%d .type=%d\n", pPoolPagePd->idx, pPoolPagePd->enmKind));
+                AssertMsg(pPoolPagePd->cLocked, (".idx=%d .type=%d\n", pPoolPagePd->idx, pPoolPagePd->enmKind));
                 break;
             }

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

@@ -3864 +3864 @@
         pPage->iAgePrev  = NIL_PGMPOOL_IDX;
 #endif
-        pPage->fLocked   = false;
+        pPage->cLocked   = 0;
     }
     pPool->aPages[pPool->cCurPages - 1].iNext = NIL_PGMPOOL_IDX;