Changeset 40741 in vbox

Timestamp:

Apr 2, 2012 12:12:18 PM (13 years ago)

Author:

vboxsync

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

77219

Message:

SUPDrv.c: Use NIL_RTSPINLOCK and clarification comment.

File:

• trunk/src/VBox/HostDrivers/Support/SUPDrv.c (modified) (3 diffs)

trunk/src/VBox/HostDrivers/Support/SUPDrv.c

@@ -4908 +4908 @@
     supdrvGipInit(pDevExt, pGip, HCPhysGip, RTTimeSystemNanoTS(), 1000000000 / u32Interval /*=Hz*/, cCpus);
 
+    /* Creating spinlocks can fail (in theory). supdrvGipInit() returns void. */
     rc = RTSpinlockCreate(&pGip->Spinlock);
     if (RT_FAILURE(rc))
@@ -4983 +4984 @@
     {
         supdrvGipTerm(pDevExt->pGip);
-        if (pDevExt->pGip->Spinlock)
+        if (pDevExt->pGip->Spinlock != NIL_RTSPINLOCK)
         {
             RTSpinlockDestroy(pDevExt->pGip->Spinlock);
@@ -5496 +5497 @@
     pGip->cPossibleCpus         = RTMpGetCount();
     pGip->idCpuMax              = RTMpGetMaxCpuId();
-    pGip->Spinlock              = NULL;
+    pGip->Spinlock              = NIL_RTSPINLOCK;
     for (i = 0; i < RT_ELEMENTS(pGip->aiCpuFromApicId); i++)
         pGip->aiCpuFromApicId[i]    = 0;