extern NPAGED_LOOKASIDE_LIST iBcbLookasideList;
+/* Counters:
+ * - Number of calls to CcMapData that could wait
+ * - Number of calls to CcMapData that couldn't wait
+ * - Number of calls to CcPinRead that could wait
+ * - Number of calls to CcPinRead that couldn't wait
+ */
+ULONG CcMapDataWait = 0;
+ULONG CcMapDataNoWait = 0;
+ULONG CcPinReadWait = 0;
+ULONG CcPinReadNoWait = 0;
+
/* FUNCTIONS *****************************************************************/
/*
OUT PVOID *pBcb,
OUT PVOID *pBuffer)
{
- ULONG ReadOffset;
+ LONGLONG ReadOffset;
BOOLEAN Valid;
PROS_SHARED_CACHE_MAP SharedCacheMap;
PROS_VACB Vacb;
NTSTATUS Status;
PINTERNAL_BCB iBcb;
- ULONG ROffset;
+ LONGLONG ROffset;
DPRINT("CcMapData(FileObject 0x%p, FileOffset %I64x, Length %lu, Flags 0x%lx,"
" pBcb 0x%p, pBuffer 0x%p)\n", FileObject, FileOffset->QuadPart,
Length, Flags, pBcb, pBuffer);
- ReadOffset = (ULONG)FileOffset->QuadPart;
+ if (Flags & MAP_WAIT)
+ {
+ ++CcMapDataWait;
+ }
+ else
+ {
+ ++CcMapDataNoWait;
+ }
+
+ ReadOffset = FileOffset->QuadPart;
ASSERT(FileObject);
ASSERT(FileObject->SectionObjectPointer);
}
}
- *pBuffer = (PVOID)((ULONG_PTR)(*pBuffer) + ReadOffset % VACB_MAPPING_GRANULARITY);
+ *pBuffer = (PUCHAR)*pBuffer + ReadOffset % VACB_MAPPING_GRANULARITY;
iBcb = ExAllocateFromNPagedLookasideList(&iBcbLookasideList);
if (iBcb == NULL)
{
CCTRACE(CC_API_DEBUG, "FileOffset=%p FileOffset=%p Length=%lu Flags=0x%lx\n",
FileObject, FileOffset, Length, Flags);
+ if (Flags & PIN_WAIT)
+ {
+ ++CcPinReadWait;
+ }
+ else
+ {
+ ++CcPinReadNoWait;
+ }
+
if (CcMapData(FileObject, FileOffset, Length, Flags, Bcb, Buffer))
{
if (CcPinMappedData(FileObject, FileOffset, Length, Flags, Bcb))
iBcb->Pinned = TRUE;
iBcb->Vacb->PinCount++;
- CcRosReleaseVacbLock(iBcb->Vacb);
if (Flags & PIN_EXCLUSIVE)
{
Bcb, Lsn);
iBcb->Dirty = TRUE;
+ if (!iBcb->Vacb->Dirty)
+ {
+ CcRosMarkDirtyVacb(iBcb->Vacb);
+ }
}
{
ExReleaseResourceForThreadLite(&iBcb->Lock, ResourceThreadId);
iBcb->Pinned = FALSE;
- CcRosAcquireVacbLock(iBcb->Vacb, NULL);
iBcb->Vacb->PinCount--;
}
- CcRosReleaseVacb(iBcb->Vacb->SharedCacheMap,
- iBcb->Vacb,
- TRUE,
- iBcb->Dirty,
- FALSE);
-
if (--iBcb->RefCount == 0)
{
+ CcRosReleaseVacb(iBcb->Vacb->SharedCacheMap,
+ iBcb->Vacb,
+ TRUE,
+ iBcb->Dirty,
+ FALSE);
+
ExDeleteResourceLite(&iBcb->Lock);
ExFreeToNPagedLookasideList(&iBcbLookasideList, iBcb);
}
IoStatus->Information = 0;
if (WriteThrough)
{
- CcRosAcquireVacbLock(iBcb->Vacb, NULL);
if (iBcb->Vacb->Dirty)
{
IoStatus->Status = CcRosFlushVacb(iBcb->Vacb);
{
IoStatus->Status = STATUS_SUCCESS;
}
- CcRosReleaseVacbLock(iBcb->Vacb);
}
else
{
{
ExReleaseResourceLite(&iBcb->Lock);
iBcb->Pinned = FALSE;
- CcRosAcquireVacbLock(iBcb->Vacb, NULL);
iBcb->Vacb->PinCount--;
+ ASSERT(iBcb->Vacb->PinCount == 0);
}
+
+ CcRosReleaseVacb(iBcb->Vacb->SharedCacheMap,
+ iBcb->Vacb,
+ TRUE,
+ iBcb->Dirty,
+ FALSE);
+
ExDeleteResourceLite(&iBcb->Lock);
ExFreeToNPagedLookasideList(&iBcbLookasideList, iBcb);
}