* FILE: ntoskrnl/cc/pin.c
* PURPOSE: Implements cache managers pinning interface
*
- * PROGRAMMERS:
+ * PROGRAMMERS: ?
+ Pierre Schweitzer (pierre@reactos.org)
*/
/* INCLUDES ******************************************************************/
{
CCTRACE(CC_API_DEBUG, "FileObject=%p FileOffset=%p Length=%lu Flags=0x%lx -> FALSE\n",
FileObject, FileOffset, Length, Flags);
+ ExRaiseStatus(STATUS_INVALID_PARAMETER);
return FALSE;
}
{
CCTRACE(CC_API_DEBUG, "FileObject=%p FileOffset=%p Length=%lu Flags=0x%lx -> FALSE\n",
FileObject, FileOffset, Length, Flags);
+ ExRaiseStatus(Status);
return FALSE;
}
return FALSE;
}
- if (!NT_SUCCESS(CcReadVirtualAddress(Vacb)))
+ Status = CcReadVirtualAddress(Vacb);
+ if (!NT_SUCCESS(Status))
{
CcRosReleaseVacb(SharedCacheMap, Vacb, FALSE, FALSE, FALSE);
CCTRACE(CC_API_DEBUG, "FileObject=%p FileOffset=%p Length=%lu Flags=0x%lx -> FALSE\n",
FileObject, FileOffset, Length, Flags);
+ ExRaiseStatus(Status);
return FALSE;
}
}
CcRosReleaseVacb(SharedCacheMap, Vacb, TRUE, FALSE, FALSE);
CCTRACE(CC_API_DEBUG, "FileObject=%p FileOffset=%p Length=%lu Flags=0x%lx -> FALSE\n",
FileObject, FileOffset, Length, Flags);
+ ExRaiseStatus(STATUS_INSUFFICIENT_RESOURCES);
return FALSE;
}
iBcb->PFCB.MappedFileOffset = *FileOffset;
iBcb->Vacb = Vacb;
iBcb->Dirty = FALSE;
+ iBcb->Pinned = FALSE;
iBcb->RefCount = 1;
+ ExInitializeResourceLite(&iBcb->Lock);
*pBcb = (PVOID)iBcb;
CCTRACE(CC_API_DEBUG, "FileObject=%p FileOffset=%p Length=%lu Flags=0x%lx -> TRUE Bcb=%p\n",
IN ULONG Flags,
OUT PVOID * Bcb)
{
+ PROS_SHARED_CACHE_MAP SharedCacheMap;
+
CCTRACE(CC_API_DEBUG, "FileOffset=%p FileOffset=%p Length=%lu Flags=0x%lx\n",
FileObject, FileOffset, Length, Flags);
+ ASSERT(FileObject);
+ ASSERT(FileObject->SectionObjectPointer);
+ ASSERT(FileObject->SectionObjectPointer->SharedCacheMap);
+
+ SharedCacheMap = FileObject->SectionObjectPointer->SharedCacheMap;
+ ASSERT(SharedCacheMap);
+ ASSERT(SharedCacheMap->PinAccess);
+
/* no-op for current implementation. */
return TRUE;
}
OUT PVOID * Bcb,
OUT PVOID * Buffer)
{
+ PINTERNAL_BCB iBcb;
+
CCTRACE(CC_API_DEBUG, "FileOffset=%p FileOffset=%p Length=%lu Flags=0x%lx\n",
FileObject, FileOffset, Length, Flags);
if (CcMapData(FileObject, FileOffset, Length, Flags, Bcb, Buffer))
{
if (CcPinMappedData(FileObject, FileOffset, Length, Flags, Bcb))
+ {
+ iBcb = *Bcb;
+
+ ASSERT(iBcb->Pinned == FALSE);
+
+ iBcb->Pinned = TRUE;
+ iBcb->Vacb->PinCount++;
+ CcRosReleaseVacbLock(iBcb->Vacb);
+
+ if (Flags & PIN_EXCLUSIVE)
+ {
+ ExAcquireResourceExclusiveLite(&iBcb->Lock, TRUE);
+ }
+ else
+ {
+ ExAcquireResourceSharedLite(&iBcb->Lock, TRUE);
+ }
+
return TRUE;
+ }
else
CcUnpinData(*Bcb);
}
CcUnpinData (
IN PVOID Bcb)
{
- PINTERNAL_BCB iBcb = Bcb;
-
CCTRACE(CC_API_DEBUG, "Bcb=%p\n", Bcb);
- CcRosReleaseVacb(iBcb->Vacb->SharedCacheMap,
- iBcb->Vacb,
- TRUE,
- iBcb->Dirty,
- FALSE);
- if (--iBcb->RefCount == 0)
- {
- ExFreeToNPagedLookasideList(&iBcbLookasideList, iBcb);
- }
+ CcUnpinDataForThread(Bcb, (ERESOURCE_THREAD)PsGetCurrentThread());
}
/*
IN PVOID Bcb,
IN ERESOURCE_THREAD ResourceThreadId)
{
+ PINTERNAL_BCB iBcb = Bcb;
+
CCTRACE(CC_API_DEBUG, "Bcb=%p ResourceThreadId=%lu\n", Bcb, ResourceThreadId);
- UNIMPLEMENTED;
+ if (iBcb->Pinned)
+ {
+ 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)
+ {
+ ExDeleteResourceLite(&iBcb->Lock);
+ ExFreeToNPagedLookasideList(&iBcbLookasideList, iBcb);
+ }
}
/*
IoStatus->Information = 0;
if (WriteThrough)
{
- KeWaitForSingleObject(&iBcb->Vacb->Mutex,
- Executive,
- KernelMode,
- FALSE,
- NULL);
+ CcRosAcquireVacbLock(iBcb->Vacb, NULL);
if (iBcb->Vacb->Dirty)
{
IoStatus->Status = CcRosFlushVacb(iBcb->Vacb);
{
IoStatus->Status = STATUS_SUCCESS;
}
- KeReleaseMutex(&iBcb->Vacb->Mutex, FALSE);
+ CcRosReleaseVacbLock(iBcb->Vacb);
}
else
{
IoStatus->Status = STATUS_SUCCESS;
}
+ if (iBcb->Pinned)
+ {
+ ExReleaseResourceLite(&iBcb->Lock);
+ iBcb->Pinned = FALSE;
+ CcRosAcquireVacbLock(iBcb->Vacb, NULL);
+ iBcb->Vacb->PinCount--;
+ }
+ ExDeleteResourceLite(&iBcb->Lock);
ExFreeToNPagedLookasideList(&iBcbLookasideList, iBcb);
}
}