[fireball] 38506: - CcCanIWrite reports TRUE now, since we don't have situations yet when writing is not possible. - CcSetReadAheadGranularity is ignored for now and won't spam debug log with unimplemented messages. - CcMapData ignores the MAP_WAIT flag, it's not much of a deal for now.

Author: fireball
Date: Fri Jan  2 06:26:07 2009
New Revision: 38506

URL: http://svn.reactos.org/svn/reactos?rev=38506&view=rev
Log:
- CcCanIWrite reports TRUE now, since we don't have situations yet when writing is not
possible.
- CcSetReadAheadGranularity is ignored for now and won't spam debug log with
unimplemented messages.
- CcMapData ignores the MAP_WAIT flag, it's not much of a deal for now.

Modified:
    branches/cache_manager_rewrite/cc/cacheman.c
    branches/cache_manager_rewrite/cc/copy.c
    branches/cache_manager_rewrite/cc/pin.c

Modified: branches/cache_manager_rewrite/cc/cacheman.c
URL:
http://svn.reactos.org/svn/reactos/branches/cache_manager_rewrite/cc/cachem…
==============================================================================
--- branches/cache_manager_rewrite/cc/cacheman.c [iso-8859-1] (original)
+++ branches/cache_manager_rewrite/cc/cacheman.c [iso-8859-1] Fri Jan  2 06:26:07 2009
@@ -113,8 +113,8 @@
  * @unimplemented
  */
 VOID NTAPI
-CcSetReadAheadGranularity (IN PFILE_OBJECT FileObject, 
+CcSetReadAheadGranularity (IN PFILE_OBJECT FileObject,
                            IN ULONG Granularity)
 {
-    UNIMPLEMENTED;
+    DPRINT("CcSetReadAheadGranularity(0x%p 0x%x)\n", FileObject, Granularity);
 }

Modified: branches/cache_manager_rewrite/cc/copy.c
URL:
http://svn.reactos.org/svn/reactos/branches/cache_manager_rewrite/cc/copy.c…
==============================================================================
--- branches/cache_manager_rewrite/cc/copy.c [iso-8859-1] (original)
+++ branches/cache_manager_rewrite/cc/copy.c [iso-8859-1] Fri Jan  2 06:26:07 2009
@@ -67,18 +67,18 @@
  * @unimplemented
  */
 BOOLEAN NTAPI
-CcCanIWrite (IN PFILE_OBJECT FileObject, 
-             IN ULONG BytesToWrite, 
-             IN BOOLEAN Wait, 
+CcCanIWrite (IN PFILE_OBJECT FileObject,
+             IN ULONG BytesToWrite,
+             IN BOOLEAN Wait,
              IN BOOLEAN Retrying)
 {
-    UNIMPLEMENTED;
-    return FALSE;
+    /* Our cache is always ready for writes */
+    return TRUE;
 }
 
 BOOLEAN NTAPI
 CcCopyRead (IN PFILE_OBJECT FileObject,
-            IN PLARGE_INTEGER FileOffset, 
+            IN PLARGE_INTEGER FileOffset,
             IN ULONG Length, 
             IN BOOLEAN Wait, 
             OUT PVOID Buffer, 

Modified: branches/cache_manager_rewrite/cc/pin.c
URL:
http://svn.reactos.org/svn/reactos/branches/cache_manager_rewrite/cc/pin.c?…
==============================================================================
--- branches/cache_manager_rewrite/cc/pin.c [iso-8859-1] (original)
+++ branches/cache_manager_rewrite/cc/pin.c [iso-8859-1] Fri Jan  2 06:26:07 2009
@@ -53,14 +53,14 @@
     ASSERT (FileOffset);
     ASSERT (piBcb);
     ASSERT (pBuffer);
-	ASSERT (Flags & MAP_WAIT);
+	//ASSERT (Flags & MAP_WAIT);
 
     if (!(Flags & MAP_WAIT))
     {
-		DPRINT1("Reading without MAP_WAIT flag is not implented yet.\n");
-        *piBcb = NULL;
-        *pBuffer = NULL;
-        return FALSE;
+		DPRINT1("Reading without MAP_WAIT flag!\n");
+        //*piBcb = NULL;
+        //*pBuffer = NULL;
+        //return FALSE;
 	}
 
     Bcb = FileObject->SectionObjectPointer->SharedCacheMap;
@@ -263,7 +263,7 @@
  * @unimplemented
  */
 VOID NTAPI
-CcUnpinDataForThread (IN PVOID Bcb, 
+CcUnpinDataForThread (IN PVOID Bcb,
                       IN ERESOURCE_THREAD ResourceThreadId)
 {
     UNIMPLEMENTED;
@@ -275,18 +275,39 @@
 VOID NTAPI
 CcRepinBcb (IN PVOID Bcb)
 {
-//  PINTERNAL_BCB iBcb = Bcb;
+#if 0
+    PINTERNAL_BCB iBcb = Bcb;
 //  iBcb->RefCount++;
-    UNIMPLEMENTED;
-}
-
-/*
- * @unimplemented
- */
-VOID NTAPI
-CcUnpinRepinnedBcb (IN PVOID Bcb, 
-                    IN BOOLEAN WriteThrough, 
-                    IN PIO_STATUS_BLOCK IoStatus)
-{
-    KeBugCheck(CACHE_MANAGER);
-}
+    ExAcquireFastMutex (&CcCacheViewLock);
+    iBcb->Bcb->CacheView[iBcb->Index]->RefCount++;
+    ExReleaseFastMutex (&CcCacheViewLock);
+#endif
+}
+
+/*
+ * @implemented
+ */
+VOID NTAPI
+CcUnpinRepinnedBcb (IN PVOID Bcb,
+                    IN BOOLEAN WriteThrough,
+                    OUT PIO_STATUS_BLOCK IoStatus)
+{
+#if 0
+    PINTERNAL_BCB iBcb = Bcb;
+
+    DPRINT ("CcUnpinRepinnedBcb(%x)\n", Bcb);
+
+    ExAcquireFastMutex (&CcCacheViewLock);
+    iBcb->Bcb->CacheView[iBcb->Index]->RefCount--;
+    if (iBcb->Bcb->CacheView[iBcb->Index]->RefCount == 0)
+    {
+        RemoveEntryList (&iBcb->Bcb->CacheView[iBcb->Index]->ListEntry);
+        InsertHeadList (&CcFreeCacheViewListHead,
&iBcb->Bcb->CacheView[iBcb->Index]->ListEntry);
+    }
+    ExReleaseFastMutex (&CcCacheViewLock);
+    ExFreeToNPagedLookasideList (&iBcbLookasideList, iBcb);
+#endif
+    IoStatus->Status = STATUS_SUCCESS;
+
+    DPRINT ("CcUnpinRepinnedBcb done\n");
+}