Add NTOSKRNL/CC/ccinternal.hpp

2024-05-21 14:31:59 +02:00 · 2024-05-21 14:31:59 +02:00 · 25a937916b
commit 25a937916b
parent 49302f5b41
1 changed files with 51 additions and 0 deletions
--- a/NTOSKRNL/CC/ccinternal.hpp
+++ b/NTOSKRNL/CC/ccinternal.hpp
@ -0,0 +1,51 @@
+/*
+ * PROJECT: Alcyone System Kernel
+ * LICENSE: BSD Clause 3
+ * PURPOSE: Cache Controller:: Lazy Writer
+ * NT KERNEL: 5.11.9360
+ * COPYRIGHT:  2023-2029 Dibymartanda Samanta <>
+ */
+
+#include "debug.hpp"
+#include <ntoskrnl.hpp>
+
+
+BOOL
+NTAPI
+IsGoToNextMap(IN PSHARED_CACHE_MAP SharedMap, IN ULONG TargetPages)
+{
+    BOOLEAN Skip = FALSE;
+
+    if (SharedMap->Flags & (0x20 | 0x800))
+        return TRUE;
+
+    if ((SharedMap->OpenCount || SharedMap->DirtyPages) && SharedMap->FileSize.QuadPart)
+    {
+        Skip = TRUE;
+    }
+
+    if (!SharedMap->DirtyPages && Skip)
+        return TRUE;
+
+    if (SharedMap->Flags & SHARE_FL_WAITING_TEARDOWN)
+        return FALSE;
+
+    if (!TargetPages && Skip)
+        return TRUE;
+
+    SharedMap->LazyWritePassCount++;
+
+    if ((SharedMap->LazyWritePassCount & 0xF) && (SharedMap->Flags & SHARE_FL_MODIFIED_NO_WRITE) &&
+        CcCapturedSystemSize != MmSmallSystem && SharedMap->DirtyPages < 0x40 && Skip)
+    {
+        return TRUE;
+    }
+
+    if ((SharedMap->FileObject->Flags & 0x8000) && SharedMap->OpenCount &&
+        CcCanIWrite(SharedMap->FileObject, 0x40000, 0, 0xFF) && Skip)
+    {
+        return TRUE;
+    }
+
+    return FALSE;
+}