136 lines
3.9 KiB
C++
136 lines
3.9 KiB
C++
//----------------------------------------------------------------------------
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//
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// Memory cache object.
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//
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// Copyright (C) Microsoft Corporation, 1997-2001.
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//
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//----------------------------------------------------------------------------
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#ifndef __MCACHE_HPP__
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#define __MCACHE_HPP__
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typedef struct _CACHE* PCACHE;
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//----------------------------------------------------------------------------
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//
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// MemoryCache.
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//
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//----------------------------------------------------------------------------
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class MemoryCache
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{
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public:
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MemoryCache(void);
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~MemoryCache(void);
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HRESULT Read(IN ULONG64 BaseAddress,
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IN PVOID UserBuffer,
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IN ULONG TransferCount,
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OUT PULONG BytesRead);
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HRESULT Write(IN ULONG64 BaseAddress,
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IN PVOID UserBuffer,
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IN ULONG TransferCount,
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OUT PULONG BytesWritten);
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void Add(IN ULONG64 BaseAddress,
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IN PVOID UserBuffer,
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IN ULONG Length);
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void Remove(IN ULONG64 BaseAddress,
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IN ULONG Length);
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void Empty(void);
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void ParseCommands(void);
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//
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// Internal methods.
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//
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virtual HRESULT ReadUncached(IN ULONG64 BaseAddress,
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IN PVOID UserBuffer,
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IN ULONG TransferCount,
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OUT PULONG BytesRead) = 0;
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virtual HRESULT WriteUncached(IN ULONG64 BaseAddress,
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IN PVOID UserBuffer,
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IN ULONG TransferCount,
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OUT PULONG BytesWritten) = 0;
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PCACHE Lookup(ULONG64 Offset,
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ULONG Length,
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PULONG LengthUsed);
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void InsertNode(IN PCACHE node);
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PUCHAR Alloc(IN ULONG Length);
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VOID Free(IN PUCHAR Memory,
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IN ULONG Length);
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VOID PurgeType(ULONG type);
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VOID SetForceDecodePtes(BOOL Enable);
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void Dump(void);
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void DumpNode(PCACHE Node);
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ULONG m_MaxSize;
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ULONG m_UserSize;
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BOOL m_DecodePTEs;
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BOOL m_ForceDecodePTEs;
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BOOL m_Suspend;
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ULONG m_Reads, m_CachedReads, m_UncachedReads;
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ULONG64 m_CachedBytes, m_UncachedBytes;
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ULONG m_Misses;
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ULONG m_Size;
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ULONG m_NodeCount;
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BOOL m_PurgeOverride;
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PCACHE m_Root;
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};
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//----------------------------------------------------------------------------
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//
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// VirtualMemoryCache.
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//
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//----------------------------------------------------------------------------
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class VirtualMemoryCache : public MemoryCache
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{
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public:
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virtual HRESULT ReadUncached(IN ULONG64 BaseAddress,
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IN PVOID UserBuffer,
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IN ULONG TransferCount,
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OUT PULONG BytesRead);
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virtual HRESULT WriteUncached(IN ULONG64 BaseAddress,
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IN PVOID UserBuffer,
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IN ULONG TransferCount,
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OUT PULONG BytesWritten);
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};
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extern VirtualMemoryCache g_VirtualCache;
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//----------------------------------------------------------------------------
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//
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// PhysicalMemoryCache.
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//
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//----------------------------------------------------------------------------
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class PhysicalMemoryCache : public MemoryCache
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{
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public:
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virtual HRESULT ReadUncached(IN ULONG64 BaseAddress,
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IN PVOID UserBuffer,
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IN ULONG TransferCount,
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OUT PULONG BytesRead);
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virtual HRESULT WriteUncached(IN ULONG64 BaseAddress,
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IN PVOID UserBuffer,
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IN ULONG TransferCount,
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OUT PULONG BytesWritten);
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};
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extern PhysicalMemoryCache g_PhysicalCache;
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extern BOOL g_PhysicalCacheActive;
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#define InvalidateMemoryCaches() \
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( g_VirtualCache.Empty(), g_PhysicalCache.Empty() )
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#endif // #ifndef __MCACHE_HPP__
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