1 files changed, 73 insertions, 0 deletions
diff --git a/xbmc/filesystem/DirectoryCache.h b/xbmc/filesystem/DirectoryCache.h
new file mode 100644
index 0000000..2058c78
--- /dev/null
+++ b/xbmc/filesystem/DirectoryCache.h
@@ -0,0 +1,73 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#pragma once
+
+#include "IDirectory.h"
+#include "threads/CriticalSection.h"
+
+#include <map>
+#include <memory>
+#include <set>
+
+class CFileItem;
+
+namespace XFILE
+{
+  class CDirectoryCache
+  {
+    class CDir
+    {
+    public:
+      explicit CDir(DIR_CACHE_TYPE cacheType);
+      CDir(CDir&& dir) = default;
+      CDir& operator=(CDir&& dir) = default;
+      virtual ~CDir();
+
+      void SetLastAccess(unsigned int &accessCounter);
+      unsigned int GetLastAccess() const { return m_lastAccess; }
+
+      std::unique_ptr<CFileItemList> m_Items;
+      DIR_CACHE_TYPE m_cacheType;
+    private:
+      CDir(const CDir&) = delete;
+      CDir& operator=(const CDir&) = delete;
+      unsigned int m_lastAccess;
+    };
+  public:
+    CDirectoryCache(void);
+    virtual ~CDirectoryCache(void);
+    bool GetDirectory(const std::string& strPath, CFileItemList &items, bool retrieveAll = false);
+    void SetDirectory(const std::string& strPath, const CFileItemList &items, DIR_CACHE_TYPE cacheType);
+    void ClearDirectory(const std::string& strPath);
+    void ClearFile(const std::string& strFile);
+    void ClearSubPaths(const std::string& strPath);
+    void Clear();
+    void AddFile(const std::string& strFile);
+    bool FileExists(const std::string& strPath, bool& bInCache);
+#ifdef _DEBUG
+    void PrintStats() const;
+#endif
+  protected:
+    void InitCache(const std::set<std::string>& dirs);
+    void ClearCache(std::set<std::string>& dirs);
+    void CheckIfFull();
+
+    std::map<std::string, CDir> m_cache;
+
+    mutable CCriticalSection m_cs;
+
+    unsigned int m_accessCounter;
+
+#ifdef _DEBUG
+    unsigned int m_cacheHits;
+    unsigned int m_cacheMisses;
+#endif
+  };
+}
+extern XFILE::CDirectoryCache g_directoryCache;