1 files changed, 83 insertions, 0 deletions
diff --git a/src/filesystem/DirectoryCache.h b/src/filesystem/DirectoryCache.h
new file mode 100644
index 0000000000..d59f1bb1fd
--- /dev/null
+++ b/src/filesystem/DirectoryCache.h
@@ -0,0 +1,83 @@
+#pragma once
+/*
+ *      Copyright (C) 2005-2013 Team XBMC
+ *      http://xbmc.org
+ *
+ *  This Program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2, or (at your option)
+ *  any later version.
+ *
+ *  This Program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with XBMC; see the file COPYING.  If not, see
+ *  <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "IDirectory.h"
+#include "Directory.h"
+#include "threads/CriticalSection.h"
+
+#include <map>
+#include <set>
+
+class CFileItem;
+
+namespace XFILE
+{
+  class CDirectoryCache
+  {
+    class CDir
+    {
+    public:
+      CDir(DIR_CACHE_TYPE cacheType);
+      virtual ~CDir();
+
+      void SetLastAccess(unsigned int &accessCounter);
+      unsigned int GetLastAccess() const { return m_lastAccess; };
+
+      CFileItemList* m_Items;
+      DIR_CACHE_TYPE m_cacheType;
+    private:
+      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(std::set<std::string>& dirs);
+    void ClearCache(std::set<std::string>& dirs);
+    void CheckIfFull();
+
+    std::map<std::string, CDir*> m_cache;
+    typedef std::map<std::string, CDir*>::iterator iCache;
+    typedef std::map<std::string, CDir*>::const_iterator ciCache;
+    void Delete(iCache i);
+
+    CCriticalSection m_cs;
+
+    unsigned int m_accessCounter;
+
+#ifdef _DEBUG
+    unsigned int m_cacheHits;
+    unsigned int m_cacheMisses;
+#endif
+  };
+}
+extern XFILE::CDirectoryCache g_directoryCache;