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126 lines
3.5 KiB
C++
126 lines
3.5 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_ASYNC_FILE_MANAGER_H
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#define NL_ASYNC_FILE_MANAGER_H
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#include "types_nl.h"
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#include "task_manager.h"
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namespace NLMISC
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{
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/**
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* CAsyncFileManager is a class that manage file loading in a seperate thread
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* \author Matthieu Besson
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* \author Nevrax France
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* \date 2002
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*/
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class CAsyncFileManager : public CTaskManager
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{
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NLMISC_SAFE_SINGLETON_DECL(CAsyncFileManager);
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CAsyncFileManager() {}
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public:
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// Must be called instead of constructing the object
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// static CAsyncFileManager &getInstance ();
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// NB: release the singleton, but assert if there is any pending loading tasks.
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// Each system that use the async file manager should ensure it has no more pending task in it
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static void terminate ();
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// Do not use these methods with the bigfile manager
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void loadFile (const std::string &fileName, uint8 **pPtr);
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void loadFiles (const std::vector<std::string> &vFileNames, const std::vector<uint8**> &vPtrs);
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void signal (bool *pSgn); // Signal a end of loading for a group of "mesh or file" added
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void cancelSignal (bool *pSgn);
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/**
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* CCancelCallback is an interface that is used in call to CAsyncFileManager::cancelLoad.
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* This class contains one method that is called for each task in the async file loader.
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* If the method returns true, then the task is removed and cancelLoad return.
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* \author Boris Boucher
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* \author Nevrax France
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* \date 10/2002
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*/
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class ICancelCallback
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{
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public:
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virtual ~ICancelCallback() {}
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virtual bool callback(const IRunnable *prunnable) const =0;
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};
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/// Add a load task in the CAsyncFileManager task list.
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void addLoadTask(IRunnable *ploadTask);
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/** Call this method to cancel a programmed load.
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* \return False if the task either already ended or running.
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*/
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bool cancelLoadTask(const ICancelCallback &cancelCallBack);
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private:
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// CAsyncFileManager (); // Singleton mode -> access it with the getInstance function
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// static CAsyncFileManager *_Singleton;
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// All the tasks
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// -------------
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// Load a file
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class CFileLoad : public IRunnable
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{
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std::string _FileName;
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uint8 **_ppFile;
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public:
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CFileLoad (const std::string& sFileName, uint8 **ppFile);
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void run (void);
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void getName (std::string &result) const;
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};
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// Load multiple files
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class CMultipleFileLoad : public IRunnable
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{
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std::vector<std::string> _FileNames;
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std::vector<uint8**> _Ptrs;
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public:
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CMultipleFileLoad (const std::vector<std::string> &vFileNames, const std::vector<uint8**> &vPtrs);
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void run (void);
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void getName (std::string &result) const;
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};
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// Signal
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class CSignal : public IRunnable
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{
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public:
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bool *Sgn;
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public:
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CSignal (bool *pSgn);
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void run (void);
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void getName (std::string &result) const;
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};
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};
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} // NLMISC
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#endif // NL_ASYNC_FILE_MANAGER_H
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/* End of async_file_manager.h */
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