Initial MSVC 2008 projects workspace

L2C_Server/utils/IdFactory.h

@@ -0,0 +1,44 @@
+#pragma once
+#include "l2c_utils.h"
+
+// warning C4290: C++ exception specification ignored except to indicate a function is not __declspec(nothrow)
+#pragma warning (disable: 4290)
+
+class Exception;
+
+class IdFactory
+{
+public:
+	static const unsigned int MIN_OBJECT_ID = 0x10000000;
+	static const unsigned int MAX_OBJECT_ID = 0x7FFFFFFF;
+	static const unsigned int OBJECT_ID_COUNT = MAX_OBJECT_ID - MIN_OBJECT_ID + 1;
+
+public:
+	class NoFreeObjectIdException: public std::exception {};
+
+public:
+	IdFactory();
+	~IdFactory();
+	bool init();
+	void clear();
+
+public:
+	unsigned int getUsedCount();
+	unsigned int getNextObjectId() throw(NoFreeObjectIdException);
+	bool         releaseObjectId( unsigned int o );
+	bool         isUsedObjectId( unsigned int o );
+
+public:
+	unsigned long long int getUsedMemoryBytes() const;
+
+protected:
+	unsigned int  findUnusedOid() const;
+	void          fillObjectIdsFromDB();
+	void          fillObjectIdsFromDB_insertOne( unsigned int oid );
+
+protected:
+	std::bitset<OBJECT_ID_COUNT> *m_bitset;
+	unsigned long long int        m_usedMemory;
+	CriticalSection               m_lock;
+	unsigned int                  m_lastOid;
+};