56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
/*=======================================================================
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* File name: IVEntry.h
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* Author: Zongyue Qin
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* Mail: qinzongyue@pku.edu.cn
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* Last Modified: 2018-01-30
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* Description: head file of IVEntry, the most basic unit of IVArray
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* =====================================================================*/
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#include "../../Util/Util.h"
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#include "../../Util/VList.h"
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using namespace std;
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class IVEntry
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{
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bool usedFlag; // mark if the entry is used
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bool dirtyFlag;
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bool cacheFlag;
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unsigned store; //index of block where value is stored
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// pointer to id for LRU list
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int prevID;
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int nextID;
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Bstr* value;
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public:
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IVEntry();
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void setBstr(const Bstr* _value);
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bool getBstr(char *& _str, unsigned& _len, bool if_copy = true) const;
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void setBstr(const char *_str, unsigned _len);
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void setStore(unsigned _store);
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unsigned getStore() const;
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void setUsedFlag(bool _flag);
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bool isUsed() const;
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void setDirtyFlag(bool _flag);
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bool isDirty() const;
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void setCacheFlag(bool _flag);
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bool inCache() const;
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void release();
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void Copy(const IVEntry& _entry);
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void setPrev(int ID);
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int getPrev() const;
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void setNext(int ID);
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int getNext() const;
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~IVEntry();
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};
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