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/*

* URLSeen.h

*

* Created on: Apr 9, 2009

* Author: luo

*/

#ifndef URLSEEN_H_

#define URLSEEN_H_

#include "../../util/btree-f/btree.h"

#include "../../util/lru/Basic_LRU.h"

#include "../../util/thread_print/thread_print.h"

#include "../../util/rwlock_fcfs/pthread/rwlock_fcfs.h"

#include "../../global.h"

#include "../../util/RabinHash/rabinhash64.h"

class URLSeen {

private:

int tid;

// int cache_counter;

std::string filename;

BTTableClass btree_writer;/*,btree_reader;*/

long Root; // fake pointer to the root node

long NumNodes; // number of nodes in the B-tree

long NumItems; // number of bytes per node

NodeType nodetype;

// BTTableClass btree_reader;

RabinHashFunction64 rabin;

Basic_LRU LRUCacher;

#ifdef DEBUG

Thread_print tp;

#endif

// pthread_rwlock_fcfs_t* rwlock_cache, *rwlock_btree;

pthread_rwlock_t /*p_rwlock_cache,*/ p_rwlock_btree;

pthread_mutex_t cache_lock;

// pthread_mutex_t flag_lock;

// int adjust_flag;

bool check_cache(const long long);

bool check_file(const long long);

// bool getLock_r_cache();

bool getLock_r_file();

// bool getLock_w_cache();

bool getLock_w_file();

// bool releaseLock_cache();

bool releaseLock_file();

public:

URLSeen(int id);

~URLSeen();

long long hashurl(struct page_link*);

long long hashurl(struct page_link*, long long);

bool check(long long);

bool add(struct page_link*);

bool add(long long);

};

#endif /* URLSEEN_H_ */