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// -*- C++ -*-
//=============================================================================
/**
* @file Update_Manager.h
*
* $Id$
*
* @author Huang-Ming Huang <hh1@cse.wustl.edu>
*/
//=============================================================================
#ifndef UPDATE_MANAGER_H
#define UPDATE_MANAGER_H
#include "ace/Synch_T.h"
#include "Dynamic_Bitset.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
typedef Dynamic_Bitset bit_vector;
/**
* @class Update_Manager
*
* @brief Manages the set_update() requests to the replicas for in AMI replication strategy.
* Once the primary get the first n replies from the backup replicas and n >=
* transaction_depth, it will signal the event specified in the constructor.
*/
class Update_Manager
{
public:
Update_Manager(ACE_Auto_Event& evt,
int num_backups,
int transaction_depth,
bool& success);
~Update_Manager();
void handle_reply(int id);
void handle_exception(int id);
private:
ACE_Auto_Event& evt_;
bit_vector replied_;
bit_vector signal_condition_;
bit_vector suicide_condition_;
int num_backups_;
int transaction_level_;
bool& success_;
ACE_Thread_Mutex mutex_;
};
#endif
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