text: /*
  	Copyright (c) 2013, University of Lugano
  	All rights reserved.
  
  	Redistribution and use in source and binary forms, with or without
  	modification, are permitted provided that the following conditions are met:
      	* Redistributions of source code must retain the above copyright
  		  notice, this list of conditions and the following disclaimer.
  		* Redistributions in binary form must reproduce the above copyright
  		  notice, this list of conditions and the following disclaimer in the
  		  documentation and/or other materials provided with the distribution.
  		* Neither the name of the copyright holders nor the
  		  names of its contributors may be used to endorse or promote products
  		  derived from this software without specific prior written permission.
  
  	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  	AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
  	IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
  	ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
  	DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  	(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  	LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  	ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 
  	THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	
  */
  
  
  #ifndef _STORAGE_H_
  #define _STORAGE_H_
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  #include "paxos.h"
  
  struct storage
  {
  	void* handle;
  	struct
  	{
  		int (*open) (void* handle);
  		int (*close) (void* handle);
  		void (*tx_begin) (void* handle);
  		void (*tx_commit) (void* handle);
  		int (*get) (void* handle, iid_t iid, paxos_accepted* out);
  		int (*put) (void* handle, paxos_accepted* acc);
  		int (*trim) (void* handle, iid_t iid);
  		iid_t (*get_trim_instance) (void* handle);
  	} api;
  };
  
  void storage_init(struct storage* store, int acceptor_id);
  int storage_open(struct storage* store);
  int storage_close(struct storage* store);
  void storage_tx_begin(struct storage* store);
  void storage_tx_commit(struct storage* store);
  int storage_get_record(struct storage* store, iid_t iid, paxos_accepted* out);
  int storage_put_record(struct storage* store, paxos_accepted* acc);
  int storage_trim(struct storage* store, iid_t iid);
  iid_t storage_get_trim_instance(struct storage* store);
  
  void storage_init_mem(struct storage* s, int acceptor_id);
  void storage_init_bdb(struct storage* s, int acceptor_id);
  void storage_init_lmdb(struct storage* s, int acceptor_id);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif
  