-/*
- * Copyright (C) 1995, Index Data I/S
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: cfile.h,v $
- * Revision 1.1 1995-11-30 08:33:12 adam
- * Started work on commit facility.
- *
- */
+/* $Id: cfile.h,v 1.14 2002-08-02 19:26:55 adam Exp $
+ Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002
+ Index Data Aps
+
+This file is part of the Zebra server.
+
+Zebra is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with Zebra; see the file LICENSE.zebra. If not, write to the
+Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.
+*/
+
+
#ifndef CFILE_H
#define CFILE_H
-#define HASH_BUCKET 63
+#include <yaz/yconfig.h>
+
+YAZ_BEGIN_CDECL
+
+#define HASH_BUCKET 15
+
+struct CFile_ph_bucket { /* structure on disc */
+ int no[HASH_BUCKET]; /* block number in original file */
+ int vno[HASH_BUCKET]; /* block number in shadow file */
+ int this_bucket; /* this bucket number */
+ int next_bucket; /* next bucket number */
+};
struct CFile_hash_bucket {
- struct CFile_ph_bucket {
- int no[HASH_BUCKET];
- int vno[HASH_BUCKET];
- int this_bucket;
- int next_bucket;
- } ph;
+ struct CFile_ph_bucket ph;
int dirty;
struct CFile_hash_bucket *h_next, **h_prev;
struct CFile_hash_bucket *lru_next, *lru_prev;
#define HASH_BSIZE sizeof(struct CFile_ph_bucket)
+#define CFILE_FLAT 1
+
typedef struct CFile_struct
{
struct CFile_head {
- int hash_size;
- int next_bucket;
- int next_block;
- int block_size;
+ int state; /* 1 = hash, 2 = flat */
+ int next_block; /* next free block / last block */
+ int block_size; /* mfile/bfile block size */
+ int hash_size; /* no of chains in hash table */
+ int first_bucket; /* first hash bucket */
+ int next_bucket; /* last hash bucket + 1 = first flat bucket */
+ int flat_bucket; /* last flat bucket + 1 */
} head;
- int block_fd;
- int hash_fd;
+ MFile block_mf;
+ MFile hash_mf;
int *array;
struct CFile_hash_bucket **parray;
struct CFile_hash_bucket *bucket_lru_front, *bucket_lru_back;
int bucket_in_memory;
int max_bucket_in_memory;
char *iobuf;
- MFile mf;
+ MFile rmf;
+ int no_hits;
+ int no_miss;
+ Zebra_mutex mutex;
} *CFile;
int cf_close (CFile cf);
-CFile cf_open (MFile mf, const char *cname, const char *fname,
- int block_size, int wflag, int *firstp);
-int cf_read (CFile cf, int no, int offset, int num, void *buf);
-int cf_write (CFile cf, int no, int offset, int num, const void *buf);
+CFile cf_open (MFile mf, MFile_area area, const char *fname, int block_size,
+ int wflag, int *firstp);
+int cf_read (CFile cf, int no, int offset, int nbytes, void *buf);
+int cf_write (CFile cf, int no, int offset, int nbytes, const void *buf);
+void cf_unlink (CFile cf);
void cf_commit (CFile cf);
+YAZ_END_CDECL
+
#endif