-/*
- * Copyright (C) 1995, Index Data I/S
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: cfile.h,v $
- * Revision 1.2 1995-12-01 11:37:23 adam
- * Cached/commit files implemented as meta-files.
- *
- * Revision 1.1 1995/11/30 08:33:12 adam
- * Started work on commit facility.
- *
- */
+/* $Id: cfile.h,v 1.22 2007-01-15 20:08:23 adam Exp $
+ Copyright (C) 1995-2007
+ 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 this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 */
+ zint no[HASH_BUCKET]; /* block number in original file */
+ zint vno[HASH_BUCKET]; /* block number in shadow file */
+ zint this_bucket; /* this bucket number */
+ zint 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 */
+ zint next_block; /* next free block / last block */
+ int block_size; /* mfile/bfile block size */
+ int hash_size; /* no of chains in hash table */
+ zint first_bucket; /* first hash bucket */
+ zint next_bucket; /* last hash bucket + 1 = first flat bucket */
+ zint flat_bucket; /* last flat bucket + 1 */
} head;
MFile block_mf;
MFile hash_mf;
- int *array;
+ zint *array;
struct CFile_hash_bucket **parray;
struct CFile_hash_bucket *bucket_lru_front, *bucket_lru_back;
int dirty;
- int bucket_in_memory;
- int max_bucket_in_memory;
+ zint bucket_in_memory;
+ zint max_bucket_in_memory;
char *iobuf;
MFile rmf;
+ int no_hits;
+ int no_miss;
+ Zebra_mutex mutex;
} *CFile;
int cf_close (CFile cf);
-CFile cf_open (MFile mf, 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);
-void cf_commit (CFile cf);
+CFile cf_open (MFile mf, MFile_area area, const char *fname, int block_size,
+ int wflag, int *firstp);
+int cf_read (CFile cf, zint no, int offset, int nbytes, void *buf);
+int cf_write (CFile cf, zint no, int offset, int nbytes, const void *buf);
+int cf_commit (CFile cf) ZEBRA_GCC_ATTR((warn_unused_result));
+
+YAZ_END_CDECL
#endif
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+