-/*
- * Copyright (c) 1995-1996, Index Data.
- * See the file LICENSE for details.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: isamc-p.h,v $
- * Revision 1.3 1996-11-04 14:08:55 adam
- * Optimized free block usage.
- *
- * Revision 1.2 1996/11/01 08:59:13 adam
- * First version of isc_merge that supports update/delete.
- *
- * Revision 1.1 1996/10/29 13:40:47 adam
- * First work.
- *
- */
-
-#include <bfile.h>
-#include <isamc.h>
+/* $Id: isamc-p.h,v 1.15 2005-04-19 08:44:30 adam Exp $
+ Copyright (C) 1995-2005
+ 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.
+*/
+
+
+
+#include <idzebra/bfile.h>
+#include <idzebra/isamc.h>
+
+YAZ_BEGIN_CDECL
typedef struct {
- int lastblock;
- int freelist;
+ zint lastblock;
+ zint freelist;
} ISAMC_head;
+typedef unsigned ISAMC_BLOCK_SIZE;
+
typedef struct ISAMC_file_s {
ISAMC_head head;
BFile bf;
int no_released;
int no_remap;
+ int no_forward;
+ int no_backward;
+ zint sum_forward;
+ zint sum_backward;
+ int no_next;
+ int no_prev;
+
+ char *alloc_buf;
+ int alloc_entries_num;
+ int alloc_entries_max;
+
int fc_max;
- int *fc_list;
+ zint *fc_list;
} *ISAMC_file;
struct ISAMC_s {
int no_files;
int max_cat;
char *merge_buf;
- ISAMC_M method;
+ ISAMC_M *method;
ISAMC_file files;
};
struct ISAMC_PP_s {
char *buf;
- int offset;
- int size;
+ ISAMC_BLOCK_SIZE offset;
+ ISAMC_BLOCK_SIZE size;
int cat;
- int pos;
- int next;
+ zint pos;
+ zint next;
ISAMC is;
void *decodeClientData;
int deleteFlag;
+ zint numKeys;
};
-#define ISAMC_BLOCK_OFFSET (sizeof(int)+sizeof(int))
+/*
+ first block consists of
+ next pointer : zint
+ size : ISAMC_BLOCK_SIZE (int)
+ numkeys : zint
+ data
+ other blocks consists of
+ next pointer : zint
+ size : ISAMC_BLOCK_SIZE (int)
+ data
+*/
+#define ISAMC_BLOCK_OFFSET_1 (sizeof(zint)+sizeof(ISAMC_BLOCK_SIZE)+sizeof(zint))
+#define ISAMC_BLOCK_OFFSET_N (sizeof(zint)+sizeof(ISAMC_BLOCK_SIZE))
+
+zint isamc_alloc_block (ISAMC is, int cat);
+void isamc_release_block (ISAMC is, int cat, zint pos);
+int isamc_read_block (ISAMC is, int cat, zint pos, char *dst);
+int isamc_write_block (ISAMC is, int cat, zint pos, char *src);
+
+YAZ_END_CDECL
-int isc_alloc_block (ISAMC is, int cat);
-void isc_release_block (ISAMC is, int cat, int pos);
-int isc_write_dblock (ISAMC is, int cat, int pos, char *src,
- int nextpos, int offset);