X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=isamc%2Fisamc.c;h=bc81c16db76c147e05df80151f22b7e9fbf1bd1b;hb=e5e4f1de02396b2cfab488f8e5918853e96d6b53;hp=4f5c8bc6df383f928053071a5d1c075a34ef97de;hpb=ef696645cc3b7e0f4027008d1dc589c0f0f90c1f;p=idzebra-moved-to-github.git diff --git a/isamc/isamc.c b/isamc/isamc.c index 4f5c8bc..bc81c16 100644 --- a/isamc/isamc.c +++ b/isamc/isamc.c @@ -1,72 +1,26 @@ -/* - * Copyright (c) 1995-1998, Index Data. - * See the file LICENSE for details. - * Sebastian Hammer, Adam Dickmeiss - * - * $Log: isamc.c,v $ - * Revision 1.17 1999-05-26 07:49:14 adam - * C++ compilation. - * - * Revision 1.16 1998/05/27 14:32:03 adam - * Changed default block category layout. - * - * Revision 1.15 1998/05/20 10:12:25 adam - * Implemented automatic EXPLAIN database maintenance. - * Modified Zebra to work with ASN.1 compiled version of YAZ. - * - * Revision 1.14 1998/03/19 10:04:35 adam - * Minor changes. - * - * Revision 1.13 1998/03/18 09:23:55 adam - * Blocks are stored in chunks on free list - up to factor 2 in speed. - * Fixed bug that could occur in block category rearrangemen. - * - * Revision 1.12 1998/03/16 10:37:24 adam - * Added more statistics. - * - * Revision 1.11 1998/03/13 15:30:50 adam - * New functions isc_block_used and isc_block_size. Fixed 'leak' - * in isc_alloc_block. - * - * Revision 1.10 1998/03/11 11:18:18 adam - * Changed the isc_merge to take into account the mfill (minimum-fill). - * - * Revision 1.9 1998/03/06 13:54:02 adam - * Fixed two nasty bugs in isc_merge. - * - * Revision 1.8 1997/09/17 12:19:20 adam - * Zebra version corresponds to YAZ version 1.4. - * Changed Zebra server so that it doesn't depend on global common_resource. - * - * Revision 1.7 1997/02/12 20:42:43 adam - * Bug fix: during isc_merge operations, some pages weren't marked dirty - * even though they should be. At this point the merge operation marks - * a page dirty if the previous page changed at all. A better approach is - * to mark it dirty if the last key written changed in previous page. - * - * Revision 1.6 1996/11/08 11:15:29 adam - * Number of keys in chain are stored in first block and the function - * to retrieve this information, isc_pp_num is implemented. - * - * Revision 1.5 1996/11/04 14:08:57 adam - * Optimized free block usage. - * - * Revision 1.4 1996/11/01 13:36:46 adam - * New element, max_blocks_mem, that control how many blocks of max size - * to store in memory during isc_merge. - * Function isc_merge now ignores delete/update of identical keys and - * the proper blocks are then non-dirty and not written in flush_blocks. - * - * Revision 1.3 1996/11/01 08:59:14 adam - * First version of isc_merge that supports update/delete. - * - * Revision 1.2 1996/10/29 16:44:56 adam - * Work on isc_merge. - * - * Revision 1.1 1996/10/29 13:40:48 adam - * First work. - * - */ +/* $Id: isamc.c,v 1.22 2002-08-02 19:26:56 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. +*/ + + /* * TODO: @@ -77,7 +31,7 @@ #include #include -#include +#include #include "isamc-p.h" static void flush_block (ISAMC is, int cat); @@ -88,14 +42,15 @@ static void init_fc (ISAMC is, int cat); #define SMALL_TEST 0 -ISAMC_M isc_getmethod (void) +void isc_getmethod (ISAMC_M m) { + static struct ISAMC_filecat_s def_cat[] = { #if SMALL_TEST { 32, 28, 0, 3 }, { 64, 54, 30, 0 }, #else - { 24, 22, 18, 10 }, + { 32, 26, 20, 10 }, { 128, 120, 100, 10 }, { 512, 490, 350, 10 }, { 2048, 1900, 1700, 10 }, @@ -103,23 +58,20 @@ ISAMC_M isc_getmethod (void) { 32768, 32000, 31000, 0 }, #endif }; - ISAMC_M m = (ISAMC_M) xmalloc (sizeof(*m)); m->filecat = def_cat; m->code_start = NULL; m->code_item = NULL; m->code_stop = NULL; + m->code_reset = NULL; m->compare_item = NULL; m->debug = 1; m->max_blocks_mem = 10; - - return m; } - ISAMC isc_open (BFiles bfs, const char *name, int writeflag, ISAMC_M method) { ISAMC is;