X-Git-Url: http://git.indexdata.com/?p=idzebra-moved-to-github.git;a=blobdiff_plain;f=isamc%2Fisamc-p.h;h=67a80ba281ff5d3dc87e2b48604e39798ab593ba;hp=d9275b65e1f4edd90c95e5a4271a0c104bbf5c6c;hb=HEAD;hpb=f35acdb246c32bc8330fd77104f952711ad1bff5 diff --git a/isamc/isamc-p.h b/isamc/isamc-p.h index d9275b6..67a80ba 100644 --- a/isamc/isamc-p.h +++ b/isamc/isamc-p.h @@ -1,37 +1,32 @@ -/* - * Copyright (c) 1995-1996, Index Data. - * See the file LICENSE for details. - * Sebastian Hammer, Adam Dickmeiss - * - * $Log: isamc-p.h,v $ - * Revision 1.6 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 1.5 1998/03/16 10:37:24 adam - * Added more statistics. - * - * Revision 1.4 1996/11/08 11:15:28 adam - * Number of keys in chain are stored in first block and the function - * to retrieve this information, isc_pp_num is implemented. - * - * Revision 1.3 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. - * - */ +/* This file is part of the Zebra server. + Copyright (C) Index Data + +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 -#include -#include +*/ + + + +#include +#include + +YAZ_BEGIN_CDECL typedef struct { - int lastblock; - int freelist; + zint lastblock; + zint freelist; } ISAMC_head; typedef unsigned ISAMC_BLOCK_SIZE; @@ -40,7 +35,7 @@ typedef struct ISAMC_file_s { ISAMC_head head; BFile bf; int head_is_dirty; - + int no_writes; int no_reads; int no_skip_writes; @@ -50,8 +45,8 @@ typedef struct ISAMC_file_s { int no_forward; int no_backward; - int sum_forward; - int sum_backward; + zint sum_forward; + zint sum_backward; int no_next; int no_prev; @@ -60,33 +55,58 @@ typedef struct ISAMC_file_s { 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; ISAMC_BLOCK_SIZE offset; ISAMC_BLOCK_SIZE size; int cat; - int pos; - int next; + zint pos; + zint next; ISAMC is; void *decodeClientData; int deleteFlag; - int numKeys; + zint numKeys; }; -#define ISAMC_BLOCK_OFFSET_N (sizeof(int)+sizeof(ISAMC_BLOCK_SIZE)) -#define ISAMC_BLOCK_OFFSET_1 (sizeof(int)+sizeof(ISAMC_BLOCK_SIZE)+sizeof(int)) -int isc_alloc_block (ISAMC is, int cat); -void isc_release_block (ISAMC is, int cat, int pos); -int isc_read_block (ISAMC is, int cat, int pos, char *dst); -int isc_write_block (ISAMC is, int cat, int pos, char *src); +/* + 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 + + +/* + * Local variables: + * c-basic-offset: 4 + * c-file-style: "Stroustrup" + * indent-tabs-mode: nil + * End: + * vim: shiftwidth=4 tabstop=8 expandtab + */ +