X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=isamc%2Fmerge.c;h=c8167663d248e032cc2f57b77b725f367687dd65;hb=840cf9f959b42b3f4b107de8e125cbc8c9cbbcfa;hp=09006846ca21b9d1a8e600c6c0d3c167fbb8e573;hpb=896c0427df9d8eff5de6a1735dcd992e067df844;p=idzebra-moved-to-github.git diff --git a/isamc/merge.c b/isamc/merge.c index 0900684..c816766 100644 --- a/isamc/merge.c +++ b/isamc/merge.c @@ -1,5 +1,5 @@ -/* $Id: merge.c,v 1.21 2002-08-02 19:26:56 adam Exp $ - Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002 +/* $Id: merge.c,v 1.26 2004-08-06 12:55:02 adam Exp $ + Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004 Index Data Aps This file is part of the Zebra server. @@ -20,8 +20,6 @@ Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - - #include #include #include @@ -31,10 +29,11 @@ Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA struct isc_merge_block { int offset; /* offset in r_buf */ - int block; /* block number of file (0 if none) */ + zint block; /* block number of file (0 if none) */ int dirty; /* block is different from that on file */ }; +#if 0 static void opt_blocks (ISAMC is, struct isc_merge_block *mb, int ptr, int last) { @@ -62,10 +61,11 @@ static void opt_blocks (ISAMC is, struct isc_merge_block *mb, int ptr, if (!last) mb[i].dirty = 1; } +#endif static void flush_blocks (ISAMC is, struct isc_merge_block *mb, int ptr, - char *r_buf, int *firstpos, int cat, int last, - int *numkeys) + char *r_buf, zint *firstpos, int cat, int last, + zint *numkeys) { int i; @@ -103,7 +103,7 @@ static void flush_blocks (ISAMC is, struct isc_merge_block *mb, int ptr, if (!*firstpos) *firstpos = mb[i].block; if (is->method->debug > 2) - logf (LOG_LOG, "isc: skip ptr=%d size=%d %d %d", + logf (LOG_LOG, "isc: skip ptr=%d size=%d %d " ZINT_FORMAT, i, ssize, cat, mb[i].block); ++(is->files[cat].no_skip_writes); continue; @@ -116,28 +116,27 @@ static void flush_blocks (ISAMC is, struct isc_merge_block *mb, int ptr, src = r_buf + mb[i].offset - ISAMC_BLOCK_OFFSET_1; ssize += ISAMC_BLOCK_OFFSET_1; - memcpy (src+sizeof(int)+sizeof(ssize), numkeys, - sizeof(*numkeys)); + memcpy (src+sizeof(zint)+sizeof(ssize), numkeys, sizeof(*numkeys)); if (is->method->debug > 2) - logf (LOG_LOG, "isc: flush ptr=%d numk=%d size=%d nextpos=%d", - i, *numkeys, (int) ssize, mb[i+1].block); + logf (LOG_LOG, "isc: flush ptr=%d numk=" ZINT_FORMAT " size=%d nextpos=" + ZINT_FORMAT, i, *numkeys, (int) ssize, mb[i+1].block); } else { src = r_buf + mb[i].offset - ISAMC_BLOCK_OFFSET_N; ssize += ISAMC_BLOCK_OFFSET_N; if (is->method->debug > 2) - logf (LOG_LOG, "isc: flush ptr=%d size=%d nextpos=%d", + logf (LOG_LOG, "isc: flush ptr=%d size=%d nextpos=" ZINT_FORMAT, i, (int) ssize, mb[i+1].block); } - memcpy (src, &mb[i+1].block, sizeof(int)); - memcpy (src+sizeof(int), &ssize, sizeof(ssize)); + memcpy (src, &mb[i+1].block, sizeof(zint)); + memcpy (src+sizeof(zint), &ssize, sizeof(ssize)); isc_write_block (is, cat, mb[i].block, src); } } -static int get_border (ISAMC is, struct isc_merge_block *mb, int ptr, - int cat, int firstpos) +static int get_border (ISAMC is, struct isc_merge_block *mb, zint ptr, + int cat, zint firstpos) { /* Border set to initial fill or block size depending on whether we are creating a new one or updating and old one. @@ -152,7 +151,7 @@ static int get_border (ISAMC is, struct isc_merge_block *mb, int ptr, return mb[ptr].offset + fill - off; } -ISAMC_P isc_merge (ISAMC is, ISAMC_P ipos, ISAMC_I data) +ISAMC_P isc_merge (ISAMC is, ISAMC_P ipos, ISAMC_I *data) { char i_item[128], *i_item_ptr; @@ -166,17 +165,17 @@ ISAMC_P isc_merge (ISAMC is, ISAMC_P ipos, ISAMC_I data) struct isc_merge_block mb[200]; - int firstpos = 0; + zint firstpos = 0; int cat = 0; char r_item_buf[128]; /* temporary result output */ char *r_buf; /* block with resulting data */ int r_offset = 0; /* current offset in r_buf */ int ptr = 0; /* pointer */ void *r_clientData; /* encode client data */ - int border; - int numKeys = 0; + zint border; + zint numKeys = 0; - r_clientData = (*is->method->code_start)(ISAMC_ENCODE); + r_clientData = (*is->method->codec.start)(); r_buf = is->merge_buf + 128; pp = isc_pp_open (is, ipos); @@ -188,7 +187,7 @@ ISAMC_P isc_merge (ISAMC is, ISAMC_P ipos, ISAMC_I data) cat = pp->cat; if (debug > 1) - logf (LOG_LOG, "isc: isc_merge begin %d %d", cat, pp->pos); + logf (LOG_LOG, "isc: isc_merge begin %d " ZINT_FORMAT, cat, pp->pos); /* read first item from i */ i_item_ptr = i_item; @@ -335,10 +334,10 @@ ISAMC_P isc_merge (ISAMC is, ISAMC_P ipos, ISAMC_I data) if (r_item) /* insert resulting item? */ { char *r_out_ptr = r_buf + r_offset; + const char *src = r_item; int new_offset; - (*is->method->code_item)(ISAMC_ENCODE, r_clientData, - &r_out_ptr, &r_item); + (*is->method->codec.encode)(r_clientData, &r_out_ptr, &src); new_offset = r_out_ptr - r_buf; numKeys++; @@ -346,7 +345,8 @@ ISAMC_P isc_merge (ISAMC is, ISAMC_P ipos, ISAMC_I data) if (border < new_offset && border >= r_offset) { if (debug > 2) - logf (LOG_LOG, "isc: border %d %d", ptr, border); + logf (LOG_LOG, "isc: border %d " ZINT_FORMAT, + ptr, border); /* Max size of current block category reached ... make new virtual block entry */ mb[++ptr].block = 0; @@ -422,7 +422,8 @@ ISAMC_P isc_merge (ISAMC is, ISAMC_P ipos, ISAMC_I data) ptr = j; border = get_border (is, mb, ptr, cat, firstpos); if (debug > 3) - logf (LOG_LOG, "isc: border=%d r_offset=%d", border, r_offset); + logf (LOG_LOG, "isc: border=" ZINT_FORMAT " r_offset=%d", + border, r_offset); } } if (mb[ptr].offset < r_offset) @@ -454,7 +455,7 @@ ISAMC_P isc_merge (ISAMC is, ISAMC_P ipos, ISAMC_I data) if (numKeys != isc_pp_num (pp)) { if (debug > 2) - logf (LOG_LOG, "isc: patch num keys firstpos=%d num=%d", + logf (LOG_LOG, "isc: patch num keys firstpos=" ZINT_FORMAT " num=" ZINT_FORMAT, firstpos, numKeys); bf_write (is->files[cat].bf, firstpos, ISAMC_BLOCK_OFFSET_N, sizeof(numKeys), &numKeys); @@ -469,82 +470,12 @@ ISAMC_P isc_merge (ISAMC is, ISAMC_P ipos, ISAMC_I data) /* flush rest of block(s) in r_buf */ flush_blocks (is, mb, ptr, r_buf, &firstpos, cat, 1, &numKeys); - (*is->method->code_stop)(ISAMC_ENCODE, r_clientData); + (*is->method->codec.stop)(r_clientData); if (!firstpos) cat = 0; if (debug > 1) - logf (LOG_LOG, "isc: isc_merge return %d %d", cat, firstpos); + logf (LOG_LOG, "isc: isc_merge return %d " ZINT_FORMAT, cat, firstpos); isc_pp_close (pp); return cat + firstpos * 8; } -/* - * $Log: merge.c,v $ - * Revision 1.21 2002-08-02 19:26:56 adam - * Towards GPL - * - * Revision 1.20 1999/11/30 13:48:04 adam - * Improved installation. Updated for inclusion of YAZ header files. - * - * Revision 1.19 1999/07/14 12:12:07 heikki - * Large-block isam-h (may not work too well... Abandoning for isam-d) - * - * Revision 1.17 1999/07/13 14:22:17 heikki - * Better allocation strategy in isamh_merge - * - * Revision 1.16 1999/07/08 14:23:27 heikki - * Fixed a bug in isamh_pp_read and cleaned up a bit - * - * Revision 1.15 1999/07/07 09:36:04 heikki - * Fixed an assertion in isamh - * - * Revision 1.13 1999/07/06 09:37:05 heikki - * Working on isamh - not ready yet. - * - * Revision 1.12 1999/06/30 15:03:55 heikki - * first take on isamh, the append-only isam structure - * - * Revision 1.11 1999/05/26 07:49:14 adam - * C++ compilation. - * - * Revision 1.10 1998/03/19 12:22:09 adam - * Minor change. - * - * Revision 1.9 1998/03/19 10:04:38 adam - * Minor changes. - * - * Revision 1.8 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 1.7 1998/03/11 11:18:18 adam - * Changed the isc_merge to take into account the mfill (minimum-fill). - * - * Revision 1.6 1998/03/06 13:54:03 adam - * Fixed two nasty bugs in isc_merge. - * - * Revision 1.5 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 1.4 1996/11/08 11:15:31 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 14:08:59 adam - * Optimized free block usage. - * - * Revision 1.2 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 1.1 1996/11/01 08:59:15 adam - * First version of isc_merge that supports update/delete. - * - */ - -