-/* $Id: records.c,v 1.4 2008-03-05 09:18:51 adam Exp $
- Copyright (C) 1995-2008
- Index Data ApS
-
-This file is part of the Zebra server.
+/* This file is part of the Zebra server.
+ Copyright (C) 1994-2011 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
*/
/*
- * Format of first block
+ * Format of first block (assumes a 512 block size)
* next (8 bytes)
* ref_count (2 bytes)
* block (500 bytes)
* (length, data) - pairs
* length = 0 if same as previous
*/
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#if HAVE_BZLIB_H
#include <bzlib.h>
#endif
+#if HAVE_ZLIB_H
+#include <zlib.h>
+#endif
#define REC_BLOCK_TYPES 2
#define REC_HEAD_MAGIC "recindex"
memcpy(block_and_ref + sizeof(freeblock), &ref, sizeof(ref));
if (ref)
{
+ /* there is still a reference to this block.. */
if (bf_write(p->data_BFile[dst_type], freeblock, 0,
sizeof(block_and_ref), block_and_ref))
{
}
return ZEBRA_OK;
}
- first = 0;
+ /* the list of blocks can all be removed (ref == 0) */
+ first = 0;
}
if (bf_write(p->data_BFile[dst_type], freeblock, 0, sizeof(freeblock),
return ZEBRA_OK;
}
+int rec_check_compression_method(int compression_method)
+{
+ switch(compression_method)
+ {
+ case REC_COMPRESS_ZLIB:
+#if HAVE_ZLIB_H
+ return 1;
+#else
+ return 0;
+#endif
+ case REC_COMPRESS_BZIP2:
+#if HAVE_BZLIB_H
+ return 1;
+#else
+ return 0;
+#endif
+ case REC_COMPRESS_NONE:
+ return 1;
+ }
+ return 0;
+}
+
Records rec_open(BFiles bfs, int rw, int compression_method)
{
Records p;
memset(&p->head, '\0', sizeof(p->head));
p->compression_method = compression_method;
p->rw = rw;
- p->tmp_size = 1024;
+ p->tmp_size = 4096;
p->tmp_buf = (char *) xmalloc(p->tmp_size);
p->compression_chunk_size = 0;
+ if (compression_method == REC_COMPRESS_BZIP2)
+ p->compression_chunk_size = 90000;
p->recindex = recindex_open(bfs, rw, 0 /* 1=isamb for recindex */);
r = recindex_read_head(p->recindex, p->tmp_buf);
switch (r)
p->head.block_last[i] = 1;
p->head.block_used[i] = 0;
}
- p->head.block_size[0] = 128;
+ p->head.block_size[0] = 256;
p->head.block_move[0] = 0;
for (i = 1; i<REC_BLOCK_TYPES; i++)
{
- p->head.block_size[i] = p->head.block_size[i-1] * 4;
- p->head.block_move[i] = p->head.block_size[i] * 24;
+ p->head.block_size[i] = p->head.block_size[i-1] * 8;
+ p->head.block_move[i] = p->head.block_size[i] * 2;
}
if (rw)
{
recindex_get_fname(p->recindex), version, REC_VERSION);
ret = ZEBRA_FAIL;
}
- p->compression_chunk_size = 90000; /* good for BZIP2 */
break;
}
for (i = 0; i<REC_BLOCK_TYPES; i++)
}
}
-static ZEBRA_RES rec_write_multiple(Records p, int saveCount)
+static ZEBRA_RES rec_flush_shared(Records p, short ref_count, zint *sysnos,
+ char *out_buf, int out_offset)
{
- int i;
- short ref_count = 0;
- char compression_method;
- Record last_rec = 0;
- int out_size = 1000;
- int out_offset = 0;
- char *out_buf = (char *) xmalloc(out_size);
- zint *sysnos = (zint *) xmalloc(sizeof(*sysnos) * (p->cache_cur + 1));
- zint *sysnop = sysnos;
ZEBRA_RES ret = ZEBRA_OK;
-
- for (i = 0; i<p->cache_cur - saveCount; i++)
- {
- struct record_cache_entry *e = p->record_cache + i;
- switch (e->flag)
- {
- case recordFlagNew:
- rec_cache_flush_block1(p, e->rec, last_rec, &out_buf,
- &out_size, &out_offset);
- *sysnop++ = rec_sysno_to_int(e->rec->sysno);
- ref_count++;
- e->flag = recordFlagNop;
- last_rec = e->rec;
- break;
- case recordFlagWrite:
- if (rec_release_blocks(p, rec_sysno_to_int(e->rec->sysno))
- != ZEBRA_OK)
- ret = ZEBRA_FAIL;
-
- rec_cache_flush_block1(p, e->rec, last_rec, &out_buf,
- &out_size, &out_offset);
- *sysnop++ = rec_sysno_to_int(e->rec->sysno);
- ref_count++;
- e->flag = recordFlagNop;
- last_rec = e->rec;
- break;
- case recordFlagDelete:
- if (rec_delete_single(p, e->rec) != ZEBRA_OK)
- ret = ZEBRA_FAIL;
-
- e->flag = recordFlagNop;
- break;
- default:
- break;
- }
- }
-
- *sysnop = -1;
if (ref_count)
{
+ int i;
unsigned int csize = 0; /* indicate compression "not performed yet" */
- compression_method = p->compression_method;
+ char compression_method = p->compression_method;
switch (compression_method)
{
+ case REC_COMPRESS_ZLIB:
+#if HAVE_ZLIB_H
+ csize = out_offset + (out_offset >> 6) + 620;
+ while (1)
+ {
+ int r;
+ uLongf destLen = csize;
+ rec_tmp_expand(p, csize);
+ r = compress((Bytef *) p->tmp_buf+sizeof(zint)+sizeof(short)+
+ sizeof(char),
+ &destLen, (const Bytef *) out_buf, out_offset);
+ csize = destLen;
+ if (r == Z_OK)
+ {
+ break;
+ }
+ if (r != Z_MEM_ERROR)
+ {
+ yaz_log(YLOG_WARN, "compress error: %d", r);
+ csize = 0;
+ break;
+ }
+ csize = csize * 2;
+ }
+#endif
+ break;
case REC_COMPRESS_BZIP2:
#if HAVE_BZLIB_H
csize = out_offset + (out_offset >> 6) + 620;
yaz_log(YLOG_WARN, "bzBuffToBuffCompress error code=%d", i);
csize = 0;
}
- yaz_log(YLOG_LOG, "compress %4d %5d %5d", ref_count, out_offset,
- csize);
#endif
break;
case REC_COMPRESS_NONE:
!= ZEBRA_OK)
ret = ZEBRA_FAIL;
}
+ return ret;
+}
+
+static ZEBRA_RES rec_write_multiple(Records p, int saveCount)
+{
+ int i;
+ short ref_count = 0;
+ Record last_rec = 0;
+ int out_size = 1000;
+ int out_offset = 0;
+ char *out_buf = (char *) xmalloc(out_size);
+ zint *sysnos = (zint *) xmalloc(sizeof(*sysnos) * (p->cache_cur + 1));
+ zint *sysnop = sysnos;
+ ZEBRA_RES ret = ZEBRA_OK;
+
+ for (i = 0; i<p->cache_cur - saveCount; i++)
+ {
+ struct record_cache_entry *e = p->record_cache + i;
+ switch (e->flag)
+ {
+ case recordFlagNew:
+ rec_cache_flush_block1(p, e->rec, last_rec, &out_buf,
+ &out_size, &out_offset);
+ *sysnop++ = rec_sysno_to_int(e->rec->sysno);
+ ref_count++;
+ e->flag = recordFlagNop;
+ last_rec = e->rec;
+ break;
+ case recordFlagWrite:
+ if (rec_release_blocks(p, rec_sysno_to_int(e->rec->sysno))
+ != ZEBRA_OK)
+ ret = ZEBRA_FAIL;
+
+ rec_cache_flush_block1(p, e->rec, last_rec, &out_buf,
+ &out_size, &out_offset);
+ *sysnop++ = rec_sysno_to_int(e->rec->sysno);
+ ref_count++;
+ e->flag = recordFlagNop;
+ last_rec = e->rec;
+ break;
+ case recordFlagDelete:
+ if (rec_delete_single(p, e->rec) != ZEBRA_OK)
+ ret = ZEBRA_FAIL;
+
+ e->flag = recordFlagNop;
+ break;
+ case recordFlagNop:
+ break;
+ default:
+ break;
+ }
+ }
+
+ *sysnop = -1;
+ rec_flush_shared(p, ref_count, sysnos, out_buf, out_offset);
xfree(out_buf);
xfree(sysnos);
return ret;
char *nptr, *cptr;
char *in_buf = 0;
char *bz_buf = 0;
-#if HAVE_BZLIB_H
- unsigned int bz_size;
-#endif
char compression_method;
assert(sysno > 0);
in_size = entry.size - sizeof(short) - sizeof(char);
switch (compression_method)
{
+ case REC_COMPRESS_ZLIB:
+#if HAVE_ZLIB_H
+ if (1)
+ {
+ unsigned int bz_size = entry.size * 20 + 100;
+ while (1)
+ {
+ uLongf destLen = bz_size;
+ bz_buf = (char *) xmalloc(bz_size);
+ i = uncompress((Bytef *) bz_buf, &destLen,
+ (const Bytef *) in_buf, in_size);
+ if (i == Z_OK)
+ {
+ bz_size = destLen;
+ break;
+ }
+ yaz_log(YLOG_LOG, "failed");
+ xfree(bz_buf);
+ bz_size *= 2;
+ }
+ in_buf = bz_buf;
+ in_size = bz_size;
+ }
+#else
+ yaz_log(YLOG_FATAL, "cannot decompress record(s) in ZLIB format");
+ return 0;
+#endif
+ break;
case REC_COMPRESS_BZIP2:
#if HAVE_BZLIB_H
- bz_size = entry.size * 20 + 100;
- while (1)
- {
- bz_buf = (char *) xmalloc(bz_size);
+ if (1)
+ {
+ unsigned int bz_size = entry.size * 20 + 100;
+ while (1)
+ {
+ bz_buf = (char *) xmalloc(bz_size);
#ifdef BZ_CONFIG_ERROR
- i = BZ2_bzBuffToBuffDecompress
+ i = BZ2_bzBuffToBuffDecompress
#else
- i = bzBuffToBuffDecompress
+ i = bzBuffToBuffDecompress
#endif
- (bz_buf, &bz_size, in_buf, in_size, 0, 0);
- yaz_log(YLOG_LOG, "decompress %5d %5d", in_size, bz_size);
- if (i == BZ_OK)
- break;
- yaz_log(YLOG_LOG, "failed");
- xfree(bz_buf);
- bz_size *= 2;
- }
- in_buf = bz_buf;
- in_size = bz_size;
+ (bz_buf, &bz_size, in_buf, in_size, 0, 0);
+ if (i == BZ_OK)
+ break;
+ yaz_log(YLOG_LOG, "failed");
+ xfree(bz_buf);
+ bz_size *= 2;
+ }
+ in_buf = bz_buf;
+ in_size = bz_size;
+ }
#else
yaz_log(YLOG_FATAL, "cannot decompress record(s) in BZIP2 format");
return 0;
return rec_get(p, rec_sysno_to_ext(1));
}
+Record rec_get_next(Records p, Record rec)
+{
+ Record next = 0;
+ zint next_sysno_int = rec_sysno_to_int(rec->sysno);
+
+ while (!next)
+ {
+ ++next_sysno_int;
+ if (next_sysno_int == p->head.index_last)
+ break;
+ next = rec_get(p, rec_sysno_to_ext(next_sysno_int));
+ }
+ return next;
+}
+
static Record rec_new_int(Records p)
{
int i;
return p;
}
-void rec_prstat(Records records)
+void rec_prstat(Records records, int verbose)
{
int i;
zint total_bytes = 0;
records->head.block_used[i] * records->head.block_size[i]);
total_bytes +=
records->head.block_used[i] * records->head.block_size[i];
+
+ yaz_log(YLOG_LOG, " Block Last " ZINT_FORMAT, records->head.block_last[i]);
+ if (verbose)
+ { /* analyse free lists */
+ zint no_free = 0;
+ zint block_free = records->head.block_free[i];
+ WRBUF w = wrbuf_alloc();
+ while (block_free)
+ {
+ zint nblock;
+ no_free++;
+ wrbuf_printf(w, " " ZINT_FORMAT, block_free);
+ if (bf_read(records->data_BFile[i],
+ block_free, 0, sizeof(nblock), &nblock) != 1)
+ {
+ yaz_log(YLOG_FATAL|YLOG_ERRNO, "read in %s at free block "
+ ZINT_FORMAT,
+ records->data_fname[i], block_free);
+ break;
+ }
+ block_free = nblock;
+ }
+ yaz_log (YLOG_LOG,
+ " Number in free list %8" ZINT_FORMAT0, no_free);
+ if (no_free)
+ yaz_log(YLOG_LOG, "%s", wrbuf_cstr(w));
+ wrbuf_destroy(w);
+ }
}
yaz_log (YLOG_LOG,
"Total size of record index in bytes %8" ZINT_FORMAT0,
/*
* Local variables:
* c-basic-offset: 4
+ * c-file-style: "Stroustrup"
* indent-tabs-mode: nil
* End:
* vim: shiftwidth=4 tabstop=8 expandtab
projects / idzebra-moved-to-github.git / blobdiff