X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=index%2Frecindex.c;h=c3392ddf4b00ef98d2bcdb62b7b26cf780e116d2;hb=f00cbbbdc1df5478ce74c4a13efafc42257e4cc1;hp=f64816cda7585c55cdecbfb658d122cff0bca760;hpb=5214040d316f7b5228e46e1749505e3c0c8869d4;p=idzebra-moved-to-github.git diff --git a/index/recindex.c b/index/recindex.c index f64816c..c3392dd 100644 --- a/index/recindex.c +++ b/index/recindex.c @@ -1,114 +1,903 @@ +/* $Id: recindex.c,v 1.44 2005-05-11 12:36:45 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. +*/ + +#define RIDX_CHUNK 128 + /* - * Copyright (C) 1994-1995, Index Data I/S - * All rights reserved. - * Sebastian Hammer, Adam Dickmeiss + * Format of first block + * next (8 bytes) + * ref_count (2 bytes) + * block (500 bytes) * - * $Log: recindex.c,v $ - * Revision 1.1 1995-11-15 14:46:20 adam - * Started work on better record management system. + * Format of subsequent blocks + * next (8 bytes) + * block (502 bytes) * + * Format of each record + * sysno + * (length, data) - pairs + * length = 0 if same as previous */ #include +#include #include #include -#include -#include -#include -#include -#include "recindex.h" +#include +#include "recindxp.h" -#define REC_HEAD_MAGIC "rechead" - -static void rec_write_head (Records p) +#if HAVE_BZLIB_H +#include +#endif +static void rec_write_head(Records p) { int r; - assert (p); - assert (p->fd != -1); - if (lseek (p->fd, (off_t) 0, SEEK_SET) == -1) + assert(p); + assert(p->index_BFile); + + r = bf_write(p->index_BFile, 0, 0, sizeof(p->head), &p->head); + if (r) { - logf (LOG_FATAL|LOG_ERRNO, "lseek to 0 in %s", p->fname); - exit (1); + yaz_log(YLOG_FATAL|YLOG_ERRNO, "write head of %s", p->index_fname); + exit(1); } - r = write (p->fd, &p->head, sizeof(p->head)); - switch (r) +} + +static void rec_tmp_expand(Records p, int size) +{ + if (p->tmp_size < size + 2048 || + p->tmp_size < p->head.block_size[REC_BLOCK_TYPES-1]*2) { - case -1: - logf (LOG_FATAL|LOG_ERRNO, "write head of %s", p->fname); - exit (1); - case sizeof(p->head): - break; - default: - logf (LOG_FATAL, "write head of %s. wrote %d", p->fname, r); - exit (1); + xfree(p->tmp_buf); + p->tmp_size = size + (int) + (p->head.block_size[REC_BLOCK_TYPES-1])*2 + 2048; + p->tmp_buf = (char *) xmalloc(p->tmp_size); } } -Records rec_open (int rw) +static int read_indx(Records p, SYSNO sysno, void *buf, int itemsize, + int ignoreError) { - Records p; int r; + zint pos = (sysno-1)*itemsize; + int off = (int) (pos%RIDX_CHUNK); + int sz1 = RIDX_CHUNK - off; /* sz1 is size of buffer to read.. */ - if (!(p = malloc (sizeof(*p)))) + if (sz1 > itemsize) + sz1 = itemsize; /* no more than itemsize bytes */ + + r = bf_read(p->index_BFile, 1+pos/RIDX_CHUNK, off, sz1, buf); + if (r == 1 && sz1 < itemsize) /* boundary? - must read second part */ + r = bf_read(p->index_BFile, 2+pos/RIDX_CHUNK, 0, itemsize - sz1, + (char*) buf + sz1); + if (r != 1 && !ignoreError) { - logf (LOG_FATAL|LOG_ERRNO, "malloc"); - exit (1); + yaz_log(YLOG_FATAL|YLOG_ERRNO, "read in %s at pos %ld", + p->index_fname, (long) pos); + exit(1); + } + return r; +} + +static void write_indx(Records p, SYSNO sysno, void *buf, int itemsize) +{ + zint pos = (sysno-1)*itemsize; + int off = (int) (pos%RIDX_CHUNK); + int sz1 = RIDX_CHUNK - off; /* sz1 is size of buffer to read.. */ + + if (sz1 > itemsize) + sz1 = itemsize; /* no more than itemsize bytes */ + + bf_write(p->index_BFile, 1+pos/RIDX_CHUNK, off, sz1, buf); + if (sz1 < itemsize) /* boundary? must write second part */ + bf_write(p->index_BFile, 2+pos/RIDX_CHUNK, 0, itemsize - sz1, + (char*) buf + sz1); +} + +static void rec_release_blocks(Records p, SYSNO sysno) +{ + struct record_index_entry entry; + zint freeblock; + char block_and_ref[sizeof(zint) + sizeof(short)]; + int dst_type; + int first = 1; + + if (read_indx(p, sysno, &entry, sizeof(entry), 1) != 1) + return ; + + freeblock = entry.next; + assert(freeblock > 0); + dst_type = (int) (freeblock & 7); + assert(dst_type < REC_BLOCK_TYPES); + freeblock = freeblock / 8; + while (freeblock) + { + if (bf_read(p->data_BFile[dst_type], freeblock, 0, + first ? sizeof(block_and_ref) : sizeof(zint), + block_and_ref) != 1) + { + yaz_log(YLOG_FATAL|YLOG_ERRNO, "read in rec_del_single"); + exit (1); + } + if (first) + { + short ref; + memcpy(&ref, block_and_ref + sizeof(freeblock), sizeof(ref)); + --ref; + memcpy(block_and_ref + sizeof(freeblock), &ref, sizeof(ref)); + if (ref) + { + if (bf_write(p->data_BFile[dst_type], freeblock, 0, + sizeof(block_and_ref), block_and_ref)) + { + yaz_log(YLOG_FATAL|YLOG_ERRNO, "write in rec_del_single"); + exit (1); + } + return; + } + first = 0; + } + + if (bf_write(p->data_BFile[dst_type], freeblock, 0, sizeof(freeblock), + &p->head.block_free[dst_type])) + { + yaz_log(YLOG_FATAL|YLOG_ERRNO, "write in rec_del_single"); + exit(1); + } + p->head.block_free[dst_type] = freeblock; + memcpy(&freeblock, block_and_ref, sizeof(freeblock)); + + p->head.block_used[dst_type]--; } - p->fname = "recindex"; - p->fd = open (p->fname, rw ? (O_RDWR|O_CREAT) : O_RDONLY, 0666); - if (p->fd == -1) + p->head.total_bytes -= entry.size; +} + +static void rec_delete_single(Records p, Record rec) +{ + struct record_index_entry entry; + + rec_release_blocks(p, rec->sysno); + + entry.next = p->head.index_free; + entry.size = 0; + p->head.index_free = rec->sysno; + write_indx(p, rec->sysno, &entry, sizeof(entry)); +} + +static void rec_write_tmp_buf(Records p, int size, SYSNO *sysnos) +{ + struct record_index_entry entry; + int no_written = 0; + char *cptr = p->tmp_buf; + zint block_prev = -1, block_free; + int dst_type = 0; + int i; + + for (i = 1; i= p->head.block_move[i]) + dst_type = i; + while (no_written < size) { - logf (LOG_FATAL|LOG_ERRNO, "open %s", p->fname); + block_free = p->head.block_free[dst_type]; + if (block_free) + { + if (bf_read(p->data_BFile[dst_type], + block_free, 0, sizeof(*p->head.block_free), + &p->head.block_free[dst_type]) != 1) + { + yaz_log(YLOG_FATAL|YLOG_ERRNO, "read in %s at free block " + ZINT_FORMAT, + p->data_fname[dst_type], block_free); + exit (1); + } + } + else + block_free = p->head.block_last[dst_type]++; + if (block_prev == -1) + { + entry.next = block_free*8 + dst_type; + entry.size = size; + p->head.total_bytes += size; + while (*sysnos > 0) + { + write_indx (p, *sysnos, &entry, sizeof(entry)); + sysnos++; + } + } + else + { + memcpy(cptr, &block_free, sizeof(block_free)); + bf_write(p->data_BFile[dst_type], block_prev, 0, 0, cptr); + cptr = p->tmp_buf + no_written; + } + block_prev = block_free; + no_written += (int)(p->head.block_size[dst_type]) - sizeof(zint); + p->head.block_used[dst_type]++; + } + assert(block_prev != -1); + block_free = 0; + memcpy(cptr, &block_free, sizeof(block_free)); + bf_write(p->data_BFile[dst_type], block_prev, 0, + sizeof(block_free) + (p->tmp_buf+size) - cptr, cptr); +} + +Records rec_open(BFiles bfs, int rw, int compression_method) +{ + Records p; + int i, r; + int version; + + p = (Records) xmalloc (sizeof(*p)); + p->compression_method = compression_method; + p->rw = rw; + p->tmp_size = 1024; + p->tmp_buf = (char *) xmalloc (p->tmp_size); + p->index_fname = "reci"; + p->index_BFile = bf_open (bfs, p->index_fname, RIDX_CHUNK, rw); + if (p->index_BFile == NULL) + { + yaz_log(YLOG_FATAL|YLOG_ERRNO, "open %s", p->index_fname); exit (1); } - r = read (p->fd, &p->head, sizeof(p->head)); + r = bf_read(p->index_BFile, 0, 0, 0, p->tmp_buf); switch (r) { - case -1: - logf (LOG_FATAL|LOG_ERRNO, "read %s", p->fname); - exit (1); case 0: + memcpy(p->head.magic, REC_HEAD_MAGIC, sizeof(p->head.magic)); + sprintf (p->head.version, "%3d", REC_VERSION); + p->head.index_free = 0; + p->head.index_last = 1; p->head.no_records = 0; - p->head.freelist = 0; + p->head.total_bytes = 0; + for (i = 0; ihead.block_free[i] = 0; + p->head.block_last[i] = 1; + p->head.block_used[i] = 0; + } + p->head.block_size[0] = 128; + p->head.block_move[0] = 0; + for (i = 1; ihead.block_size[i] = p->head.block_size[i-1] * 4; + p->head.block_move[i] = p->head.block_size[i] * 24; + } if (rw) - rec_write_head (p); + rec_write_head(p); break; - case sizeof(p->head): + case 1: + memcpy(&p->head, p->tmp_buf, sizeof(p->head)); if (memcmp (p->head.magic, REC_HEAD_MAGIC, sizeof(p->head.magic))) { - logf (LOG_FATAL, "read %s. bad header", p->fname); + yaz_log(YLOG_FATAL, "file %s has bad format", p->index_fname); exit (1); } + version = atoi (p->head.version); + if (version != REC_VERSION) + { + yaz_log(YLOG_FATAL, "file %s is version %d, but version" + " %d is required", p->index_fname, version, REC_VERSION); + exit (1); + } break; - default: - logf (LOG_FATAL, "read head of %s. expected %d. got %d", - p->fname, sizeof(p->head), r); - exit (1); } + for (i = 0; idata_fname[i] = (char *) xmalloc (strlen(str)+1); + strcpy(p->data_fname[i], str); + p->data_BFile[i] = NULL; + } + for (i = 0; idata_BFile[i] = bf_open (bfs, p->data_fname[i], + (int) (p->head.block_size[i]), + rw))) + { + yaz_log(YLOG_FATAL|YLOG_ERRNO, "bf_open %s", p->data_fname[i]); + exit (1); + } + } + p->cache_max = 400; + p->cache_cur = 0; + p->record_cache = (struct record_cache_entry *) + xmalloc (sizeof(*p->record_cache)*p->cache_max); + zebra_mutex_init (&p->mutex); return p; } -void rec_close (Records p) +static void rec_encode_unsigned(unsigned n, unsigned char *buf, int *len) { - if (p->fd != -1) - close (p->fd); - free (p); + (*len) = 0; + while (n > 127) + { + buf[*len] = 128 + (n & 127); + n = n >> 7; + (*len)++; + } + buf[*len] = n; + (*len)++; } -Record rec_get (Records p, int sysno) +static void rec_decode_unsigned(unsigned *np, unsigned char *buf, int *len) { - assert (p); - return NULL; + unsigned n = 0; + unsigned w = 1; + (*len) = 0; + + while (buf[*len] > 127) + { + n += w*(buf[*len] & 127); + w = w << 7; + (*len)++; + } + n += w * buf[*len]; + (*len)++; + *np = n; +} + +static void rec_encode_zint(zint n, unsigned char *buf, int *len) +{ + (*len) = 0; + while (n > 127) + { + buf[*len] = (unsigned) (128 + (n & 127)); + n = n >> 7; + (*len)++; + } + buf[*len] = (unsigned) n; + (*len)++; +} + +static void rec_decode_zint(zint *np, unsigned char *buf, int *len) +{ + zint n = 0; + zint w = 1; + (*len) = 0; + + while (buf[*len] > 127) + { + n += w*(buf[*len] & 127); + w = w << 7; + (*len)++; + } + n += w * buf[*len]; + (*len)++; + *np = n; +} + +static void rec_cache_flush_block1(Records p, Record rec, Record last_rec, + char **out_buf, int *out_size, + int *out_offset) +{ + int i; + int len; + + for (i = 0; isize[i] + 20 > *out_size) + { + int new_size = *out_offset + rec->size[i] + 65536; + char *np = (char *) xmalloc (new_size); + if (*out_offset) + memcpy(np, *out_buf, *out_offset); + xfree (*out_buf); + *out_size = new_size; + *out_buf = np; + } + if (i == 0) + { + rec_encode_zint (rec->sysno, *out_buf + *out_offset, &len); + (*out_offset) += len; + } + if (rec->size[i] == 0) + { + rec_encode_unsigned (1, *out_buf + *out_offset, &len); + (*out_offset) += len; + } + else if (last_rec && rec->size[i] == last_rec->size[i] && + !memcmp (rec->info[i], last_rec->info[i], rec->size[i])) + { + rec_encode_unsigned (0, *out_buf + *out_offset, &len); + (*out_offset) += len; + } + else + { + rec_encode_unsigned (rec->size[i]+1, *out_buf + *out_offset, &len); + (*out_offset) += len; + memcpy(*out_buf + *out_offset, rec->info[i], rec->size[i]); + (*out_offset) += rec->size[i]; + } + } +} + +static void rec_write_multiple(Records p, int saveCount) +{ + 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); + SYSNO *sysnos = (SYSNO *) xmalloc (sizeof(*sysnos) * (p->cache_cur + 1)); + SYSNO *sysnop = sysnos; + + for (i = 0; icache_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++ = e->rec->sysno; + ref_count++; + e->flag = recordFlagNop; + last_rec = e->rec; + break; + case recordFlagWrite: + rec_release_blocks (p, e->rec->sysno); + rec_cache_flush_block1 (p, e->rec, last_rec, &out_buf, + &out_size, &out_offset); + *sysnop++ = e->rec->sysno; + ref_count++; + e->flag = recordFlagNop; + last_rec = e->rec; + break; + case recordFlagDelete: + rec_delete_single (p, e->rec); + e->flag = recordFlagNop; + break; + default: + break; + } + } + + *sysnop = -1; + if (ref_count) + { + int csize = 0; /* indicate compression "not performed yet" */ + compression_method = p->compression_method; + switch (compression_method) + { + case REC_COMPRESS_BZIP2: +#if HAVE_BZLIB_H + csize = out_offset + (out_offset >> 6) + 620; + rec_tmp_expand (p, csize); +#ifdef BZ_CONFIG_ERROR + i = BZ2_bzBuffToBuffCompress +#else + i = bzBuffToBuffCompress +#endif + (p->tmp_buf+sizeof(zint)+sizeof(short)+ + sizeof(char), + &csize, out_buf, out_offset, 1, 0, 30); + if (i != BZ_OK) + { + 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: + break; + } + if (!csize) + { + /* either no compression or compression not supported ... */ + csize = out_offset; + rec_tmp_expand (p, csize); + memcpy(p->tmp_buf + sizeof(zint) + sizeof(short) + sizeof(char), + out_buf, out_offset); + csize = out_offset; + compression_method = REC_COMPRESS_NONE; + } + memcpy(p->tmp_buf + sizeof(zint), &ref_count, sizeof(ref_count)); + memcpy(p->tmp_buf + sizeof(zint)+sizeof(short), + &compression_method, sizeof(compression_method)); + + /* -------- compression */ + rec_write_tmp_buf (p, csize + sizeof(short) + sizeof(char), sysnos); + } + xfree (out_buf); + xfree (sysnos); } -Record rec_new (Records p) +static void rec_cache_flush(Records p, int saveCount) { - assert (p); + int i, j; + + if (saveCount >= p->cache_cur) + saveCount = 0; + + rec_write_multiple (p, saveCount); + + for (i = 0; icache_cur - saveCount; i++) + { + struct record_cache_entry *e = p->record_cache + i; + rec_rm(&e->rec); + } + /* i still being used ... */ + for (j = 0; jrecord_cache+j, p->record_cache+i, + sizeof(*p->record_cache)); + p->cache_cur = saveCount; +} + +static Record *rec_cache_lookup(Records p, SYSNO sysno, + enum recordCacheFlag flag) +{ + int i; + for (i = 0; icache_cur; i++) + { + struct record_cache_entry *e = p->record_cache + i; + if (e->rec->sysno == sysno) + { + if (flag != recordFlagNop && e->flag == recordFlagNop) + e->flag = flag; + return &e->rec; + } + } return NULL; } -void rec_put (Records p, Record rec) +static void rec_cache_insert(Records p, Record rec, enum recordCacheFlag flag) +{ + struct record_cache_entry *e; + + if (p->cache_cur == p->cache_max) + rec_cache_flush (p, 1); + else if (p->cache_cur > 0) + { + int i, j; + int used = 0; + for (i = 0; icache_cur; i++) + { + Record r = (p->record_cache + i)->rec; + for (j = 0; jsize[j]; + } + if (used > 90000) + rec_cache_flush (p, 1); + } + assert(p->cache_cur < p->cache_max); + + e = p->record_cache + (p->cache_cur)++; + e->flag = flag; + e->rec = rec_cp (rec); +} + +void rec_close(Records *pp) +{ + Records p = *pp; + int i; + + assert(p); + + zebra_mutex_destroy(&p->mutex); + rec_cache_flush (p, 0); + xfree (p->record_cache); + + if (p->rw) + rec_write_head(p); + + if (p->index_BFile) + bf_close (p->index_BFile); + + for (i = 0; idata_BFile[i]) + bf_close (p->data_BFile[i]); + xfree (p->data_fname[i]); + } + xfree (p->tmp_buf); + xfree (p); + *pp = NULL; +} + +static Record rec_get_int(Records p, SYSNO sysno) +{ + int i, in_size, r; + Record rec, *recp; + struct record_index_entry entry; + zint freeblock; + int dst_type; + char *nptr, *cptr; + char *in_buf = 0; + char *bz_buf = 0; +#if HAVE_BZLIB_H + int bz_size; +#endif + char compression_method; + + assert(sysno > 0); + assert(p); + + if ((recp = rec_cache_lookup (p, sysno, recordFlagNop))) + return rec_cp (*recp); + + if (read_indx (p, sysno, &entry, sizeof(entry), 1) < 1) + return NULL; /* record is not there! */ + + if (!entry.size) + return NULL; /* record is deleted */ + + dst_type = (int) (entry.next & 7); + assert(dst_type < REC_BLOCK_TYPES); + freeblock = entry.next / 8; + + assert(freeblock > 0); + + rec_tmp_expand (p, entry.size); + + cptr = p->tmp_buf; + r = bf_read(p->data_BFile[dst_type], freeblock, 0, 0, cptr); + if (r < 0) + return 0; + memcpy(&freeblock, cptr, sizeof(freeblock)); + + while (freeblock) + { + zint tmp; + + cptr += p->head.block_size[dst_type] - sizeof(freeblock); + + memcpy(&tmp, cptr, sizeof(tmp)); + r = bf_read(p->data_BFile[dst_type], freeblock, 0, 0, cptr); + if (r < 0) + return 0; + memcpy(&freeblock, cptr, sizeof(freeblock)); + memcpy(cptr, &tmp, sizeof(tmp)); + } + + rec = (Record) xmalloc (sizeof(*rec)); + rec->sysno = sysno; + memcpy(&compression_method, p->tmp_buf + sizeof(zint) + sizeof(short), + sizeof(compression_method)); + in_buf = p->tmp_buf + sizeof(zint) + sizeof(short) + sizeof(char); + in_size = entry.size - sizeof(short) - sizeof(char); + switch (compression_method) + { + case REC_COMPRESS_BZIP2: +#if HAVE_BZLIB_H + bz_size = entry.size * 20 + 100; + while (1) + { + bz_buf = (char *) xmalloc (bz_size); +#ifdef BZ_CONFIG_ERROR + i = BZ2_bzBuffToBuffDecompress +#else + 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; +#else + yaz_log(YLOG_FATAL, "cannot decompress record(s) in BZIP2 format"); + exit (1); +#endif + break; + case REC_COMPRESS_NONE: + break; + } + for (i = 0; iinfo[i] = 0; + + nptr = in_buf; /* skip ref count */ + while (nptr < in_buf + in_size) + { + zint this_sysno; + int len; + rec_decode_zint (&this_sysno, nptr, &len); + nptr += len; + + for (i = 0; i < REC_NO_INFO; i++) + { + int this_size; + rec_decode_unsigned (&this_size, nptr, &len); + nptr += len; + + if (this_size == 0) + continue; + rec->size[i] = this_size-1; + + if (rec->size[i]) + { + rec->info[i] = nptr; + nptr += rec->size[i]; + } + else + rec->info[i] = NULL; + } + if (this_sysno == sysno) + break; + } + for (i = 0; iinfo[i] && rec->size[i]) + { + char *np = xmalloc (rec->size[i]+1); + memcpy(np, rec->info[i], rec->size[i]); + np[rec->size[i]] = '\0'; + rec->info[i] = np; + } + else + { + assert(rec->info[i] == 0); + assert(rec->size[i] == 0); + } + } + xfree (bz_buf); + rec_cache_insert(p, rec, recordFlagNop); + return rec; +} + +Record rec_get(Records p, SYSNO sysno) { - assert (p); + Record rec; + zebra_mutex_lock (&p->mutex); + + rec = rec_get_int (p, sysno); + zebra_mutex_unlock (&p->mutex); + return rec; +} + +static Record rec_new_int(Records p) +{ + int i; + SYSNO sysno; + Record rec; + + assert(p); + rec = (Record) xmalloc (sizeof(*rec)); + if (1 || p->head.index_free == 0) + sysno = (p->head.index_last)++; + else + { + struct record_index_entry entry; + + read_indx (p, p->head.index_free, &entry, sizeof(entry), 0); + sysno = p->head.index_free; + p->head.index_free = entry.next; + } + (p->head.no_records)++; + rec->sysno = sysno; + for (i = 0; i < REC_NO_INFO; i++) + { + rec->info[i] = NULL; + rec->size[i] = 0; + } + rec_cache_insert(p, rec, recordFlagNew); + return rec; } + +Record rec_new(Records p) +{ + Record rec; + zebra_mutex_lock (&p->mutex); + + rec = rec_new_int (p); + zebra_mutex_unlock (&p->mutex); + return rec; +} + +void rec_del(Records p, Record *recpp) +{ + Record *recp; + + zebra_mutex_lock (&p->mutex); + (p->head.no_records)--; + if ((recp = rec_cache_lookup (p, (*recpp)->sysno, recordFlagDelete))) + { + rec_rm(recp); + *recp = *recpp; + } + else + { + rec_cache_insert(p, *recpp, recordFlagDelete); + rec_rm(recpp); + } + zebra_mutex_unlock (&p->mutex); + *recpp = NULL; +} + +void rec_put(Records p, Record *recpp) +{ + Record *recp; + + zebra_mutex_lock (&p->mutex); + if ((recp = rec_cache_lookup (p, (*recpp)->sysno, recordFlagWrite))) + { + rec_rm(recp); + *recp = *recpp; + } + else + { + rec_cache_insert(p, *recpp, recordFlagWrite); + rec_rm(recpp); + } + zebra_mutex_unlock (&p->mutex); + *recpp = NULL; +} + +void rec_rm(Record *recpp) +{ + int i; + + if (!*recpp) + return ; + for (i = 0; i < REC_NO_INFO; i++) + xfree ((*recpp)->info[i]); + xfree (*recpp); + *recpp = NULL; +} + +Record rec_cp(Record rec) +{ + Record n; + int i; + + n = (Record) xmalloc (sizeof(*n)); + n->sysno = rec->sysno; + for (i = 0; i < REC_NO_INFO; i++) + if (!rec->info[i]) + { + n->info[i] = NULL; + n->size[i] = 0; + } + else + { + n->size[i] = rec->size[i]; + n->info[i] = (char *) xmalloc (rec->size[i]); + memcpy(n->info[i], rec->info[i], rec->size[i]); + } + return n; +} + + +char *rec_strdup(const char *s, size_t *len) +{ + char *p; + + if (!s) + { + *len = 0; + return NULL; + } + *len = strlen(s)+1; + p = (char *) xmalloc (*len); + strcpy(p, s); + return p; +} +