-/*
- * Copyright (C) 1995-1999, Index Data ApS
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: cfile.c,v $
- * Revision 1.25 1999-05-26 07:49:12 adam
- * C++ compilation.
- *
- * Revision 1.24 1999/05/12 13:08:06 adam
- * First version of ISAMS.
- *
- * Revision 1.23 1998/10/15 13:09:29 adam
- * Minor changes.
- *
- * Revision 1.22 1998/10/13 20:07:22 adam
- * Changed some log messages.
- *
- * Revision 1.21 1998/08/24 17:29:52 adam
- * Minor changes.
- *
- * Revision 1.20 1998/08/07 15:07:13 adam
- * Fixed but in cf_commit_flat.
- *
- * Revision 1.19 1997/02/12 20:37:17 adam
- * Changed the messages logged. No real code changed.
- *
- * Revision 1.18 1996/10/29 13:56:15 adam
- * Include of zebrautl.h instead of alexutil.h.
- *
- * Revision 1.17 1996/04/19 16:49:00 adam
- * Minor changes.
- *
- * Revision 1.16 1996/04/19 16:23:47 adam
- * Serious bug fix in shadow implementation; function new_bucket might
- * set wrong bucket number on new bucket.
- *
- * Revision 1.15 1996/04/18 16:02:56 adam
- * Changed logging a bit.
- * Removed warning message when commiting flat shadow files.
- *
- * Revision 1.14 1996/04/12 07:01:55 adam
- * Yet another bug fix (next_block was initialized to 0; now set to 1).
- *
- * Revision 1.13 1996/04/09 14:48:49 adam
- * Bug fix: offset calculation when using flat files was completely broken.
- *
- * Revision 1.12 1996/04/09 06:47:28 adam
- * Function scan_areadef doesn't use sscanf (%n fails on this Linux).
- *
- * Revision 1.11 1996/03/26 15:59:05 adam
- * The directory of the shadow table file can be specified by the new
- * bf_lockDir call.
- *
- * Revision 1.10 1996/02/07 14:03:46 adam
- * Work on flat indexed shadow files.
- *
- * Revision 1.9 1996/02/07 10:08:43 adam
- * Work on flat shadow (not finished yet).
- *
- * Revision 1.8 1995/12/15 12:36:52 adam
- * Moved hash file information to union.
- * Renamed commit files.
- *
- * Revision 1.7 1995/12/15 10:35:07 adam
- * Changed names of commit files.
- *
- * Revision 1.6 1995/12/11 09:03:53 adam
- * New function: cf_unlink.
- * New member of commit file head: state (0) deleted, (1) hash file.
- *
- * Revision 1.5 1995/12/08 16:21:14 adam
- * Work on commit/update.
- *
- * Revision 1.4 1995/12/01 16:24:28 adam
- * Commit files use separate meta file area.
- *
- * Revision 1.3 1995/12/01 11:37:22 adam
- * Cached/commit files implemented as meta-files.
- *
- * Revision 1.2 1995/11/30 17:00:49 adam
- * Several bug fixes. Commit system runs now.
- *
- * Revision 1.1 1995/11/30 08:33:11 adam
- * Started work on commit facility.
- *
- */
+/* $Id: cfile.c,v 1.27 2002-08-02 19:26:55 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.
+*/
+
+
#include <assert.h>
#include <stdlib.h>
memset (cf->iobuf, 0, cf->head.block_size);
cf->no_hits = 0;
cf->no_miss = 0;
+ zebra_mutex_init (&cf->mutex);
return cf;
}
int block;
assert (cf);
+ zebra_mutex_lock (&cf->mutex);
if (!(block = cf_lookup (cf, no)))
+ {
+ zebra_mutex_unlock (&cf->mutex);
return -1;
+ }
+ zebra_mutex_unlock (&cf->mutex);
if (!mf_read (cf->block_mf, block, offset, nbytes, buf))
{
logf (LOG_FATAL|LOG_ERRNO, "cf_read no=%d, block=%d", no, block);
int block;
assert (cf);
+ zebra_mutex_lock (&cf->mutex);
if (!(block = cf_lookup (cf, no)))
{
block = cf_new (cf, no);
nbytes = 0;
}
}
+ zebra_mutex_unlock (&cf->mutex);
if (mf_write (cf->block_mf, block, offset, nbytes, buf))
{
logf (LOG_FATAL|LOG_ERRNO, "cf_write no=%d, block=%d", no, block);
xfree (cf->array);
xfree (cf->parray);
xfree (cf->iobuf);
+ zebra_mutex_destroy (&cf->mutex);
xfree (cf);
return 0;
}