/*
- * Copyright (C) 1994, Index Data I/S
+ * Copyright (C) 1994-1999, Index Data
* All rights reserved.
* Sebastian Hammer, Adam Dickmeiss
*
* $Log: bfile.c,v $
- * Revision 1.11 1995-09-04 12:33:21 adam
+ * Revision 1.33 2002-04-04 14:14:13 adam
+ * Multiple registers (alpha early)
+ *
+ * Revision 1.32 2000/03/15 15:00:30 adam
+ * First work on threaded version.
+ *
+ * Revision 1.31 1999/12/08 15:03:11 adam
+ * Implemented bf_reset.
+ *
+ * Revision 1.30 1999/10/14 14:33:49 adam
+ * Added truncation 5=106.
+ *
+ * Revision 1.29 1999/05/26 07:49:12 adam
+ * C++ compilation.
+ *
+ * Revision 1.28 1999/05/12 13:08:05 adam
+ * First version of ISAMS.
+ *
+ * Revision 1.27 1999/02/02 14:50:01 adam
+ * Updated WIN32 code specific sections. Changed header.
+ *
+ * Revision 1.26 1998/02/17 10:32:52 adam
+ * Fixed bug: binary files weren't opened with flag b on NT.
+ *
+ * Revision 1.25 1997/10/27 14:25:38 adam
+ * Fixed memory leaks.
+ *
+ * Revision 1.24 1997/09/18 08:59:16 adam
+ * Extra generic handle for the character mapping routines.
+ *
+ * Revision 1.23 1997/09/17 12:19:06 adam
+ * Zebra version corresponds to YAZ version 1.4.
+ * Changed Zebra server so that it doesn't depend on global common_resource.
+ *
+ * Revision 1.22 1997/09/09 13:37:52 adam
+ * Partial port to WIN95/NT.
+ *
+ * Revision 1.21 1996/10/29 13:56:13 adam
+ * Include of zebrautl.h instead of alexutil.h.
+ *
+ * Revision 1.20 1996/03/26 15:59:04 adam
+ * The directory of the shadow table file can be specified by the new
+ * bf_lockDir call.
+ *
+ * Revision 1.19 1996/02/05 12:28:58 adam
+ * Removed a LOG_LOG message.
+ *
+ * Revision 1.18 1996/01/02 08:59:06 quinn
+ * Changed "commit" setting to "shadow".
+ *
+ * Revision 1.17 1995/12/11 09:03:51 adam
+ * New function: cf_unlink.
+ * New member of commit file head: state (0) deleted, (1) hash file.
+ *
+ * Revision 1.16 1995/12/08 16:21:13 adam
+ * Work on commit/update.
+ *
+ * Revision 1.15 1995/12/01 16:24:28 adam
+ * Commit files use separate meta file area.
+ *
+ * Revision 1.14 1995/12/01 11:37:21 adam
+ * Cached/commit files implemented as meta-files.
+ *
+ * Revision 1.13 1995/11/30 17:00:49 adam
+ * Several bug fixes. Commit system runs now.
+ *
+ * Revision 1.12 1995/11/30 08:33:10 adam
+ * Started work on commit facility.
+ *
+ * Revision 1.11 1995/09/04 12:33:21 adam
* Various cleanup. YAZ util used instead.
*
* Revision 1.10 1994/08/25 10:15:54 quinn
*/
#include <stdio.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <unistd.h>
#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#ifdef WIN32
+#include <io.h>
+#else
+#include <unistd.h>
+#endif
-#include <alexutil.h>
+#include <zebrautl.h>
#include <bfile.h>
+#include "cfile.h"
+
+struct BFiles_struct {
+ MFile_area commit_area;
+ MFile_area_struct *register_area;
+ char *base;
+ char *cache_fname;
+};
+
+BFiles bfs_create (const char *spec, const char *base)
+{
+ BFiles bfs = (BFiles) xmalloc (sizeof(*bfs));
+ bfs->commit_area = NULL;
+ bfs->base = 0;
+ bfs->cache_fname = 0;
+ if (base)
+ bfs->base = xstrdup (base);
+ bfs->register_area = mf_init("register", spec, base);
+ if (!bfs->register_area)
+ {
+ bfs_destroy(bfs);
+ return 0;
+ }
+ return bfs;
+}
+
+void bfs_destroy (BFiles bfs)
+{
+ xfree (bfs->cache_fname);
+ xfree (bfs->base);
+ mf_destroy (bfs->commit_area);
+ mf_destroy (bfs->register_area);
+ xfree (bfs);
+}
+
+static FILE *open_cache (BFiles bfs, const char *flags)
+{
+ FILE *file;
+
+ file = fopen (bfs->cache_fname, flags);
+ return file;
+}
+
+static void unlink_cache (BFiles bfs)
+{
+ unlink (bfs->cache_fname);
+}
+
+void bf_cache (BFiles bfs, const char *spec)
+{
+ if (spec)
+ {
+ yaz_log (LOG_LOG, "enabling cache spec=%s", spec);
+ if (!bfs->commit_area)
+ bfs->commit_area = mf_init ("shadow", spec, bfs->base);
+ if (bfs->commit_area)
+ {
+ bfs->cache_fname = xmalloc (strlen(bfs->commit_area->dirs->name)+
+ 8);
+ strcpy (bfs->cache_fname, bfs->commit_area->dirs->name);
+ strcat (bfs->cache_fname, "/cache");
+ yaz_log (LOG_LOG, "cache_fname = %s", bfs->cache_fname);
+ }
+ }
+ else
+ bfs->commit_area = NULL;
+}
int bf_close (BFile bf)
{
- mf_close(bf->mf);
- xfree(bf);
- return(0);
+ zebra_lock_rdwr_destroy (&bf->rdwr_lock);
+ if (bf->cf)
+ cf_close (bf->cf);
+ mf_close (bf->mf);
+ xfree (bf);
+ return 0;
}
-BFile bf_open (const char *name, int block_size, int wflag)
+BFile bf_open (BFiles bfs, const char *name, int block_size, int wflag)
{
- BFile tmp = xmalloc(sizeof(BFile_struct));
+ BFile tmp = (BFile) xmalloc(sizeof(BFile_struct));
- if (!(tmp->mf = mf_open(0, name, block_size, wflag)))
+ if (bfs->commit_area)
{
- logf (LOG_FATAL, "Mfopen failed for %s", name);
- return(0);
+ int first_time;
+
+ tmp->mf = mf_open (bfs->register_area, name, block_size, 0);
+ tmp->cf = cf_open (tmp->mf, bfs->commit_area, name, block_size,
+ wflag, &first_time);
+ if (first_time)
+ {
+ FILE *outf;
+
+ outf = open_cache (bfs, "ab");
+ if (!outf)
+ {
+ logf (LOG_FATAL|LOG_ERRNO, "open %s", bfs->cache_fname);
+ exit (1);
+ }
+ fprintf (outf, "%s %d\n", name, block_size);
+ fclose (outf);
+ }
}
+ else
+ {
+ tmp->mf = mf_open(bfs->register_area, name, block_size, wflag);
+ tmp->cf = NULL;
+ }
+ if (!tmp->mf)
+ {
+ logf (LOG_FATAL, "mf_open failed for %s", name);
+ xfree (tmp);
+ return 0;
+ }
+ zebra_lock_rdwr_init (&tmp->rdwr_lock);
return(tmp);
}
-int bf_read (BFile bf, int no, int offset, int num, void *buf)
+int bf_read (BFile bf, int no, int offset, int nbytes, void *buf)
{
- return mf_read(bf->mf, no, offset, num, buf);
+ int r;
+
+ zebra_lock_rdwr_rlock (&bf->rdwr_lock);
+ if (bf->cf)
+ {
+ if ((r = cf_read (bf->cf, no, offset, nbytes, buf)) == -1)
+ r = mf_read (bf->mf, no, offset, nbytes, buf);
+ }
+ else
+ r = mf_read (bf->mf, no, offset, nbytes, buf);
+ zebra_lock_rdwr_runlock (&bf->rdwr_lock);
+ return r;
+}
+
+int bf_write (BFile bf, int no, int offset, int nbytes, const void *buf)
+{
+ int r;
+ zebra_lock_rdwr_wlock (&bf->rdwr_lock);
+ if (bf->cf)
+ r = cf_write (bf->cf, no, offset, nbytes, buf);
+ else
+ r = mf_write (bf->mf, no, offset, nbytes, buf);
+ zebra_lock_rdwr_wunlock (&bf->rdwr_lock);
+ return r;
}
-int bf_write (BFile bf, int no, int offset, int num, const void *buf)
+int bf_commitExists (BFiles bfs)
{
- return mf_write(bf->mf, no, offset, num, buf);
+ FILE *inf;
+
+ inf = open_cache (bfs, "rb");
+ if (inf)
+ {
+ fclose (inf);
+ return 1;
+ }
+ return 0;
+}
+
+void bf_reset (BFiles bfs)
+{
+ mf_reset (bfs->commit_area);
+ mf_reset (bfs->register_area);
+}
+
+void bf_commitExec (BFiles bfs)
+{
+ FILE *inf;
+ int block_size;
+ char path[256];
+ MFile mf;
+ CFile cf;
+ int first_time;
+
+ assert (bfs->commit_area);
+ if (!(inf = open_cache (bfs, "rb")))
+ {
+ logf (LOG_LOG, "No commit file");
+ return ;
+ }
+ while (fscanf (inf, "%s %d", path, &block_size) == 2)
+ {
+ mf = mf_open (bfs->register_area, path, block_size, 1);
+ cf = cf_open (mf, bfs->commit_area, path, block_size, 0, &first_time);
+
+ cf_commit (cf);
+
+ cf_close (cf);
+ mf_close (mf);
+ }
+ fclose (inf);
+}
+
+void bf_commitClean (BFiles bfs, const char *spec)
+{
+ FILE *inf;
+ int block_size;
+ char path[256];
+ MFile mf;
+ CFile cf;
+ int mustDisable = 0;
+ int firstTime;
+
+ if (!bfs->commit_area)
+ {
+ bf_cache (bfs, spec);
+ mustDisable = 1;
+ }
+
+ if (!(inf = open_cache (bfs, "rb")))
+ return ;
+ while (fscanf (inf, "%s %d", path, &block_size) == 2)
+ {
+ mf = mf_open (bfs->register_area, path, block_size, 0);
+ cf = cf_open (mf, bfs->commit_area, path, block_size, 1, &firstTime);
+ cf_unlink (cf);
+ cf_close (cf);
+ mf_close (mf);
+ }
+ fclose (inf);
+ unlink_cache (bfs);
+ if (mustDisable)
+ bf_cache (bfs, 0);
}
projects / idzebra-moved-to-github.git / blobdiff