* Sebastian Hammer, Adam Dickmeiss
*
* $Log: bfile.c,v $
- * Revision 1.30 1999-10-14 14:33:49 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
struct BFiles_struct {
MFile_area commit_area;
MFile_area_struct *register_area;
- char *lockDir;
+ char *base;
+ char *cache_fname;
};
-BFiles bfs_create (const char *spec)
+BFiles bfs_create (const char *spec, const char *base)
{
BFiles bfs = (BFiles) xmalloc (sizeof(*bfs));
bfs->commit_area = NULL;
- bfs->register_area = mf_init("register", spec);
- bfs->lockDir = 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);
void bfs_destroy (BFiles bfs)
{
- xfree (bfs->lockDir);
+ 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)
{
- char cacheFilename[1024];
FILE *file;
- sprintf (cacheFilename, "%scache",
- bfs->lockDir ? bfs->lockDir : "");
- file = fopen (cacheFilename, flags);
+ file = fopen (bfs->cache_fname, flags);
return file;
}
static void unlink_cache (BFiles bfs)
{
- char cacheFilename[1024];
-
- sprintf (cacheFilename, "%scache",
- bfs->lockDir ? bfs->lockDir : "");
- unlink (cacheFilename);
-}
-
-void bf_lockDir (BFiles bfs, const char *lockDir)
-{
- size_t len;
-
- xfree (bfs->lockDir);
- if (lockDir == NULL)
- lockDir = "";
- len = strlen(lockDir);
- bfs->lockDir = (char *) xmalloc (len+2);
- strcpy (bfs->lockDir, lockDir);
-
- if (len > 0 && bfs->lockDir[len-1] != '/')
- strcpy (bfs->lockDir + len, "/");
+ 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->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)
{
+ zebra_lock_rdwr_destroy (&bf->rdwr_lock);
if (bf->cf)
cf_close (bf->cf);
mf_close (bf->mf);
outf = open_cache (bfs, "ab");
if (!outf)
{
- logf (LOG_FATAL|LOG_ERRNO, "open %scache",
- bfs->lockDir ? bfs->lockDir : "");
+ logf (LOG_FATAL|LOG_ERRNO, "open %s", bfs->cache_fname);
exit (1);
}
fprintf (outf, "%s %d\n", name, block_size);
xfree (tmp);
return 0;
}
+ zebra_lock_rdwr_init (&tmp->rdwr_lock);
return(tmp);
}
{
int r;
- if (bf->cf && (r=cf_read (bf->cf, no, offset, nbytes, buf)) != -1)
- return r;
- return mf_read (bf->mf, no, offset, nbytes, buf);
+ 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)
- return cf_write (bf->cf, no, offset, nbytes, buf);
- return mf_write (bf->mf, no, offset, nbytes, buf);
+ 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_commitExists (BFiles bfs)
return 0;
}
+void bf_reset (BFiles bfs)
+{
+ mf_reset (bfs->commit_area);
+ mf_reset (bfs->register_area);
+}
+
void bf_commitExec (BFiles bfs)
{
FILE *inf;