Update copyright year + FSF address

[idzebra-moved-to-github.git] / bfile / cfile.h

diff --git a/bfile/cfile.h b/bfile/cfile.h
index 5080151..c6b6ba6 100644 (file)
--- a/bfile/cfile.h
+++ b/bfile/cfile.h
@@ -1,26 +1,45 @@
-/*
- * Copyright (C) 1995, Index Data I/S 
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: cfile.h,v $
- * Revision 1.1  1995-11-30 08:33:12  adam
- * Started work on commit facility.
- *
- */
+/* $Id: cfile.h,v 1.19 2006-08-14 10:40:05 adam Exp $
+   Copyright (C) 1995-2006
+   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 this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+
 
 #ifndef CFILE_H
 #define CFILE_H
 
-#define HASH_BUCKET 63
+#include <yaz/yconfig.h>
+
+YAZ_BEGIN_CDECL
+
+#define HASH_BUCKET 15
+
+struct CFile_ph_bucket {     /* structure on disc */
+    zint no[HASH_BUCKET];    /* block number in original file */
+    zint vno[HASH_BUCKET];   /* block number in shadow file */
+    zint this_bucket;        /* this bucket number */
+    zint next_bucket;        /* next bucket number */
+};
 
 struct CFile_hash_bucket {
-    struct CFile_ph_bucket {
-        int no[HASH_BUCKET];
-        int vno[HASH_BUCKET];
-        int this_bucket;
-        int next_bucket;
-    } ph;
+    struct CFile_ph_bucket ph;
     int dirty;
     struct CFile_hash_bucket *h_next, **h_prev;
     struct CFile_hash_bucket *lru_next, *lru_prev;
@@ -28,31 +47,50 @@ struct CFile_hash_bucket {
 
 #define HASH_BSIZE sizeof(struct CFile_ph_bucket)
 
+#define CFILE_FLAT 1
+
 typedef struct CFile_struct
 {
     struct CFile_head {
-        int hash_size;
-        int next_bucket;
-        int next_block;
-        int block_size;
+        int state;               /* 1 = hash, 2 = flat */
+        zint next_block;          /* next free block / last block */
+        int block_size;          /* mfile/bfile block size */
+        int hash_size;           /* no of chains in hash table */
+        zint first_bucket;       /* first hash bucket */
+        zint next_bucket;        /* last hash bucket + 1 = first flat bucket */
+        zint flat_bucket;        /* last flat bucket + 1 */
     } head;
-    int block_fd;
-    int hash_fd;
-    int *array;
+    MFile block_mf;
+    MFile hash_mf;
+    zint *array;
     struct CFile_hash_bucket **parray;
     struct CFile_hash_bucket *bucket_lru_front, *bucket_lru_back;
     int dirty;
-    int bucket_in_memory;
-    int max_bucket_in_memory;
+    zint bucket_in_memory;
+    zint max_bucket_in_memory;
     char *iobuf;
-    MFile mf;
+    MFile rmf;
+    int  no_hits;
+    int  no_miss;
+    Zebra_mutex mutex;
 } *CFile;
 
 int cf_close (CFile cf);
-CFile cf_open (MFile mf, const char *cname, const char *fname,
-               int block_size, int wflag, int *firstp);
-int cf_read (CFile cf, int no, int offset, int num, void *buf);
-int cf_write (CFile cf, int no, int offset, int num, const void *buf);
+CFile cf_open (MFile mf, MFile_area area, const char *fname, int block_size,
+               int wflag, int *firstp);
+int cf_read (CFile cf, zint no, int offset, int nbytes, void *buf);
+int cf_write (CFile cf, zint no, int offset, int nbytes, const void *buf);
+void cf_unlink (CFile cf);
 void cf_commit (CFile cf);
 
+YAZ_END_CDECL
+
 #endif
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+