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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
commit071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch)
tree5deda65b8d7b04d1f4cbc534c3206d328e1267ec /gdb/bcache.h
parent1730ec6b1848f0f32154277f788fb29f88d8475b (diff)
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Initial creation of sourceware repository
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diff --git a/gdb/bcache.h b/gdb/bcache.h
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-/* Include file cached obstack implementation.
- Written by Fred Fish (fnf@cygnus.com)
- Copyright 1995 Free Software Foundation, Inc.
-
-This file is part of GDB.
-
-This program 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 of the License, or
-(at your option) any later version.
-
-This program 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#ifndef BCACHE_H
-#define BCACHE_H 1
-
-#define BCACHE_HASHLENGTH 12 /* Number of bits in hash value */
-#define BCACHE_HASHSIZE (1 << BCACHE_HASHLENGTH)
-#define BCACHE_MAXLENGTH 128
-
-/* Note that the user data is stored in data[]. Since it can be any type,
- it needs to have the same alignment as the most strict alignment of
- any type on the host machine. So do it the same way obstack does. */
-
-struct hashlink {
- struct hashlink *next;
- union {
- char data[1];
- double dummy;
- } d;
-};
-
-/* BCACHE_DATA is used to get the address of the cached data. */
-
-#define BCACHE_DATA(p) ((p)->d.data)
-
-/* BCACHE_DATA_ALIGNMENT is used to get the offset of the start of
- cached data within the hashlink struct. This value, plus the
- size of the cached data, is the amount of space to allocate for
- a hashlink struct to hold the next pointer and the data. */
-
-#define BCACHE_DATA_ALIGNMENT \
- (((char *) BCACHE_DATA((struct hashlink*) 0) - (char *) 0))
-
-struct bcache {
- struct obstack cache;
- struct hashlink **indextable[BCACHE_MAXLENGTH];
- int cache_hits;
- int cache_misses;
- int cache_bytes;
- int cache_savings;
- int bcache_overflows;
-};
-
-extern void *
-bcache PARAMS ((void *bytes, int count, struct bcache *bcachep));
-
-#if MAINTENANCE_CMDS
-
-extern void
-print_bcache_statistics PARAMS ((struct bcache *, char *));
-
-#endif /* MAINTENANCE_CMDS */
-
-#endif /* BCACHE_H */