Return unique_xmalloc_ptr from target_fileio_read_stralloc

[deliverable/binutils-gdb.git] / gdb / bcache.h

diff --git a/gdb/bcache.h b/gdb/bcache.h
index 6c3a63d2ba882ff4814b66cbb077323f3da78b12..f9590aa270c36dc39cad23469edd9ec75e27f5b3 100644 (file)
--- a/gdb/bcache.h
+++ b/gdb/bcache.h
@@ -2,13 +2,13 @@
    Written by Fred Fish <fnf@cygnus.com>
    Rewritten by Jim Blandy <jimb@cygnus.com>
 
-   Copyright 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 1999-2017 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
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -17,9 +17,7 @@
    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.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #ifndef BCACHE_H
 #define BCACHE_H 1
@@ -143,23 +141,36 @@ struct bcache;
 
 /* Find a copy of the LENGTH bytes at ADDR in BCACHE.  If BCACHE has
    never seen those bytes before, add a copy of them to BCACHE.  In
-   either case, return a pointer to BCACHE's copy of that string.  */
-extern void *bcache (const void *addr, int length, struct bcache *bcache);
+   either case, return a pointer to BCACHE's copy of that string.
+   Since the cached value is ment to be read-only, return a const
+   buffer.  */
+extern const void *bcache (const void *addr, int length,
+                          struct bcache *bcache);
+
+/* Like bcache, but if ADDED is not NULL, set *ADDED to true if the
+   bytes were newly added to the cache, or to false if the bytes were
+   found in the cache.  */
+extern const void *bcache_full (const void *addr, int length,
+                               struct bcache *bcache, int *added);
 
 /* Free all the storage used by BCACHE.  */
 extern void bcache_xfree (struct bcache *bcache);
 
 /* Create a new bcache object.  */
-extern struct bcache *bcache_xmalloc (void);
+extern struct bcache *bcache_xmalloc (
+    unsigned long (*hash_function)(const void *, int length),
+    int (*compare_function)(const void *, const void *, int length));
 
 /* Print statistics on BCACHE's memory usage and efficacity at
    eliminating duplication.  TYPE should be a string describing the
    kind of data BCACHE holds.  Statistics are printed using
    `printf_filtered' and its ilk.  */
-extern void print_bcache_statistics (struct bcache *bcache, char *type);
+extern void print_bcache_statistics (struct bcache *bcache, const char *type);
 extern int bcache_memory_used (struct bcache *bcache);
 
-/* The hash function */
+/* The hash functions */
 extern unsigned long hash(const void *addr, int length);
+extern unsigned long hash_continue (const void *addr, int length,
+                                    unsigned long h);
 
 #endif /* BCACHE_H */