gcc:

[pf3gnuchains/gcc-fork.git] / include / hashtab.h

diff --git a/include/hashtab.h b/include/hashtab.h
index 6576522..1cd406d 100644 (file)
--- a/include/hashtab.h
+++ b/include/hashtab.h
@@ -1,5 +1,6 @@
 /* An expandable hash tables datatype.  
-   Copyright (C) 1999, 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005, 2009
+   Free Software Foundation, Inc.
    Contributed by Vladimir Makarov (vmakarov@cygnus.com).
 
 This program is free software; you can redistribute it and/or modify
@@ -14,7 +15,7 @@ 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.  */
+Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
 
 /* This package implements basic hash table functionality.  It is possible
    to search for an entry, create an entry and destroy an entry.
@@ -81,14 +82,22 @@ typedef void (*htab_free) (void *);
 typedef void *(*htab_alloc_with_arg) (void *, size_t, size_t);
 typedef void (*htab_free_with_arg) (void *, void *);
 
+/* This macro defines reserved value for empty table entry.  */
+
+#define HTAB_EMPTY_ENTRY    ((PTR) 0)
+
+/* This macro defines reserved value for table entry which contained
+   a deleted element. */
+
+#define HTAB_DELETED_ENTRY  ((PTR) 1)
+
 /* Hash tables are of the following type.  The structure
    (implementation) of this type is not needed for using the hash
    tables.  All work with hash table should be executed only through
    functions mentioned below.  The size of this structure is subject to
    change.  */
 
-struct htab GTY(())
-{
+struct GTY(()) htab {
   /* Pointer to hash function.  */
   htab_hash hash_f;