/* An expandable hash tables datatype.
- Copyright (C) 1999, 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1999-2016 Free Software Foundation, Inc.
Contributed by Vladimir Makarov (vmakarov@cygnus.com).
This program is free software; you can redistribute it and/or modify
#include "ansidecl.h"
-#ifndef GTY
-#define GTY(X)
-#endif
-
/* The type for a hash code. */
typedef unsigned int hashval_t;
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 htab {
/* Pointer to hash function. */
htab_hash hash_f;
htab_del del_f;
/* Table itself. */
- void ** GTY ((use_param, length ("%h.size"))) entries;
+ void **entries;
/* Current size (in entries) of the hash table. */
size_t size;
htab_free free_f;
/* Alternate allocate/free functions, which take an extra argument. */
- void * GTY((skip)) alloc_arg;
+ void *alloc_arg;
htab_alloc_with_arg alloc_with_arg_f;
htab_free_with_arg free_with_arg_f;
void *, htab_alloc_with_arg,
htab_free_with_arg);
+extern htab_t htab_create_typed_alloc (size_t, htab_hash, htab_eq, htab_del,
+ htab_alloc, htab_alloc, htab_free);
+
/* Backward-compatibility functions. */
extern htab_t htab_create (size_t, htab_hash, htab_eq, htab_del);
extern htab_t htab_try_create (size_t, htab_hash, htab_eq, htab_del);