libctf: add new dynhash functions

Future commits will use these.

ctf_dynhash_elements: count elements in a dynhash
ctf_dynhash_lookup_kv: look up and return pointers to the original key
                       and value in a dynhash (the only way of getting
                       a reference to the original key)
ctf_dynhash_iter_find: iterate until an item is found, then return its
                       key
ctf_dynhash_cinsert: insert a const key / value into a dynhash (a thim
                     wrapper in a new header dedicated to inline
                     functions).

As with the rest of ctf_dynhash, this is not public API.  No impact
on existing callers is expected.

libctf/
	* ctf-inlines.h: New file.
	* ctf-impl.h: Include it.
	(ctf_hash_iter_find_f): New typedef.
	(ctf_dynhash_elements): New.
	(ctf_dynhash_lookup_kv): New.
	(ctf_dynhash_iter_find): New.
	* ctf-hash.c (ctf_dynhash_lookup_kv): New.
	(ctf_traverse_find_cb_arg_t): New.
	(ctf_hashtab_traverse_find): New.
	(ctf_dynhash_iter_find): New.
	(ctf_dynhash_elements): New.

1 files changed, 45 insertions, 0 deletions

diff --git a/libctf/ctf-inlines.h b/libctf/ctf-inlines.h
new file mode 100644
index 0000000..ad74b39
--- /dev/null
+++ b/libctf/ctf-inlines.h
@@ -0,0 +1,45 @@
+/* Inline functions.
+   Copyright (C) 2020 Free Software Foundation, Inc.
+
+   This file is part of libctf.
+
+   libctf 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 3, 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; see the file COPYING.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef	_CTF_INLINES_H
+#define	_CTF_INLINES_H
+
+#ifdef	__cplusplus
+extern "C"
+{
+#endif
+
+#include "config.h"
+
+#ifndef _libctf_malloc_
+#error "ctf-inlines.h" should not be included directly: include "ctf-impl.h".
+#endif
+
+
+static inline int
+ctf_dynhash_cinsert (ctf_dynhash_t *h, const void *k, const void *v)
+{
+  return ctf_dynhash_insert (h, (void *) k, (void *) v);
+}
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* _CTF_INLINES_H */