librsync  2.3.4
util.h
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1 /*= -*- c-basic-offset: 4; indent-tabs-mode: nil; -*-
2  *
3  * librsync -- library for network deltas
4  *
5  * Copyright (C) 1999, 2000, 2001 by Martin Pool <mbp@sourcefrog.net>
6  * Copyright (C) 1999 by Andrew Tridgell <tridge@samba.org>
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public License
10  * as published by the Free Software Foundation; either version 2.1 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with this program; if not, write to the Free Software
20  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  */
22 
23 /** \file util.h
24  * Misc utility functions used by librsync. */
25 #ifndef UTIL_H
26 # define UTIL_H
27 
28 # include <stddef.h>
29 # include "librsync.h"
30 
31 void *rs_alloc(size_t size, char const *name);
32 void *rs_realloc(void *ptr, size_t size, char const *name);
33 void *rs_alloc_struct0(size_t size, char const *name);
34 
35 void rs_bzero(void *buf, size_t size);
36 
37 int rs_long_ln2(rs_long_t v);
38 int rs_long_sqrt(rs_long_t v);
39 
40 /** Allocate and zero-fill an instance of TYPE. */
41 # define rs_alloc_struct(type) \
42  ((type *) rs_alloc_struct0(sizeof(type), #type))
43 
44 # ifdef __GNUC__
45 # define UNUSED(x) x __attribute__((unused))
46 # elif defined(__LCLINT__) || defined(S_SPLINT_S)
47 # define UNUSED(x) /*@unused@*/ x
48 # else /* !__GNUC__ && !__LCLINT__ */
49 # define UNUSED(x) x
50 # endif /* !__GNUC__ && !__LCLINT__ */
51 
52 #endif /* !UTIL_H */
Public header for librsync.