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Comparing deliantra/server/include/compiler.h (file contents):
Revision 1.3 by root, Tue Jan 5 09:01:22 2010 UTC vs.
Revision 1.20 by root, Wed Dec 5 19:03:26 2018 UTC

1/* 1/*
2 * This file is part of Deliantra, the Roguelike Realtime MMORPG. 2 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
3 * 3 *
4 * Copyright (©) 2009 Marc Alexander Lehmann / Robin Redeker / the Deliantra team 4 * Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
5 * Copyright (©) 2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 * 6 *
6 * Deliantra is free software: you can redistribute it and/or modify it under 7 * Deliantra is free software: you can redistribute it and/or modify it under
7 * the terms of the Affero GNU General Public License as published by the 8 * the terms of the Affero GNU General Public License as published by the
8 * Free Software Foundation, either version 3 of the License, or (at your 9 * Free Software Foundation, either version 3 of the License, or (at your
9 * option) any later version. 10 * option) any later version.
10 * 11 *
11 * This program is distributed in the hope that it will be useful, 12 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details. 15 * GNU General Public License for more details.
15 * 16 *
16 * You should have received a copy of the Affero GNU General Public License 17 * You should have received a copy of the Affero GNU General Public License
17 * and the GNU General Public License along with this program. If not, see 18 * and the GNU General Public License along with this program. If not, see
18 * <http://www.gnu.org/licenses/>. 19 * <http://www.gnu.org/licenses/>.
19 * 20 *
20 * The authors can be reached via e-mail to <support@deliantra.net> 21 * The authors can be reached via e-mail to <support@deliantra.net>
21 */ 22 */
22 23
23#ifndef COMPILER_H 24#ifndef COMPILER_H
24#define COMPILER_H 25#define COMPILER_H
25 26
26#define GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 27// this was the origin of libecb, which is now it's own library
27 28#include "ecb.h"
28#if GCC_VERSION(3,0)
29# define attribute(attrlist) __attribute__(attrlist)
30#else
31# define attribute(attrlist)
32#endif
33
34#if GCC_VERSION(3,0)
35# define is_constant(c) __builtin_constant_p (c)
36# define expect(expr,value) __builtin_expect ((expr),(value))
37# define prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
38# define noinline __attribute__((__noinline__))
39#else
40# define is_constant(c) 0
41# define expect(expr,value) (expr)
42# define prefetch(addr,rw,locality)
43# define noinline
44#endif
45
46#if GCC_VERSION(3, 0)
47# define decltype(x) typeof(x)
48#endif
49
50#if GCC_VERSION(4,5)
51# define unreachable() __builtin_unreachable ()
52#else
53 // this seems to work fine, but gcc always emits a warning for it :/
54 static inline void unreachable () attribute ((noreturn));
55 static inline void unreachable () { }
56#endif
57
58// put into ifs if you are very sure that the expression
59// is mostly true or mosty false. note that these return
60// booleans, not the expression.
61#define expect_false(expr) expect ((expr) ? 1 : 0, 0)
62#define expect_true(expr) expect ((expr) ? 1 : 0, 1)
63
64// try to tell the compiler tat some condition is definitely true
65#define assume(cond) do { if (!(cond)) unreachable (); } while (0)
66 29
67#endif 30#endif
68 31

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