NCBI C++ ToolKit
macros.h
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1 /* FreeTDS - Library of routines accessing Sybase and Microsoft databases
2  * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Brian Bruns
3  * Copyright (C) 2010-2017 Frediano Ziglio
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Library General Public
7  * License as published by the Free Software Foundation; either
8  * version 2 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Library General Public License for more details.
14  *
15  * You should have received a copy of the GNU Library General Public
16  * License along with this library; if not, write to the
17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18  * Boston, MA 02111-1307, USA.
19  */
20 
21 #ifndef _freetds_macros_h_
22 #define _freetds_macros_h_
23 
24 #ifndef _freetds_config_h_
25 #error should include config.h before
26 #endif
27 
28 #if HAVE_STDDEF_H
29 #include <stddef.h>
30 #endif /* HAVE_STDDEF_H */
31 
32 #include "tds_sysdep_public.h"
33 #include <freetds/sysdep_types.h>
34 
35 #define TDS_ZERO_FREE(x) do {free((x)); (x) = NULL;} while(0)
36 #define TDS_VECTOR_SIZE(x) (sizeof(x)/sizeof(x[0]))
37 
38 #ifdef offsetof
39 #define TDS_OFFSET(type, field) offsetof(type, field)
40 #else
41 #define TDS_OFFSET(type, field) (((char*)&((type*)0)->field)-((char*)0))
42 #endif
43 
44 #if ENABLE_EXTRA_CHECKS
45 # if defined(__llvm__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)))
46 # define TDS_COMPILE_CHECK(name,check) \
47  _Static_assert(check,#name)
48 # elif defined(__GNUC__) && __GNUC__ >= 2
49 # define TDS_COMPILE_CHECK(name,check) \
50  extern int name[(check)?1:-1] __attribute__ ((unused))
51 # else
52 # define TDS_COMPILE_CHECK(name,check) \
53  extern int name[(check)?1:-1]
54 # endif
55 # define TDS_EXTRA_CHECK(stmt) stmt
56 #else
57 # define TDS_COMPILE_CHECK(name,check) \
58  extern int disabled_check_##name
59 # define TDS_EXTRA_CHECK(stmt)
60 #endif
61 
62 #if defined(__GNUC__) && __GNUC__ >= 3
63 # define TDS_LIKELY(x) __builtin_expect(!!(x), 1)
64 # define TDS_UNLIKELY(x) __builtin_expect(!!(x), 0)
65 #else
66 # define TDS_LIKELY(x) (x)
67 # define TDS_UNLIKELY(x) (x)
68 #endif
69 
70 #if ENABLE_EXTRA_CHECKS && defined(__GNUC__) && __GNUC__ >= 4
71 #define TDS_WUR __attribute__ ((__warn_unused_result__))
72 #else
73 #define TDS_WUR
74 #endif
75 
76 #define TDS_INT2PTR(i) ((void*)(((char*)0)+((TDS_INTPTR)(i))))
77 #define TDS_PTR2INT(p) ((int)(((char*)(p))-((char*)0)))
78 
79 #endif
Modified on Sun Jun 16 04:36:04 2024 by modify_doxy.py rev. 669887