1/*
2 * libjingle
3 * Copyright 2004--2005, Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 *  1. Redistributions of source code must retain the above copyright notice,
9 *     this list of conditions and the following disclaimer.
10 *  2. Redistributions in binary form must reproduce the above copyright notice,
11 *     this list of conditions and the following disclaimer in the documentation
12 *     and/or other materials provided with the distribution.
13 *  3. The name of the author may not be used to endorse or promote products
14 *     derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#ifndef TALK_BASE_COMMON_H_
29#define TALK_BASE_COMMON_H_
30
31#include "talk/base/constructormagic.h"
32
33#if defined(_MSC_VER)
34// warning C4355: 'this' : used in base member initializer list
35#pragma warning(disable:4355)
36#endif
37
38//////////////////////////////////////////////////////////////////////
39// General Utilities
40//////////////////////////////////////////////////////////////////////
41
42#ifndef UNUSED
43#define UNUSED(x) Unused(static_cast<const void *>(&x))
44#define UNUSED2(x,y) Unused(static_cast<const void *>(&x)); Unused(static_cast<const void *>(&y))
45#define UNUSED3(x,y,z) Unused(static_cast<const void *>(&x)); Unused(static_cast<const void *>(&y)); Unused(static_cast<const void *>(&z))
46#define UNUSED4(x,y,z,a) Unused(static_cast<const void *>(&x)); Unused(static_cast<const void *>(&y)); Unused(static_cast<const void *>(&z)); Unused(static_cast<const void *>(&a))
47#define UNUSED5(x,y,z,a,b) Unused(static_cast<const void *>(&x)); Unused(static_cast<const void *>(&y)); Unused(static_cast<const void *>(&z)); Unused(static_cast<const void *>(&a)); Unused(static_cast<const void *>(&b))
48inline void Unused(const void *) { }
49#endif // UNUSED
50
51#ifndef WIN32
52#define strnicmp(x,y,n) strncasecmp(x,y,n)
53#define stricmp(x,y) strcasecmp(x,y)
54
55// TODO: Remove this. std::max should be used everywhere in the code.
56// NOMINMAX must be defined where we include <windows.h>.
57#define stdmax(x,y) std::max(x,y)
58#else
59#define stdmax(x,y) talk_base::_max(x,y)
60#endif
61
62
63#define ARRAY_SIZE(x) (static_cast<int>((sizeof(x)/sizeof(x[0]))))
64
65/////////////////////////////////////////////////////////////////////////////
66// Assertions
67/////////////////////////////////////////////////////////////////////////////
68
69#ifndef ENABLE_DEBUG
70#define ENABLE_DEBUG _DEBUG
71#endif  // !defined(ENABLE_DEBUG)
72
73#if ENABLE_DEBUG
74
75namespace talk_base {
76
77// Break causes the debugger to stop executing, or the program to abort
78void Break();
79
80// LogAssert writes information about an assertion to the log
81void LogAssert(const char * function, const char * file, int line,
82               const char * expression);
83
84inline bool Assert(bool result, const char * function, const char * file,
85                   int line, const char * expression) {
86  if (!result) {
87    LogAssert(function, file, line, expression);
88    Break();
89    return false;
90  }
91  return true;
92}
93
94}  // namespace talk_base
95
96#if defined(_MSC_VER) && _MSC_VER < 1300
97#define __FUNCTION__ ""
98#endif
99
100#ifndef ASSERT
101#define ASSERT(x) (void)talk_base::Assert((x),__FUNCTION__,__FILE__,__LINE__,#x)
102#endif
103
104#ifndef VERIFY
105#define VERIFY(x) talk_base::Assert((x),__FUNCTION__,__FILE__,__LINE__,#x)
106#endif
107
108#else // !ENABLE_DEBUG
109
110namespace talk_base {
111
112inline bool ImplicitCastToBool(bool result) { return result; }
113
114}  // namespace talk_base
115
116#ifndef ASSERT
117#define ASSERT(x) (void)0
118#endif
119
120#ifndef VERIFY
121#define VERIFY(x) talk_base::ImplicitCastToBool(x)
122#endif
123
124#endif // !ENABLE_DEBUG
125
126#define COMPILE_TIME_ASSERT(expr)       char CTA_UNIQUE_NAME[expr]
127#define CTA_UNIQUE_NAME                 MAKE_NAME(__LINE__)
128#define CTA_MAKE_NAME(line)             MAKE_NAME2(line)
129#define CTA_MAKE_NAME2(line)            constraint_ ## line
130
131#ifdef __GNUC__
132// Forces compiler to inline, even against its better judgement. Use wisely.
133#define FORCE_INLINE __attribute__((always_inline))
134#else
135#define FORCE_INLINE
136#endif
137
138#endif // TALK_BASE_COMMON_H_
139