globalDefinitions_visCPP.hpp revision 844:bd02caa94611 
1/*
2 * Copyright 1997-2009 Sun Microsystems, Inc.  All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25// This file holds compiler-dependent includes,
26// globally used constants & types, class (forward)
27// declarations and a few frequently used utility functions.
28
29# include <ctype.h>
30# include <string.h>
31# include <stdarg.h>
32# include <stdlib.h>
33# include <stddef.h>// for offsetof
34# include <io.h>    // for stream.cpp
35# include <float.h> // for _isnan
36# include <stdio.h> // for va_list
37# include <time.h>
38# include <fcntl.h>
39// Need this on windows to get the math constants (e.g., M_PI).
40#define _USE_MATH_DEFINES
41# include <math.h>
42
43// 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures
44// When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in
45// system header files.  On 32-bit architectures, there is no problem.
46// On 64-bit architectures, defining NULL as a 32-bit constant can cause
47// problems with varargs functions: C++ integral promotion rules say for
48// varargs, we pass the argument 0 as an int.  So, if NULL was passed to a
49// varargs function it will remain 32-bits.  Depending on the calling
50// convention of the machine, if the argument is passed on the stack then
51// only 32-bits of the "NULL" pointer may be initialized to zero.  The
52// other 32-bits will be garbage.  If the varargs function is expecting a
53// pointer when it extracts the argument, then we may have a problem.
54//
55// Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.
56#ifdef _LP64
57#undef NULL
58// 64-bit Windows uses a P64 data model (not LP64, although we define _LP64)
59// Since longs are 32-bit we cannot use 0L here.  Use the Visual C++ specific
60// 64-bit integer-suffix (i64) instead.
61#define NULL 0i64
62#else
63#ifndef NULL
64#define NULL 0
65#endif
66#endif
67
68// NULL vs NULL_WORD:
69// On Linux NULL is defined as a special type '__null'. Assigning __null to
70// integer variable will cause gcc warning. Use NULL_WORD in places where a
71// pointer is stored as integer value.
72#define NULL_WORD NULL
73
74// Compiler-specific primitive types
75typedef unsigned __int8  uint8_t;
76typedef unsigned __int16 uint16_t;
77typedef unsigned __int32 uint32_t;
78typedef unsigned __int64 uint64_t;
79
80#ifdef _WIN64
81typedef unsigned __int64 uintptr_t;
82#else
83typedef unsigned int uintptr_t;
84#endif
85typedef signed   __int8  int8_t;
86typedef signed   __int16 int16_t;
87typedef signed   __int32 int32_t;
88typedef signed   __int64 int64_t;
89#ifdef _WIN64
90typedef signed   __int64 intptr_t;
91typedef signed   __int64 ssize_t;
92#else
93typedef signed   int intptr_t;
94typedef signed   int ssize_t;
95#endif
96
97//----------------------------------------------------------------------------------------------------
98// Additional Java basic types
99
100typedef unsigned char    jubyte;
101typedef unsigned short   jushort;
102typedef unsigned int     juint;
103typedef unsigned __int64 julong;
104
105//----------------------------------------------------------------------------------------------------
106// Special (possibly not-portable) casts
107// Cast floats into same-size integers and vice-versa w/o changing bit-pattern
108
109inline jint    jint_cast   (jfloat  x)           { return *(jint*   )&x; }
110inline jlong   jlong_cast  (jdouble x)           { return *(jlong*  )&x; }
111
112inline jfloat  jfloat_cast (jint    x)           { return *(jfloat* )&x; }
113inline jdouble jdouble_cast(jlong   x)           { return *(jdouble*)&x; }
114
115
116//----------------------------------------------------------------------------------------------------
117// Non-standard stdlib-like stuff:
118inline int strcasecmp(const char *s1, const char *s2) { return _stricmp(s1,s2); }
119
120
121//----------------------------------------------------------------------------------------------------
122// Debugging
123
124#if _WIN64
125extern "C" void breakpoint();
126#define BREAKPOINT ::breakpoint()
127#else
128#define BREAKPOINT __asm { int 3 }
129#endif
130
131//----------------------------------------------------------------------------------------------------
132// Checking for nanness
133
134inline int g_isnan(jfloat  f)                    { return _isnan(f); }
135inline int g_isnan(jdouble f)                    { return _isnan(f); }
136
137//----------------------------------------------------------------------------------------------------
138// Checking for finiteness
139
140inline int g_isfinite(jfloat  f)                 { return _finite(f); }
141inline int g_isfinite(jdouble f)                 { return _finite(f); }
142
143//----------------------------------------------------------------------------------------------------
144// Constant for jlong (specifying an long long constant is C++ compiler specific)
145
146// Build a 64bit integer constant on with Visual C++
147#define CONST64(x)  (x ## i64)
148#define UCONST64(x) ((uint64_t)CONST64(x))
149
150const jlong min_jlong = CONST64(0x8000000000000000);
151const jlong max_jlong = CONST64(0x7fffffffffffffff);
152
153//----------------------------------------------------------------------------------------------------
154// Miscellaneous
155
156// Visual Studio 2005 deprecates POSIX names - use ISO C++ names instead
157#if _MSC_VER >= 1400
158#define open _open
159#define close _close
160#define read  _read
161#define write _write
162#define lseek _lseek
163#define unlink _unlink
164#define strdup _strdup
165#endif
166
167#pragma warning( disable : 4100 ) // unreferenced formal parameter
168#pragma warning( disable : 4127 ) // conditional expression is constant
169#pragma warning( disable : 4514 ) // unreferenced inline function has been removed
170#pragma warning( disable : 4244 ) // possible loss of data
171#pragma warning( disable : 4512 ) // assignment operator could not be generated
172#pragma warning( disable : 4201 ) // nonstandard extension used : nameless struct/union (needed in windows.h)
173#pragma warning( disable : 4511 ) // copy constructor could not be generated
174#pragma warning( disable : 4291 ) // no matching operator delete found; memory will not be freed if initialization thows an exception
175#if _MSC_VER >= 1400
176#pragma warning( disable : 4996 ) // unsafe string functions. Same as define _CRT_SECURE_NO_WARNINGS/_CRT_SECURE_NO_DEPRICATE
177#endif
178
179inline int vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) {
180  // If number of characters written == count, Windows doesn't write a
181  // terminating NULL, so we do it ourselves.
182  int ret = _vsnprintf(buf, count, fmt, argptr);
183  if (count > 0) buf[count-1] = '\0';
184  return ret;
185}
186
187// Portability macros
188#define PRAGMA_INTERFACE
189#define PRAGMA_IMPLEMENTATION
190#define PRAGMA_IMPLEMENTATION_(arg)
191#define VALUE_OBJ_CLASS_SPEC    : public _ValueObj
192
193// Formatting.
194#define FORMAT64_MODIFIER "I64"
195
196#define offset_of(klass,field) offsetof(klass,field)
197