1 /*
   2  * Copyright (c) 1997, 2017, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP
  26 #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP
  27 
  28 #include "jni.h"
  29 
  30 // This file holds compiler-dependent includes,
  31 // globally used constants & types, class (forward)
  32 // declarations and a few frequently used utility functions.
  33 
  34 # include <ctype.h>
  35 # include <string.h>
  36 # include <stdarg.h>
  37 # include <stdlib.h>
  38 # include <stddef.h>// for offsetof
  39 # include <io.h>    // for stream.cpp
  40 # include <float.h> // for _isnan
  41 # include <stdio.h> // for va_list
  42 # include <time.h>
  43 # include <fcntl.h>
  44 # include <limits.h>
  45 // Need this on windows to get the math constants (e.g., M_PI).
  46 #define _USE_MATH_DEFINES
  47 # include <math.h>
  48 
  49 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures
  50 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in
  51 // system header files.  On 32-bit architectures, there is no problem.
  52 // On 64-bit architectures, defining NULL as a 32-bit constant can cause
  53 // problems with varargs functions: C++ integral promotion rules say for
  54 // varargs, we pass the argument 0 as an int.  So, if NULL was passed to a
  55 // varargs function it will remain 32-bits.  Depending on the calling
  56 // convention of the machine, if the argument is passed on the stack then
  57 // only 32-bits of the "NULL" pointer may be initialized to zero.  The
  58 // other 32-bits will be garbage.  If the varargs function is expecting a
  59 // pointer when it extracts the argument, then we may have a problem.
  60 //
  61 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.
  62 #ifdef _LP64
  63 #undef NULL
  64 // 64-bit Windows uses a P64 data model (not LP64, although we define _LP64)
  65 // Since longs are 32-bit we cannot use 0L here.  Use the Visual C++ specific
  66 // 64-bit integer-suffix (LL) instead.
  67 #define NULL 0LL
  68 #else
  69 #ifndef NULL
  70 #define NULL 0
  71 #endif
  72 #endif
  73 
  74 // NULL vs NULL_WORD:
  75 // On Linux NULL is defined as a special type '__null'. Assigning __null to
  76 // integer variable will cause gcc warning. Use NULL_WORD in places where a
  77 // pointer is stored as integer value.
  78 #define NULL_WORD NULL
  79 
  80 // Compiler-specific primitive types
  81 typedef unsigned __int8  uint8_t;
  82 typedef unsigned __int16 uint16_t;
  83 typedef unsigned __int32 uint32_t;
  84 typedef unsigned __int64 uint64_t;
  85 
  86 #ifdef _WIN64
  87 typedef unsigned __int64 uintptr_t;
  88 #else
  89 typedef unsigned int uintptr_t;
  90 #endif
  91 typedef signed   __int8  int8_t;
  92 typedef signed   __int16 int16_t;
  93 typedef signed   __int32 int32_t;
  94 typedef signed   __int64 int64_t;
  95 #ifdef _WIN64
  96 typedef signed   __int64 intptr_t;
  97 typedef signed   __int64 ssize_t;
  98 #else
  99 typedef signed   int intptr_t;
 100 typedef signed   int ssize_t;
 101 #endif
 102 
 103 #ifndef UINTPTR_MAX
 104 #ifdef _WIN64
 105 #define UINTPTR_MAX _UI64_MAX
 106 #else
 107 #define UINTPTR_MAX _UI32_MAX
 108 #endif
 109 #endif
 110 
 111 // Additional Java basic types
 112 
 113 typedef unsigned char    jubyte;
 114 typedef unsigned short   jushort;
 115 typedef unsigned int     juint;
 116 typedef unsigned __int64 julong;
 117 
 118 // Non-standard stdlib-like stuff:
 119 inline int strcasecmp(const char *s1, const char *s2) { return _stricmp(s1,s2); }
 120 inline int strncasecmp(const char *s1, const char *s2, size_t n) {
 121   return _strnicmp(s1,s2,n);
 122 }
 123 
 124 // Checking for nanness
 125 
 126 inline int g_isnan(jfloat  f)                    { return _isnan(f); }
 127 inline int g_isnan(jdouble f)                    { return _isnan(f); }
 128 
 129 // Checking for finiteness
 130 
 131 inline int g_isfinite(jfloat  f)                 { return _finite(f); }
 132 inline int g_isfinite(jdouble f)                 { return _finite(f); }
 133 
 134 // Miscellaneous
 135 
 136 // Visual Studio 2005 deprecates POSIX names - use ISO C++ names instead
 137 #if _MSC_VER >= 1400
 138 #define open _open
 139 #define close _close
 140 #define read  _read
 141 #define write _write
 142 #define lseek _lseek
 143 #define unlink _unlink
 144 #define strdup _strdup
 145 #endif
 146 
 147 #if _MSC_VER < 1800
 148 // Visual Studio 2013 introduced strtoull(); before, one has to use _strtoui64() instead.
 149 #define strtoull _strtoui64
 150 // Visual Studio prior to 2013 had no va_copy, but could safely copy va_list by assignement
 151 #define va_copy(dest, src) dest = src
 152 // Fixes some wrong warnings about 'this' : used in base member initializer list
 153 #pragma warning( disable : 4355 )
 154 #endif
 155 
 156 
 157 #pragma warning( disable : 4100 ) // unreferenced formal parameter
 158 #pragma warning( disable : 4127 ) // conditional expression is constant
 159 #pragma warning( disable : 4514 ) // unreferenced inline function has been removed
 160 #pragma warning( disable : 4244 ) // possible loss of data
 161 #pragma warning( disable : 4512 ) // assignment operator could not be generated
 162 #pragma warning( disable : 4201 ) // nonstandard extension used : nameless struct/union (needed in windows.h)
 163 #pragma warning( disable : 4511 ) // copy constructor could not be generated
 164 #pragma warning( disable : 4291 ) // no matching operator delete found; memory will not be freed if initialization thows an exception
 165 #ifdef CHECK_UNHANDLED_OOPS
 166 #pragma warning( disable : 4521 ) // class has multiple copy ctors of a single type
 167 #pragma warning( disable : 4522 ) // class has multiple assignment operators of a single type
 168 #endif // CHECK_UNHANDLED_OOPS
 169 #if _MSC_VER >= 1400
 170 #pragma warning( disable : 4996 ) // unsafe string functions. Same as define _CRT_SECURE_NO_WARNINGS/_CRT_SECURE_NO_DEPRICATE
 171 #endif
 172 
 173 inline int vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) {
 174   // If number of characters written == count, Windows doesn't write a
 175   // terminating NULL, so we do it ourselves.
 176   int ret = _vsnprintf(buf, count, fmt, argptr);
 177   if (count > 0) buf[count-1] = '\0';
 178   return ret;
 179 }
 180 
 181 // Portability macros
 182 #define PRAGMA_INTERFACE
 183 #define PRAGMA_IMPLEMENTATION
 184 #define PRAGMA_IMPLEMENTATION_(arg)
 185 #define VALUE_OBJ_CLASS_SPEC    : public _ValueObj
 186 
 187 // Formatting.
 188 #define FORMAT64_MODIFIER "I64"
 189 
 190 // Visual Studio doesn't provide inttypes.h so provide appropriate definitions here.
 191 // The 32 bits ones might need I32 but seem to work ok without it.
 192 #define PRId32       "d"
 193 #define PRIu32       "u"
 194 #define PRIx32       "x"
 195 
 196 #define PRId64       "I64d"
 197 #define PRIu64       "I64u"
 198 #define PRIx64       "I64x"
 199 
 200 #ifdef _LP64
 201 #define PRIdPTR       "I64d"
 202 #define PRIuPTR       "I64u"
 203 #define PRIxPTR       "I64x"
 204 #else
 205 #define PRIdPTR       "d"
 206 #define PRIuPTR       "u"
 207 #define PRIxPTR       "x"
 208 #endif
 209 
 210 #define offset_of(klass,field) offsetof(klass,field)
 211 
 212 #ifndef USE_LIBRARY_BASED_TLS_ONLY
 213 #define THREAD_LOCAL_DECL __declspec( thread )
 214 #endif
 215 
 216 // Inlining support
 217 // MSVC has '__declspec(noinline)' but according to the official documentation
 218 // it only applies to member functions. There are reports though which pretend
 219 // that it also works for freestanding functions.
 220 #define NOINLINE     __declspec(noinline)
 221 #define ALWAYSINLINE __forceinline
 222 
 223 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP