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 "prims/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 81typedef unsigned __int8 uint8_t; 82typedef unsigned __int16 uint16_t; 83typedef unsigned __int32 uint32_t; 84typedef unsigned __int64 uint64_t; 85 86#ifdef _WIN64 87typedef unsigned __int64 uintptr_t; 88#else 89typedef unsigned int uintptr_t; 90#endif 91typedef signed __int8 int8_t; 92typedef signed __int16 int16_t; 93typedef signed __int32 int32_t; 94typedef signed __int64 int64_t; 95#ifdef _WIN64 96typedef signed __int64 intptr_t; 97typedef signed __int64 ssize_t; 98#else 99typedef signed int intptr_t; 100typedef 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 113typedef unsigned char jubyte; 114typedef unsigned short jushort; 115typedef unsigned int juint; 116typedef unsigned __int64 julong; 117 118// Non-standard stdlib-like stuff: 119inline int strcasecmp(const char *s1, const char *s2) { return _stricmp(s1,s2); } 120inline int strncasecmp(const char *s1, const char *s2, size_t n) { 121 return _strnicmp(s1,s2,n); 122} 123 124// Checking for nanness 125 126inline int g_isnan(jfloat f) { return _isnan(f); } 127inline int g_isnan(jdouble f) { return _isnan(f); } 128 129// Checking for finiteness 130 131inline int g_isfinite(jfloat f) { return _finite(f); } 132inline 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 173inline 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 224