/* * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP #include "prims/jni.h" // This file holds compiler-dependent includes, // globally used constants & types, class (forward) // declarations and a few frequently used utility functions. # include # include # include # include # include // for offsetof # include // for stream.cpp # include // for _isnan # include // for va_list # include # include # include // Need this on windows to get the math constants (e.g., M_PI). #define _USE_MATH_DEFINES # include // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in // system header files. On 32-bit architectures, there is no problem. // On 64-bit architectures, defining NULL as a 32-bit constant can cause // problems with varargs functions: C++ integral promotion rules say for // varargs, we pass the argument 0 as an int. So, if NULL was passed to a // varargs function it will remain 32-bits. Depending on the calling // convention of the machine, if the argument is passed on the stack then // only 32-bits of the "NULL" pointer may be initialized to zero. The // other 32-bits will be garbage. If the varargs function is expecting a // pointer when it extracts the argument, then we may have a problem. // // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0. #ifdef _LP64 #undef NULL // 64-bit Windows uses a P64 data model (not LP64, although we define _LP64) // Since longs are 32-bit we cannot use 0L here. Use the Visual C++ specific // 64-bit integer-suffix (i64) instead. #define NULL 0i64 #else #ifndef NULL #define NULL 0 #endif #endif // NULL vs NULL_WORD: // On Linux NULL is defined as a special type '__null'. Assigning __null to // integer variable will cause gcc warning. Use NULL_WORD in places where a // pointer is stored as integer value. #define NULL_WORD NULL // Compiler-specific primitive types typedef unsigned __int8 uint8_t; typedef unsigned __int16 uint16_t; typedef unsigned __int32 uint32_t; typedef unsigned __int64 uint64_t; #ifdef _WIN64 typedef unsigned __int64 uintptr_t; #else typedef unsigned int uintptr_t; #endif typedef signed __int8 int8_t; typedef signed __int16 int16_t; typedef signed __int32 int32_t; typedef signed __int64 int64_t; #ifdef _WIN64 typedef signed __int64 intptr_t; typedef signed __int64 ssize_t; #else typedef signed int intptr_t; typedef signed int ssize_t; #endif #ifndef UINTPTR_MAX #ifdef _WIN64 #define UINTPTR_MAX _UI64_MAX #else #define UINTPTR_MAX _UI32_MAX #endif #endif //---------------------------------------------------------------------------------------------------- // Additional Java basic types typedef unsigned char jubyte; typedef unsigned short jushort; typedef unsigned int juint; typedef unsigned __int64 julong; //---------------------------------------------------------------------------------------------------- // Special (possibly not-portable) casts // Cast floats into same-size integers and vice-versa w/o changing bit-pattern inline jint jint_cast (jfloat x) { return *(jint* )&x; } inline jlong jlong_cast (jdouble x) { return *(jlong* )&x; } inline jfloat jfloat_cast (jint x) { return *(jfloat* )&x; } inline jdouble jdouble_cast(jlong x) { return *(jdouble*)&x; } //---------------------------------------------------------------------------------------------------- // Non-standard stdlib-like stuff: inline int strcasecmp(const char *s1, const char *s2) { return _stricmp(s1,s2); } inline int strncasecmp(const char *s1, const char *s2, size_t n) { return _strnicmp(s1,s2,n); } //---------------------------------------------------------------------------------------------------- // Debugging #if _WIN64 extern "C" void breakpoint(); #define BREAKPOINT ::breakpoint() #else #define BREAKPOINT __asm { int 3 } #endif //---------------------------------------------------------------------------------------------------- // Checking for nanness inline int g_isnan(jfloat f) { return _isnan(f); } inline int g_isnan(jdouble f) { return _isnan(f); } //---------------------------------------------------------------------------------------------------- // Checking for finiteness inline int g_isfinite(jfloat f) { return _finite(f); } inline int g_isfinite(jdouble f) { return _finite(f); } //---------------------------------------------------------------------------------------------------- // Constant for jlong (specifying an long long constant is C++ compiler specific) // Build a 64bit integer constant on with Visual C++ #define CONST64(x) (x ## i64) #define UCONST64(x) ((uint64_t)CONST64(x)) const jlong min_jlong = CONST64(0x8000000000000000); const jlong max_jlong = CONST64(0x7fffffffffffffff); //---------------------------------------------------------------------------------------------------- // Miscellaneous // Visual Studio 2005 deprecates POSIX names - use ISO C++ names instead #if _MSC_VER >= 1400 #define open _open #define close _close #define read _read #define write _write #define lseek _lseek #define unlink _unlink #define strdup _strdup #endif #pragma warning( disable : 4100 ) // unreferenced formal parameter #pragma warning( disable : 4127 ) // conditional expression is constant #pragma warning( disable : 4514 ) // unreferenced inline function has been removed #pragma warning( disable : 4244 ) // possible loss of data #pragma warning( disable : 4512 ) // assignment operator could not be generated #pragma warning( disable : 4201 ) // nonstandard extension used : nameless struct/union (needed in windows.h) #pragma warning( disable : 4511 ) // copy constructor could not be generated #pragma warning( disable : 4291 ) // no matching operator delete found; memory will not be freed if initialization thows an exception #if _MSC_VER >= 1400 #pragma warning( disable : 4996 ) // unsafe string functions. Same as define _CRT_SECURE_NO_WARNINGS/_CRT_SECURE_NO_DEPRICATE #endif inline int vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) { // If number of characters written == count, Windows doesn't write a // terminating NULL, so we do it ourselves. int ret = _vsnprintf(buf, count, fmt, argptr); if (count > 0) buf[count-1] = '\0'; return ret; } // Portability macros #define PRAGMA_INTERFACE #define PRAGMA_IMPLEMENTATION #define PRAGMA_IMPLEMENTATION_(arg) #define VALUE_OBJ_CLASS_SPEC : public _ValueObj // Formatting. #define FORMAT64_MODIFIER "I64" // Visual Studio doesn't provide inttypes.h so provide appropriate definitions here. // The 32 bits ones might need I32 but seem to work ok without it. #define PRId32 "d" #define PRIu32 "u" #define PRIx32 "x" #define PRId64 "I64d" #define PRIu64 "I64u" #define PRIx64 "I64x" #ifdef _LP64 #define PRIdPTR "I64d" #define PRIuPTR "I64u" #define PRIxPTR "I64x" #else #define PRIdPTR "d" #define PRIuPTR "u" #define PRIxPTR "x" #endif #define offset_of(klass,field) offsetof(klass,field) #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP