author | mgerdin |
Thu, 23 Feb 2012 14:58:35 +0100 | |
changeset 12095 | cc3d6f08a4c4 |
parent 11596 | 3b9802e6c6a2 |
child 12941 | a4a325a315c1 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP |
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#define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP |
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#include "prims/jni.h" |
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// This file holds compiler-dependent includes, |
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// globally used constants & types, class (forward) |
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// declarations and a few frequently used utility functions. |
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# include <ctype.h> |
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# include <string.h> |
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# include <stdarg.h> |
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# include <stdlib.h> |
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# include <stddef.h>// for offsetof |
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# include <io.h> // for stream.cpp |
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# include <float.h> // for _isnan |
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# include <stdio.h> // for va_list |
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# include <time.h> |
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# include <fcntl.h> |
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# include <limits.h> |
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// Need this on windows to get the math constants (e.g., M_PI). |
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#define _USE_MATH_DEFINES |
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# include <math.h> |
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// 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures |
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// When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in |
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// system header files. On 32-bit architectures, there is no problem. |
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// On 64-bit architectures, defining NULL as a 32-bit constant can cause |
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// problems with varargs functions: C++ integral promotion rules say for |
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// varargs, we pass the argument 0 as an int. So, if NULL was passed to a |
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// varargs function it will remain 32-bits. Depending on the calling |
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// convention of the machine, if the argument is passed on the stack then |
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// only 32-bits of the "NULL" pointer may be initialized to zero. The |
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// other 32-bits will be garbage. If the varargs function is expecting a |
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// pointer when it extracts the argument, then we may have a problem. |
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// |
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// Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0. |
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#ifdef _LP64 |
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#undef NULL |
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// 64-bit Windows uses a P64 data model (not LP64, although we define _LP64) |
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// Since longs are 32-bit we cannot use 0L here. Use the Visual C++ specific |
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// 64-bit integer-suffix (i64) instead. |
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#define NULL 0i64 |
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#else |
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#ifndef NULL |
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#define NULL 0 |
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#endif |
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#endif |
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// NULL vs NULL_WORD: |
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// On Linux NULL is defined as a special type '__null'. Assigning __null to |
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// integer variable will cause gcc warning. Use NULL_WORD in places where a |
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// pointer is stored as integer value. |
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#define NULL_WORD NULL |
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// Compiler-specific primitive types |
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typedef unsigned __int8 uint8_t; |
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typedef unsigned __int16 uint16_t; |
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typedef unsigned __int32 uint32_t; |
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typedef unsigned __int64 uint64_t; |
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#ifdef _WIN64 |
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typedef unsigned __int64 uintptr_t; |
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#else |
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typedef unsigned int uintptr_t; |
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#endif |
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typedef signed __int8 int8_t; |
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typedef signed __int16 int16_t; |
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typedef signed __int32 int32_t; |
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typedef signed __int64 int64_t; |
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#ifdef _WIN64 |
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typedef signed __int64 intptr_t; |
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typedef signed __int64 ssize_t; |
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#else |
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typedef signed int intptr_t; |
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typedef signed int ssize_t; |
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#endif |
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#ifndef UINTPTR_MAX |
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#ifdef _WIN64 |
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#define UINTPTR_MAX _UI64_MAX |
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#else |
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#define UINTPTR_MAX _UI32_MAX |
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#endif |
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#endif |
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//---------------------------------------------------------------------------------------------------- |
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// Additional Java basic types |
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typedef unsigned char jubyte; |
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typedef unsigned short jushort; |
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typedef unsigned int juint; |
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typedef unsigned __int64 julong; |
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//---------------------------------------------------------------------------------------------------- |
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// Special (possibly not-portable) casts |
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// Cast floats into same-size integers and vice-versa w/o changing bit-pattern |
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inline jint jint_cast (jfloat x) { return *(jint* )&x; } |
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inline jlong jlong_cast (jdouble x) { return *(jlong* )&x; } |
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inline jfloat jfloat_cast (jint x) { return *(jfloat* )&x; } |
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inline jdouble jdouble_cast(jlong x) { return *(jdouble*)&x; } |
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//---------------------------------------------------------------------------------------------------- |
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// Non-standard stdlib-like stuff: |
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inline int strcasecmp(const char *s1, const char *s2) { return _stricmp(s1,s2); } |
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inline int strncasecmp(const char *s1, const char *s2, size_t n) { |
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return _strnicmp(s1,s2,n); |
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} |
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//---------------------------------------------------------------------------------------------------- |
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// Debugging |
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#if _WIN64 |
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extern "C" void breakpoint(); |
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#define BREAKPOINT ::breakpoint() |
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#else |
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#define BREAKPOINT __asm { int 3 } |
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#endif |
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//---------------------------------------------------------------------------------------------------- |
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// Checking for nanness |
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inline int g_isnan(jfloat f) { return _isnan(f); } |
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inline int g_isnan(jdouble f) { return _isnan(f); } |
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//---------------------------------------------------------------------------------------------------- |
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// Checking for finiteness |
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inline int g_isfinite(jfloat f) { return _finite(f); } |
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inline int g_isfinite(jdouble f) { return _finite(f); } |
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//---------------------------------------------------------------------------------------------------- |
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// Constant for jlong (specifying an long long constant is C++ compiler specific) |
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// Build a 64bit integer constant on with Visual C++ |
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#define CONST64(x) (x ## i64) |
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#define UCONST64(x) ((uint64_t)CONST64(x)) |
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const jlong min_jlong = CONST64(0x8000000000000000); |
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const jlong max_jlong = CONST64(0x7fffffffffffffff); |
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//---------------------------------------------------------------------------------------------------- |
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// Miscellaneous |
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// Visual Studio 2005 deprecates POSIX names - use ISO C++ names instead |
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#if _MSC_VER >= 1400 |
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#define open _open |
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#define close _close |
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#define read _read |
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#define write _write |
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#define lseek _lseek |
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#define unlink _unlink |
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#define strdup _strdup |
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#endif |
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#pragma warning( disable : 4100 ) // unreferenced formal parameter |
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#pragma warning( disable : 4127 ) // conditional expression is constant |
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#pragma warning( disable : 4514 ) // unreferenced inline function has been removed |
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#pragma warning( disable : 4244 ) // possible loss of data |
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#pragma warning( disable : 4512 ) // assignment operator could not be generated |
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#pragma warning( disable : 4201 ) // nonstandard extension used : nameless struct/union (needed in windows.h) |
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#pragma warning( disable : 4511 ) // copy constructor could not be generated |
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#pragma warning( disable : 4291 ) // no matching operator delete found; memory will not be freed if initialization thows an exception |
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#if _MSC_VER >= 1400 |
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#pragma warning( disable : 4996 ) // unsafe string functions. Same as define _CRT_SECURE_NO_WARNINGS/_CRT_SECURE_NO_DEPRICATE |
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#endif |
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inline int vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) { |
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// If number of characters written == count, Windows doesn't write a |
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// terminating NULL, so we do it ourselves. |
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int ret = _vsnprintf(buf, count, fmt, argptr); |
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if (count > 0) buf[count-1] = '\0'; |
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return ret; |
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} |
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// Portability macros |
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#define PRAGMA_INTERFACE |
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#define PRAGMA_IMPLEMENTATION |
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#define PRAGMA_IMPLEMENTATION_(arg) |
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#define VALUE_OBJ_CLASS_SPEC : public _ValueObj |
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// Formatting. |
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#define FORMAT64_MODIFIER "I64" |
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// Visual Studio doesn't provide inttypes.h so provide appropriate definitions here. |
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// The 32 bits ones might need I32 but seem to work ok without it. |
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#define PRId32 "d" |
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#define PRIu32 "u" |
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#define PRIx32 "x" |
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#define PRId64 "I64d" |
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#define PRIu64 "I64u" |
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#define PRIx64 "I64x" |
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#define PRIdPTR "d" |
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#define PRIuPTR "u" |
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#define PRIxPTR "x" |
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#define offset_of(klass,field) offsetof(klass,field) |
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#endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP |