author | hseigel |
Thu, 17 Jan 2013 10:25:16 -0500 | |
changeset 15228 | e92acc84ade3 |
parent 14579 | 7f6ce6e3dd80 |
child 16689 | efce070b8d42 |
child 16670 | 4af09aff4237 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 1997, 2013, 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_HPP |
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#define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP |
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#ifndef __STDC_FORMAT_MACROS |
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#define __STDC_FORMAT_MACROS |
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#endif |
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#ifdef TARGET_COMPILER_gcc |
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# include "utilities/globalDefinitions_gcc.hpp" |
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#endif |
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#ifdef TARGET_COMPILER_visCPP |
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# include "utilities/globalDefinitions_visCPP.hpp" |
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#endif |
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#ifdef TARGET_COMPILER_sparcWorks |
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# include "utilities/globalDefinitions_sparcWorks.hpp" |
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#endif |
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#include "utilities/macros.hpp" |
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// This file holds all globally used constants & types, class (forward) |
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// declarations and a few frequently used utility functions. |
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//---------------------------------------------------------------------------------------------------- |
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// Constants |
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const int LogBytesPerShort = 1; |
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const int LogBytesPerInt = 2; |
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#ifdef _LP64 |
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const int LogBytesPerWord = 3; |
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#else |
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const int LogBytesPerWord = 2; |
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#endif |
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const int LogBytesPerLong = 3; |
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const int BytesPerShort = 1 << LogBytesPerShort; |
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const int BytesPerInt = 1 << LogBytesPerInt; |
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const int BytesPerWord = 1 << LogBytesPerWord; |
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const int BytesPerLong = 1 << LogBytesPerLong; |
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const int LogBitsPerByte = 3; |
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const int LogBitsPerShort = LogBitsPerByte + LogBytesPerShort; |
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const int LogBitsPerInt = LogBitsPerByte + LogBytesPerInt; |
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const int LogBitsPerWord = LogBitsPerByte + LogBytesPerWord; |
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const int LogBitsPerLong = LogBitsPerByte + LogBytesPerLong; |
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const int BitsPerByte = 1 << LogBitsPerByte; |
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const int BitsPerShort = 1 << LogBitsPerShort; |
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const int BitsPerInt = 1 << LogBitsPerInt; |
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const int BitsPerWord = 1 << LogBitsPerWord; |
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const int BitsPerLong = 1 << LogBitsPerLong; |
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const int WordAlignmentMask = (1 << LogBytesPerWord) - 1; |
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const int LongAlignmentMask = (1 << LogBytesPerLong) - 1; |
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const int WordsPerLong = 2; // Number of stack entries for longs |
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const int oopSize = sizeof(char*); // Full-width oop |
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extern int heapOopSize; // Oop within a java object |
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const int wordSize = sizeof(char*); |
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const int longSize = sizeof(jlong); |
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const int jintSize = sizeof(jint); |
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const int size_tSize = sizeof(size_t); |
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const int BytesPerOop = BytesPerWord; // Full-width oop |
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extern int LogBytesPerHeapOop; // Oop within a java object |
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extern int LogBitsPerHeapOop; |
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extern int BytesPerHeapOop; |
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extern int BitsPerHeapOop; |
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// Oop encoding heap max |
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extern uint64_t OopEncodingHeapMax; |
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const int BitsPerJavaInteger = 32; |
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const int BitsPerJavaLong = 64; |
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const int BitsPerSize_t = size_tSize * BitsPerByte; |
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// Size of a char[] needed to represent a jint as a string in decimal. |
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const int jintAsStringSize = 12; |
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// In fact this should be |
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// log2_intptr(sizeof(class JavaThread)) - log2_intptr(64); |
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// see os::set_memory_serialize_page() |
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#ifdef _LP64 |
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const int SerializePageShiftCount = 4; |
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#else |
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const int SerializePageShiftCount = 3; |
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#endif |
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// An opaque struct of heap-word width, so that HeapWord* can be a generic |
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// pointer into the heap. We require that object sizes be measured in |
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// units of heap words, so that that |
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// HeapWord* hw; |
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// hw += oop(hw)->foo(); |
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// works, where foo is a method (like size or scavenge) that returns the |
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// object size. |
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class HeapWord { |
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friend class VMStructs; |
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private: |
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char* i; |
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#ifndef PRODUCT |
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public: |
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char* value() { return i; } |
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#endif |
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}; |
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// Analogous opaque struct for metadata allocated from |
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// metaspaces. |
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class MetaWord { |
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friend class VMStructs; |
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private: |
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char* i; |
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}; |
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// HeapWordSize must be 2^LogHeapWordSize. |
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const int HeapWordSize = sizeof(HeapWord); |
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#ifdef _LP64 |
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const int LogHeapWordSize = 3; |
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#else |
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const int LogHeapWordSize = 2; |
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#endif |
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const int HeapWordsPerLong = BytesPerLong / HeapWordSize; |
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const int LogHeapWordsPerLong = LogBytesPerLong - LogHeapWordSize; |
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// The larger HeapWordSize for 64bit requires larger heaps |
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// for the same application running in 64bit. See bug 4967770. |
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// The minimum alignment to a heap word size is done. Other |
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// parts of the memory system may required additional alignment |
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// and are responsible for those alignments. |
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#ifdef _LP64 |
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#define ScaleForWordSize(x) align_size_down_((x) * 13 / 10, HeapWordSize) |
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#else |
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#define ScaleForWordSize(x) (x) |
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#endif |
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// The minimum number of native machine words necessary to contain "byte_size" |
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// bytes. |
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inline size_t heap_word_size(size_t byte_size) { |
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return (byte_size + (HeapWordSize-1)) >> LogHeapWordSize; |
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} |
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const size_t K = 1024; |
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const size_t M = K*K; |
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const size_t G = M*K; |
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const size_t HWperKB = K / sizeof(HeapWord); |
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const jint min_jint = (jint)1 << (sizeof(jint)*BitsPerByte-1); // 0x80000000 == smallest jint |
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const jint max_jint = (juint)min_jint - 1; // 0x7FFFFFFF == largest jint |
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// Constants for converting from a base unit to milli-base units. For |
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// example from seconds to milliseconds and microseconds |
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const int MILLIUNITS = 1000; // milli units per base unit |
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const int MICROUNITS = 1000000; // micro units per base unit |
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const int NANOUNITS = 1000000000; // nano units per base unit |
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const jlong NANOSECS_PER_SEC = CONST64(1000000000); |
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const jint NANOSECS_PER_MILLISEC = 1000000; |
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inline const char* proper_unit_for_byte_size(size_t s) { |
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#ifdef _LP64 |
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if (s >= 10*G) { |
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return "G"; |
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} |
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#endif |
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if (s >= 10*M) { |
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return "M"; |
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} else if (s >= 10*K) { |
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return "K"; |
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} else { |
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return "B"; |
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} |
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} |
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template <class T> |
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inline T byte_size_in_proper_unit(T s) { |
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#ifdef _LP64 |
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if (s >= 10*G) { |
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return (T)(s/G); |
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} |
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#endif |
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if (s >= 10*M) { |
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return (T)(s/M); |
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} else if (s >= 10*K) { |
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return (T)(s/K); |
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} else { |
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return s; |
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} |
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} |
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//---------------------------------------------------------------------------------------------------- |
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// VM type definitions |
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218 |
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219 |
// intx and uintx are the 'extended' int and 'extended' unsigned int types; |
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// they are 32bit wide on a 32-bit platform, and 64bit wide on a 64bit platform. |
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typedef intptr_t intx; |
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typedef uintptr_t uintx; |
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224 |
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225 |
const intx min_intx = (intx)1 << (sizeof(intx)*BitsPerByte-1); |
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226 |
const intx max_intx = (uintx)min_intx - 1; |
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227 |
const uintx max_uintx = (uintx)-1; |
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228 |
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// Table of values: |
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// sizeof intx 4 8 |
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231 |
// min_intx 0x80000000 0x8000000000000000 |
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// max_intx 0x7FFFFFFF 0x7FFFFFFFFFFFFFFF |
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// max_uintx 0xFFFFFFFF 0xFFFFFFFFFFFFFFFF |
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typedef unsigned int uint; NEEDS_CLEANUP |
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//---------------------------------------------------------------------------------------------------- |
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// Java type definitions |
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240 |
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// All kinds of 'plain' byte addresses |
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typedef signed char s_char; |
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typedef unsigned char u_char; |
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typedef u_char* address; |
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typedef uintptr_t address_word; // unsigned integer which will hold a pointer |
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// except for some implementations of a C++ |
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// linkage pointer to function. Should never |
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// need one of those to be placed in this |
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// type anyway. |
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250 |
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// Utility functions to "portably" (?) bit twiddle pointers |
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// Where portable means keep ANSI C++ compilers quiet |
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253 |
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inline address set_address_bits(address x, int m) { return address(intptr_t(x) | m); } |
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inline address clear_address_bits(address x, int m) { return address(intptr_t(x) & ~m); } |
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256 |
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257 |
// Utility functions to "portably" make cast to/from function pointers. |
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258 |
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259 |
inline address_word mask_address_bits(address x, int m) { return address_word(x) & m; } |
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inline address_word castable_address(address x) { return address_word(x) ; } |
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inline address_word castable_address(void* x) { return address_word(x) ; } |
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// Pointer subtraction. |
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// The idea here is to avoid ptrdiff_t, which is signed and so doesn't have |
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// the range we might need to find differences from one end of the heap |
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// to the other. |
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// A typical use might be: |
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// if (pointer_delta(end(), top()) >= size) { |
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// // enough room for an object of size |
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// ... |
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271 |
// and then additions like |
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// ... top() + size ... |
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// are safe because we know that top() is at least size below end(). |
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274 |
inline size_t pointer_delta(const void* left, |
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275 |
const void* right, |
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276 |
size_t element_size) { |
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277 |
return (((uintptr_t) left) - ((uintptr_t) right)) / element_size; |
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278 |
} |
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279 |
// A version specialized for HeapWord*'s. |
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280 |
inline size_t pointer_delta(const HeapWord* left, const HeapWord* right) { |
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281 |
return pointer_delta(left, right, sizeof(HeapWord)); |
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282 |
} |
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// A version specialized for MetaWord*'s. |
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inline size_t pointer_delta(const MetaWord* left, const MetaWord* right) { |
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return pointer_delta(left, right, sizeof(MetaWord)); |
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|
286 |
} |
1 | 287 |
|
288 |
// |
|
289 |
// ANSI C++ does not allow casting from one pointer type to a function pointer |
|
290 |
// directly without at best a warning. This macro accomplishes it silently |
|
291 |
// In every case that is present at this point the value be cast is a pointer |
|
292 |
// to a C linkage function. In somecase the type used for the cast reflects |
|
293 |
// that linkage and a picky compiler would not complain. In other cases because |
|
294 |
// there is no convenient place to place a typedef with extern C linkage (i.e |
|
295 |
// a platform dependent header file) it doesn't. At this point no compiler seems |
|
296 |
// picky enough to catch these instances (which are few). It is possible that |
|
297 |
// using templates could fix these for all cases. This use of templates is likely |
|
298 |
// so far from the middle of the road that it is likely to be problematic in |
|
299 |
// many C++ compilers. |
|
300 |
// |
|
301 |
#define CAST_TO_FN_PTR(func_type, value) ((func_type)(castable_address(value))) |
|
302 |
#define CAST_FROM_FN_PTR(new_type, func_ptr) ((new_type)((address_word)(func_ptr))) |
|
303 |
||
304 |
// Unsigned byte types for os and stream.hpp |
|
305 |
||
306 |
// Unsigned one, two, four and eigth byte quantities used for describing |
|
307 |
// the .class file format. See JVM book chapter 4. |
|
308 |
||
309 |
typedef jubyte u1; |
|
310 |
typedef jushort u2; |
|
311 |
typedef juint u4; |
|
312 |
typedef julong u8; |
|
313 |
||
314 |
const jubyte max_jubyte = (jubyte)-1; // 0xFF largest jubyte |
|
315 |
const jushort max_jushort = (jushort)-1; // 0xFFFF largest jushort |
|
316 |
const juint max_juint = (juint)-1; // 0xFFFFFFFF largest juint |
|
317 |
const julong max_julong = (julong)-1; // 0xFF....FF largest julong |
|
318 |
||
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typedef jbyte s1; |
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320 |
typedef jshort s2; |
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321 |
typedef jint s4; |
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|
322 |
typedef jlong s8; |
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323 |
|
1 | 324 |
//---------------------------------------------------------------------------------------------------- |
325 |
// JVM spec restrictions |
|
326 |
||
327 |
const int max_method_code_size = 64*K - 1; // JVM spec, 2nd ed. section 4.8.1 (p.134) |
|
328 |
||
329 |
||
330 |
//---------------------------------------------------------------------------------------------------- |
|
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// Minimum StringTableSize value |
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332 |
|
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333 |
const int defaultStringTableSize=1009; |
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|
334 |
|
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|
335 |
|
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|
336 |
//---------------------------------------------------------------------------------------------------- |
1 | 337 |
// HotSwap - for JVMTI aka Class File Replacement and PopFrame |
338 |
// |
|
339 |
// Determines whether on-the-fly class replacement and frame popping are enabled. |
|
340 |
||
341 |
#define HOTSWAP |
|
342 |
||
343 |
//---------------------------------------------------------------------------------------------------- |
|
344 |
// Object alignment, in units of HeapWords. |
|
345 |
// |
|
346 |
// Minimum is max(BytesPerLong, BytesPerDouble, BytesPerOop) / HeapWordSize, so jlong, jdouble and |
|
347 |
// reference fields can be naturally aligned. |
|
348 |
||
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349 |
extern int MinObjAlignment; |
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350 |
extern int MinObjAlignmentInBytes; |
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351 |
extern int MinObjAlignmentInBytesMask; |
1 | 352 |
|
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353 |
extern int LogMinObjAlignment; |
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354 |
extern int LogMinObjAlignmentInBytes; |
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355 |
|
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356 |
const int LogKlassAlignmentInBytes = 3; |
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357 |
const int LogKlassAlignment = LogKlassAlignmentInBytes - LogHeapWordSize; |
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358 |
const int KlassAlignmentInBytes = 1 << LogKlassAlignmentInBytes; |
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359 |
const int KlassAlignment = KlassAlignmentInBytes / HeapWordSize; |
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|
360 |
|
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|
361 |
// Klass encoding metaspace max size |
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|
362 |
const uint64_t KlassEncodingMetaspaceMax = (uint64_t(max_juint) + 1) << LogKlassAlignmentInBytes; |
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363 |
|
1 | 364 |
// Machine dependent stuff |
365 |
||
7397 | 366 |
#ifdef TARGET_ARCH_x86 |
367 |
# include "globalDefinitions_x86.hpp" |
|
368 |
#endif |
|
369 |
#ifdef TARGET_ARCH_sparc |
|
370 |
# include "globalDefinitions_sparc.hpp" |
|
371 |
#endif |
|
372 |
#ifdef TARGET_ARCH_zero |
|
373 |
# include "globalDefinitions_zero.hpp" |
|
374 |
#endif |
|
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375 |
#ifdef TARGET_ARCH_arm |
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|
376 |
# include "globalDefinitions_arm.hpp" |
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|
377 |
#endif |
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|
378 |
#ifdef TARGET_ARCH_ppc |
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|
379 |
# include "globalDefinitions_ppc.hpp" |
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|
380 |
#endif |
7397 | 381 |
|
1 | 382 |
|
383 |
// The byte alignment to be used by Arena::Amalloc. See bugid 4169348. |
|
384 |
// Note: this value must be a power of 2 |
|
385 |
||
386 |
#define ARENA_AMALLOC_ALIGNMENT (2*BytesPerWord) |
|
387 |
||
388 |
// Signed variants of alignment helpers. There are two versions of each, a macro |
|
389 |
// for use in places like enum definitions that require compile-time constant |
|
390 |
// expressions and a function for all other places so as to get type checking. |
|
391 |
||
392 |
#define align_size_up_(size, alignment) (((size) + ((alignment) - 1)) & ~((alignment) - 1)) |
|
393 |
||
394 |
inline intptr_t align_size_up(intptr_t size, intptr_t alignment) { |
|
395 |
return align_size_up_(size, alignment); |
|
396 |
} |
|
397 |
||
398 |
#define align_size_down_(size, alignment) ((size) & ~((alignment) - 1)) |
|
399 |
||
400 |
inline intptr_t align_size_down(intptr_t size, intptr_t alignment) { |
|
401 |
return align_size_down_(size, alignment); |
|
402 |
} |
|
403 |
||
404 |
// Align objects by rounding up their size, in HeapWord units. |
|
405 |
||
406 |
#define align_object_size_(size) align_size_up_(size, MinObjAlignment) |
|
407 |
||
408 |
inline intptr_t align_object_size(intptr_t size) { |
|
409 |
return align_size_up(size, MinObjAlignment); |
|
410 |
} |
|
411 |
||
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|
412 |
inline bool is_object_aligned(intptr_t addr) { |
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|
413 |
return addr == align_object_size(addr); |
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|
414 |
} |
1 | 415 |
|
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|
416 |
// Pad out certain offsets to jlong alignment, in HeapWord units. |
1 | 417 |
|
418 |
inline intptr_t align_object_offset(intptr_t offset) { |
|
419 |
return align_size_up(offset, HeapWordsPerLong); |
|
420 |
} |
|
421 |
||
6067 | 422 |
// The expected size in bytes of a cache line, used to pad data structures. |
423 |
#define DEFAULT_CACHE_LINE_SIZE 64 |
|
424 |
||
425 |
// Bytes needed to pad type to avoid cache-line sharing; alignment should be the |
|
426 |
// expected cache line size (a power of two). The first addend avoids sharing |
|
427 |
// when the start address is not a multiple of alignment; the second maintains |
|
428 |
// alignment of starting addresses that happen to be a multiple. |
|
429 |
#define PADDING_SIZE(type, alignment) \ |
|
430 |
((alignment) + align_size_up_(sizeof(type), alignment)) |
|
431 |
||
432 |
// Templates to create a subclass padded to avoid cache line sharing. These are |
|
433 |
// effective only when applied to derived-most (leaf) classes. |
|
434 |
||
435 |
// When no args are passed to the base ctor. |
|
436 |
template <class T, size_t alignment = DEFAULT_CACHE_LINE_SIZE> |
|
437 |
class Padded: public T { |
|
438 |
private: |
|
439 |
char _pad_buf_[PADDING_SIZE(T, alignment)]; |
|
440 |
}; |
|
441 |
||
442 |
// When either 0 or 1 args may be passed to the base ctor. |
|
443 |
template <class T, typename Arg1T, size_t alignment = DEFAULT_CACHE_LINE_SIZE> |
|
444 |
class Padded01: public T { |
|
445 |
public: |
|
446 |
Padded01(): T() { } |
|
447 |
Padded01(Arg1T arg1): T(arg1) { } |
|
448 |
private: |
|
449 |
char _pad_buf_[PADDING_SIZE(T, alignment)]; |
|
450 |
}; |
|
1 | 451 |
|
452 |
//---------------------------------------------------------------------------------------------------- |
|
453 |
// Utility macros for compilers |
|
454 |
// used to silence compiler warnings |
|
455 |
||
456 |
#define Unused_Variable(var) var |
|
457 |
||
458 |
||
459 |
//---------------------------------------------------------------------------------------------------- |
|
460 |
// Miscellaneous |
|
461 |
||
462 |
// 6302670 Eliminate Hotspot __fabsf dependency |
|
463 |
// All fabs() callers should call this function instead, which will implicitly |
|
464 |
// convert the operand to double, avoiding a dependency on __fabsf which |
|
465 |
// doesn't exist in early versions of Solaris 8. |
|
466 |
inline double fabsd(double value) { |
|
467 |
return fabs(value); |
|
468 |
} |
|
469 |
||
470 |
inline jint low (jlong value) { return jint(value); } |
|
471 |
inline jint high(jlong value) { return jint(value >> 32); } |
|
472 |
||
473 |
// the fancy casts are a hopefully portable way |
|
474 |
// to do unsigned 32 to 64 bit type conversion |
|
475 |
inline void set_low (jlong* value, jint low ) { *value &= (jlong)0xffffffff << 32; |
|
476 |
*value |= (jlong)(julong)(juint)low; } |
|
477 |
||
478 |
inline void set_high(jlong* value, jint high) { *value &= (jlong)(julong)(juint)0xffffffff; |
|
479 |
*value |= (jlong)high << 32; } |
|
480 |
||
481 |
inline jlong jlong_from(jint h, jint l) { |
|
482 |
jlong result = 0; // initialization to avoid warning |
|
483 |
set_high(&result, h); |
|
484 |
set_low(&result, l); |
|
485 |
return result; |
|
486 |
} |
|
487 |
||
488 |
union jlong_accessor { |
|
489 |
jint words[2]; |
|
490 |
jlong long_value; |
|
491 |
}; |
|
492 |
||
360
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|
493 |
void basic_types_init(); // cannot define here; uses assert |
1 | 494 |
|
495 |
||
496 |
// NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java |
|
497 |
enum BasicType { |
|
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|
498 |
T_BOOLEAN = 4, |
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|
499 |
T_CHAR = 5, |
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|
500 |
T_FLOAT = 6, |
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|
501 |
T_DOUBLE = 7, |
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|
502 |
T_BYTE = 8, |
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|
503 |
T_SHORT = 9, |
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|
504 |
T_INT = 10, |
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|
505 |
T_LONG = 11, |
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|
506 |
T_OBJECT = 12, |
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|
507 |
T_ARRAY = 13, |
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|
508 |
T_VOID = 14, |
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|
509 |
T_ADDRESS = 15, |
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|
510 |
T_NARROWOOP = 16, |
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|
511 |
T_METADATA = 17, |
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|
512 |
T_NARROWKLASS = 18, |
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|
513 |
T_CONFLICT = 19, // for stack value type with conflicting contents |
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|
514 |
T_ILLEGAL = 99 |
1 | 515 |
}; |
516 |
||
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|
517 |
inline bool is_java_primitive(BasicType t) { |
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|
518 |
return T_BOOLEAN <= t && t <= T_LONG; |
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|
519 |
} |
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|
520 |
|
2534 | 521 |
inline bool is_subword_type(BasicType t) { |
522 |
// these guys are processed exactly like T_INT in calling sequences: |
|
523 |
return (t == T_BOOLEAN || t == T_CHAR || t == T_BYTE || t == T_SHORT); |
|
524 |
} |
|
525 |
||
526 |
inline bool is_signed_subword_type(BasicType t) { |
|
527 |
return (t == T_BYTE || t == T_SHORT); |
|
528 |
} |
|
529 |
||
1 | 530 |
// Convert a char from a classfile signature to a BasicType |
531 |
inline BasicType char2type(char c) { |
|
532 |
switch( c ) { |
|
533 |
case 'B': return T_BYTE; |
|
534 |
case 'C': return T_CHAR; |
|
535 |
case 'D': return T_DOUBLE; |
|
536 |
case 'F': return T_FLOAT; |
|
537 |
case 'I': return T_INT; |
|
538 |
case 'J': return T_LONG; |
|
539 |
case 'S': return T_SHORT; |
|
540 |
case 'Z': return T_BOOLEAN; |
|
541 |
case 'V': return T_VOID; |
|
542 |
case 'L': return T_OBJECT; |
|
543 |
case '[': return T_ARRAY; |
|
544 |
} |
|
545 |
return T_ILLEGAL; |
|
546 |
} |
|
547 |
||
548 |
extern char type2char_tab[T_CONFLICT+1]; // Map a BasicType to a jchar |
|
549 |
inline char type2char(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2char_tab[t] : 0; } |
|
550 |
extern int type2size[T_CONFLICT+1]; // Map BasicType to result stack elements |
|
551 |
extern const char* type2name_tab[T_CONFLICT+1]; // Map a BasicType to a jchar |
|
552 |
inline const char* type2name(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2name_tab[t] : NULL; } |
|
553 |
extern BasicType name2type(const char* name); |
|
554 |
||
555 |
// Auxilary math routines |
|
556 |
// least common multiple |
|
557 |
extern size_t lcm(size_t a, size_t b); |
|
558 |
||
559 |
||
560 |
// NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java |
|
561 |
enum BasicTypeSize { |
|
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|
562 |
T_BOOLEAN_size = 1, |
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|
563 |
T_CHAR_size = 1, |
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|
564 |
T_FLOAT_size = 1, |
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|
565 |
T_DOUBLE_size = 2, |
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|
566 |
T_BYTE_size = 1, |
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|
567 |
T_SHORT_size = 1, |
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|
568 |
T_INT_size = 1, |
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|
569 |
T_LONG_size = 2, |
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|
570 |
T_OBJECT_size = 1, |
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|
571 |
T_ARRAY_size = 1, |
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|
572 |
T_NARROWOOP_size = 1, |
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|
573 |
T_NARROWKLASS_size = 1, |
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|
574 |
T_VOID_size = 0 |
1 | 575 |
}; |
576 |
||
577 |
||
578 |
// maps a BasicType to its instance field storage type: |
|
579 |
// all sub-word integral types are widened to T_INT |
|
580 |
extern BasicType type2field[T_CONFLICT+1]; |
|
581 |
extern BasicType type2wfield[T_CONFLICT+1]; |
|
582 |
||
583 |
||
584 |
// size in bytes |
|
585 |
enum ArrayElementSize { |
|
13969
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|
586 |
T_BOOLEAN_aelem_bytes = 1, |
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|
587 |
T_CHAR_aelem_bytes = 2, |
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|
588 |
T_FLOAT_aelem_bytes = 4, |
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|
589 |
T_DOUBLE_aelem_bytes = 8, |
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|
590 |
T_BYTE_aelem_bytes = 1, |
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|
591 |
T_SHORT_aelem_bytes = 2, |
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|
592 |
T_INT_aelem_bytes = 4, |
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|
593 |
T_LONG_aelem_bytes = 8, |
1 | 594 |
#ifdef _LP64 |
13969
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|
595 |
T_OBJECT_aelem_bytes = 8, |
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|
596 |
T_ARRAY_aelem_bytes = 8, |
1 | 597 |
#else |
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|
598 |
T_OBJECT_aelem_bytes = 4, |
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|
599 |
T_ARRAY_aelem_bytes = 4, |
1 | 600 |
#endif |
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|
601 |
T_NARROWOOP_aelem_bytes = 4, |
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|
602 |
T_NARROWKLASS_aelem_bytes = 4, |
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|
603 |
T_VOID_aelem_bytes = 0 |
1 | 604 |
}; |
605 |
||
202
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diff
changeset
|
606 |
extern int _type2aelembytes[T_CONFLICT+1]; // maps a BasicType to nof bytes used by its array element |
dc13bf0e5d5d
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diff
changeset
|
607 |
#ifdef ASSERT |
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diff
changeset
|
608 |
extern int type2aelembytes(BasicType t, bool allow_address = false); // asserts |
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diff
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|
609 |
#else |
6433 | 610 |
inline int type2aelembytes(BasicType t, bool allow_address = false) { return _type2aelembytes[t]; } |
202
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|
611 |
#endif |
1 | 612 |
|
613 |
||
614 |
// JavaValue serves as a container for arbitrary Java values. |
|
615 |
||
616 |
class JavaValue { |
|
617 |
||
618 |
public: |
|
619 |
typedef union JavaCallValue { |
|
620 |
jfloat f; |
|
621 |
jdouble d; |
|
622 |
jint i; |
|
623 |
jlong l; |
|
624 |
jobject h; |
|
625 |
} JavaCallValue; |
|
626 |
||
627 |
private: |
|
628 |
BasicType _type; |
|
629 |
JavaCallValue _value; |
|
630 |
||
631 |
public: |
|
632 |
JavaValue(BasicType t = T_ILLEGAL) { _type = t; } |
|
633 |
||
634 |
JavaValue(jfloat value) { |
|
635 |
_type = T_FLOAT; |
|
636 |
_value.f = value; |
|
637 |
} |
|
638 |
||
639 |
JavaValue(jdouble value) { |
|
640 |
_type = T_DOUBLE; |
|
641 |
_value.d = value; |
|
642 |
} |
|
643 |
||
644 |
jfloat get_jfloat() const { return _value.f; } |
|
645 |
jdouble get_jdouble() const { return _value.d; } |
|
646 |
jint get_jint() const { return _value.i; } |
|
647 |
jlong get_jlong() const { return _value.l; } |
|
648 |
jobject get_jobject() const { return _value.h; } |
|
649 |
JavaCallValue* get_value_addr() { return &_value; } |
|
650 |
BasicType get_type() const { return _type; } |
|
651 |
||
652 |
void set_jfloat(jfloat f) { _value.f = f;} |
|
653 |
void set_jdouble(jdouble d) { _value.d = d;} |
|
654 |
void set_jint(jint i) { _value.i = i;} |
|
655 |
void set_jlong(jlong l) { _value.l = l;} |
|
656 |
void set_jobject(jobject h) { _value.h = h;} |
|
657 |
void set_type(BasicType t) { _type = t; } |
|
658 |
||
659 |
jboolean get_jboolean() const { return (jboolean) (_value.i);} |
|
660 |
jbyte get_jbyte() const { return (jbyte) (_value.i);} |
|
661 |
jchar get_jchar() const { return (jchar) (_value.i);} |
|
662 |
jshort get_jshort() const { return (jshort) (_value.i);} |
|
663 |
||
664 |
}; |
|
665 |
||
666 |
||
667 |
#define STACK_BIAS 0 |
|
668 |
// V9 Sparc CPU's running in 64 Bit mode use a stack bias of 7ff |
|
669 |
// in order to extend the reach of the stack pointer. |
|
670 |
#if defined(SPARC) && defined(_LP64) |
|
671 |
#undef STACK_BIAS |
|
672 |
#define STACK_BIAS 0x7ff |
|
673 |
#endif |
|
674 |
||
675 |
||
676 |
// TosState describes the top-of-stack state before and after the execution of |
|
677 |
// a bytecode or method. The top-of-stack value may be cached in one or more CPU |
|
678 |
// registers. The TosState corresponds to the 'machine represention' of this cached |
|
679 |
// value. There's 4 states corresponding to the JAVA types int, long, float & double |
|
680 |
// as well as a 5th state in case the top-of-stack value is actually on the top |
|
681 |
// of stack (in memory) and thus not cached. The atos state corresponds to the itos |
|
682 |
// state when it comes to machine representation but is used separately for (oop) |
|
683 |
// type specific operations (e.g. verification code). |
|
684 |
||
685 |
enum TosState { // describes the tos cache contents |
|
686 |
btos = 0, // byte, bool tos cached |
|
2570
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diff
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|
687 |
ctos = 1, // char tos cached |
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|
688 |
stos = 2, // short tos cached |
1 | 689 |
itos = 3, // int tos cached |
690 |
ltos = 4, // long tos cached |
|
691 |
ftos = 5, // float tos cached |
|
692 |
dtos = 6, // double tos cached |
|
693 |
atos = 7, // object cached |
|
694 |
vtos = 8, // tos not cached |
|
695 |
number_of_states, |
|
696 |
ilgl // illegal state: should not occur |
|
697 |
}; |
|
698 |
||
699 |
||
700 |
inline TosState as_TosState(BasicType type) { |
|
701 |
switch (type) { |
|
702 |
case T_BYTE : return btos; |
|
2570
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diff
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|
703 |
case T_BOOLEAN: return btos; // FIXME: Add ztos |
1 | 704 |
case T_CHAR : return ctos; |
705 |
case T_SHORT : return stos; |
|
706 |
case T_INT : return itos; |
|
707 |
case T_LONG : return ltos; |
|
708 |
case T_FLOAT : return ftos; |
|
709 |
case T_DOUBLE : return dtos; |
|
710 |
case T_VOID : return vtos; |
|
711 |
case T_ARRAY : // fall through |
|
712 |
case T_OBJECT : return atos; |
|
713 |
} |
|
714 |
return ilgl; |
|
715 |
} |
|
716 |
||
2570
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|
717 |
inline BasicType as_BasicType(TosState state) { |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
718 |
switch (state) { |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
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2534
diff
changeset
|
719 |
//case ztos: return T_BOOLEAN;//FIXME |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
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diff
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|
720 |
case btos : return T_BYTE; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
721 |
case ctos : return T_CHAR; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
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diff
changeset
|
722 |
case stos : return T_SHORT; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
723 |
case itos : return T_INT; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
724 |
case ltos : return T_LONG; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
725 |
case ftos : return T_FLOAT; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
726 |
case dtos : return T_DOUBLE; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
727 |
case atos : return T_OBJECT; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
728 |
case vtos : return T_VOID; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
729 |
} |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
730 |
return T_ILLEGAL; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
731 |
} |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
732 |
|
1 | 733 |
|
734 |
// Helper function to convert BasicType info into TosState |
|
735 |
// Note: Cannot define here as it uses global constant at the time being. |
|
736 |
TosState as_TosState(BasicType type); |
|
737 |
||
738 |
||
739 |
// ReferenceType is used to distinguish between java/lang/ref/Reference subclasses |
|
740 |
||
741 |
enum ReferenceType { |
|
742 |
REF_NONE, // Regular class |
|
743 |
REF_OTHER, // Subclass of java/lang/ref/Reference, but not subclass of one of the classes below |
|
744 |
REF_SOFT, // Subclass of java/lang/ref/SoftReference |
|
745 |
REF_WEAK, // Subclass of java/lang/ref/WeakReference |
|
746 |
REF_FINAL, // Subclass of java/lang/ref/FinalReference |
|
747 |
REF_PHANTOM // Subclass of java/lang/ref/PhantomReference |
|
748 |
}; |
|
749 |
||
750 |
||
751 |
// JavaThreadState keeps track of which part of the code a thread is executing in. This |
|
752 |
// information is needed by the safepoint code. |
|
753 |
// |
|
754 |
// There are 4 essential states: |
|
755 |
// |
|
756 |
// _thread_new : Just started, but not executed init. code yet (most likely still in OS init code) |
|
757 |
// _thread_in_native : In native code. This is a safepoint region, since all oops will be in jobject handles |
|
758 |
// _thread_in_vm : Executing in the vm |
|
759 |
// _thread_in_Java : Executing either interpreted or compiled Java code (or could be in a stub) |
|
760 |
// |
|
761 |
// Each state has an associated xxxx_trans state, which is an intermediate state used when a thread is in |
|
762 |
// a transition from one state to another. These extra states makes it possible for the safepoint code to |
|
763 |
// handle certain thread_states without having to suspend the thread - making the safepoint code faster. |
|
764 |
// |
|
765 |
// Given a state, the xxx_trans state can always be found by adding 1. |
|
766 |
// |
|
767 |
enum JavaThreadState { |
|
768 |
_thread_uninitialized = 0, // should never happen (missing initialization) |
|
769 |
_thread_new = 2, // just starting up, i.e., in process of being initialized |
|
770 |
_thread_new_trans = 3, // corresponding transition state (not used, included for completness) |
|
771 |
_thread_in_native = 4, // running in native code |
|
772 |
_thread_in_native_trans = 5, // corresponding transition state |
|
773 |
_thread_in_vm = 6, // running in VM |
|
774 |
_thread_in_vm_trans = 7, // corresponding transition state |
|
775 |
_thread_in_Java = 8, // running in Java or in stub code |
|
776 |
_thread_in_Java_trans = 9, // corresponding transition state (not used, included for completness) |
|
777 |
_thread_blocked = 10, // blocked in vm |
|
778 |
_thread_blocked_trans = 11, // corresponding transition state |
|
779 |
_thread_max_state = 12 // maximum thread state+1 - used for statistics allocation |
|
780 |
}; |
|
781 |
||
782 |
||
783 |
// Handy constants for deciding which compiler mode to use. |
|
784 |
enum MethodCompilation { |
|
785 |
InvocationEntryBci = -1, // i.e., not a on-stack replacement compilation |
|
786 |
InvalidOSREntryBci = -2 |
|
787 |
}; |
|
788 |
||
789 |
// Enumeration to distinguish tiers of compilation |
|
790 |
enum CompLevel { |
|
6453 | 791 |
CompLevel_any = -1, |
792 |
CompLevel_all = -1, |
|
793 |
CompLevel_none = 0, // Interpreter |
|
794 |
CompLevel_simple = 1, // C1 |
|
795 |
CompLevel_limited_profile = 2, // C1, invocation & backedge counters |
|
796 |
CompLevel_full_profile = 3, // C1, invocation & backedge counters + mdo |
|
9103 | 797 |
CompLevel_full_optimization = 4, // C2 or Shark |
1 | 798 |
|
9103 | 799 |
#if defined(COMPILER2) || defined(SHARK) |
6453 | 800 |
CompLevel_highest_tier = CompLevel_full_optimization, // pure C2 and tiered |
801 |
#elif defined(COMPILER1) |
|
802 |
CompLevel_highest_tier = CompLevel_simple, // pure C1 |
|
1 | 803 |
#else |
6453 | 804 |
CompLevel_highest_tier = CompLevel_none, |
805 |
#endif |
|
806 |
||
807 |
#if defined(TIERED) |
|
808 |
CompLevel_initial_compile = CompLevel_full_profile // tiered |
|
809 |
#elif defined(COMPILER1) |
|
810 |
CompLevel_initial_compile = CompLevel_simple // pure C1 |
|
9103 | 811 |
#elif defined(COMPILER2) || defined(SHARK) |
6453 | 812 |
CompLevel_initial_compile = CompLevel_full_optimization // pure C2 |
813 |
#else |
|
814 |
CompLevel_initial_compile = CompLevel_none |
|
815 |
#endif |
|
1 | 816 |
}; |
817 |
||
6453 | 818 |
inline bool is_c1_compile(int comp_level) { |
819 |
return comp_level > CompLevel_none && comp_level < CompLevel_full_optimization; |
|
1 | 820 |
} |
6453 | 821 |
|
822 |
inline bool is_c2_compile(int comp_level) { |
|
1 | 823 |
return comp_level == CompLevel_full_optimization; |
824 |
} |
|
6453 | 825 |
|
1 | 826 |
inline bool is_highest_tier_compile(int comp_level) { |
827 |
return comp_level == CompLevel_highest_tier; |
|
828 |
} |
|
829 |
||
830 |
//---------------------------------------------------------------------------------------------------- |
|
831 |
// 'Forward' declarations of frequently used classes |
|
832 |
// (in order to reduce interface dependencies & reduce |
|
833 |
// number of unnecessary compilations after changes) |
|
834 |
||
835 |
class symbolTable; |
|
836 |
class ClassFileStream; |
|
837 |
||
838 |
class Event; |
|
839 |
||
840 |
class Thread; |
|
841 |
class VMThread; |
|
842 |
class JavaThread; |
|
843 |
class Threads; |
|
844 |
||
845 |
class VM_Operation; |
|
846 |
class VMOperationQueue; |
|
847 |
||
848 |
class CodeBlob; |
|
849 |
class nmethod; |
|
850 |
class OSRAdapter; |
|
851 |
class I2CAdapter; |
|
852 |
class C2IAdapter; |
|
853 |
class CompiledIC; |
|
854 |
class relocInfo; |
|
855 |
class ScopeDesc; |
|
856 |
class PcDesc; |
|
857 |
||
858 |
class Recompiler; |
|
859 |
class Recompilee; |
|
860 |
class RecompilationPolicy; |
|
861 |
class RFrame; |
|
862 |
class CompiledRFrame; |
|
863 |
class InterpretedRFrame; |
|
864 |
||
865 |
class frame; |
|
866 |
||
867 |
class vframe; |
|
868 |
class javaVFrame; |
|
869 |
class interpretedVFrame; |
|
870 |
class compiledVFrame; |
|
871 |
class deoptimizedVFrame; |
|
872 |
class externalVFrame; |
|
873 |
class entryVFrame; |
|
874 |
||
875 |
class RegisterMap; |
|
876 |
||
877 |
class Mutex; |
|
878 |
class Monitor; |
|
879 |
class BasicLock; |
|
880 |
class BasicObjectLock; |
|
881 |
||
882 |
class PeriodicTask; |
|
883 |
||
884 |
class JavaCallWrapper; |
|
885 |
||
886 |
class oopDesc; |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
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parents:
12779
diff
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|
887 |
class metaDataOopDesc; |
1 | 888 |
|
889 |
class NativeCall; |
|
890 |
||
891 |
class zone; |
|
892 |
||
893 |
class StubQueue; |
|
894 |
||
895 |
class outputStream; |
|
896 |
||
897 |
class ResourceArea; |
|
898 |
||
899 |
class DebugInformationRecorder; |
|
900 |
class ScopeValue; |
|
901 |
class CompressedStream; |
|
902 |
class DebugInfoReadStream; |
|
903 |
class DebugInfoWriteStream; |
|
904 |
class LocationValue; |
|
905 |
class ConstantValue; |
|
906 |
class IllegalValue; |
|
907 |
||
908 |
class PrivilegedElement; |
|
909 |
class MonitorArray; |
|
910 |
||
911 |
class MonitorInfo; |
|
912 |
||
913 |
class OffsetClosure; |
|
914 |
class OopMapCache; |
|
915 |
class InterpreterOopMap; |
|
916 |
class OopMapCacheEntry; |
|
917 |
class OSThread; |
|
918 |
||
919 |
typedef int (*OSThreadStartFunc)(void*); |
|
920 |
||
921 |
class Space; |
|
922 |
||
923 |
class JavaValue; |
|
924 |
class methodHandle; |
|
925 |
class JavaCallArguments; |
|
926 |
||
927 |
// Basic support for errors (general debug facilities not defined at this point fo the include phase) |
|
928 |
||
929 |
extern void basic_fatal(const char* msg); |
|
930 |
||
931 |
||
932 |
//---------------------------------------------------------------------------------------------------- |
|
933 |
// Special constants for debugging |
|
934 |
||
935 |
const jint badInt = -3; // generic "bad int" value |
|
936 |
const long badAddressVal = -2; // generic "bad address" value |
|
937 |
const long badOopVal = -1; // generic "bad oop" value |
|
938 |
const intptr_t badHeapOopVal = (intptr_t) CONST64(0x2BAD4B0BBAADBABE); // value used to zap heap after GC |
|
939 |
const int badHandleValue = 0xBC; // value used to zap vm handle area |
|
940 |
const int badResourceValue = 0xAB; // value used to zap resource area |
|
941 |
const int freeBlockPad = 0xBA; // value used to pad freed blocks. |
|
942 |
const int uninitBlockPad = 0xF1; // value used to zap newly malloc'd blocks. |
|
943 |
const intptr_t badJNIHandleVal = (intptr_t) CONST64(0xFEFEFEFEFEFEFEFE); // value used to zap jni handle area |
|
944 |
const juint badHeapWordVal = 0xBAADBABE; // value used to zap heap after GC |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12779
diff
changeset
|
945 |
const juint badMetaWordVal = 0xBAADFADE; // value used to zap metadata heap after GC |
1 | 946 |
const int badCodeHeapNewVal= 0xCC; // value used to zap Code heap at allocation |
947 |
const int badCodeHeapFreeVal = 0xDD; // value used to zap Code heap at deallocation |
|
948 |
||
949 |
||
950 |
// (These must be implemented as #defines because C++ compilers are |
|
951 |
// not obligated to inline non-integral constants!) |
|
952 |
#define badAddress ((address)::badAddressVal) |
|
953 |
#define badOop ((oop)::badOopVal) |
|
954 |
#define badHeapWord (::badHeapWordVal) |
|
955 |
#define badJNIHandle ((oop)::badJNIHandleVal) |
|
956 |
||
5076
8b74a4b60b31
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
4902
diff
changeset
|
957 |
// Default TaskQueue size is 16K (32-bit) or 128K (64-bit) |
8b74a4b60b31
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
4902
diff
changeset
|
958 |
#define TASKQUEUE_SIZE (NOT_LP64(1<<14) LP64_ONLY(1<<17)) |
1 | 959 |
|
960 |
//---------------------------------------------------------------------------------------------------- |
|
961 |
// Utility functions for bitfield manipulations |
|
962 |
||
963 |
const intptr_t AllBits = ~0; // all bits set in a word |
|
964 |
const intptr_t NoBits = 0; // no bits set in a word |
|
965 |
const jlong NoLongBits = 0; // no bits set in a long |
|
966 |
const intptr_t OneBit = 1; // only right_most bit set in a word |
|
967 |
||
968 |
// get a word with the n.th or the right-most or left-most n bits set |
|
969 |
// (note: #define used only so that they can be used in enum constant definitions) |
|
970 |
#define nth_bit(n) (n >= BitsPerWord ? 0 : OneBit << (n)) |
|
971 |
#define right_n_bits(n) (nth_bit(n) - 1) |
|
972 |
#define left_n_bits(n) (right_n_bits(n) << (n >= BitsPerWord ? 0 : (BitsPerWord - n))) |
|
973 |
||
974 |
// bit-operations using a mask m |
|
975 |
inline void set_bits (intptr_t& x, intptr_t m) { x |= m; } |
|
976 |
inline void clear_bits (intptr_t& x, intptr_t m) { x &= ~m; } |
|
977 |
inline intptr_t mask_bits (intptr_t x, intptr_t m) { return x & m; } |
|
978 |
inline jlong mask_long_bits (jlong x, jlong m) { return x & m; } |
|
979 |
inline bool mask_bits_are_true (intptr_t flags, intptr_t mask) { return (flags & mask) == mask; } |
|
980 |
||
981 |
// bit-operations using the n.th bit |
|
982 |
inline void set_nth_bit(intptr_t& x, int n) { set_bits (x, nth_bit(n)); } |
|
983 |
inline void clear_nth_bit(intptr_t& x, int n) { clear_bits(x, nth_bit(n)); } |
|
984 |
inline bool is_set_nth_bit(intptr_t x, int n) { return mask_bits (x, nth_bit(n)) != NoBits; } |
|
985 |
||
986 |
// returns the bitfield of x starting at start_bit_no with length field_length (no sign-extension!) |
|
987 |
inline intptr_t bitfield(intptr_t x, int start_bit_no, int field_length) { |
|
988 |
return mask_bits(x >> start_bit_no, right_n_bits(field_length)); |
|
989 |
} |
|
990 |
||
991 |
||
992 |
//---------------------------------------------------------------------------------------------------- |
|
993 |
// Utility functions for integers |
|
994 |
||
995 |
// Avoid use of global min/max macros which may cause unwanted double |
|
996 |
// evaluation of arguments. |
|
997 |
#ifdef max |
|
998 |
#undef max |
|
999 |
#endif |
|
1000 |
||
1001 |
#ifdef min |
|
1002 |
#undef min |
|
1003 |
#endif |
|
1004 |
||
1005 |
#define max(a,b) Do_not_use_max_use_MAX2_instead |
|
1006 |
#define min(a,b) Do_not_use_min_use_MIN2_instead |
|
1007 |
||
1008 |
// It is necessary to use templates here. Having normal overloaded |
|
1009 |
// functions does not work because it is necessary to provide both 32- |
|
1010 |
// and 64-bit overloaded functions, which does not work, and having |
|
1011 |
// explicitly-typed versions of these routines (i.e., MAX2I, MAX2L) |
|
1012 |
// will be even more error-prone than macros. |
|
1013 |
template<class T> inline T MAX2(T a, T b) { return (a > b) ? a : b; } |
|
1014 |
template<class T> inline T MIN2(T a, T b) { return (a < b) ? a : b; } |
|
1015 |
template<class T> inline T MAX3(T a, T b, T c) { return MAX2(MAX2(a, b), c); } |
|
1016 |
template<class T> inline T MIN3(T a, T b, T c) { return MIN2(MIN2(a, b), c); } |
|
1017 |
template<class T> inline T MAX4(T a, T b, T c, T d) { return MAX2(MAX3(a, b, c), d); } |
|
1018 |
template<class T> inline T MIN4(T a, T b, T c, T d) { return MIN2(MIN3(a, b, c), d); } |
|
1019 |
||
1020 |
template<class T> inline T ABS(T x) { return (x > 0) ? x : -x; } |
|
1021 |
||
1022 |
// true if x is a power of 2, false otherwise |
|
1023 |
inline bool is_power_of_2(intptr_t x) { |
|
1024 |
return ((x != NoBits) && (mask_bits(x, x - 1) == NoBits)); |
|
1025 |
} |
|
1026 |
||
1027 |
// long version of is_power_of_2 |
|
1028 |
inline bool is_power_of_2_long(jlong x) { |
|
1029 |
return ((x != NoLongBits) && (mask_long_bits(x, x - 1) == NoLongBits)); |
|
1030 |
} |
|
1031 |
||
1032 |
//* largest i such that 2^i <= x |
|
1033 |
// A negative value of 'x' will return '31' |
|
1034 |
inline int log2_intptr(intptr_t x) { |
|
1035 |
int i = -1; |
|
1036 |
uintptr_t p = 1; |
|
1037 |
while (p != 0 && p <= (uintptr_t)x) { |
|
1038 |
// p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) |
|
1039 |
i++; p *= 2; |
|
1040 |
} |
|
1041 |
// p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) |
|
2131 | 1042 |
// (if p = 0 then overflow occurred and i = 31) |
1 | 1043 |
return i; |
1044 |
} |
|
1045 |
||
1046 |
//* largest i such that 2^i <= x |
|
1047 |
// A negative value of 'x' will return '63' |
|
1048 |
inline int log2_long(jlong x) { |
|
1049 |
int i = -1; |
|
1050 |
julong p = 1; |
|
1051 |
while (p != 0 && p <= (julong)x) { |
|
1052 |
// p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) |
|
1053 |
i++; p *= 2; |
|
1054 |
} |
|
1055 |
// p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) |
|
2131 | 1056 |
// (if p = 0 then overflow occurred and i = 63) |
1 | 1057 |
return i; |
1058 |
} |
|
1059 |
||
1060 |
//* the argument must be exactly a power of 2 |
|
1061 |
inline int exact_log2(intptr_t x) { |
|
1062 |
#ifdef ASSERT |
|
1063 |
if (!is_power_of_2(x)) basic_fatal("x must be a power of 2"); |
|
1064 |
#endif |
|
1065 |
return log2_intptr(x); |
|
1066 |
} |
|
1067 |
||
2032
1e27661bff28
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
2023
diff
changeset
|
1068 |
//* the argument must be exactly a power of 2 |
1e27661bff28
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
2023
diff
changeset
|
1069 |
inline int exact_log2_long(jlong x) { |
1e27661bff28
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
2023
diff
changeset
|
1070 |
#ifdef ASSERT |
1e27661bff28
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
2023
diff
changeset
|
1071 |
if (!is_power_of_2_long(x)) basic_fatal("x must be a power of 2"); |
1e27661bff28
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
2023
diff
changeset
|
1072 |
#endif |
1e27661bff28
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
2023
diff
changeset
|
1073 |
return log2_long(x); |
1e27661bff28
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
2023
diff
changeset
|
1074 |
} |
1e27661bff28
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
2023
diff
changeset
|
1075 |
|
1 | 1076 |
|
1077 |
// returns integer round-up to the nearest multiple of s (s must be a power of two) |
|
1078 |
inline intptr_t round_to(intptr_t x, uintx s) { |
|
1079 |
#ifdef ASSERT |
|
1080 |
if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); |
|
1081 |
#endif |
|
1082 |
const uintx m = s - 1; |
|
1083 |
return mask_bits(x + m, ~m); |
|
1084 |
} |
|
1085 |
||
1086 |
// returns integer round-down to the nearest multiple of s (s must be a power of two) |
|
1087 |
inline intptr_t round_down(intptr_t x, uintx s) { |
|
1088 |
#ifdef ASSERT |
|
1089 |
if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); |
|
1090 |
#endif |
|
1091 |
const uintx m = s - 1; |
|
1092 |
return mask_bits(x, ~m); |
|
1093 |
} |
|
1094 |
||
1095 |
||
1096 |
inline bool is_odd (intx x) { return x & 1; } |
|
1097 |
inline bool is_even(intx x) { return !is_odd(x); } |
|
1098 |
||
1099 |
// "to" should be greater than "from." |
|
1100 |
inline intx byte_size(void* from, void* to) { |
|
1101 |
return (address)to - (address)from; |
|
1102 |
} |
|
1103 |
||
1104 |
//---------------------------------------------------------------------------------------------------- |
|
1105 |
// Avoid non-portable casts with these routines (DEPRECATED) |
|
1106 |
||
1107 |
// NOTE: USE Bytes class INSTEAD WHERE POSSIBLE |
|
1108 |
// Bytes is optimized machine-specifically and may be much faster then the portable routines below. |
|
1109 |
||
1110 |
// Given sequence of four bytes, build into a 32-bit word |
|
1111 |
// following the conventions used in class files. |
|
1112 |
// On the 386, this could be realized with a simple address cast. |
|
1113 |
// |
|
1114 |
||
1115 |
// This routine takes eight bytes: |
|
1116 |
inline u8 build_u8_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { |
|
6459
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1117 |
return (( u8(c1) << 56 ) & ( u8(0xff) << 56 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1118 |
| (( u8(c2) << 48 ) & ( u8(0xff) << 48 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1119 |
| (( u8(c3) << 40 ) & ( u8(0xff) << 40 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1120 |
| (( u8(c4) << 32 ) & ( u8(0xff) << 32 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1121 |
| (( u8(c5) << 24 ) & ( u8(0xff) << 24 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1122 |
| (( u8(c6) << 16 ) & ( u8(0xff) << 16 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1123 |
| (( u8(c7) << 8 ) & ( u8(0xff) << 8 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1124 |
| (( u8(c8) << 0 ) & ( u8(0xff) << 0 )); |
1 | 1125 |
} |
1126 |
||
1127 |
// This routine takes four bytes: |
|
1128 |
inline u4 build_u4_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { |
|
6459
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1129 |
return (( u4(c1) << 24 ) & 0xff000000) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1130 |
| (( u4(c2) << 16 ) & 0x00ff0000) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1131 |
| (( u4(c3) << 8 ) & 0x0000ff00) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1132 |
| (( u4(c4) << 0 ) & 0x000000ff); |
1 | 1133 |
} |
1134 |
||
1135 |
// And this one works if the four bytes are contiguous in memory: |
|
1136 |
inline u4 build_u4_from( u1* p ) { |
|
1137 |
return build_u4_from( p[0], p[1], p[2], p[3] ); |
|
1138 |
} |
|
1139 |
||
1140 |
// Ditto for two-byte ints: |
|
1141 |
inline u2 build_u2_from( u1 c1, u1 c2 ) { |
|
6459
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1142 |
return u2((( u2(c1) << 8 ) & 0xff00) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1143 |
| (( u2(c2) << 0 ) & 0x00ff)); |
1 | 1144 |
} |
1145 |
||
1146 |
// And this one works if the two bytes are contiguous in memory: |
|
1147 |
inline u2 build_u2_from( u1* p ) { |
|
1148 |
return build_u2_from( p[0], p[1] ); |
|
1149 |
} |
|
1150 |
||
1151 |
// Ditto for floats: |
|
1152 |
inline jfloat build_float_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { |
|
1153 |
u4 u = build_u4_from( c1, c2, c3, c4 ); |
|
1154 |
return *(jfloat*)&u; |
|
1155 |
} |
|
1156 |
||
1157 |
inline jfloat build_float_from( u1* p ) { |
|
1158 |
u4 u = build_u4_from( p ); |
|
1159 |
return *(jfloat*)&u; |
|
1160 |
} |
|
1161 |
||
1162 |
||
1163 |
// now (64-bit) longs |
|
1164 |
||
1165 |
inline jlong build_long_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { |
|
6459
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1166 |
return (( jlong(c1) << 56 ) & ( jlong(0xff) << 56 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1167 |
| (( jlong(c2) << 48 ) & ( jlong(0xff) << 48 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1168 |
| (( jlong(c3) << 40 ) & ( jlong(0xff) << 40 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1169 |
| (( jlong(c4) << 32 ) & ( jlong(0xff) << 32 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1170 |
| (( jlong(c5) << 24 ) & ( jlong(0xff) << 24 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1171 |
| (( jlong(c6) << 16 ) & ( jlong(0xff) << 16 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1172 |
| (( jlong(c7) << 8 ) & ( jlong(0xff) << 8 )) |
3d75ed40a975
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
6453
diff
changeset
|
1173 |
| (( jlong(c8) << 0 ) & ( jlong(0xff) << 0 )); |
1 | 1174 |
} |
1175 |
||
1176 |
inline jlong build_long_from( u1* p ) { |
|
1177 |
return build_long_from( p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7] ); |
|
1178 |
} |
|
1179 |
||
1180 |
||
1181 |
// Doubles, too! |
|
1182 |
inline jdouble build_double_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { |
|
1183 |
jlong u = build_long_from( c1, c2, c3, c4, c5, c6, c7, c8 ); |
|
1184 |
return *(jdouble*)&u; |
|
1185 |
} |
|
1186 |
||
1187 |
inline jdouble build_double_from( u1* p ) { |
|
1188 |
jlong u = build_long_from( p ); |
|
1189 |
return *(jdouble*)&u; |
|
1190 |
} |
|
1191 |
||
1192 |
||
1193 |
// Portable routines to go the other way: |
|
1194 |
||
1195 |
inline void explode_short_to( u2 x, u1& c1, u1& c2 ) { |
|
1196 |
c1 = u1(x >> 8); |
|
1197 |
c2 = u1(x); |
|
1198 |
} |
|
1199 |
||
1200 |
inline void explode_short_to( u2 x, u1* p ) { |
|
1201 |
explode_short_to( x, p[0], p[1]); |
|
1202 |
} |
|
1203 |
||
1204 |
inline void explode_int_to( u4 x, u1& c1, u1& c2, u1& c3, u1& c4 ) { |
|
1205 |
c1 = u1(x >> 24); |
|
1206 |
c2 = u1(x >> 16); |
|
1207 |
c3 = u1(x >> 8); |
|
1208 |
c4 = u1(x); |
|
1209 |
} |
|
1210 |
||
1211 |
inline void explode_int_to( u4 x, u1* p ) { |
|
1212 |
explode_int_to( x, p[0], p[1], p[2], p[3]); |
|
1213 |
} |
|
1214 |
||
1215 |
||
1216 |
// Pack and extract shorts to/from ints: |
|
1217 |
||
1218 |
inline int extract_low_short_from_int(jint x) { |
|
1219 |
return x & 0xffff; |
|
1220 |
} |
|
1221 |
||
1222 |
inline int extract_high_short_from_int(jint x) { |
|
1223 |
return (x >> 16) & 0xffff; |
|
1224 |
} |
|
1225 |
||
1226 |
inline int build_int_from_shorts( jushort low, jushort high ) { |
|
1227 |
return ((int)((unsigned int)high << 16) | (unsigned int)low); |
|
1228 |
} |
|
1229 |
||
1230 |
// Printf-style formatters for fixed- and variable-width types as pointers and |
|
10565 | 1231 |
// integers. These are derived from the definitions in inttypes.h. If the platform |
1232 |
// doesn't provide appropriate definitions, they should be provided in |
|
1233 |
// the compiler-specific definitions file (e.g., globalDefinitions_gcc.hpp) |
|
1 | 1234 |
|
8680 | 1235 |
#define BOOL_TO_STR(_b_) ((_b_) ? "true" : "false") |
7923 | 1236 |
|
1 | 1237 |
// Format 32-bit quantities. |
10565 | 1238 |
#define INT32_FORMAT "%" PRId32 |
1239 |
#define UINT32_FORMAT "%" PRIu32 |
|
1240 |
#define INT32_FORMAT_W(width) "%" #width PRId32 |
|
1241 |
#define UINT32_FORMAT_W(width) "%" #width PRIu32 |
|
1 | 1242 |
|
10565 | 1243 |
#define PTR32_FORMAT "0x%08" PRIx32 |
1 | 1244 |
|
1245 |
// Format 64-bit quantities. |
|
10565 | 1246 |
#define INT64_FORMAT "%" PRId64 |
1247 |
#define UINT64_FORMAT "%" PRIu64 |
|
1248 |
#define INT64_FORMAT_W(width) "%" #width PRId64 |
|
1249 |
#define UINT64_FORMAT_W(width) "%" #width PRIu64 |
|
1 | 1250 |
|
10565 | 1251 |
#define PTR64_FORMAT "0x%016" PRIx64 |
1 | 1252 |
|
15228
e92acc84ade3
7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents:
14579
diff
changeset
|
1253 |
// Format jlong, if necessary |
e92acc84ade3
7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents:
14579
diff
changeset
|
1254 |
#ifndef JLONG_FORMAT |
e92acc84ade3
7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents:
14579
diff
changeset
|
1255 |
#define JLONG_FORMAT INT64_FORMAT |
e92acc84ade3
7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents:
14579
diff
changeset
|
1256 |
#endif |
e92acc84ade3
7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents:
14579
diff
changeset
|
1257 |
#ifndef JULONG_FORMAT |
e92acc84ade3
7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents:
14579
diff
changeset
|
1258 |
#define JULONG_FORMAT UINT64_FORMAT |
e92acc84ade3
7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents:
14579
diff
changeset
|
1259 |
#endif |
e92acc84ade3
7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents:
14579
diff
changeset
|
1260 |
|
10565 | 1261 |
// Format pointers which change size between 32- and 64-bit. |
1 | 1262 |
#ifdef _LP64 |
10565 | 1263 |
#define INTPTR_FORMAT "0x%016" PRIxPTR |
1264 |
#define PTR_FORMAT "0x%016" PRIxPTR |
|
1 | 1265 |
#else // !_LP64 |
10565 | 1266 |
#define INTPTR_FORMAT "0x%08" PRIxPTR |
1267 |
#define PTR_FORMAT "0x%08" PRIxPTR |
|
1 | 1268 |
#endif // _LP64 |
1269 |
||
10565 | 1270 |
#define SSIZE_FORMAT "%" PRIdPTR |
1271 |
#define SIZE_FORMAT "%" PRIuPTR |
|
1272 |
#define SSIZE_FORMAT_W(width) "%" #width PRIdPTR |
|
1273 |
#define SIZE_FORMAT_W(width) "%" #width PRIuPTR |
|
1274 |
||
1275 |
#define INTX_FORMAT "%" PRIdPTR |
|
1276 |
#define UINTX_FORMAT "%" PRIuPTR |
|
1277 |
#define INTX_FORMAT_W(width) "%" #width PRIdPTR |
|
1278 |
#define UINTX_FORMAT_W(width) "%" #width PRIuPTR |
|
1279 |
||
1 | 1280 |
|
1281 |
// Enable zap-a-lot if in debug version. |
|
1282 |
||
1283 |
# ifdef ASSERT |
|
1284 |
# ifdef COMPILER2 |
|
1285 |
# define ENABLE_ZAP_DEAD_LOCALS |
|
1286 |
#endif /* COMPILER2 */ |
|
1287 |
# endif /* ASSERT */ |
|
1288 |
||
1289 |
#define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0])) |
|
7397 | 1290 |
|
14579
7f6ce6e3dd80
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
14487
diff
changeset
|
1291 |
// Dereference vptr |
7f6ce6e3dd80
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
14487
diff
changeset
|
1292 |
// All C++ compilers that we know of have the vtbl pointer in the first |
7f6ce6e3dd80
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
14487
diff
changeset
|
1293 |
// word. If there are exceptions, this function needs to be made compiler |
7f6ce6e3dd80
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
14487
diff
changeset
|
1294 |
// specific. |
7f6ce6e3dd80
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
14487
diff
changeset
|
1295 |
static inline void* dereference_vptr(void* addr) { |
7f6ce6e3dd80
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
14487
diff
changeset
|
1296 |
return *(void**)addr; |
7f6ce6e3dd80
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
14487
diff
changeset
|
1297 |
} |
7f6ce6e3dd80
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
14487
diff
changeset
|
1298 |
|
7397 | 1299 |
#endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP |