author | dholmes |
Mon, 21 Mar 2011 22:16:19 -0400 | |
changeset 8735 | 9829dda3b405 |
parent 8680 | f1c414e16a4c |
child 9103 | 535a93f494f6 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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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_HPP |
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#define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP |
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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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// 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 size_t LOG_K = 10; |
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const size_t LOG_M = 2 * LOG_K; |
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const size_t LOG_G = 2 * LOG_M; |
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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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inline const char* proper_unit_for_byte_size(size_t s) { |
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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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inline size_t byte_size_in_proper_unit(size_t s) { |
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if (s >= 10*M) { |
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return s/M; |
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} else if (s >= 10*K) { |
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return 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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// 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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203 |
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const intx min_intx = (intx)1 << (sizeof(intx)*BitsPerByte-1); |
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const intx max_intx = (uintx)min_intx - 1; |
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const uintx max_uintx = (uintx)-1; |
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// Table of values: |
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// sizeof intx 4 8 |
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// 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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216 |
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//---------------------------------------------------------------------------------------------------- |
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// Java type definitions |
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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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// Utility functions to "portably" (?) bit twiddle pointers |
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// Where portable means keep ANSI C++ compilers quiet |
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232 |
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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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// Utility functions to "portably" make cast to/from function pointers. |
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238 |
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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240 |
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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247 |
// if (pointer_delta(end(), top()) >= size) { |
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248 |
// // enough room for an object of size |
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249 |
// ... |
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250 |
// and then additions like |
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251 |
// ... top() + size ... |
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252 |
// are safe because we know that top() is at least size below end(). |
|
253 |
inline size_t pointer_delta(const void* left, |
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254 |
const void* right, |
|
255 |
size_t element_size) { |
|
256 |
return (((uintptr_t) left) - ((uintptr_t) right)) / element_size; |
|
257 |
} |
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258 |
// A version specialized for HeapWord*'s. |
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259 |
inline size_t pointer_delta(const HeapWord* left, const HeapWord* right) { |
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260 |
return pointer_delta(left, right, sizeof(HeapWord)); |
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261 |
} |
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262 |
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263 |
// |
|
264 |
// ANSI C++ does not allow casting from one pointer type to a function pointer |
|
265 |
// directly without at best a warning. This macro accomplishes it silently |
|
266 |
// In every case that is present at this point the value be cast is a pointer |
|
267 |
// to a C linkage function. In somecase the type used for the cast reflects |
|
268 |
// that linkage and a picky compiler would not complain. In other cases because |
|
269 |
// there is no convenient place to place a typedef with extern C linkage (i.e |
|
270 |
// a platform dependent header file) it doesn't. At this point no compiler seems |
|
271 |
// picky enough to catch these instances (which are few). It is possible that |
|
272 |
// using templates could fix these for all cases. This use of templates is likely |
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273 |
// so far from the middle of the road that it is likely to be problematic in |
|
274 |
// many C++ compilers. |
|
275 |
// |
|
276 |
#define CAST_TO_FN_PTR(func_type, value) ((func_type)(castable_address(value))) |
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277 |
#define CAST_FROM_FN_PTR(new_type, func_ptr) ((new_type)((address_word)(func_ptr))) |
|
278 |
||
279 |
// Unsigned byte types for os and stream.hpp |
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280 |
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281 |
// Unsigned one, two, four and eigth byte quantities used for describing |
|
282 |
// the .class file format. See JVM book chapter 4. |
|
283 |
||
284 |
typedef jubyte u1; |
|
285 |
typedef jushort u2; |
|
286 |
typedef juint u4; |
|
287 |
typedef julong u8; |
|
288 |
||
289 |
const jubyte max_jubyte = (jubyte)-1; // 0xFF largest jubyte |
|
290 |
const jushort max_jushort = (jushort)-1; // 0xFFFF largest jushort |
|
291 |
const juint max_juint = (juint)-1; // 0xFFFFFFFF largest juint |
|
292 |
const julong max_julong = (julong)-1; // 0xFF....FF largest julong |
|
293 |
||
294 |
//---------------------------------------------------------------------------------------------------- |
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295 |
// JVM spec restrictions |
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296 |
||
297 |
const int max_method_code_size = 64*K - 1; // JVM spec, 2nd ed. section 4.8.1 (p.134) |
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298 |
||
299 |
||
300 |
//---------------------------------------------------------------------------------------------------- |
|
301 |
// HotSwap - for JVMTI aka Class File Replacement and PopFrame |
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302 |
// |
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303 |
// Determines whether on-the-fly class replacement and frame popping are enabled. |
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304 |
||
305 |
#define HOTSWAP |
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306 |
||
307 |
//---------------------------------------------------------------------------------------------------- |
|
308 |
// Object alignment, in units of HeapWords. |
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309 |
// |
|
310 |
// Minimum is max(BytesPerLong, BytesPerDouble, BytesPerOop) / HeapWordSize, so jlong, jdouble and |
|
311 |
// reference fields can be naturally aligned. |
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312 |
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extern int MinObjAlignment; |
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extern int MinObjAlignmentInBytes; |
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extern int MinObjAlignmentInBytesMask; |
1 | 316 |
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extern int LogMinObjAlignment; |
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extern int LogMinObjAlignmentInBytes; |
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1 | 320 |
// Machine dependent stuff |
321 |
||
7397 | 322 |
#ifdef TARGET_ARCH_x86 |
323 |
# include "globalDefinitions_x86.hpp" |
|
324 |
#endif |
|
325 |
#ifdef TARGET_ARCH_sparc |
|
326 |
# include "globalDefinitions_sparc.hpp" |
|
327 |
#endif |
|
328 |
#ifdef TARGET_ARCH_zero |
|
329 |
# include "globalDefinitions_zero.hpp" |
|
330 |
#endif |
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|
331 |
#ifdef TARGET_ARCH_arm |
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|
332 |
# include "globalDefinitions_arm.hpp" |
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|
333 |
#endif |
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|
334 |
#ifdef TARGET_ARCH_ppc |
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|
335 |
# include "globalDefinitions_ppc.hpp" |
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|
336 |
#endif |
7397 | 337 |
|
1 | 338 |
|
339 |
// The byte alignment to be used by Arena::Amalloc. See bugid 4169348. |
|
340 |
// Note: this value must be a power of 2 |
|
341 |
||
342 |
#define ARENA_AMALLOC_ALIGNMENT (2*BytesPerWord) |
|
343 |
||
344 |
// Signed variants of alignment helpers. There are two versions of each, a macro |
|
345 |
// for use in places like enum definitions that require compile-time constant |
|
346 |
// expressions and a function for all other places so as to get type checking. |
|
347 |
||
348 |
#define align_size_up_(size, alignment) (((size) + ((alignment) - 1)) & ~((alignment) - 1)) |
|
349 |
||
350 |
inline intptr_t align_size_up(intptr_t size, intptr_t alignment) { |
|
351 |
return align_size_up_(size, alignment); |
|
352 |
} |
|
353 |
||
354 |
#define align_size_down_(size, alignment) ((size) & ~((alignment) - 1)) |
|
355 |
||
356 |
inline intptr_t align_size_down(intptr_t size, intptr_t alignment) { |
|
357 |
return align_size_down_(size, alignment); |
|
358 |
} |
|
359 |
||
360 |
// Align objects by rounding up their size, in HeapWord units. |
|
361 |
||
362 |
#define align_object_size_(size) align_size_up_(size, MinObjAlignment) |
|
363 |
||
364 |
inline intptr_t align_object_size(intptr_t size) { |
|
365 |
return align_size_up(size, MinObjAlignment); |
|
366 |
} |
|
367 |
||
5694
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|
368 |
inline bool is_object_aligned(intptr_t addr) { |
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|
369 |
return addr == align_object_size(addr); |
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|
370 |
} |
1 | 371 |
|
5694
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|
372 |
// Pad out certain offsets to jlong alignment, in HeapWord units. |
1 | 373 |
|
374 |
inline intptr_t align_object_offset(intptr_t offset) { |
|
375 |
return align_size_up(offset, HeapWordsPerLong); |
|
376 |
} |
|
377 |
||
6067 | 378 |
// The expected size in bytes of a cache line, used to pad data structures. |
379 |
#define DEFAULT_CACHE_LINE_SIZE 64 |
|
380 |
||
381 |
// Bytes needed to pad type to avoid cache-line sharing; alignment should be the |
|
382 |
// expected cache line size (a power of two). The first addend avoids sharing |
|
383 |
// when the start address is not a multiple of alignment; the second maintains |
|
384 |
// alignment of starting addresses that happen to be a multiple. |
|
385 |
#define PADDING_SIZE(type, alignment) \ |
|
386 |
((alignment) + align_size_up_(sizeof(type), alignment)) |
|
387 |
||
388 |
// Templates to create a subclass padded to avoid cache line sharing. These are |
|
389 |
// effective only when applied to derived-most (leaf) classes. |
|
390 |
||
391 |
// When no args are passed to the base ctor. |
|
392 |
template <class T, size_t alignment = DEFAULT_CACHE_LINE_SIZE> |
|
393 |
class Padded: public T { |
|
394 |
private: |
|
395 |
char _pad_buf_[PADDING_SIZE(T, alignment)]; |
|
396 |
}; |
|
397 |
||
398 |
// When either 0 or 1 args may be passed to the base ctor. |
|
399 |
template <class T, typename Arg1T, size_t alignment = DEFAULT_CACHE_LINE_SIZE> |
|
400 |
class Padded01: public T { |
|
401 |
public: |
|
402 |
Padded01(): T() { } |
|
403 |
Padded01(Arg1T arg1): T(arg1) { } |
|
404 |
private: |
|
405 |
char _pad_buf_[PADDING_SIZE(T, alignment)]; |
|
406 |
}; |
|
1 | 407 |
|
408 |
//---------------------------------------------------------------------------------------------------- |
|
409 |
// Utility macros for compilers |
|
410 |
// used to silence compiler warnings |
|
411 |
||
412 |
#define Unused_Variable(var) var |
|
413 |
||
414 |
||
415 |
//---------------------------------------------------------------------------------------------------- |
|
416 |
// Miscellaneous |
|
417 |
||
418 |
// 6302670 Eliminate Hotspot __fabsf dependency |
|
419 |
// All fabs() callers should call this function instead, which will implicitly |
|
420 |
// convert the operand to double, avoiding a dependency on __fabsf which |
|
421 |
// doesn't exist in early versions of Solaris 8. |
|
422 |
inline double fabsd(double value) { |
|
423 |
return fabs(value); |
|
424 |
} |
|
425 |
||
426 |
inline jint low (jlong value) { return jint(value); } |
|
427 |
inline jint high(jlong value) { return jint(value >> 32); } |
|
428 |
||
429 |
// the fancy casts are a hopefully portable way |
|
430 |
// to do unsigned 32 to 64 bit type conversion |
|
431 |
inline void set_low (jlong* value, jint low ) { *value &= (jlong)0xffffffff << 32; |
|
432 |
*value |= (jlong)(julong)(juint)low; } |
|
433 |
||
434 |
inline void set_high(jlong* value, jint high) { *value &= (jlong)(julong)(juint)0xffffffff; |
|
435 |
*value |= (jlong)high << 32; } |
|
436 |
||
437 |
inline jlong jlong_from(jint h, jint l) { |
|
438 |
jlong result = 0; // initialization to avoid warning |
|
439 |
set_high(&result, h); |
|
440 |
set_low(&result, l); |
|
441 |
return result; |
|
442 |
} |
|
443 |
||
444 |
union jlong_accessor { |
|
445 |
jint words[2]; |
|
446 |
jlong long_value; |
|
447 |
}; |
|
448 |
||
360
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|
449 |
void basic_types_init(); // cannot define here; uses assert |
1 | 450 |
|
451 |
||
452 |
// NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java |
|
453 |
enum BasicType { |
|
454 |
T_BOOLEAN = 4, |
|
455 |
T_CHAR = 5, |
|
456 |
T_FLOAT = 6, |
|
457 |
T_DOUBLE = 7, |
|
458 |
T_BYTE = 8, |
|
459 |
T_SHORT = 9, |
|
460 |
T_INT = 10, |
|
461 |
T_LONG = 11, |
|
462 |
T_OBJECT = 12, |
|
463 |
T_ARRAY = 13, |
|
464 |
T_VOID = 14, |
|
465 |
T_ADDRESS = 15, |
|
360
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|
466 |
T_NARROWOOP= 16, |
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|
467 |
T_CONFLICT = 17, // for stack value type with conflicting contents |
1 | 468 |
T_ILLEGAL = 99 |
469 |
}; |
|
470 |
||
202
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|
471 |
inline bool is_java_primitive(BasicType t) { |
dc13bf0e5d5d
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|
472 |
return T_BOOLEAN <= t && t <= T_LONG; |
dc13bf0e5d5d
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
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|
473 |
} |
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changeset
|
474 |
|
2534 | 475 |
inline bool is_subword_type(BasicType t) { |
476 |
// these guys are processed exactly like T_INT in calling sequences: |
|
477 |
return (t == T_BOOLEAN || t == T_CHAR || t == T_BYTE || t == T_SHORT); |
|
478 |
} |
|
479 |
||
480 |
inline bool is_signed_subword_type(BasicType t) { |
|
481 |
return (t == T_BYTE || t == T_SHORT); |
|
482 |
} |
|
483 |
||
1 | 484 |
// Convert a char from a classfile signature to a BasicType |
485 |
inline BasicType char2type(char c) { |
|
486 |
switch( c ) { |
|
487 |
case 'B': return T_BYTE; |
|
488 |
case 'C': return T_CHAR; |
|
489 |
case 'D': return T_DOUBLE; |
|
490 |
case 'F': return T_FLOAT; |
|
491 |
case 'I': return T_INT; |
|
492 |
case 'J': return T_LONG; |
|
493 |
case 'S': return T_SHORT; |
|
494 |
case 'Z': return T_BOOLEAN; |
|
495 |
case 'V': return T_VOID; |
|
496 |
case 'L': return T_OBJECT; |
|
497 |
case '[': return T_ARRAY; |
|
498 |
} |
|
499 |
return T_ILLEGAL; |
|
500 |
} |
|
501 |
||
502 |
extern char type2char_tab[T_CONFLICT+1]; // Map a BasicType to a jchar |
|
503 |
inline char type2char(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2char_tab[t] : 0; } |
|
504 |
extern int type2size[T_CONFLICT+1]; // Map BasicType to result stack elements |
|
505 |
extern const char* type2name_tab[T_CONFLICT+1]; // Map a BasicType to a jchar |
|
506 |
inline const char* type2name(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2name_tab[t] : NULL; } |
|
507 |
extern BasicType name2type(const char* name); |
|
508 |
||
509 |
// Auxilary math routines |
|
510 |
// least common multiple |
|
511 |
extern size_t lcm(size_t a, size_t b); |
|
512 |
||
513 |
||
514 |
// NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java |
|
515 |
enum BasicTypeSize { |
|
516 |
T_BOOLEAN_size = 1, |
|
517 |
T_CHAR_size = 1, |
|
518 |
T_FLOAT_size = 1, |
|
519 |
T_DOUBLE_size = 2, |
|
520 |
T_BYTE_size = 1, |
|
521 |
T_SHORT_size = 1, |
|
522 |
T_INT_size = 1, |
|
523 |
T_LONG_size = 2, |
|
524 |
T_OBJECT_size = 1, |
|
525 |
T_ARRAY_size = 1, |
|
360
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parents:
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diff
changeset
|
526 |
T_NARROWOOP_size = 1, |
1 | 527 |
T_VOID_size = 0 |
528 |
}; |
|
529 |
||
530 |
||
531 |
// maps a BasicType to its instance field storage type: |
|
532 |
// all sub-word integral types are widened to T_INT |
|
533 |
extern BasicType type2field[T_CONFLICT+1]; |
|
534 |
extern BasicType type2wfield[T_CONFLICT+1]; |
|
535 |
||
536 |
||
537 |
// size in bytes |
|
538 |
enum ArrayElementSize { |
|
539 |
T_BOOLEAN_aelem_bytes = 1, |
|
540 |
T_CHAR_aelem_bytes = 2, |
|
541 |
T_FLOAT_aelem_bytes = 4, |
|
542 |
T_DOUBLE_aelem_bytes = 8, |
|
543 |
T_BYTE_aelem_bytes = 1, |
|
544 |
T_SHORT_aelem_bytes = 2, |
|
545 |
T_INT_aelem_bytes = 4, |
|
546 |
T_LONG_aelem_bytes = 8, |
|
547 |
#ifdef _LP64 |
|
548 |
T_OBJECT_aelem_bytes = 8, |
|
549 |
T_ARRAY_aelem_bytes = 8, |
|
550 |
#else |
|
551 |
T_OBJECT_aelem_bytes = 4, |
|
552 |
T_ARRAY_aelem_bytes = 4, |
|
553 |
#endif |
|
360
21d113ecbf6a
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diff
changeset
|
554 |
T_NARROWOOP_aelem_bytes = 4, |
1 | 555 |
T_VOID_aelem_bytes = 0 |
556 |
}; |
|
557 |
||
202
dc13bf0e5d5d
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
1
diff
changeset
|
558 |
extern int _type2aelembytes[T_CONFLICT+1]; // maps a BasicType to nof bytes used by its array element |
dc13bf0e5d5d
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
1
diff
changeset
|
559 |
#ifdef ASSERT |
dc13bf0e5d5d
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
1
diff
changeset
|
560 |
extern int type2aelembytes(BasicType t, bool allow_address = false); // asserts |
dc13bf0e5d5d
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
1
diff
changeset
|
561 |
#else |
6433 | 562 |
inline int type2aelembytes(BasicType t, bool allow_address = false) { return _type2aelembytes[t]; } |
202
dc13bf0e5d5d
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
1
diff
changeset
|
563 |
#endif |
1 | 564 |
|
565 |
||
566 |
// JavaValue serves as a container for arbitrary Java values. |
|
567 |
||
568 |
class JavaValue { |
|
569 |
||
570 |
public: |
|
571 |
typedef union JavaCallValue { |
|
572 |
jfloat f; |
|
573 |
jdouble d; |
|
574 |
jint i; |
|
575 |
jlong l; |
|
576 |
jobject h; |
|
577 |
} JavaCallValue; |
|
578 |
||
579 |
private: |
|
580 |
BasicType _type; |
|
581 |
JavaCallValue _value; |
|
582 |
||
583 |
public: |
|
584 |
JavaValue(BasicType t = T_ILLEGAL) { _type = t; } |
|
585 |
||
586 |
JavaValue(jfloat value) { |
|
587 |
_type = T_FLOAT; |
|
588 |
_value.f = value; |
|
589 |
} |
|
590 |
||
591 |
JavaValue(jdouble value) { |
|
592 |
_type = T_DOUBLE; |
|
593 |
_value.d = value; |
|
594 |
} |
|
595 |
||
596 |
jfloat get_jfloat() const { return _value.f; } |
|
597 |
jdouble get_jdouble() const { return _value.d; } |
|
598 |
jint get_jint() const { return _value.i; } |
|
599 |
jlong get_jlong() const { return _value.l; } |
|
600 |
jobject get_jobject() const { return _value.h; } |
|
601 |
JavaCallValue* get_value_addr() { return &_value; } |
|
602 |
BasicType get_type() const { return _type; } |
|
603 |
||
604 |
void set_jfloat(jfloat f) { _value.f = f;} |
|
605 |
void set_jdouble(jdouble d) { _value.d = d;} |
|
606 |
void set_jint(jint i) { _value.i = i;} |
|
607 |
void set_jlong(jlong l) { _value.l = l;} |
|
608 |
void set_jobject(jobject h) { _value.h = h;} |
|
609 |
void set_type(BasicType t) { _type = t; } |
|
610 |
||
611 |
jboolean get_jboolean() const { return (jboolean) (_value.i);} |
|
612 |
jbyte get_jbyte() const { return (jbyte) (_value.i);} |
|
613 |
jchar get_jchar() const { return (jchar) (_value.i);} |
|
614 |
jshort get_jshort() const { return (jshort) (_value.i);} |
|
615 |
||
616 |
}; |
|
617 |
||
618 |
||
619 |
#define STACK_BIAS 0 |
|
620 |
// V9 Sparc CPU's running in 64 Bit mode use a stack bias of 7ff |
|
621 |
// in order to extend the reach of the stack pointer. |
|
622 |
#if defined(SPARC) && defined(_LP64) |
|
623 |
#undef STACK_BIAS |
|
624 |
#define STACK_BIAS 0x7ff |
|
625 |
#endif |
|
626 |
||
627 |
||
628 |
// TosState describes the top-of-stack state before and after the execution of |
|
629 |
// a bytecode or method. The top-of-stack value may be cached in one or more CPU |
|
630 |
// registers. The TosState corresponds to the 'machine represention' of this cached |
|
631 |
// value. There's 4 states corresponding to the JAVA types int, long, float & double |
|
632 |
// as well as a 5th state in case the top-of-stack value is actually on the top |
|
633 |
// of stack (in memory) and thus not cached. The atos state corresponds to the itos |
|
634 |
// state when it comes to machine representation but is used separately for (oop) |
|
635 |
// type specific operations (e.g. verification code). |
|
636 |
||
637 |
enum TosState { // describes the tos cache contents |
|
638 |
btos = 0, // byte, bool tos cached |
|
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
639 |
ctos = 1, // char tos cached |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
640 |
stos = 2, // short tos cached |
1 | 641 |
itos = 3, // int tos cached |
642 |
ltos = 4, // long tos cached |
|
643 |
ftos = 5, // float tos cached |
|
644 |
dtos = 6, // double tos cached |
|
645 |
atos = 7, // object cached |
|
646 |
vtos = 8, // tos not cached |
|
647 |
number_of_states, |
|
648 |
ilgl // illegal state: should not occur |
|
649 |
}; |
|
650 |
||
651 |
||
652 |
inline TosState as_TosState(BasicType type) { |
|
653 |
switch (type) { |
|
654 |
case T_BYTE : return btos; |
|
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
655 |
case T_BOOLEAN: return btos; // FIXME: Add ztos |
1 | 656 |
case T_CHAR : return ctos; |
657 |
case T_SHORT : return stos; |
|
658 |
case T_INT : return itos; |
|
659 |
case T_LONG : return ltos; |
|
660 |
case T_FLOAT : return ftos; |
|
661 |
case T_DOUBLE : return dtos; |
|
662 |
case T_VOID : return vtos; |
|
663 |
case T_ARRAY : // fall through |
|
664 |
case T_OBJECT : return atos; |
|
665 |
} |
|
666 |
return ilgl; |
|
667 |
} |
|
668 |
||
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
669 |
inline BasicType as_BasicType(TosState state) { |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
670 |
switch (state) { |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
671 |
//case ztos: return T_BOOLEAN;//FIXME |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
672 |
case btos : return T_BYTE; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
673 |
case ctos : return T_CHAR; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
674 |
case stos : return T_SHORT; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
675 |
case itos : return T_INT; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
676 |
case ltos : return T_LONG; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
677 |
case ftos : return T_FLOAT; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
678 |
case dtos : return T_DOUBLE; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
679 |
case atos : return T_OBJECT; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
680 |
case vtos : return T_VOID; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
681 |
} |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
682 |
return T_ILLEGAL; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
683 |
} |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
684 |
|
1 | 685 |
|
686 |
// Helper function to convert BasicType info into TosState |
|
687 |
// Note: Cannot define here as it uses global constant at the time being. |
|
688 |
TosState as_TosState(BasicType type); |
|
689 |
||
690 |
||
691 |
// ReferenceType is used to distinguish between java/lang/ref/Reference subclasses |
|
692 |
||
693 |
enum ReferenceType { |
|
694 |
REF_NONE, // Regular class |
|
695 |
REF_OTHER, // Subclass of java/lang/ref/Reference, but not subclass of one of the classes below |
|
696 |
REF_SOFT, // Subclass of java/lang/ref/SoftReference |
|
697 |
REF_WEAK, // Subclass of java/lang/ref/WeakReference |
|
698 |
REF_FINAL, // Subclass of java/lang/ref/FinalReference |
|
699 |
REF_PHANTOM // Subclass of java/lang/ref/PhantomReference |
|
700 |
}; |
|
701 |
||
702 |
||
703 |
// JavaThreadState keeps track of which part of the code a thread is executing in. This |
|
704 |
// information is needed by the safepoint code. |
|
705 |
// |
|
706 |
// There are 4 essential states: |
|
707 |
// |
|
708 |
// _thread_new : Just started, but not executed init. code yet (most likely still in OS init code) |
|
709 |
// _thread_in_native : In native code. This is a safepoint region, since all oops will be in jobject handles |
|
710 |
// _thread_in_vm : Executing in the vm |
|
711 |
// _thread_in_Java : Executing either interpreted or compiled Java code (or could be in a stub) |
|
712 |
// |
|
713 |
// Each state has an associated xxxx_trans state, which is an intermediate state used when a thread is in |
|
714 |
// a transition from one state to another. These extra states makes it possible for the safepoint code to |
|
715 |
// handle certain thread_states without having to suspend the thread - making the safepoint code faster. |
|
716 |
// |
|
717 |
// Given a state, the xxx_trans state can always be found by adding 1. |
|
718 |
// |
|
719 |
enum JavaThreadState { |
|
720 |
_thread_uninitialized = 0, // should never happen (missing initialization) |
|
721 |
_thread_new = 2, // just starting up, i.e., in process of being initialized |
|
722 |
_thread_new_trans = 3, // corresponding transition state (not used, included for completness) |
|
723 |
_thread_in_native = 4, // running in native code |
|
724 |
_thread_in_native_trans = 5, // corresponding transition state |
|
725 |
_thread_in_vm = 6, // running in VM |
|
726 |
_thread_in_vm_trans = 7, // corresponding transition state |
|
727 |
_thread_in_Java = 8, // running in Java or in stub code |
|
728 |
_thread_in_Java_trans = 9, // corresponding transition state (not used, included for completness) |
|
729 |
_thread_blocked = 10, // blocked in vm |
|
730 |
_thread_blocked_trans = 11, // corresponding transition state |
|
731 |
_thread_max_state = 12 // maximum thread state+1 - used for statistics allocation |
|
732 |
}; |
|
733 |
||
734 |
||
735 |
// Handy constants for deciding which compiler mode to use. |
|
736 |
enum MethodCompilation { |
|
737 |
InvocationEntryBci = -1, // i.e., not a on-stack replacement compilation |
|
738 |
InvalidOSREntryBci = -2 |
|
739 |
}; |
|
740 |
||
741 |
// Enumeration to distinguish tiers of compilation |
|
742 |
enum CompLevel { |
|
6453 | 743 |
CompLevel_any = -1, |
744 |
CompLevel_all = -1, |
|
745 |
CompLevel_none = 0, // Interpreter |
|
746 |
CompLevel_simple = 1, // C1 |
|
747 |
CompLevel_limited_profile = 2, // C1, invocation & backedge counters |
|
748 |
CompLevel_full_profile = 3, // C1, invocation & backedge counters + mdo |
|
749 |
CompLevel_full_optimization = 4, // C2 |
|
1 | 750 |
|
6453 | 751 |
#if defined(COMPILER2) |
752 |
CompLevel_highest_tier = CompLevel_full_optimization, // pure C2 and tiered |
|
753 |
#elif defined(COMPILER1) |
|
754 |
CompLevel_highest_tier = CompLevel_simple, // pure C1 |
|
1 | 755 |
#else |
6453 | 756 |
CompLevel_highest_tier = CompLevel_none, |
757 |
#endif |
|
758 |
||
759 |
#if defined(TIERED) |
|
760 |
CompLevel_initial_compile = CompLevel_full_profile // tiered |
|
761 |
#elif defined(COMPILER1) |
|
762 |
CompLevel_initial_compile = CompLevel_simple // pure C1 |
|
763 |
#elif defined(COMPILER2) |
|
764 |
CompLevel_initial_compile = CompLevel_full_optimization // pure C2 |
|
765 |
#else |
|
766 |
CompLevel_initial_compile = CompLevel_none |
|
767 |
#endif |
|
1 | 768 |
}; |
769 |
||
6453 | 770 |
inline bool is_c1_compile(int comp_level) { |
771 |
return comp_level > CompLevel_none && comp_level < CompLevel_full_optimization; |
|
1 | 772 |
} |
6453 | 773 |
|
774 |
inline bool is_c2_compile(int comp_level) { |
|
1 | 775 |
return comp_level == CompLevel_full_optimization; |
776 |
} |
|
6453 | 777 |
|
1 | 778 |
inline bool is_highest_tier_compile(int comp_level) { |
779 |
return comp_level == CompLevel_highest_tier; |
|
780 |
} |
|
781 |
||
782 |
//---------------------------------------------------------------------------------------------------- |
|
783 |
// 'Forward' declarations of frequently used classes |
|
784 |
// (in order to reduce interface dependencies & reduce |
|
785 |
// number of unnecessary compilations after changes) |
|
786 |
||
787 |
class symbolTable; |
|
788 |
class ClassFileStream; |
|
789 |
||
790 |
class Event; |
|
791 |
||
792 |
class Thread; |
|
793 |
class VMThread; |
|
794 |
class JavaThread; |
|
795 |
class Threads; |
|
796 |
||
797 |
class VM_Operation; |
|
798 |
class VMOperationQueue; |
|
799 |
||
800 |
class CodeBlob; |
|
801 |
class nmethod; |
|
802 |
class OSRAdapter; |
|
803 |
class I2CAdapter; |
|
804 |
class C2IAdapter; |
|
805 |
class CompiledIC; |
|
806 |
class relocInfo; |
|
807 |
class ScopeDesc; |
|
808 |
class PcDesc; |
|
809 |
||
810 |
class Recompiler; |
|
811 |
class Recompilee; |
|
812 |
class RecompilationPolicy; |
|
813 |
class RFrame; |
|
814 |
class CompiledRFrame; |
|
815 |
class InterpretedRFrame; |
|
816 |
||
817 |
class frame; |
|
818 |
||
819 |
class vframe; |
|
820 |
class javaVFrame; |
|
821 |
class interpretedVFrame; |
|
822 |
class compiledVFrame; |
|
823 |
class deoptimizedVFrame; |
|
824 |
class externalVFrame; |
|
825 |
class entryVFrame; |
|
826 |
||
827 |
class RegisterMap; |
|
828 |
||
829 |
class Mutex; |
|
830 |
class Monitor; |
|
831 |
class BasicLock; |
|
832 |
class BasicObjectLock; |
|
833 |
||
834 |
class PeriodicTask; |
|
835 |
||
836 |
class JavaCallWrapper; |
|
837 |
||
838 |
class oopDesc; |
|
839 |
||
840 |
class NativeCall; |
|
841 |
||
842 |
class zone; |
|
843 |
||
844 |
class StubQueue; |
|
845 |
||
846 |
class outputStream; |
|
847 |
||
848 |
class ResourceArea; |
|
849 |
||
850 |
class DebugInformationRecorder; |
|
851 |
class ScopeValue; |
|
852 |
class CompressedStream; |
|
853 |
class DebugInfoReadStream; |
|
854 |
class DebugInfoWriteStream; |
|
855 |
class LocationValue; |
|
856 |
class ConstantValue; |
|
857 |
class IllegalValue; |
|
858 |
||
859 |
class PrivilegedElement; |
|
860 |
class MonitorArray; |
|
861 |
||
862 |
class MonitorInfo; |
|
863 |
||
864 |
class OffsetClosure; |
|
865 |
class OopMapCache; |
|
866 |
class InterpreterOopMap; |
|
867 |
class OopMapCacheEntry; |
|
868 |
class OSThread; |
|
869 |
||
870 |
typedef int (*OSThreadStartFunc)(void*); |
|
871 |
||
872 |
class Space; |
|
873 |
||
874 |
class JavaValue; |
|
875 |
class methodHandle; |
|
876 |
class JavaCallArguments; |
|
877 |
||
878 |
// Basic support for errors (general debug facilities not defined at this point fo the include phase) |
|
879 |
||
880 |
extern void basic_fatal(const char* msg); |
|
881 |
||
882 |
||
883 |
//---------------------------------------------------------------------------------------------------- |
|
884 |
// Special constants for debugging |
|
885 |
||
886 |
const jint badInt = -3; // generic "bad int" value |
|
887 |
const long badAddressVal = -2; // generic "bad address" value |
|
888 |
const long badOopVal = -1; // generic "bad oop" value |
|
889 |
const intptr_t badHeapOopVal = (intptr_t) CONST64(0x2BAD4B0BBAADBABE); // value used to zap heap after GC |
|
890 |
const int badHandleValue = 0xBC; // value used to zap vm handle area |
|
891 |
const int badResourceValue = 0xAB; // value used to zap resource area |
|
892 |
const int freeBlockPad = 0xBA; // value used to pad freed blocks. |
|
893 |
const int uninitBlockPad = 0xF1; // value used to zap newly malloc'd blocks. |
|
894 |
const intptr_t badJNIHandleVal = (intptr_t) CONST64(0xFEFEFEFEFEFEFEFE); // value used to zap jni handle area |
|
895 |
const juint badHeapWordVal = 0xBAADBABE; // value used to zap heap after GC |
|
896 |
const int badCodeHeapNewVal= 0xCC; // value used to zap Code heap at allocation |
|
897 |
const int badCodeHeapFreeVal = 0xDD; // value used to zap Code heap at deallocation |
|
898 |
||
899 |
||
900 |
// (These must be implemented as #defines because C++ compilers are |
|
901 |
// not obligated to inline non-integral constants!) |
|
902 |
#define badAddress ((address)::badAddressVal) |
|
903 |
#define badOop ((oop)::badOopVal) |
|
904 |
#define badHeapWord (::badHeapWordVal) |
|
905 |
#define badJNIHandle ((oop)::badJNIHandleVal) |
|
906 |
||
5076
8b74a4b60b31
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
4902
diff
changeset
|
907 |
// 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
|
908 |
#define TASKQUEUE_SIZE (NOT_LP64(1<<14) LP64_ONLY(1<<17)) |
1 | 909 |
|
910 |
//---------------------------------------------------------------------------------------------------- |
|
911 |
// Utility functions for bitfield manipulations |
|
912 |
||
913 |
const intptr_t AllBits = ~0; // all bits set in a word |
|
914 |
const intptr_t NoBits = 0; // no bits set in a word |
|
915 |
const jlong NoLongBits = 0; // no bits set in a long |
|
916 |
const intptr_t OneBit = 1; // only right_most bit set in a word |
|
917 |
||
918 |
// get a word with the n.th or the right-most or left-most n bits set |
|
919 |
// (note: #define used only so that they can be used in enum constant definitions) |
|
920 |
#define nth_bit(n) (n >= BitsPerWord ? 0 : OneBit << (n)) |
|
921 |
#define right_n_bits(n) (nth_bit(n) - 1) |
|
922 |
#define left_n_bits(n) (right_n_bits(n) << (n >= BitsPerWord ? 0 : (BitsPerWord - n))) |
|
923 |
||
924 |
// bit-operations using a mask m |
|
925 |
inline void set_bits (intptr_t& x, intptr_t m) { x |= m; } |
|
926 |
inline void clear_bits (intptr_t& x, intptr_t m) { x &= ~m; } |
|
927 |
inline intptr_t mask_bits (intptr_t x, intptr_t m) { return x & m; } |
|
928 |
inline jlong mask_long_bits (jlong x, jlong m) { return x & m; } |
|
929 |
inline bool mask_bits_are_true (intptr_t flags, intptr_t mask) { return (flags & mask) == mask; } |
|
930 |
||
931 |
// bit-operations using the n.th bit |
|
932 |
inline void set_nth_bit(intptr_t& x, int n) { set_bits (x, nth_bit(n)); } |
|
933 |
inline void clear_nth_bit(intptr_t& x, int n) { clear_bits(x, nth_bit(n)); } |
|
934 |
inline bool is_set_nth_bit(intptr_t x, int n) { return mask_bits (x, nth_bit(n)) != NoBits; } |
|
935 |
||
936 |
// returns the bitfield of x starting at start_bit_no with length field_length (no sign-extension!) |
|
937 |
inline intptr_t bitfield(intptr_t x, int start_bit_no, int field_length) { |
|
938 |
return mask_bits(x >> start_bit_no, right_n_bits(field_length)); |
|
939 |
} |
|
940 |
||
941 |
||
942 |
//---------------------------------------------------------------------------------------------------- |
|
943 |
// Utility functions for integers |
|
944 |
||
945 |
// Avoid use of global min/max macros which may cause unwanted double |
|
946 |
// evaluation of arguments. |
|
947 |
#ifdef max |
|
948 |
#undef max |
|
949 |
#endif |
|
950 |
||
951 |
#ifdef min |
|
952 |
#undef min |
|
953 |
#endif |
|
954 |
||
955 |
#define max(a,b) Do_not_use_max_use_MAX2_instead |
|
956 |
#define min(a,b) Do_not_use_min_use_MIN2_instead |
|
957 |
||
958 |
// It is necessary to use templates here. Having normal overloaded |
|
959 |
// functions does not work because it is necessary to provide both 32- |
|
960 |
// and 64-bit overloaded functions, which does not work, and having |
|
961 |
// explicitly-typed versions of these routines (i.e., MAX2I, MAX2L) |
|
962 |
// will be even more error-prone than macros. |
|
963 |
template<class T> inline T MAX2(T a, T b) { return (a > b) ? a : b; } |
|
964 |
template<class T> inline T MIN2(T a, T b) { return (a < b) ? a : b; } |
|
965 |
template<class T> inline T MAX3(T a, T b, T c) { return MAX2(MAX2(a, b), c); } |
|
966 |
template<class T> inline T MIN3(T a, T b, T c) { return MIN2(MIN2(a, b), c); } |
|
967 |
template<class T> inline T MAX4(T a, T b, T c, T d) { return MAX2(MAX3(a, b, c), d); } |
|
968 |
template<class T> inline T MIN4(T a, T b, T c, T d) { return MIN2(MIN3(a, b, c), d); } |
|
969 |
||
970 |
template<class T> inline T ABS(T x) { return (x > 0) ? x : -x; } |
|
971 |
||
972 |
// true if x is a power of 2, false otherwise |
|
973 |
inline bool is_power_of_2(intptr_t x) { |
|
974 |
return ((x != NoBits) && (mask_bits(x, x - 1) == NoBits)); |
|
975 |
} |
|
976 |
||
977 |
// long version of is_power_of_2 |
|
978 |
inline bool is_power_of_2_long(jlong x) { |
|
979 |
return ((x != NoLongBits) && (mask_long_bits(x, x - 1) == NoLongBits)); |
|
980 |
} |
|
981 |
||
982 |
//* largest i such that 2^i <= x |
|
983 |
// A negative value of 'x' will return '31' |
|
984 |
inline int log2_intptr(intptr_t x) { |
|
985 |
int i = -1; |
|
986 |
uintptr_t p = 1; |
|
987 |
while (p != 0 && p <= (uintptr_t)x) { |
|
988 |
// p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) |
|
989 |
i++; p *= 2; |
|
990 |
} |
|
991 |
// p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) |
|
2131 | 992 |
// (if p = 0 then overflow occurred and i = 31) |
1 | 993 |
return i; |
994 |
} |
|
995 |
||
996 |
//* largest i such that 2^i <= x |
|
997 |
// A negative value of 'x' will return '63' |
|
998 |
inline int log2_long(jlong x) { |
|
999 |
int i = -1; |
|
1000 |
julong p = 1; |
|
1001 |
while (p != 0 && p <= (julong)x) { |
|
1002 |
// p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) |
|
1003 |
i++; p *= 2; |
|
1004 |
} |
|
1005 |
// p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) |
|
2131 | 1006 |
// (if p = 0 then overflow occurred and i = 63) |
1 | 1007 |
return i; |
1008 |
} |
|
1009 |
||
1010 |
//* the argument must be exactly a power of 2 |
|
1011 |
inline int exact_log2(intptr_t x) { |
|
1012 |
#ifdef ASSERT |
|
1013 |
if (!is_power_of_2(x)) basic_fatal("x must be a power of 2"); |
|
1014 |
#endif |
|
1015 |
return log2_intptr(x); |
|
1016 |
} |
|
1017 |
||
2032
1e27661bff28
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
2023
diff
changeset
|
1018 |
//* 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
|
1019 |
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
|
1020 |
#ifdef ASSERT |
1e27661bff28
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
2023
diff
changeset
|
1021 |
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
|
1022 |
#endif |
1e27661bff28
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
2023
diff
changeset
|
1023 |
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
|
1024 |
} |
1e27661bff28
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
2023
diff
changeset
|
1025 |
|
1 | 1026 |
|
1027 |
// returns integer round-up to the nearest multiple of s (s must be a power of two) |
|
1028 |
inline intptr_t round_to(intptr_t x, uintx s) { |
|
1029 |
#ifdef ASSERT |
|
1030 |
if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); |
|
1031 |
#endif |
|
1032 |
const uintx m = s - 1; |
|
1033 |
return mask_bits(x + m, ~m); |
|
1034 |
} |
|
1035 |
||
1036 |
// returns integer round-down to the nearest multiple of s (s must be a power of two) |
|
1037 |
inline intptr_t round_down(intptr_t x, uintx s) { |
|
1038 |
#ifdef ASSERT |
|
1039 |
if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); |
|
1040 |
#endif |
|
1041 |
const uintx m = s - 1; |
|
1042 |
return mask_bits(x, ~m); |
|
1043 |
} |
|
1044 |
||
1045 |
||
1046 |
inline bool is_odd (intx x) { return x & 1; } |
|
1047 |
inline bool is_even(intx x) { return !is_odd(x); } |
|
1048 |
||
1049 |
// "to" should be greater than "from." |
|
1050 |
inline intx byte_size(void* from, void* to) { |
|
1051 |
return (address)to - (address)from; |
|
1052 |
} |
|
1053 |
||
1054 |
//---------------------------------------------------------------------------------------------------- |
|
1055 |
// Avoid non-portable casts with these routines (DEPRECATED) |
|
1056 |
||
1057 |
// NOTE: USE Bytes class INSTEAD WHERE POSSIBLE |
|
1058 |
// Bytes is optimized machine-specifically and may be much faster then the portable routines below. |
|
1059 |
||
1060 |
// Given sequence of four bytes, build into a 32-bit word |
|
1061 |
// following the conventions used in class files. |
|
1062 |
// On the 386, this could be realized with a simple address cast. |
|
1063 |
// |
|
1064 |
||
1065 |
// This routine takes eight bytes: |
|
1066 |
inline u8 build_u8_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { |
|
6459
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|
1067 |
return (( u8(c1) << 56 ) & ( u8(0xff) << 56 )) |
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|
1068 |
| (( u8(c2) << 48 ) & ( u8(0xff) << 48 )) |
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|
1069 |
| (( u8(c3) << 40 ) & ( u8(0xff) << 40 )) |
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|
1070 |
| (( u8(c4) << 32 ) & ( u8(0xff) << 32 )) |
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|
1071 |
| (( u8(c5) << 24 ) & ( u8(0xff) << 24 )) |
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|
1072 |
| (( u8(c6) << 16 ) & ( u8(0xff) << 16 )) |
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|
1073 |
| (( u8(c7) << 8 ) & ( u8(0xff) << 8 )) |
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|
1074 |
| (( u8(c8) << 0 ) & ( u8(0xff) << 0 )); |
1 | 1075 |
} |
1076 |
||
1077 |
// This routine takes four bytes: |
|
1078 |
inline u4 build_u4_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { |
|
6459
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|
1079 |
return (( u4(c1) << 24 ) & 0xff000000) |
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|
1080 |
| (( u4(c2) << 16 ) & 0x00ff0000) |
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|
1081 |
| (( u4(c3) << 8 ) & 0x0000ff00) |
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|
1082 |
| (( u4(c4) << 0 ) & 0x000000ff); |
1 | 1083 |
} |
1084 |
||
1085 |
// And this one works if the four bytes are contiguous in memory: |
|
1086 |
inline u4 build_u4_from( u1* p ) { |
|
1087 |
return build_u4_from( p[0], p[1], p[2], p[3] ); |
|
1088 |
} |
|
1089 |
||
1090 |
// Ditto for two-byte ints: |
|
1091 |
inline u2 build_u2_from( u1 c1, u1 c2 ) { |
|
6459
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|
1092 |
return u2((( u2(c1) << 8 ) & 0xff00) |
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|
1093 |
| (( u2(c2) << 0 ) & 0x00ff)); |
1 | 1094 |
} |
1095 |
||
1096 |
// And this one works if the two bytes are contiguous in memory: |
|
1097 |
inline u2 build_u2_from( u1* p ) { |
|
1098 |
return build_u2_from( p[0], p[1] ); |
|
1099 |
} |
|
1100 |
||
1101 |
// Ditto for floats: |
|
1102 |
inline jfloat build_float_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { |
|
1103 |
u4 u = build_u4_from( c1, c2, c3, c4 ); |
|
1104 |
return *(jfloat*)&u; |
|
1105 |
} |
|
1106 |
||
1107 |
inline jfloat build_float_from( u1* p ) { |
|
1108 |
u4 u = build_u4_from( p ); |
|
1109 |
return *(jfloat*)&u; |
|
1110 |
} |
|
1111 |
||
1112 |
||
1113 |
// now (64-bit) longs |
|
1114 |
||
1115 |
inline jlong build_long_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { |
|
6459
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|
1116 |
return (( jlong(c1) << 56 ) & ( jlong(0xff) << 56 )) |
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|
1117 |
| (( jlong(c2) << 48 ) & ( jlong(0xff) << 48 )) |
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|
1118 |
| (( jlong(c3) << 40 ) & ( jlong(0xff) << 40 )) |
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|
1119 |
| (( jlong(c4) << 32 ) & ( jlong(0xff) << 32 )) |
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|
1120 |
| (( jlong(c5) << 24 ) & ( jlong(0xff) << 24 )) |
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|
1121 |
| (( jlong(c6) << 16 ) & ( jlong(0xff) << 16 )) |
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|
1122 |
| (( jlong(c7) << 8 ) & ( jlong(0xff) << 8 )) |
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|
1123 |
| (( jlong(c8) << 0 ) & ( jlong(0xff) << 0 )); |
1 | 1124 |
} |
1125 |
||
1126 |
inline jlong build_long_from( u1* p ) { |
|
1127 |
return build_long_from( p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7] ); |
|
1128 |
} |
|
1129 |
||
1130 |
||
1131 |
// Doubles, too! |
|
1132 |
inline jdouble build_double_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { |
|
1133 |
jlong u = build_long_from( c1, c2, c3, c4, c5, c6, c7, c8 ); |
|
1134 |
return *(jdouble*)&u; |
|
1135 |
} |
|
1136 |
||
1137 |
inline jdouble build_double_from( u1* p ) { |
|
1138 |
jlong u = build_long_from( p ); |
|
1139 |
return *(jdouble*)&u; |
|
1140 |
} |
|
1141 |
||
1142 |
||
1143 |
// Portable routines to go the other way: |
|
1144 |
||
1145 |
inline void explode_short_to( u2 x, u1& c1, u1& c2 ) { |
|
1146 |
c1 = u1(x >> 8); |
|
1147 |
c2 = u1(x); |
|
1148 |
} |
|
1149 |
||
1150 |
inline void explode_short_to( u2 x, u1* p ) { |
|
1151 |
explode_short_to( x, p[0], p[1]); |
|
1152 |
} |
|
1153 |
||
1154 |
inline void explode_int_to( u4 x, u1& c1, u1& c2, u1& c3, u1& c4 ) { |
|
1155 |
c1 = u1(x >> 24); |
|
1156 |
c2 = u1(x >> 16); |
|
1157 |
c3 = u1(x >> 8); |
|
1158 |
c4 = u1(x); |
|
1159 |
} |
|
1160 |
||
1161 |
inline void explode_int_to( u4 x, u1* p ) { |
|
1162 |
explode_int_to( x, p[0], p[1], p[2], p[3]); |
|
1163 |
} |
|
1164 |
||
1165 |
||
1166 |
// Pack and extract shorts to/from ints: |
|
1167 |
||
1168 |
inline int extract_low_short_from_int(jint x) { |
|
1169 |
return x & 0xffff; |
|
1170 |
} |
|
1171 |
||
1172 |
inline int extract_high_short_from_int(jint x) { |
|
1173 |
return (x >> 16) & 0xffff; |
|
1174 |
} |
|
1175 |
||
1176 |
inline int build_int_from_shorts( jushort low, jushort high ) { |
|
1177 |
return ((int)((unsigned int)high << 16) | (unsigned int)low); |
|
1178 |
} |
|
1179 |
||
1180 |
// Printf-style formatters for fixed- and variable-width types as pointers and |
|
1181 |
// integers. |
|
1182 |
// |
|
1183 |
// Each compiler-specific definitions file (e.g., globalDefinitions_gcc.hpp) |
|
1184 |
// must define the macro FORMAT64_MODIFIER, which is the modifier for '%x' or |
|
1185 |
// '%d' formats to indicate a 64-bit quantity; commonly "l" (in LP64) or "ll" |
|
1186 |
// (in ILP32). |
|
1187 |
||
8680 | 1188 |
#define BOOL_TO_STR(_b_) ((_b_) ? "true" : "false") |
7923 | 1189 |
|
1 | 1190 |
// Format 32-bit quantities. |
1191 |
#define INT32_FORMAT "%d" |
|
1192 |
#define UINT32_FORMAT "%u" |
|
1193 |
#define INT32_FORMAT_W(width) "%" #width "d" |
|
1194 |
#define UINT32_FORMAT_W(width) "%" #width "u" |
|
1195 |
||
1196 |
#define PTR32_FORMAT "0x%08x" |
|
1197 |
||
1198 |
// Format 64-bit quantities. |
|
1199 |
#define INT64_FORMAT "%" FORMAT64_MODIFIER "d" |
|
1200 |
#define UINT64_FORMAT "%" FORMAT64_MODIFIER "u" |
|
1201 |
#define PTR64_FORMAT "0x%016" FORMAT64_MODIFIER "x" |
|
1202 |
||
1203 |
#define INT64_FORMAT_W(width) "%" #width FORMAT64_MODIFIER "d" |
|
1204 |
#define UINT64_FORMAT_W(width) "%" #width FORMAT64_MODIFIER "u" |
|
1205 |
||
1206 |
// Format macros that allow the field width to be specified. The width must be |
|
1207 |
// a string literal (e.g., "8") or a macro that evaluates to one. |
|
1208 |
#ifdef _LP64 |
|
1889
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|
1209 |
#define UINTX_FORMAT_W(width) UINT64_FORMAT_W(width) |
1 | 1210 |
#define SSIZE_FORMAT_W(width) INT64_FORMAT_W(width) |
1211 |
#define SIZE_FORMAT_W(width) UINT64_FORMAT_W(width) |
|
1212 |
#else |
|
1889
24b003a6fe46
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diff
changeset
|
1213 |
#define UINTX_FORMAT_W(width) UINT32_FORMAT_W(width) |
1 | 1214 |
#define SSIZE_FORMAT_W(width) INT32_FORMAT_W(width) |
1215 |
#define SIZE_FORMAT_W(width) UINT32_FORMAT_W(width) |
|
1216 |
#endif // _LP64 |
|
1217 |
||
1218 |
// Format pointers and size_t (or size_t-like integer types) which change size |
|
1889
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6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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diff
changeset
|
1219 |
// between 32- and 64-bit. The pointer format theoretically should be "%p", |
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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parents:
1393
diff
changeset
|
1220 |
// however, it has different output on different platforms. On Windows, the data |
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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parents:
1393
diff
changeset
|
1221 |
// will be padded with zeros automatically. On Solaris, we can use "%016p" & |
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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diff
changeset
|
1222 |
// "%08p" on 64 bit & 32 bit platforms to make the data padded with extra zeros. |
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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diff
changeset
|
1223 |
// On Linux, "%016p" or "%08p" is not be allowed, at least on the latest GCC |
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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diff
changeset
|
1224 |
// 4.3.2. So we have to use "%016x" or "%08x" to simulate the printing format. |
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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diff
changeset
|
1225 |
// GCC 4.3.2, however requires the data to be converted to "intptr_t" when |
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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diff
changeset
|
1226 |
// using "%x". |
1 | 1227 |
#ifdef _LP64 |
1228 |
#define PTR_FORMAT PTR64_FORMAT |
|
1229 |
#define UINTX_FORMAT UINT64_FORMAT |
|
1230 |
#define INTX_FORMAT INT64_FORMAT |
|
1231 |
#define SIZE_FORMAT UINT64_FORMAT |
|
1232 |
#define SSIZE_FORMAT INT64_FORMAT |
|
1233 |
#else // !_LP64 |
|
1234 |
#define PTR_FORMAT PTR32_FORMAT |
|
1235 |
#define UINTX_FORMAT UINT32_FORMAT |
|
1236 |
#define INTX_FORMAT INT32_FORMAT |
|
1237 |
#define SIZE_FORMAT UINT32_FORMAT |
|
1238 |
#define SSIZE_FORMAT INT32_FORMAT |
|
1239 |
#endif // _LP64 |
|
1240 |
||
1241 |
#define INTPTR_FORMAT PTR_FORMAT |
|
1242 |
||
1243 |
// Enable zap-a-lot if in debug version. |
|
1244 |
||
1245 |
# ifdef ASSERT |
|
1246 |
# ifdef COMPILER2 |
|
1247 |
# define ENABLE_ZAP_DEAD_LOCALS |
|
1248 |
#endif /* COMPILER2 */ |
|
1249 |
# endif /* ASSERT */ |
|
1250 |
||
1251 |
#define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0])) |
|
7397 | 1252 |
|
1253 |
#endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP |