Mercurial > hg > truffle
annotate src/share/vm/interpreter/bytecodeHistogram.cpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
| author | johnc |
|---|---|
| date | Wed, 18 Aug 2010 10:59:06 -0700 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2000, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_bytecodeHistogram.cpp.incl" | |
| 27 | |
| 28 // ------------------------------------------------------------------------------------------------ | |
| 29 // Non-product code | |
| 30 #ifndef PRODUCT | |
| 31 | |
| 32 // Implementation of BytecodeCounter | |
| 33 | |
| 34 int BytecodeCounter::_counter_value = 0; | |
| 35 jlong BytecodeCounter::_reset_time = 0; | |
| 36 | |
| 37 | |
| 38 void BytecodeCounter::reset() { | |
| 39 _counter_value = 0; | |
| 40 _reset_time = os::elapsed_counter(); | |
| 41 } | |
| 42 | |
| 43 | |
| 44 double BytecodeCounter::elapsed_time() { | |
| 45 return (double)(os::elapsed_counter() - _reset_time) / (double)os::elapsed_frequency(); | |
| 46 } | |
| 47 | |
| 48 | |
| 49 double BytecodeCounter::frequency() { | |
| 50 return (double)counter_value() / elapsed_time(); | |
| 51 } | |
| 52 | |
| 53 | |
| 54 void BytecodeCounter::print() { | |
| 55 tty->print_cr( | |
| 56 "%d bytecodes executed in %.1fs (%.3fMHz)", | |
| 57 counter_value(), | |
| 58 elapsed_time(), | |
| 59 frequency() / 1000000.0 | |
| 60 ); | |
| 61 } | |
| 62 | |
| 63 | |
| 64 // Helper class for sorting | |
| 65 | |
| 66 class HistoEntry: public ResourceObj { | |
| 67 private: | |
| 68 int _index; | |
| 69 int _count; | |
| 70 | |
| 71 public: | |
| 72 HistoEntry(int index, int count) { _index = index; _count = count; } | |
| 73 int index() const { return _index; } | |
| 74 int count() const { return _count; } | |
| 75 | |
| 76 static int compare(HistoEntry** x, HistoEntry** y) { return (*x)->count() - (*y)->count(); } | |
| 77 }; | |
| 78 | |
| 79 | |
| 80 // Helper functions | |
| 81 | |
| 82 static GrowableArray<HistoEntry*>* sorted_array(int* array, int length) { | |
| 83 GrowableArray<HistoEntry*>* a = new GrowableArray<HistoEntry*>(length); | |
| 84 int i = length; | |
| 85 while (i-- > 0) a->append(new HistoEntry(i, array[i])); | |
| 86 a->sort(HistoEntry::compare); | |
| 87 return a; | |
| 88 } | |
| 89 | |
| 90 | |
| 91 static int total_count(GrowableArray<HistoEntry*>* profile) { | |
| 92 int sum = 0; | |
| 93 int i = profile->length(); | |
| 94 while (i-- > 0) sum += profile->at(i)->count(); | |
| 95 return sum; | |
| 96 } | |
| 97 | |
| 98 | |
| 99 static const char* name_for(int i) { | |
| 100 return Bytecodes::is_defined(i) ? Bytecodes::name(Bytecodes::cast(i)) : "xxxunusedxxx"; | |
| 101 } | |
| 102 | |
| 103 | |
| 104 // Implementation of BytecodeHistogram | |
| 105 | |
| 106 int BytecodeHistogram::_counters[Bytecodes::number_of_codes]; | |
| 107 | |
| 108 | |
| 109 void BytecodeHistogram::reset() { | |
| 110 int i = Bytecodes::number_of_codes; | |
| 111 while (i-- > 0) _counters[i] = 0; | |
| 112 } | |
| 113 | |
| 114 | |
| 115 void BytecodeHistogram::print(float cutoff) { | |
| 116 ResourceMark rm; | |
| 117 GrowableArray<HistoEntry*>* profile = sorted_array(_counters, Bytecodes::number_of_codes); | |
| 118 // print profile | |
| 119 int tot = total_count(profile); | |
| 120 int abs_sum = 0; | |
| 121 tty->cr(); //0123456789012345678901234567890123456789012345678901234567890123456789 | |
| 122 tty->print_cr("Histogram of %d executed bytecodes:", tot); | |
| 123 tty->cr(); | |
| 124 tty->print_cr(" absolute relative code name"); | |
| 125 tty->print_cr("----------------------------------------------------------------------"); | |
| 126 int i = profile->length(); | |
| 127 while (i-- > 0) { | |
| 128 HistoEntry* e = profile->at(i); | |
| 129 int abs = e->count(); | |
| 130 float rel = abs * 100.0F / tot; | |
| 131 if (cutoff <= rel) { | |
| 132 tty->print_cr("%10d %7.2f%% %02x %s", abs, rel, e->index(), name_for(e->index())); | |
| 133 abs_sum += abs; | |
| 134 } | |
| 135 } | |
| 136 tty->print_cr("----------------------------------------------------------------------"); | |
| 137 float rel_sum = abs_sum * 100.0F / tot; | |
| 138 tty->print_cr("%10d %7.2f%% (cutoff = %.2f%%)", abs_sum, rel_sum, cutoff); | |
| 139 tty->cr(); | |
| 140 } | |
| 141 | |
| 142 | |
| 143 // Implementation of BytecodePairHistogram | |
| 144 | |
| 145 int BytecodePairHistogram::_index; | |
| 146 int BytecodePairHistogram::_counters[BytecodePairHistogram::number_of_pairs]; | |
| 147 | |
| 148 | |
| 149 void BytecodePairHistogram::reset() { | |
| 150 _index = Bytecodes::_nop << log2_number_of_codes; | |
| 151 | |
| 152 int i = number_of_pairs; | |
| 153 while (i-- > 0) _counters[i] = 0; | |
| 154 } | |
| 155 | |
| 156 | |
| 157 void BytecodePairHistogram::print(float cutoff) { | |
| 158 ResourceMark rm; | |
| 159 GrowableArray<HistoEntry*>* profile = sorted_array(_counters, number_of_pairs); | |
| 160 // print profile | |
| 161 int tot = total_count(profile); | |
| 162 int abs_sum = 0; | |
| 163 tty->cr(); //0123456789012345678901234567890123456789012345678901234567890123456789 | |
| 164 tty->print_cr("Histogram of %d executed bytecode pairs:", tot); | |
| 165 tty->cr(); | |
| 166 tty->print_cr(" absolute relative codes 1st bytecode 2nd bytecode"); | |
| 167 tty->print_cr("----------------------------------------------------------------------"); | |
| 168 int i = profile->length(); | |
| 169 while (i-- > 0) { | |
| 170 HistoEntry* e = profile->at(i); | |
| 171 int abs = e->count(); | |
| 172 float rel = abs * 100.0F / tot; | |
| 173 if (cutoff <= rel) { | |
| 174 int c1 = e->index() % number_of_codes; | |
| 175 int c2 = e->index() / number_of_codes; | |
| 176 tty->print_cr("%10d %6.3f%% %02x %02x %-19s %s", abs, rel, c1, c2, name_for(c1), name_for(c2)); | |
| 177 abs_sum += abs; | |
| 178 } | |
| 179 } | |
| 180 tty->print_cr("----------------------------------------------------------------------"); | |
| 181 float rel_sum = abs_sum * 100.0F / tot; | |
| 182 tty->print_cr("%10d %6.3f%% (cutoff = %.3f%%)", abs_sum, rel_sum, cutoff); | |
| 183 tty->cr(); | |
| 184 } | |
| 185 | |
| 186 #endif |