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annotate src/share/vm/oops/oop.cpp @ 6862:8a5ea0a9ccc4

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7127708: G1: change task num types from int to uint in concurrent mark Summary: Change the type of various task num fields, parameters etc to unsigned and rename them to be more consistent with the other collectors. Code changes were also reviewed by Vitaly Davidovich. Reviewed-by: johnc Contributed-by: Kaushik Srenevasan <kaushik@twitter.com>
author johnc
date Sat, 06 Oct 2012 01:17:44 -0700
parents da91efe96a93
children f34d701e952e
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1 /*
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "classfile/altHashing.hpp"
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27 #include "classfile/javaClasses.hpp"
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28 #include "oops/oop.inline.hpp"
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29 #include "runtime/handles.inline.hpp"
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30 #include "utilities/copy.hpp"
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31 #ifdef TARGET_OS_FAMILY_linux
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32 # include "thread_linux.inline.hpp"
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33 #endif
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34 #ifdef TARGET_OS_FAMILY_solaris
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35 # include "thread_solaris.inline.hpp"
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36 #endif
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37 #ifdef TARGET_OS_FAMILY_windows
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38 # include "thread_windows.inline.hpp"
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39 #endif
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40 #ifdef TARGET_OS_FAMILY_bsd
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41 # include "thread_bsd.inline.hpp"
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42 #endif
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44 bool always_do_update_barrier = false;
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45
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46 BarrierSet* oopDesc::_bs = NULL;
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47
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48 void oopDesc::print_on(outputStream* st) const {
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49 if (this == NULL) {
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50 st->print_cr("NULL");
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51 } else {
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52 klass()->oop_print_on(oop(this), st);
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53 }
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54 }
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55
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56 void oopDesc::print_address_on(outputStream* st) const {
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57 if (PrintOopAddress) {
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58 st->print("{"INTPTR_FORMAT"}", this);
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59 }
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60 }
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61
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62 void oopDesc::print() { print_on(tty); }
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64 void oopDesc::print_address() { print_address_on(tty); }
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65
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66 char* oopDesc::print_string() {
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67 stringStream st;
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68 print_on(&st);
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69 return st.as_string();
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70 }
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71
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72 void oopDesc::print_value() {
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73 print_value_on(tty);
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74 }
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76 char* oopDesc::print_value_string() {
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77 char buf[100];
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78 stringStream st(buf, sizeof(buf));
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79 print_value_on(&st);
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80 return st.as_string();
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81 }
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82
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83 void oopDesc::print_value_on(outputStream* st) const {
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84 oop obj = oop(this);
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85 if (this == NULL) {
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86 st->print("NULL");
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87 } else if (java_lang_String::is_instance(obj)) {
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88 java_lang_String::print(obj, st);
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89 if (PrintOopAddress) print_address_on(st);
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90 } else {
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91 klass()->oop_print_value_on(obj, st);
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92 }
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93 }
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94
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96 void oopDesc::verify_on(outputStream* st) {
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97 if (this != NULL) {
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98 klass()->oop_verify_on(this, st);
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99 }
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100 }
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102
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103 void oopDesc::verify() {
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104 verify_on(tty);
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105 }
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106
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107 intptr_t oopDesc::slow_identity_hash() {
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108 // slow case; we have to acquire the micro lock in order to locate the header
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109 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY
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110 HandleMark hm;
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111 Handle object(this);
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112 return ObjectSynchronizer::identity_hash_value_for(object);
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113 }
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114
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115 // When String table needs to rehash
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116 unsigned int oopDesc::new_hash(jint seed) {
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117 ResourceMark rm;
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118 int length;
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119 jchar* chars = java_lang_String::as_unicode_string(this, length);
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120 // Use alternate hashing algorithm on the string
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121 return AltHashing::murmur3_32(seed, chars, length);
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122 }
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123
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124 VerifyOopClosure VerifyOopClosure::verify_oop;
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125
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126 void VerifyOopClosure::do_oop(oop* p) { VerifyOopClosure::do_oop_work(p); }
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127 void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }