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annotate src/share/vm/oops/oop.cpp @ 10161:746b070f5022

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8011661: Insufficient memory message says "malloc" when sometimes it should say "mmap" Reviewed-by: coleenp, zgu, hseigel
author ccheung
date Tue, 30 Apr 2013 11:56:52 -0700
parents f258c5828eb8
children cd6b3f1a94ff
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1 /*
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2 * Copyright (c) 1997, 2013, 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 "runtime/thread.inline.hpp"
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31 #include "utilities/copy.hpp"
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33 bool always_do_update_barrier = false;
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34
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35 BarrierSet* oopDesc::_bs = NULL;
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36
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37 void oopDesc::print_on(outputStream* st) const {
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38 if (this == NULL) {
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39 st->print_cr("NULL");
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40 } else {
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41 klass()->oop_print_on(oop(this), st);
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42 }
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43 }
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44
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45 void oopDesc::print_address_on(outputStream* st) const {
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46 if (PrintOopAddress) {
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47 st->print("{"INTPTR_FORMAT"}", this);
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48 }
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49 }
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50
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51 void oopDesc::print() { print_on(tty); }
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52
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53 void oopDesc::print_address() { print_address_on(tty); }
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54
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55 char* oopDesc::print_string() {
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56 stringStream st;
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57 print_on(&st);
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58 return st.as_string();
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59 }
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60
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61 void oopDesc::print_value() {
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62 print_value_on(tty);
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63 }
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65 char* oopDesc::print_value_string() {
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66 char buf[100];
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67 stringStream st(buf, sizeof(buf));
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68 print_value_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_on(outputStream* st) const {
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73 oop obj = oop(this);
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74 if (this == NULL) {
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75 st->print("NULL");
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76 } else if (java_lang_String::is_instance(obj)) {
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77 java_lang_String::print(obj, st);
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78 if (PrintOopAddress) print_address_on(st);
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79 } else {
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80 klass()->oop_print_value_on(obj, st);
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81 }
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82 }
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83
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85 void oopDesc::verify_on(outputStream* st) {
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86 if (this != NULL) {
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87 klass()->oop_verify_on(this, st);
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88 }
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89 }
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92 void oopDesc::verify() {
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93 verify_on(tty);
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94 }
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96 intptr_t oopDesc::slow_identity_hash() {
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97 // slow case; we have to acquire the micro lock in order to locate the header
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98 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY
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99 HandleMark hm;
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100 Handle object(this);
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101 return ObjectSynchronizer::identity_hash_value_for(object);
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102 }
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103
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104 // When String table needs to rehash
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105 unsigned int oopDesc::new_hash(jint seed) {
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106 EXCEPTION_MARK;
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107 ResourceMark rm;
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108 int length;
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109 jchar* chars = java_lang_String::as_unicode_string(this, length, THREAD);
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110 if (chars != NULL) {
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111 // Use alternate hashing algorithm on the string
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112 return AltHashing::murmur3_32(seed, chars, length);
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113 } else {
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114 vm_exit_out_of_memory(length, OOM_MALLOC_ERROR, "unable to create Unicode strings for String table rehash");
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115 return 0;
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116 }
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117 }
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118
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119 VerifyOopClosure VerifyOopClosure::verify_oop;
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120
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121 void VerifyOopClosure::do_oop(oop* p) { VerifyOopClosure::do_oop_work(p); }
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122 void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }