1 /* 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 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 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "classfile/altHashing.hpp" 27 #include "classfile/javaClasses.hpp" 28 #include "oops/oop.inline.hpp" 29 #include "runtime/handles.inline.hpp" 30 #include "utilities/copy.hpp" 31 #ifdef TARGET_OS_FAMILY_linux 32 # include "thread_linux.inline.hpp" 33 #endif 34 #ifdef TARGET_OS_FAMILY_solaris 35 # include "thread_solaris.inline.hpp" 36 #endif 37 #ifdef TARGET_OS_FAMILY_windows 38 # include "thread_windows.inline.hpp" 39 #endif 40 #ifdef TARGET_OS_FAMILY_bsd 41 # include "thread_bsd.inline.hpp" 42 #endif 43 44 bool always_do_update_barrier = false; 45 46 BarrierSet* oopDesc::_bs = NULL; 47 48 void oopDesc::print_on(outputStream* st) const { 49 if (this == NULL) { 50 st->print_cr("NULL"); 51 } else { 52 klass()->oop_print_on(oop(this), st); 53 } 54 } 55 56 void oopDesc::print_address_on(outputStream* st) const { 57 if (PrintOopAddress) { 58 st->print("{"INTPTR_FORMAT"}", this); 59 } 60 } 61 62 void oopDesc::print() { print_on(tty); } 63 64 void oopDesc::print_address() { print_address_on(tty); } 65 66 char* oopDesc::print_string() { 67 stringStream st; 68 print_on(&st); 69 return st.as_string(); 70 } 71 72 void oopDesc::print_value() { 73 print_value_on(tty); 74 } 75 76 char* oopDesc::print_value_string() { 77 char buf[100]; 78 stringStream st(buf, sizeof(buf)); 79 print_value_on(&st); 80 return st.as_string(); 81 } 82 83 void oopDesc::print_value_on(outputStream* st) const { 84 oop obj = oop(this); 85 if (this == NULL) { 86 st->print("NULL"); 87 } else if (java_lang_String::is_instance(obj)) { 88 java_lang_String::print(obj, st); 89 if (PrintOopAddress) print_address_on(st); 90 } else { 91 klass()->oop_print_value_on(obj, st); 92 } 93 } 94 95 96 void oopDesc::verify_on(outputStream* st) { 97 if (this != NULL) { 98 klass()->oop_verify_on(this, st); 99 } 100 } 101 102 103 void oopDesc::verify() { 104 verify_on(tty); 105 } 106 107 intptr_t oopDesc::slow_identity_hash() { 108 // slow case; we have to acquire the micro lock in order to locate the header 109 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY 110 HandleMark hm; 111 Handle object(this); 112 return ObjectSynchronizer::identity_hash_value_for(object); 113 } 114 115 // When String table needs to rehash 116 unsigned int oopDesc::new_hash(jint seed) { 117 ResourceMark rm; 118 int length; 119 jchar* chars = java_lang_String::as_unicode_string(this, length); 120 // Use alternate hashing algorithm on the string 121 return AltHashing::murmur3_32(seed, chars, length); 122 } 123 124 VerifyOopClosure VerifyOopClosure::verify_oop; 125 126 void VerifyOopClosure::do_oop(oop* p) { VerifyOopClosure::do_oop_work(p); } 127 void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }