duke@435: /*
hseigel@4987:  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
coleenp@4037: #include "classfile/altHashing.hpp"
stefank@2314: #include "classfile/javaClasses.hpp"
stefank@2314: #include "oops/oop.inline.hpp"
stefank@2314: #include "runtime/handles.inline.hpp"
stefank@4299: #include "runtime/thread.inline.hpp"
stefank@2314: #include "utilities/copy.hpp"
duke@435: 
duke@435: bool always_do_update_barrier = false;
duke@435: 
duke@435: BarrierSet* oopDesc::_bs = NULL;
duke@435: 
duke@435: void oopDesc::print_on(outputStream* st) const {
duke@435:   if (this == NULL) {
duke@435:     st->print_cr("NULL");
duke@435:   } else {
coleenp@4037:     klass()->oop_print_on(oop(this), st);
duke@435:   }
duke@435: }
duke@435: 
duke@435: void oopDesc::print_address_on(outputStream* st) const {
duke@435:   if (PrintOopAddress) {
jrose@1100:     st->print("{"INTPTR_FORMAT"}", this);
duke@435:   }
duke@435: }
duke@435: 
duke@435: void oopDesc::print()         { print_on(tty);         }
duke@435: 
duke@435: void oopDesc::print_address() { print_address_on(tty); }
duke@435: 
duke@435: char* oopDesc::print_string() {
jrose@1590:   stringStream st;
jrose@1590:   print_on(&st);
jrose@1590:   return st.as_string();
jrose@1590: }
jrose@1590: 
jrose@1590: void oopDesc::print_value() {
jrose@1590:   print_value_on(tty);
duke@435: }
duke@435: 
duke@435: char* oopDesc::print_value_string() {
jrose@1590:   char buf[100];
jrose@1590:   stringStream st(buf, sizeof(buf));
jrose@1590:   print_value_on(&st);
jrose@1590:   return st.as_string();
duke@435: }
duke@435: 
jrose@1590: void oopDesc::print_value_on(outputStream* st) const {
jrose@1590:   oop obj = oop(this);
jrose@1590:   if (this == NULL) {
jrose@1590:     st->print("NULL");
jrose@1590:   } else if (java_lang_String::is_instance(obj)) {
jrose@1590:     java_lang_String::print(obj, st);
jrose@1590:     if (PrintOopAddress) print_address_on(st);
jrose@1590:   } else {
coleenp@4037:     klass()->oop_print_value_on(obj, st);
jrose@1590:   }
jrose@1590: }
jrose@1590: 
duke@435: 
duke@435: void oopDesc::verify_on(outputStream* st) {
duke@435:   if (this != NULL) {
coleenp@4037:     klass()->oop_verify_on(this, st);
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: void oopDesc::verify() {
duke@435:   verify_on(tty);
duke@435: }
duke@435: 
duke@435: intptr_t oopDesc::slow_identity_hash() {
duke@435:   // slow case; we have to acquire the micro lock in order to locate the header
duke@435:   ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY
duke@435:   HandleMark hm;
coleenp@4037:   Handle object(this);
duke@435:   return ObjectSynchronizer::identity_hash_value_for(object);
duke@435: }
duke@435: 
coleenp@4037: // When String table needs to rehash
coleenp@4037: unsigned int oopDesc::new_hash(jint seed) {
hseigel@4987:   EXCEPTION_MARK;
coleenp@4037:   ResourceMark rm;
coleenp@4037:   int length;
hseigel@4987:   jchar* chars = java_lang_String::as_unicode_string(this, length, THREAD);
hseigel@4987:   if (chars != NULL) {
hseigel@4987:     // Use alternate hashing algorithm on the string
hseigel@4987:     return AltHashing::murmur3_32(seed, chars, length);
hseigel@4987:   } else {
hseigel@4987:     vm_exit_out_of_memory(length, "unable to create Unicode strings for String table rehash");
hseigel@4987:     return 0;
hseigel@4987:   }
coleenp@4037: }
coleenp@4037: 
duke@435: VerifyOopClosure VerifyOopClosure::verify_oop;
coleenp@548: 
coleenp@548: void VerifyOopClosure::do_oop(oop* p)       { VerifyOopClosure::do_oop_work(p); }
coleenp@548: void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }