hotspot/src/share/vm/oops/oop.cpp
author jiangli
Wed, 06 Jun 2012 14:33:43 -0400
changeset 12937 0032fb2caff6
parent 12379 2cf45b79ce3a
child 13728 882756847a04
permissions -rw-r--r--
7172967: Eliminate constMethod's _method backpointer to methodOop. Summary: Eliminate constMethod's _method backpointer to methodOop, and move the _constant field from methodOop to constMethod. Reviewed-by: roland, bdelsart, kamg
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/*
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 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "classfile/javaClasses.hpp"
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#include "oops/oop.inline.hpp"
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#include "runtime/handles.inline.hpp"
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#include "utilities/copy.hpp"
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#ifdef TARGET_OS_FAMILY_linux
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# include "thread_linux.inline.hpp"
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#endif
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#ifdef TARGET_OS_FAMILY_solaris
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# include "thread_solaris.inline.hpp"
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#endif
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#ifdef TARGET_OS_FAMILY_windows
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# include "thread_windows.inline.hpp"
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#endif
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#ifdef TARGET_OS_FAMILY_bsd
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# include "thread_bsd.inline.hpp"
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#endif
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bool always_do_update_barrier = false;
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BarrierSet* oopDesc::_bs = NULL;
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void oopDesc::print_on(outputStream* st) const {
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  if (this == NULL) {
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    st->print_cr("NULL");
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  } else {
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    blueprint()->oop_print_on(oop(this), st);
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  }
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}
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void oopDesc::print_address_on(outputStream* st) const {
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  if (PrintOopAddress) {
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    st->print("{"INTPTR_FORMAT"}", this);
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  }
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}
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void oopDesc::print()         { print_on(tty);         }
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void oopDesc::print_address() { print_address_on(tty); }
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char* oopDesc::print_string() {
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  stringStream st;
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  print_on(&st);
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  return st.as_string();
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}
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void oopDesc::print_value() {
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  print_value_on(tty);
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}
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char* oopDesc::print_value_string() {
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  char buf[100];
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  stringStream st(buf, sizeof(buf));
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  print_value_on(&st);
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  return st.as_string();
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}
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void oopDesc::print_value_on(outputStream* st) const {
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  oop obj = oop(this);
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  if (this == NULL) {
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    st->print("NULL");
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  } else if (java_lang_String::is_instance(obj)) {
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    java_lang_String::print(obj, st);
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    if (PrintOopAddress) print_address_on(st);
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#ifdef ASSERT
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  } else if (!Universe::heap()->is_in(obj) || !Universe::heap()->is_in(klass())) {
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    st->print("### BAD OOP %p ###", (address)obj);
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#endif //ASSERT
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  } else {
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    blueprint()->oop_print_value_on(obj, st);
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  }
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}
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void oopDesc::verify_on(outputStream* st) {
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  if (this != NULL) {
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    blueprint()->oop_verify_on(this, st);
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  }
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}
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void oopDesc::verify() {
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  verify_on(tty);
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}
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bool oopDesc::partially_loaded() {
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  return blueprint()->oop_partially_loaded(this);
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}
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void oopDesc::set_partially_loaded() {
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  blueprint()->oop_set_partially_loaded(this);
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}
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intptr_t oopDesc::slow_identity_hash() {
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  // slow case; we have to acquire the micro lock in order to locate the header
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  ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY
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  HandleMark hm;
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  Handle object((oop)this);
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  assert(!is_shared_readonly(), "using identity hash on readonly object?");
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  return ObjectSynchronizer::identity_hash_value_for(object);
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}
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VerifyOopClosure VerifyOopClosure::verify_oop;
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void VerifyOopClosure::do_oop(oop* p)       { VerifyOopClosure::do_oop_work(p); }
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void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }