hotspot/src/share/vm/oops/oop.cpp
author coleenp
Sun, 13 Apr 2008 17:43:42 -0400
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parent 1 489c9b5090e2
child 670 ddf3e9583f2f
permissions -rw-r--r--
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
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/*
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 * Copyright 1997-2006 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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# include "incls/_precompiled.incl"
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# include "incls/_oop.cpp.incl"
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bool always_do_update_barrier = false;
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BarrierSet* oopDesc::_bs = NULL;
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#ifdef PRODUCT
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void oopDesc::print_on(outputStream* st) const {}
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void oopDesc::print_value_on(outputStream* st) const {}
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void oopDesc::print_address_on(outputStream* st) const {}
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char* oopDesc::print_value_string() { return NULL; }
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char* oopDesc::print_string() { return NULL; }
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void oopDesc::print()         {}
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void oopDesc::print_value()   {}
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void oopDesc::print_address() {}
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#else
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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_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
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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::print_address_on(outputStream* st) const {
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  if (PrintOopAddress) {
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    st->print("{");
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    if (PrintOopAddress) {
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      st->print(INTPTR_FORMAT, this);
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    }
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    st->print("}");
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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_value()   { print_value_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 = new stringStream();
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  print_on(st);
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  return st->as_string();
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}
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char* oopDesc::print_value_string() {
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  stringStream* st = new stringStream();
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  print_value_on(st);
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  return st->as_string();
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}
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#endif // PRODUCT
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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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// XXX verify_old_oop doesn't do anything (should we remove?)
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void oopDesc::verify_old_oop(oop* p, bool allow_dirty) {
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  blueprint()->oop_verify_old_oop(this, p, allow_dirty);
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}
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void oopDesc::verify_old_oop(narrowOop* p, bool allow_dirty) {
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  blueprint()->oop_verify_old_oop(this, p, allow_dirty);
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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); }