src/hotspot/share/oops/oop.inline.hpp
author eosterlund
Mon, 09 Oct 2017 14:39:59 +0200
changeset 47609 a1f68e415b48
parent 47216 71c04702a3d5
child 47624 b055cb5170f5
permissions -rw-r--r--
8188813: Generalize OrderAccess to use templates Reviewed-by: dholmes, coleenp
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/*
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 * Copyright (c) 1997, 2017, 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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#ifndef SHARE_VM_OOPS_OOP_INLINE_HPP
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#define SHARE_VM_OOPS_OOP_INLINE_HPP
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#include "gc/shared/ageTable.hpp"
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#include "gc/shared/barrierSet.inline.hpp"
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#include "gc/shared/cardTableModRefBS.hpp"
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#include "gc/shared/collectedHeap.inline.hpp"
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#include "gc/shared/genCollectedHeap.hpp"
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#include "gc/shared/generation.hpp"
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#include "oops/arrayKlass.hpp"
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#include "oops/arrayOop.hpp"
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#include "oops/klass.inline.hpp"
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#include "oops/markOop.inline.hpp"
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#include "oops/oop.hpp"
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#include "runtime/atomic.hpp"
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#include "runtime/orderAccess.inline.hpp"
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#include "runtime/os.hpp"
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#include "utilities/align.hpp"
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#include "utilities/macros.hpp"
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inline void update_barrier_set(void* p, oop v, bool release = false) {
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  assert(oopDesc::bs() != NULL, "Uninitialized bs in oop!");
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  oopDesc::bs()->write_ref_field(p, v, release);
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}
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template <class T> inline void update_barrier_set_pre(T* p, oop v) {
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  oopDesc::bs()->write_ref_field_pre(p, v);
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}
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template <class T> void oop_store(T* p, oop v) {
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  if (always_do_update_barrier) {
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    oop_store((volatile T*)p, v);
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  } else {
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    update_barrier_set_pre(p, v);
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    oopDesc::encode_store_heap_oop(p, v);
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    // always_do_update_barrier == false =>
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    // Either we are at a safepoint (in GC) or CMS is not used. In both
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    // cases it's unnecessary to mark the card as dirty with release sematics.
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    update_barrier_set((void*)p, v, false /* release */);  // cast away type
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  }
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}
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template <class T> void oop_store(volatile T* p, oop v) {
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  update_barrier_set_pre((T*)p, v);   // cast away volatile
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  // Used by release_obj_field_put, so use release_store_ptr.
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  oopDesc::release_encode_store_heap_oop(p, v);
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  // When using CMS we must mark the card corresponding to p as dirty
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  // with release sematics to prevent that CMS sees the dirty card but
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  // not the new value v at p due to reordering of the two
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  // stores. Note that CMS has a concurrent precleaning phase, where
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  // it reads the card table while the Java threads are running.
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  update_barrier_set((void*)p, v, true /* release */);    // cast away type
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}
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// Should replace *addr = oop assignments where addr type depends on UseCompressedOops
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// (without having to remember the function name this calls).
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inline void oop_store_raw(HeapWord* addr, oop value) {
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  if (UseCompressedOops) {
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    oopDesc::encode_store_heap_oop((narrowOop*)addr, value);
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  } else {
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    oopDesc::encode_store_heap_oop((oop*)addr, value);
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  }
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}
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// Implementation of all inlined member functions defined in oop.hpp
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// We need a separate file to avoid circular references
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void oopDesc::release_set_mark(markOop m) {
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  OrderAccess::release_store_ptr(&_mark, m);
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}
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markOop oopDesc::cas_set_mark(markOop new_mark, markOop old_mark) {
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  return Atomic::cmpxchg(new_mark, &_mark, old_mark);
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}
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void oopDesc::init_mark() {
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  set_mark(markOopDesc::prototype_for_object(this));
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}
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Klass* oopDesc::klass() const {
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  if (UseCompressedClassPointers) {
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    return Klass::decode_klass_not_null(_metadata._compressed_klass);
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  } else {
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    return _metadata._klass;
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  }
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}
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Klass* oopDesc::klass_or_null() const volatile {
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  if (UseCompressedClassPointers) {
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    return Klass::decode_klass(_metadata._compressed_klass);
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  } else {
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    return _metadata._klass;
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  }
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}
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Klass* oopDesc::klass_or_null_acquire() const volatile {
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  if (UseCompressedClassPointers) {
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    // Workaround for non-const load_acquire parameter.
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    const volatile narrowKlass* addr = &_metadata._compressed_klass;
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    volatile narrowKlass* xaddr = const_cast<volatile narrowKlass*>(addr);
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    return Klass::decode_klass(OrderAccess::load_acquire(xaddr));
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  } else {
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    return (Klass*)OrderAccess::load_ptr_acquire(&_metadata._klass);
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  }
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}
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Klass** oopDesc::klass_addr() {
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  // Only used internally and with CMS and will not work with
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  // UseCompressedOops
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  assert(!UseCompressedClassPointers, "only supported with uncompressed klass pointers");
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  return (Klass**) &_metadata._klass;
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}
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narrowKlass* oopDesc::compressed_klass_addr() {
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  assert(UseCompressedClassPointers, "only called by compressed klass pointers");
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  return &_metadata._compressed_klass;
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}
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#define CHECK_SET_KLASS(k)                                                \
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  do {                                                                    \
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    assert(Universe::is_bootstrapping() || k != NULL, "NULL Klass");      \
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    assert(Universe::is_bootstrapping() || k->is_klass(), "not a Klass"); \
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  } while (0)
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void oopDesc::set_klass(Klass* k) {
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  CHECK_SET_KLASS(k);
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  if (UseCompressedClassPointers) {
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    *compressed_klass_addr() = Klass::encode_klass_not_null(k);
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  } else {
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    *klass_addr() = k;
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  }
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}
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void oopDesc::release_set_klass(Klass* k) {
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  CHECK_SET_KLASS(k);
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  if (UseCompressedClassPointers) {
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    OrderAccess::release_store(compressed_klass_addr(),
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                               Klass::encode_klass_not_null(k));
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  } else {
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    OrderAccess::release_store_ptr(klass_addr(), k);
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  }
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}
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#undef CHECK_SET_KLASS
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int oopDesc::klass_gap() const {
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  return *(int*)(((intptr_t)this) + klass_gap_offset_in_bytes());
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}
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void oopDesc::set_klass_gap(int v) {
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  if (UseCompressedClassPointers) {
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    *(int*)(((intptr_t)this) + klass_gap_offset_in_bytes()) = v;
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  }
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}
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void oopDesc::set_klass_to_list_ptr(oop k) {
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  // This is only to be used during GC, for from-space objects, so no
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  // barrier is needed.
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  if (UseCompressedClassPointers) {
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    _metadata._compressed_klass = (narrowKlass)encode_heap_oop(k);  // may be null (parnew overflow handling)
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  } else {
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    _metadata._klass = (Klass*)(address)k;
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  }
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}
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oop oopDesc::list_ptr_from_klass() {
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  // This is only to be used during GC, for from-space objects.
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  if (UseCompressedClassPointers) {
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    return decode_heap_oop((narrowOop)_metadata._compressed_klass);
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  } else {
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    // Special case for GC
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    return (oop)(address)_metadata._klass;
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  }
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}
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bool oopDesc::is_a(Klass* k) const {
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  return klass()->is_subtype_of(k);
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}
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int oopDesc::size()  {
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  return size_given_klass(klass());
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}
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int oopDesc::size_given_klass(Klass* klass)  {
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  int lh = klass->layout_helper();
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  int s;
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  // lh is now a value computed at class initialization that may hint
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  // at the size.  For instances, this is positive and equal to the
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  // size.  For arrays, this is negative and provides log2 of the
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  // array element size.  For other oops, it is zero and thus requires
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  // a virtual call.
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  //
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  // We go to all this trouble because the size computation is at the
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  // heart of phase 2 of mark-compaction, and called for every object,
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  // alive or dead.  So the speed here is equal in importance to the
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  // speed of allocation.
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  if (lh > Klass::_lh_neutral_value) {
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    if (!Klass::layout_helper_needs_slow_path(lh)) {
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      s = lh >> LogHeapWordSize;  // deliver size scaled by wordSize
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    } else {
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      s = klass->oop_size(this);
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    }
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  } else if (lh <= Klass::_lh_neutral_value) {
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    // The most common case is instances; fall through if so.
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    if (lh < Klass::_lh_neutral_value) {
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      // Second most common case is arrays.  We have to fetch the
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      // length of the array, shift (multiply) it appropriately,
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      // up to wordSize, add the header, and align to object size.
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      size_t size_in_bytes;
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      size_t array_length = (size_t) ((arrayOop)this)->length();
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      size_in_bytes = array_length << Klass::layout_helper_log2_element_size(lh);
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      size_in_bytes += Klass::layout_helper_header_size(lh);
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      // This code could be simplified, but by keeping array_header_in_bytes
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      // in units of bytes and doing it this way we can round up just once,
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      // skipping the intermediate round to HeapWordSize.
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      s = (int)(align_up(size_in_bytes, MinObjAlignmentInBytes) / HeapWordSize);
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      // ParNew (used by CMS), UseParallelGC and UseG1GC can change the length field
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      // of an "old copy" of an object array in the young gen so it indicates
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      // the grey portion of an already copied array. This will cause the first
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      // disjunct below to fail if the two comparands are computed across such
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      // a concurrent change.
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      // ParNew also runs with promotion labs (which look like int
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      // filler arrays) which are subject to changing their declared size
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      // when finally retiring a PLAB; this also can cause the first disjunct
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      // to fail for another worker thread that is concurrently walking the block
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      // offset table. Both these invariant failures are benign for their
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      // current uses; we relax the assertion checking to cover these two cases below:
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      //     is_objArray() && is_forwarded()   // covers first scenario above
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      //  || is_typeArray()                    // covers second scenario above
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      // If and when UseParallelGC uses the same obj array oop stealing/chunking
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      // technique, we will need to suitably modify the assertion.
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      assert((s == klass->oop_size(this)) ||
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             (Universe::heap()->is_gc_active() &&
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              ((is_typeArray() && UseConcMarkSweepGC) ||
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               (is_objArray()  && is_forwarded() && (UseConcMarkSweepGC || UseParallelGC || UseG1GC)))),
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             "wrong array object size");
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    } else {
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      // Must be zero, so bite the bullet and take the virtual call.
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      s = klass->oop_size(this);
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    }
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  }
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  assert(s > 0, "Oop size must be greater than zero, not %d", s);
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  assert(is_object_aligned(s), "Oop size is not properly aligned: %d", s);
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  return s;
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}
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bool oopDesc::is_instance()  const { return klass()->is_instance_klass();  }
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bool oopDesc::is_array()     const { return klass()->is_array_klass();     }
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bool oopDesc::is_objArray()  const { return klass()->is_objArray_klass();  }
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bool oopDesc::is_typeArray() const { return klass()->is_typeArray_klass(); }
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void*      oopDesc::field_base(int offset)          const { return (void*)&((char*)this)[offset]; }
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jbyte*     oopDesc::byte_field_addr(int offset)     const { return (jbyte*)    field_base(offset); }
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jchar*     oopDesc::char_field_addr(int offset)     const { return (jchar*)    field_base(offset); }
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jboolean*  oopDesc::bool_field_addr(int offset)     const { return (jboolean*) field_base(offset); }
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jint*      oopDesc::int_field_addr(int offset)      const { return (jint*)     field_base(offset); }
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jshort*    oopDesc::short_field_addr(int offset)    const { return (jshort*)   field_base(offset); }
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jlong*     oopDesc::long_field_addr(int offset)     const { return (jlong*)    field_base(offset); }
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jfloat*    oopDesc::float_field_addr(int offset)    const { return (jfloat*)   field_base(offset); }
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jdouble*   oopDesc::double_field_addr(int offset)   const { return (jdouble*)  field_base(offset); }
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Metadata** oopDesc::metadata_field_addr(int offset) const { return (Metadata**)field_base(offset); }
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template <class T> T* oopDesc::obj_field_addr(int offset) const { return (T*)  field_base(offset); }
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address*   oopDesc::address_field_addr(int offset)  const { return (address*)  field_base(offset); }
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// Functions for getting and setting oops within instance objects.
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// If the oops are compressed, the type passed to these overloaded functions
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// is narrowOop.  All functions are overloaded so they can be called by
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// template functions without conditionals (the compiler instantiates via
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// the right type and inlines the appopriate code).
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// Algorithm for encoding and decoding oops from 64 bit pointers to 32 bit
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// offset from the heap base.  Saving the check for null can save instructions
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// in inner GC loops so these are separated.
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inline bool check_obj_alignment(oop obj) {
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  return (cast_from_oop<intptr_t>(obj) & MinObjAlignmentInBytesMask) == 0;
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}
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oop oopDesc::decode_heap_oop_not_null(narrowOop v) {
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  assert(!is_null(v), "narrow oop value can never be zero");
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  address base = Universe::narrow_oop_base();
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  int    shift = Universe::narrow_oop_shift();
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  oop result = (oop)(void*)((uintptr_t)base + ((uintptr_t)v << shift));
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  assert(check_obj_alignment(result), "address not aligned: " INTPTR_FORMAT, p2i((void*) result));
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  return result;
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}
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oop oopDesc::decode_heap_oop(narrowOop v) {
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  return is_null(v) ? (oop)NULL : decode_heap_oop_not_null(v);
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}
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narrowOop oopDesc::encode_heap_oop_not_null(oop v) {
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  assert(!is_null(v), "oop value can never be zero");
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   326
  assert(check_obj_alignment(v), "Address not aligned");
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  assert(Universe::heap()->is_in_reserved(v), "Address not in heap");
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  address base = Universe::narrow_oop_base();
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  int    shift = Universe::narrow_oop_shift();
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  uint64_t  pd = (uint64_t)(pointer_delta((void*)v, (void*)base, 1));
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  assert(OopEncodingHeapMax > pd, "change encoding max if new encoding");
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  uint64_t result = pd >> shift;
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   333
  assert((result & CONST64(0xffffffff00000000)) == 0, "narrow oop overflow");
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   334
  assert(decode_heap_oop(result) == v, "reversibility");
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   335
  return (narrowOop)result;
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   336
}
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   337
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narrowOop oopDesc::encode_heap_oop(oop v) {
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  return (is_null(v)) ? (narrowOop)0 : encode_heap_oop_not_null(v);
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}
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   341
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// Load and decode an oop out of the Java heap into a wide oop.
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oop oopDesc::load_decode_heap_oop_not_null(narrowOop* p) {
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  return decode_heap_oop_not_null(*p);
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   345
}
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   346
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// Load and decode an oop out of the heap accepting null
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oop oopDesc::load_decode_heap_oop(narrowOop* p) {
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  return decode_heap_oop(*p);
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}
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   352
// Encode and store a heap oop.
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void oopDesc::encode_store_heap_oop_not_null(narrowOop* p, oop v) {
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  *p = encode_heap_oop_not_null(v);
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   355
}
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// Encode and store a heap oop allowing for null.
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   358
void oopDesc::encode_store_heap_oop(narrowOop* p, oop v) {
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   359
  *p = encode_heap_oop(v);
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   360
}
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   362
// Store heap oop as is for volatile fields.
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void oopDesc::release_store_heap_oop(volatile oop* p, oop v) {
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  OrderAccess::release_store_ptr(p, v);
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   365
}
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void oopDesc::release_store_heap_oop(volatile narrowOop* p, narrowOop v) {
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  OrderAccess::release_store(p, v);
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   368
}
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   369
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void oopDesc::release_encode_store_heap_oop_not_null(volatile narrowOop* p, oop v) {
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  // heap oop is not pointer sized.
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  OrderAccess::release_store(p, encode_heap_oop_not_null(v));
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   373
}
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void oopDesc::release_encode_store_heap_oop_not_null(volatile oop* p, oop v) {
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  OrderAccess::release_store_ptr(p, v);
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   376
}
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   377
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void oopDesc::release_encode_store_heap_oop(volatile oop* p, oop v) {
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   379
  OrderAccess::release_store_ptr(p, v);
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   380
}
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   381
void oopDesc::release_encode_store_heap_oop(volatile narrowOop* p, oop v) {
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   382
  OrderAccess::release_store(p, encode_heap_oop(v));
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   383
}
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   384
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   385
// These functions are only used to exchange oop fields in instances,
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   386
// not headers.
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   387
oop oopDesc::atomic_exchange_oop(oop exchange_value, volatile HeapWord *dest) {
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   388
  if (UseCompressedOops) {
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   389
    // encode exchange value from oop to T
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   390
    narrowOop val = encode_heap_oop(exchange_value);
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   391
    narrowOop old = (narrowOop)Atomic::xchg(val, (narrowOop*)dest);
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   392
    // decode old from T to oop
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   393
    return decode_heap_oop(old);
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   394
  } else {
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   395
    return (oop)Atomic::xchg_ptr(exchange_value, (oop*)dest);
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   396
  }
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   397
}
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   398
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   399
oop oopDesc::atomic_compare_exchange_oop(oop exchange_value,
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   400
                                         volatile HeapWord *dest,
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   401
                                         oop compare_value,
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   402
                                         bool prebarrier) {
13728
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diff changeset
   403
  if (UseCompressedOops) {
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diff changeset
   404
    if (prebarrier) {
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diff changeset
   405
      update_barrier_set_pre((narrowOop*)dest, exchange_value);
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diff changeset
   406
    }
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   407
    // encode exchange and compare value from oop to T
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diff changeset
   408
    narrowOop val = encode_heap_oop(exchange_value);
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   409
    narrowOop cmp = encode_heap_oop(compare_value);
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diff changeset
   410
46958
a13bd8c6b7a2 8186166: Generalize Atomic::cmpxchg with templates
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   411
    narrowOop old = Atomic::cmpxchg(val, (narrowOop*)dest, cmp);
13728
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diff changeset
   412
    // decode old from T to oop
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diff changeset
   413
    return decode_heap_oop(old);
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diff changeset
   414
  } else {
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diff changeset
   415
    if (prebarrier) {
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diff changeset
   416
      update_barrier_set_pre((oop*)dest, exchange_value);
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diff changeset
   417
    }
46958
a13bd8c6b7a2 8186166: Generalize Atomic::cmpxchg with templates
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diff changeset
   418
    return Atomic::cmpxchg(exchange_value, (oop*)dest, compare_value);
13728
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   419
  }
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diff changeset
   420
}
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diff changeset
   421
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   422
// In order to put or get a field out of an instance, must first check
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diff changeset
   423
// if the field has been compressed and uncompress it.
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goetz
parents: 33611
diff changeset
   424
oop oopDesc::obj_field(int offset) const {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   425
  return UseCompressedOops ?
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   426
    load_decode_heap_oop(obj_field_addr<narrowOop>(offset)) :
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   427
    load_decode_heap_oop(obj_field_addr<oop>(offset));
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   428
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   429
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   430
void oopDesc::obj_field_put(int offset, oop value) {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   431
  UseCompressedOops ? oop_store(obj_field_addr<narrowOop>(offset), value) :
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   432
                      oop_store(obj_field_addr<oop>(offset),       value);
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   433
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   434
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   435
void oopDesc::obj_field_put_raw(int offset, oop value) {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   436
  UseCompressedOops ?
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   437
    encode_store_heap_oop(obj_field_addr<narrowOop>(offset), value) :
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   438
    encode_store_heap_oop(obj_field_addr<oop>(offset),       value);
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   439
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   440
void oopDesc::obj_field_put_volatile(int offset, oop value) {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   441
  OrderAccess::release();
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   442
  obj_field_put(offset, value);
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   443
  OrderAccess::fence();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   446
Metadata* oopDesc::metadata_field(int offset) const           { return *metadata_field_addr(offset);   }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   447
void oopDesc::metadata_field_put(int offset, Metadata* value) { *metadata_field_addr(offset) = value;  }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   448
46722
ae2cfffe2e64 8185296: java_lang_Class::array_klass should be array_klass_acquire
coleenp
parents: 46710
diff changeset
   449
Metadata* oopDesc::metadata_field_acquire(int offset) const   {
ae2cfffe2e64 8185296: java_lang_Class::array_klass should be array_klass_acquire
coleenp
parents: 46710
diff changeset
   450
  return (Metadata*)OrderAccess::load_ptr_acquire(metadata_field_addr(offset));
ae2cfffe2e64 8185296: java_lang_Class::array_klass should be array_klass_acquire
coleenp
parents: 46710
diff changeset
   451
}
ae2cfffe2e64 8185296: java_lang_Class::array_klass should be array_klass_acquire
coleenp
parents: 46710
diff changeset
   452
46710
941f16147746 8182397: Race in field updates when creating ArrayKlasses can lead to crash
coleenp
parents: 46683
diff changeset
   453
void oopDesc::release_metadata_field_put(int offset, Metadata* value) {
941f16147746 8182397: Race in field updates when creating ArrayKlasses can lead to crash
coleenp
parents: 46683
diff changeset
   454
  OrderAccess::release_store_ptr(metadata_field_addr(offset), value);
941f16147746 8182397: Race in field updates when creating ArrayKlasses can lead to crash
coleenp
parents: 46683
diff changeset
   455
}
941f16147746 8182397: Race in field updates when creating ArrayKlasses can lead to crash
coleenp
parents: 46683
diff changeset
   456
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   457
jbyte oopDesc::byte_field(int offset) const                   { return (jbyte) *byte_field_addr(offset);    }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   458
void oopDesc::byte_field_put(int offset, jbyte contents)      { *byte_field_addr(offset) = (jint) contents; }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   459
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   460
jchar oopDesc::char_field(int offset) const                   { return (jchar) *char_field_addr(offset);    }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   461
void oopDesc::char_field_put(int offset, jchar contents)      { *char_field_addr(offset) = (jint) contents; }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   462
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   463
jboolean oopDesc::bool_field(int offset) const                { return (jboolean) *bool_field_addr(offset); }
37480
291ee208fb72 8132051: Better byte behavior
coleenp
parents: 36572
diff changeset
   464
void oopDesc::bool_field_put(int offset, jboolean contents)   { *bool_field_addr(offset) = (((jint) contents) & 1); }
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   465
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   466
jint oopDesc::int_field(int offset) const                     { return *int_field_addr(offset);        }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   467
void oopDesc::int_field_put(int offset, jint contents)        { *int_field_addr(offset) = contents;    }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   468
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   469
jshort oopDesc::short_field(int offset) const                 { return (jshort) *short_field_addr(offset);  }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   470
void oopDesc::short_field_put(int offset, jshort contents)    { *short_field_addr(offset) = (jint) contents;}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   471
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   472
jlong oopDesc::long_field(int offset) const                   { return *long_field_addr(offset);       }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   473
void oopDesc::long_field_put(int offset, jlong contents)      { *long_field_addr(offset) = contents;   }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   474
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   475
jfloat oopDesc::float_field(int offset) const                 { return *float_field_addr(offset);      }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   476
void oopDesc::float_field_put(int offset, jfloat contents)    { *float_field_addr(offset) = contents;  }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   477
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   478
jdouble oopDesc::double_field(int offset) const               { return *double_field_addr(offset);     }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   479
void oopDesc::double_field_put(int offset, jdouble contents)  { *double_field_addr(offset) = contents; }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   480
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   481
address oopDesc::address_field(int offset) const              { return *address_field_addr(offset);     }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   482
void oopDesc::address_field_put(int offset, address contents) { *address_field_addr(offset) = contents; }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   483
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   484
oop oopDesc::obj_field_acquire(int offset) const {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   485
  return UseCompressedOops ?
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   486
             decode_heap_oop((narrowOop)
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   487
               OrderAccess::load_acquire(obj_field_addr<narrowOop>(offset)))
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   488
           : decode_heap_oop((oop)
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   489
               OrderAccess::load_ptr_acquire(obj_field_addr<oop>(offset)));
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   490
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   491
void oopDesc::release_obj_field_put(int offset, oop value) {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   492
  UseCompressedOops ?
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   493
    oop_store((volatile narrowOop*)obj_field_addr<narrowOop>(offset), value) :
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   494
    oop_store((volatile oop*)      obj_field_addr<oop>(offset),       value);
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   495
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   496
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   497
jbyte oopDesc::byte_field_acquire(int offset) const                   { return OrderAccess::load_acquire(byte_field_addr(offset));     }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   498
void oopDesc::release_byte_field_put(int offset, jbyte contents)      { OrderAccess::release_store(byte_field_addr(offset), contents); }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   499
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   500
jchar oopDesc::char_field_acquire(int offset) const                   { return OrderAccess::load_acquire(char_field_addr(offset));     }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   501
void oopDesc::release_char_field_put(int offset, jchar contents)      { OrderAccess::release_store(char_field_addr(offset), contents); }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   502
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   503
jboolean oopDesc::bool_field_acquire(int offset) const                { return OrderAccess::load_acquire(bool_field_addr(offset));     }
47609
a1f68e415b48 8188813: Generalize OrderAccess to use templates
eosterlund
parents: 47216
diff changeset
   504
void oopDesc::release_bool_field_put(int offset, jboolean contents)   { OrderAccess::release_store(bool_field_addr(offset), jboolean(contents & 1)); }
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   505
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   506
jint oopDesc::int_field_acquire(int offset) const                     { return OrderAccess::load_acquire(int_field_addr(offset));      }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   507
void oopDesc::release_int_field_put(int offset, jint contents)        { OrderAccess::release_store(int_field_addr(offset), contents);  }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   508
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   509
jshort oopDesc::short_field_acquire(int offset) const                 { return (jshort)OrderAccess::load_acquire(short_field_addr(offset)); }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   510
void oopDesc::release_short_field_put(int offset, jshort contents)    { OrderAccess::release_store(short_field_addr(offset), contents);     }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   511
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   512
jlong oopDesc::long_field_acquire(int offset) const                   { return OrderAccess::load_acquire(long_field_addr(offset));       }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   513
void oopDesc::release_long_field_put(int offset, jlong contents)      { OrderAccess::release_store(long_field_addr(offset), contents);   }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   514
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   515
jfloat oopDesc::float_field_acquire(int offset) const                 { return OrderAccess::load_acquire(float_field_addr(offset));      }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   516
void oopDesc::release_float_field_put(int offset, jfloat contents)    { OrderAccess::release_store(float_field_addr(offset), contents);  }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   517
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   518
jdouble oopDesc::double_field_acquire(int offset) const               { return OrderAccess::load_acquire(double_field_addr(offset));     }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   519
void oopDesc::release_double_field_put(int offset, jdouble contents)  { OrderAccess::release_store(double_field_addr(offset), contents); }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   520
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   521
address oopDesc::address_field_acquire(int offset) const              { return (address) OrderAccess::load_ptr_acquire(address_field_addr(offset)); }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   522
void oopDesc::release_address_field_put(int offset, address contents) { OrderAccess::release_store_ptr(address_field_addr(offset), contents); }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   523
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   524
bool oopDesc::is_locked() const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
  return mark()->is_locked();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   528
bool oopDesc::is_unlocked() const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
  return mark()->is_unlocked();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   532
bool oopDesc::has_bias_pattern() const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
  return mark()->has_bias_pattern();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   536
// Used only for markSweep, scavenging
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   537
bool oopDesc::is_gc_marked() const {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   538
  return mark()->is_marked();
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   539
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   540
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   541
bool oopDesc::is_scavengable() const {
29081
c61eb4914428 8072911: Remove includes of oop.inline.hpp from .hpp files
stefank
parents: 27898
diff changeset
   542
  return Universe::heap()->is_scavengable(this);
c61eb4914428 8072911: Remove includes of oop.inline.hpp from .hpp files
stefank
parents: 27898
diff changeset
   543
}
c61eb4914428 8072911: Remove includes of oop.inline.hpp from .hpp files
stefank
parents: 27898
diff changeset
   544
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
// Used by scavengers
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   546
bool oopDesc::is_forwarded() const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
  // The extra heap check is needed since the obj might be locked, in which case the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
  // mark would point to a stack location and have the sentinel bit cleared
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
  return mark()->is_marked();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
// Used by scavengers
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   553
void oopDesc::forward_to(oop p) {
5694
1e0532a6abff 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents: 3262
diff changeset
   554
  assert(check_obj_alignment(p),
1e0532a6abff 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents: 3262
diff changeset
   555
         "forwarding to something not aligned");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
  assert(Universe::heap()->is_in_reserved(p),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
         "forwarding to something not in heap");
46810
7dad333205cd 8179302: Pre-resolve constant pool string entries and cache resolved_reference arrays in CDS archive.
jiangli
parents: 46722
diff changeset
   558
  assert(!is_archive_object(oop(this)) &&
7dad333205cd 8179302: Pre-resolve constant pool string entries and cache resolved_reference arrays in CDS archive.
jiangli
parents: 46722
diff changeset
   559
         !is_archive_object(p),
7dad333205cd 8179302: Pre-resolve constant pool string entries and cache resolved_reference arrays in CDS archive.
jiangli
parents: 46722
diff changeset
   560
         "forwarding archive object");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
  markOop m = markOopDesc::encode_pointer_as_mark(p);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
  assert(m->decode_pointer() == p, "encoding must be reversable");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
  set_mark(m);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
// Used by parallel scavengers
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   567
bool oopDesc::cas_forward_to(oop p, markOop compare) {
5694
1e0532a6abff 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents: 3262
diff changeset
   568
  assert(check_obj_alignment(p),
1e0532a6abff 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents: 3262
diff changeset
   569
         "forwarding to something not aligned");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
  assert(Universe::heap()->is_in_reserved(p),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
         "forwarding to something not in heap");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
  markOop m = markOopDesc::encode_pointer_as_mark(p);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
  assert(m->decode_pointer() == p, "encoding must be reversable");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
  return cas_set_mark(m, compare) == compare;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
29689
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   577
#if INCLUDE_ALL_GCS
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   578
oop oopDesc::forward_to_atomic(oop p) {
29689
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   579
  markOop oldMark = mark();
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   580
  markOop forwardPtrMark = markOopDesc::encode_pointer_as_mark(p);
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   581
  markOop curMark;
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   582
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   583
  assert(forwardPtrMark->decode_pointer() == p, "encoding must be reversable");
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   584
  assert(sizeof(markOop) == sizeof(intptr_t), "CAS below requires this.");
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   585
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   586
  while (!oldMark->is_marked()) {
46958
a13bd8c6b7a2 8186166: Generalize Atomic::cmpxchg with templates
eosterlund
parents: 46810
diff changeset
   587
    curMark = Atomic::cmpxchg(forwardPtrMark, &_mark, oldMark);
29689
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   588
    assert(is_forwarded(), "object should have been forwarded");
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   589
    if (curMark == oldMark) {
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   590
      return NULL;
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   591
    }
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   592
    // If the CAS was unsuccessful then curMark->is_marked()
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   593
    // should return true as another thread has CAS'd in another
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   594
    // forwarding pointer.
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   595
    oldMark = curMark;
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   596
  }
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   597
  return forwardee();
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   598
}
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   599
#endif
dc72789f83ae 8075249: Cleanup forward_to_atomic and ClaimedForwardPtr
stefank
parents: 29687
diff changeset
   600
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
// Note that the forwardee is not the same thing as the displaced_mark.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
// The forwardee is used when copying during scavenge and mark-sweep.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
// It does need to clear the low two locking- and GC-related bits.
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   604
oop oopDesc::forwardee() const {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 1
diff changeset
   605
  return (oop) mark()->decode_pointer();
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 1
diff changeset
   606
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
// The following method needs to be MT safe.
35862
411842d0c882 8146395: Add inline qualifier in oop.hpp and fix inlining in gc files
goetz
parents: 35498
diff changeset
   609
uint oopDesc::age() const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
  assert(!is_forwarded(), "Attempt to read age from forwarded mark");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
  if (has_displaced_mark()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
    return displaced_mark()->age();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
    return mark()->age();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   618
void oopDesc::incr_age() {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
  assert(!is_forwarded(), "Attempt to increment age of forwarded mark");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
  if (has_displaced_mark()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
    set_displaced_mark(displaced_mark()->incr_age());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
    set_mark(mark()->incr_age());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   627
#if INCLUDE_ALL_GCS
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   628
void oopDesc::pc_follow_contents(ParCompactionManager* cm) {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   629
  klass()->oop_pc_follow_contents(this, cm);
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   630
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   631
35877
a2a62511d0f8 8146987: Improve Parallel GC Full GC by caching results of live_words_in_range()
tschatzl
parents: 35862
diff changeset
   632
void oopDesc::pc_update_contents(ParCompactionManager* cm) {
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   633
  Klass* k = klass();
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   634
  if (!k->is_typeArray_klass()) {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   635
    // It might contain oops beyond the header, so take the virtual call.
35877
a2a62511d0f8 8146987: Improve Parallel GC Full GC by caching results of live_words_in_range()
tschatzl
parents: 35862
diff changeset
   636
    k->oop_pc_update_pointers(this, cm);
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   637
  }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   638
  // Else skip it.  The TypeArrayKlass in the header never needs scavenging.
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   639
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   640
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   641
void oopDesc::ps_push_contents(PSPromotionManager* pm) {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   642
  Klass* k = klass();
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   643
  if (!k->is_typeArray_klass()) {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   644
    // It might contain oops beyond the header, so take the virtual call.
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   645
    k->oop_ps_push_contents(this, pm);
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   646
  }
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   647
  // Else skip it.  The TypeArrayKlass in the header never needs scavenging.
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   648
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   649
#endif // INCLUDE_ALL_GCS
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   650
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   651
#define OOP_ITERATE_DEFN(OopClosureType, nv_suffix)                 \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   652
                                                                    \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   653
void oopDesc::oop_iterate(OopClosureType* blk) {                    \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   654
  klass()->oop_oop_iterate##nv_suffix(this, blk);                   \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   655
}                                                                   \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   656
                                                                    \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   657
void oopDesc::oop_iterate(OopClosureType* blk, MemRegion mr) {      \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   658
  klass()->oop_oop_iterate_bounded##nv_suffix(this, blk, mr);       \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   659
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   660
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   661
#define OOP_ITERATE_SIZE_DEFN(OopClosureType, nv_suffix)            \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   662
                                                                    \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   663
int oopDesc::oop_iterate_size(OopClosureType* blk) {                \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   664
  Klass* k = klass();                                               \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   665
  int size = size_given_klass(k);                                   \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   666
  k->oop_oop_iterate##nv_suffix(this, blk);                         \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   667
  return size;                                                      \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   668
}                                                                   \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   669
                                                                    \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   670
int oopDesc::oop_iterate_size(OopClosureType* blk, MemRegion mr) {  \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   671
  Klass* k = klass();                                               \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   672
  int size = size_given_klass(k);                                   \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   673
  k->oop_oop_iterate_bounded##nv_suffix(this, blk, mr);             \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   674
  return size;                                                      \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   675
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   676
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   677
int oopDesc::oop_iterate_no_header(OopClosure* blk) {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   678
  // The NoHeaderExtendedOopClosure wraps the OopClosure and proxies all
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   679
  // the do_oop calls, but turns off all other features in ExtendedOopClosure.
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   680
  NoHeaderExtendedOopClosure cl(blk);
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   681
  return oop_iterate_size(&cl);
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   682
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   683
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   684
int oopDesc::oop_iterate_no_header(OopClosure* blk, MemRegion mr) {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   685
  NoHeaderExtendedOopClosure cl(blk);
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   686
  return oop_iterate_size(&cl, mr);
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   687
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   688
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   689
#if INCLUDE_ALL_GCS
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   690
#define OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix)       \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   691
                                                                    \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   692
inline void oopDesc::oop_iterate_backwards(OopClosureType* blk) {   \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   693
  klass()->oop_oop_iterate_backwards##nv_suffix(this, blk);         \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   694
}
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   695
#else
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   696
#define OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix)
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   697
#endif // INCLUDE_ALL_GCS
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   698
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   699
#define ALL_OOPDESC_OOP_ITERATE(OopClosureType, nv_suffix)  \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   700
  OOP_ITERATE_DEFN(OopClosureType, nv_suffix)               \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   701
  OOP_ITERATE_SIZE_DEFN(OopClosureType, nv_suffix)          \
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   702
  OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix)
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   703
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   704
ALL_OOP_OOP_ITERATE_CLOSURES_1(ALL_OOPDESC_OOP_ITERATE)
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   705
ALL_OOP_OOP_ITERATE_CLOSURES_2(ALL_OOPDESC_OOP_ITERATE)
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   706
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   707
intptr_t oopDesc::identity_hash() {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
  // Fast case; if the object is unlocked and the hash value is set, no locking is needed
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
  // Note: The mark must be read into local variable to avoid concurrent updates.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
  markOop mrk = mark();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
  if (mrk->is_unlocked() && !mrk->has_no_hash()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
    return mrk->hash();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
  } else if (mrk->is_marked()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
    return mrk->hash();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
    return slow_identity_hash();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   720
bool oopDesc::has_displaced_mark() const {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   721
  return mark()->has_displaced_mark_helper();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 10540
diff changeset
   722
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 10540
diff changeset
   723
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   724
markOop oopDesc::displaced_mark() const {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   725
  return mark()->displaced_mark_helper();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 10540
diff changeset
   726
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 10540
diff changeset
   727
35498
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   728
void oopDesc::set_displaced_mark(markOop m) {
392b50de06c6 8146401: Clean up oop.hpp: add inline directives and fix header files
goetz
parents: 33611
diff changeset
   729
  mark()->set_displaced_mark_helper(m);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 6772
diff changeset
   732
#endif // SHARE_VM_OOPS_OOP_INLINE_HPP