duke@435: /*
stefank@2314:  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #ifndef SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP
stefank@2314: #define SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP
stefank@2314: 
stefank@2314: #ifndef SERIALGC
stefank@2314: #include "gc_implementation/parNew/parNewGeneration.hpp"
stefank@2314: #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp"
stefank@2314: #include "gc_implementation/parallelScavenge/psCompactionManager.hpp"
stefank@2314: #include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
stefank@2314: #include "gc_implementation/parallelScavenge/psScavenge.hpp"
stefank@2314: #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
stefank@2314: #endif
stefank@2314: 
duke@435: inline void oopDesc::update_contents(ParCompactionManager* cm) {
duke@435:   // The klass field must be updated before anything else
duke@435:   // can be done.
duke@435:   DEBUG_ONLY(klassOopDesc* original_klass = klass());
duke@435: 
duke@435:   // Can the option to update and/or copy be moved up in the
duke@435:   // call chain to avoid calling into here?
duke@435: 
duke@435:   if (PSParallelCompact::should_update_klass(klass())) {
duke@435:     update_header();
duke@435:     assert(klass()->is_klass(), "Not updated correctly");
duke@435:   } else {
duke@435:     assert(klass()->is_klass(), "Not updated");
duke@435:   }
duke@435: 
duke@435:   Klass* new_klass = blueprint();
duke@435:   if (!new_klass->oop_is_typeArray()) {
duke@435:     // It might contain oops beyond the header, so take the virtual call.
duke@435:     new_klass->oop_update_pointers(cm, this);
duke@435:   }
duke@435:   // Else skip it.  The typeArrayKlass in the header never needs scavenging.
duke@435: }
duke@435: 
duke@435: inline void oopDesc::update_contents(ParCompactionManager* cm,
duke@435:                                      HeapWord* begin_limit,
duke@435:                                      HeapWord* end_limit) {
duke@435:   // The klass field must be updated before anything else
duke@435:   // can be done.
duke@435:   debug_only(klassOopDesc* original_klass = klass());
duke@435: 
duke@435:   update_contents(cm, klass(), begin_limit, end_limit);
duke@435: }
duke@435: 
duke@435: inline void oopDesc::update_contents(ParCompactionManager* cm,
duke@435:                                      klassOop old_klass,
duke@435:                                      HeapWord* begin_limit,
duke@435:                                      HeapWord* end_limit) {
duke@435: 
duke@435:   klassOop updated_klass =
duke@435:     PSParallelCompact::summary_data().calc_new_klass(old_klass);
duke@435: 
duke@435:   // Needs to be boundary aware for the 64 bit case
duke@435:   // update_header();
duke@435:   // The klass has moved.  Is the location of the klass
duke@435:   // within the limits?
coleenp@548:   if ((((HeapWord*)&_metadata._klass) >= begin_limit) &&
coleenp@548:       (((HeapWord*)&_metadata._klass) < end_limit)) {
duke@435:     set_klass(updated_klass);
duke@435:   }
duke@435: 
duke@435:   Klass* klass = updated_klass->klass_part();
duke@435:   if (!klass->oop_is_typeArray()) {
duke@435:     // It might contain oops beyond the header, so take the virtual call.
duke@435:     klass->oop_update_pointers(cm, this, begin_limit, end_limit);
duke@435:   }
duke@435:   // Else skip it.  The typeArrayKlass in the header never needs scavenging.
duke@435: }
duke@435: 
duke@435: inline void oopDesc::follow_contents(ParCompactionManager* cm) {
duke@435:   assert (PSParallelCompact::mark_bitmap()->is_marked(this),
duke@435:     "should be marked");
duke@435:   blueprint()->oop_follow_contents(cm, this);
duke@435: }
duke@435: 
duke@435: // Used by parallel old GC.
duke@435: 
duke@435: inline void oopDesc::follow_header(ParCompactionManager* cm) {
coleenp@548:   if (UseCompressedOops) {
coleenp@548:     PSParallelCompact::mark_and_push(cm, compressed_klass_addr());
coleenp@548:   } else {
coleenp@548:     PSParallelCompact::mark_and_push(cm, klass_addr());
coleenp@548:   }
duke@435: }
duke@435: 
duke@435: inline oop oopDesc::forward_to_atomic(oop p) {
duke@435:   assert(ParNewGeneration::is_legal_forward_ptr(p),
duke@435:          "illegal forwarding pointer value.");
duke@435:   markOop oldMark = mark();
duke@435:   markOop forwardPtrMark = markOopDesc::encode_pointer_as_mark(p);
duke@435:   markOop curMark;
duke@435: 
duke@435:   assert(forwardPtrMark->decode_pointer() == p, "encoding must be reversable");
duke@435:   assert(sizeof(markOop) == sizeof(intptr_t), "CAS below requires this.");
duke@435: 
duke@435:   while (!is_forwarded()) {
duke@435:     curMark = (markOop)Atomic::cmpxchg_ptr(forwardPtrMark, &_mark, oldMark);
duke@435:     if (curMark == oldMark) {
duke@435:       assert(is_forwarded(), "the CAS should have succeeded.");
duke@435:       return NULL;
duke@435:     }
duke@435:     oldMark = curMark;
duke@435:   }
duke@435:   return forwardee();
duke@435: }
duke@435: 
duke@435: inline void oopDesc::update_header() {
coleenp@548:   if (UseCompressedOops) {
coleenp@548:     PSParallelCompact::adjust_pointer(compressed_klass_addr());
coleenp@548:   } else {
coleenp@548:     PSParallelCompact::adjust_pointer(klass_addr());
coleenp@548:   }
duke@435: }
duke@435: 
duke@435: inline void oopDesc::update_header(HeapWord* beg_addr, HeapWord* end_addr) {
coleenp@548:   if (UseCompressedOops) {
coleenp@548:     PSParallelCompact::adjust_pointer(compressed_klass_addr(),
coleenp@548:                                       beg_addr, end_addr);
coleenp@548:   } else {
coleenp@548:     PSParallelCompact::adjust_pointer(klass_addr(), beg_addr, end_addr);
coleenp@548:   }
duke@435: }
stefank@2314: 
stefank@2314: #endif // SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP