Mercurial > hg > graal-compiler
view src/share/vm/oops/oop.pcgc.inline.hpp @ 3153:5ca1332171c8
Fixed an issue in the HotSpot code for rethrowing an exception at deopt (wrong values on the expression stack caused a crash when GC and deopt happened at the same time).
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Tue, 05 Jul 2011 18:55:22 +0200 |
parents | e5383553fd4e |
children | da91efe96a93 |
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/* * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP #define SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP #ifndef SERIALGC #include "gc_implementation/parNew/parNewGeneration.hpp" #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp" #include "gc_implementation/parallelScavenge/psCompactionManager.hpp" #include "gc_implementation/parallelScavenge/psParallelCompact.hpp" #include "gc_implementation/parallelScavenge/psScavenge.hpp" #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" #endif inline void oopDesc::update_contents(ParCompactionManager* cm) { // The klass field must be updated before anything else // can be done. DEBUG_ONLY(klassOopDesc* original_klass = klass()); // Can the option to update and/or copy be moved up in the // call chain to avoid calling into here? if (PSParallelCompact::should_update_klass(klass())) { update_header(); assert(klass()->is_klass(), "Not updated correctly"); } else { assert(klass()->is_klass(), "Not updated"); } Klass* new_klass = blueprint(); if (!new_klass->oop_is_typeArray()) { // It might contain oops beyond the header, so take the virtual call. new_klass->oop_update_pointers(cm, this); } // Else skip it. The typeArrayKlass in the header never needs scavenging. } inline void oopDesc::follow_contents(ParCompactionManager* cm) { assert (PSParallelCompact::mark_bitmap()->is_marked(this), "should be marked"); blueprint()->oop_follow_contents(cm, this); } // Used by parallel old GC. inline void oopDesc::follow_header(ParCompactionManager* cm) { if (UseCompressedOops) { PSParallelCompact::mark_and_push(cm, compressed_klass_addr()); } else { PSParallelCompact::mark_and_push(cm, klass_addr()); } } inline oop oopDesc::forward_to_atomic(oop p) { assert(ParNewGeneration::is_legal_forward_ptr(p), "illegal forwarding pointer value."); markOop oldMark = mark(); markOop forwardPtrMark = markOopDesc::encode_pointer_as_mark(p); markOop curMark; assert(forwardPtrMark->decode_pointer() == p, "encoding must be reversable"); assert(sizeof(markOop) == sizeof(intptr_t), "CAS below requires this."); while (!oldMark->is_marked()) { curMark = (markOop)Atomic::cmpxchg_ptr(forwardPtrMark, &_mark, oldMark); assert(is_forwarded(), "object should have been forwarded"); if (curMark == oldMark) { return NULL; } // If the CAS was unsuccessful then curMark->is_marked() // should return true as another thread has CAS'd in another // forwarding pointer. oldMark = curMark; } return forwardee(); } inline void oopDesc::update_header() { if (UseCompressedOops) { PSParallelCompact::adjust_pointer(compressed_klass_addr()); } else { PSParallelCompact::adjust_pointer(klass_addr()); } } #endif // SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP