author | pliden |
Mon, 18 Mar 2019 11:50:40 +0100 | |
changeset 54170 | 8f1771ea1e39 |
parent 52939 | 9a8585f60c32 |
child 55603 | 3868dde58ebb |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, 2018, 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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#ifndef SHARE_GC_Z_ZOOPCLOSURES_INLINE_HPP |
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#define SHARE_GC_Z_ZOOPCLOSURES_INLINE_HPP |
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#include "classfile/classLoaderData.hpp" |
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#include "gc/z/zBarrier.inline.hpp" |
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#include "gc/z/zHeap.inline.hpp" |
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#include "gc/z/zOop.inline.hpp" |
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#include "gc/z/zOopClosures.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "runtime/atomic.hpp" |
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#include "utilities/debug.hpp" |
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inline void ZLoadBarrierOopClosure::do_oop(oop* p) { |
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ZBarrier::load_barrier_on_oop_field(p); |
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} |
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inline void ZLoadBarrierOopClosure::do_oop(narrowOop* p) { |
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ShouldNotReachHere(); |
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} |
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inline void ZNMethodOopClosure::do_oop(oop* p) { |
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if (ZResurrection::is_blocked()) { |
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ZBarrier::keep_alive_barrier_on_phantom_root_oop_field(p); |
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} else { |
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ZBarrier::load_barrier_on_root_oop_field(p); |
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} |
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} |
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inline void ZNMethodOopClosure::do_oop(narrowOop* p) { |
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ShouldNotReachHere(); |
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} |
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template <bool finalizable> |
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inline ZMarkBarrierOopClosure<finalizable>::ZMarkBarrierOopClosure() : |
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MetadataVisitingOopIterateClosure(finalizable ? NULL : ZHeap::heap()->reference_discoverer()) {} |
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template <bool finalizable> |
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inline void ZMarkBarrierOopClosure<finalizable>::do_oop(oop* p) { |
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ZBarrier::mark_barrier_on_oop_field(p, finalizable); |
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} |
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template <bool finalizable> |
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inline void ZMarkBarrierOopClosure<finalizable>::do_oop(narrowOop* p) { |
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ShouldNotReachHere(); |
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} |
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template <bool finalizable> |
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inline void ZMarkBarrierOopClosure<finalizable>::do_klass(Klass* k) { |
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ClassLoaderData* const cld = k->class_loader_data(); |
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ZMarkBarrierOopClosure<finalizable>::do_cld(cld); |
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} |
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template <bool finalizable> |
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inline void ZMarkBarrierOopClosure<finalizable>::do_cld(ClassLoaderData* cld) { |
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const int claim = finalizable ? ClassLoaderData::_claim_finalizable : ClassLoaderData::_claim_strong; |
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cld->oops_do(this, claim); |
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} |
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inline bool ZPhantomIsAliveObjectClosure::do_object_b(oop o) { |
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return ZBarrier::is_alive_barrier_on_phantom_oop(o); |
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} |
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inline void ZPhantomKeepAliveOopClosure::do_oop(oop* p) { |
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ZBarrier::keep_alive_barrier_on_phantom_oop_field(p); |
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} |
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inline void ZPhantomKeepAliveOopClosure::do_oop(narrowOop* p) { |
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ShouldNotReachHere(); |
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} |
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inline void ZPhantomCleanOopClosure::do_oop(oop* p) { |
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// Read the oop once, to make sure the liveness check |
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// and the later clearing uses the same value. |
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const oop obj = *(volatile oop*)p; |
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if (ZBarrier::is_alive_barrier_on_phantom_oop(obj)) { |
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ZBarrier::keep_alive_barrier_on_phantom_oop_field(p); |
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} else { |
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// The destination could have been modified/reused, in which case |
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// we don't want to clear it. However, no one could write the same |
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// oop here again (the object would be strongly live and we would |
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// not consider clearing such oops), so therefore we don't have an |
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// ABA problem here. |
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Atomic::cmpxchg(oop(NULL), p, obj); |
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} |
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} |
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inline void ZPhantomCleanOopClosure::do_oop(narrowOop* p) { |
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ShouldNotReachHere(); |
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} |
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#endif // SHARE_GC_Z_ZOOPCLOSURES_INLINE_HPP |