author | kbarrett |
Tue, 13 Feb 2018 17:36:22 -0500 | |
changeset 48966 | e6eb66d2e765 |
parent 47998 | fb0275c320a0 |
child 49347 | edb65305d3ac |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2017, 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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*/ |
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#ifndef SHARE_VM_GC_SHARED_MODREFBARRIERSET_INLINE_HPP |
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#define SHARE_VM_GC_SHARED_MODREFBARRIERSET_INLINE_HPP |
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#include "gc/shared/modRefBarrierSet.hpp" |
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#include "oops/klass.inline.hpp" |
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#include "oops/objArrayOop.hpp" |
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#include "oops/oop.hpp" |
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|
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template <DecoratorSet decorators, typename BarrierSetT> |
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template <typename T> |
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inline void ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT>:: |
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oop_store_in_heap(T* addr, oop value) { |
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BarrierSetT *bs = barrier_set_cast<BarrierSetT>(barrier_set()); |
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bs->template write_ref_field_pre<decorators>(addr); |
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Raw::oop_store(addr, value); |
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bs->template write_ref_field_post<decorators>(addr, value); |
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} |
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template <DecoratorSet decorators, typename BarrierSetT> |
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template <typename T> |
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inline oop ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT>:: |
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oop_atomic_cmpxchg_in_heap(oop new_value, T* addr, oop compare_value) { |
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BarrierSetT *bs = barrier_set_cast<BarrierSetT>(barrier_set()); |
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bs->template write_ref_field_pre<decorators>(addr); |
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oop result = Raw::oop_atomic_cmpxchg(new_value, addr, compare_value); |
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if (result == compare_value) { |
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bs->template write_ref_field_post<decorators>(addr, new_value); |
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} |
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return result; |
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} |
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template <DecoratorSet decorators, typename BarrierSetT> |
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template <typename T> |
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inline oop ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT>:: |
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oop_atomic_xchg_in_heap(oop new_value, T* addr) { |
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BarrierSetT *bs = barrier_set_cast<BarrierSetT>(barrier_set()); |
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bs->template write_ref_field_pre<decorators>(addr); |
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oop result = Raw::oop_atomic_xchg(new_value, addr); |
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bs->template write_ref_field_post<decorators>(addr, new_value); |
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return result; |
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} |
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template <DecoratorSet decorators, typename BarrierSetT> |
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template <typename T> |
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inline bool ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT>:: |
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oop_arraycopy_in_heap(arrayOop src_obj, arrayOop dst_obj, T* src, T* dst, size_t length) { |
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BarrierSetT *bs = barrier_set_cast<BarrierSetT>(barrier_set()); |
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if (!HasDecorator<decorators, ARRAYCOPY_CHECKCAST>::value) { |
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// Optimized covariant case |
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bs->write_ref_array_pre(dst, (int)length, |
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HasDecorator<decorators, AS_DEST_NOT_INITIALIZED>::value); |
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Raw::oop_arraycopy(src_obj, dst_obj, src, dst, length); |
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bs->write_ref_array((HeapWord*)dst, length); |
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} else { |
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Klass* bound = objArrayOop(dst_obj)->element_klass(); |
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T* from = src; |
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T* end = from + length; |
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for (T* p = dst; from < end; from++, p++) { |
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T element = *from; |
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if (bound->is_instanceof_or_null(element)) { |
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bs->template write_ref_field_pre<decorators>(p); |
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*p = element; |
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} else { |
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// We must do a barrier to cover the partial copy. |
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const size_t pd = pointer_delta(p, dst, (size_t)heapOopSize); |
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// pointer delta is scaled to number of elements (length field in |
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// objArrayOop) which we assume is 32 bit. |
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assert(pd == (size_t)(int)pd, "length field overflow"); |
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bs->write_ref_array((HeapWord*)dst, pd); |
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return false; |
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} |
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} |
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bs->write_ref_array((HeapWord*)dst, length); |
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} |
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return true; |
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} |
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template <DecoratorSet decorators, typename BarrierSetT> |
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inline void ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT>:: |
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clone_in_heap(oop src, oop dst, size_t size) { |
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Raw::clone(src, dst, size); |
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BarrierSetT *bs = barrier_set_cast<BarrierSetT>(barrier_set()); |
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bs->write_region(MemRegion((HeapWord*)(void*)dst, size)); |
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} |
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#endif // SHARE_VM_GC_SHARED_MODREFBARRIERSET_INLINE_HPP |