author | pliden |
Mon, 18 Mar 2019 11:50:40 +0100 | |
changeset 54170 | 8f1771ea1e39 |
parent 54006 | a421bdf22394 |
child 58273 | 08a5148e7c4e |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2018, 2019, 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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#include "precompiled.hpp" |
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#include "gc/z/zBarrierSet.hpp" |
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#include "gc/z/zBarrierSetAssembler.hpp" |
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#include "gc/z/zBarrierSetNMethod.hpp" |
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#include "gc/z/zGlobals.hpp" |
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#include "gc/z/zHeap.inline.hpp" |
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#include "gc/z/zThreadLocalData.hpp" |
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#include "runtime/thread.hpp" |
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#include "utilities/macros.hpp" |
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#ifdef COMPILER1 |
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#include "gc/z/c1/zBarrierSetC1.hpp" |
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#endif |
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#ifdef COMPILER2 |
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#include "gc/z/c2/zBarrierSetC2.hpp" |
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#endif |
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class ZBarrierSetC1; |
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class ZBarrierSetC2; |
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static BarrierSetNMethod* make_barrier_set_nmethod() { |
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// NMethod barriers are only used when class unloading is enabled |
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if (!ClassUnloading) { |
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return NULL; |
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} |
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return new ZBarrierSetNMethod(); |
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} |
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ZBarrierSet::ZBarrierSet() : |
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BarrierSet(make_barrier_set_assembler<ZBarrierSetAssembler>(), |
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make_barrier_set_c1<ZBarrierSetC1>(), |
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make_barrier_set_c2<ZBarrierSetC2>(), |
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make_barrier_set_nmethod(), |
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BarrierSet::FakeRtti(BarrierSet::ZBarrierSet)) {} |
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ZBarrierSetAssembler* ZBarrierSet::assembler() { |
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BarrierSetAssembler* const bsa = BarrierSet::barrier_set()->barrier_set_assembler(); |
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return reinterpret_cast<ZBarrierSetAssembler*>(bsa); |
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} |
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bool ZBarrierSet::barrier_needed(DecoratorSet decorators, BasicType type) { |
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assert((decorators & AS_RAW) == 0, "Unexpected decorator"); |
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assert((decorators & AS_NO_KEEPALIVE) == 0, "Unexpected decorator"); |
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//assert((decorators & ON_UNKNOWN_OOP_REF) == 0, "Unexpected decorator"); |
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if (type == T_OBJECT || type == T_ARRAY) { |
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assert((decorators & (IN_HEAP | IN_NATIVE)) != 0, "Where is reference?"); |
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// Barrier needed even when IN_NATIVE, to allow concurrent scanning. |
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return true; |
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} |
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// Barrier not needed |
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return false; |
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} |
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void ZBarrierSet::on_thread_create(Thread* thread) { |
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// Create thread local data |
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ZThreadLocalData::create(thread); |
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} |
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void ZBarrierSet::on_thread_destroy(Thread* thread) { |
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// Destroy thread local data |
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ZThreadLocalData::destroy(thread); |
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} |
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void ZBarrierSet::on_thread_attach(Thread* thread) { |
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// Set thread local address bad mask |
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ZThreadLocalData::set_address_bad_mask(thread, ZAddressBadMask); |
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} |
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void ZBarrierSet::on_thread_detach(Thread* thread) { |
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// Flush and free any remaining mark stacks |
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ZHeap::heap()->mark_flush_and_free(thread); |
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} |