91 lines
3.0 KiB
C++
91 lines
3.0 KiB
C++
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/*
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* Copyright (c) 2019, Red Hat, Inc. All rights reserved.
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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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#include "precompiled.hpp"
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#include "classfile/classLoaderDataGraph.hpp"
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#include "classfile/systemDictionary.hpp"
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#include "code/codeCache.hpp"
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#include "gc/shenandoah/shenandoahHeap.hpp"
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#include "gc/shenandoah/shenandoahPhaseTimings.hpp"
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#include "gc/shenandoah/shenandoahRootVerifier.hpp"
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#include "gc/shenandoah/shenandoahStringDedup.hpp"
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#include "gc/shared/weakProcessor.inline.hpp"
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#include "memory/universe.hpp"
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#include "runtime/thread.hpp"
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#include "services/management.hpp"
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#include "utilities/debug.hpp"
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// Check for overflow of number of root types.
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STATIC_ASSERT((static_cast<uint>(ShenandoahRootVerifier::AllRoots) + 1) > static_cast<uint>(ShenandoahRootVerifier::AllRoots));
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ShenandoahRootVerifier::ShenandoahRootVerifier() : _types(AllRoots) {
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}
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void ShenandoahRootVerifier::excludes(RootTypes types) {
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_types = static_cast<ShenandoahRootVerifier::RootTypes>(static_cast<uint>(_types) & (~static_cast<uint>(types)));
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}
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bool ShenandoahRootVerifier::verify(RootTypes type) const {
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return (_types & type) != 0;
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}
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void ShenandoahRootVerifier::oops_do(OopClosure* oops) {
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CodeBlobToOopClosure blobs(oops, !CodeBlobToOopClosure::FixRelocations);
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if (verify(CodeRoots)) {
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CodeCache::blobs_do(&blobs);
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}
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if (verify(CLDGRoots)) {
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CLDToOopClosure clds(oops, ClassLoaderData::_claim_strong);
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ClassLoaderDataGraph::cld_do(&clds);
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}
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if (verify(SerialRoots)) {
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Universe::oops_do(oops);
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Management::oops_do(oops);
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JvmtiExport::oops_do(oops);
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JNIHandles::oops_do(oops);
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ObjectSynchronizer::oops_do(oops);
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SystemDictionary::oops_do(oops);
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}
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if (verify(WeakRoots)) {
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AlwaysTrueClosure always_true;
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WeakProcessor::weak_oops_do(&always_true, oops);
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}
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if (ShenandoahStringDedup::is_enabled() && verify(StringDedupRoots)) {
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ShenandoahStringDedup::oops_do_slow(oops);
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}
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if (verify(ThreadRoots)) {
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// Do thread roots the last. This allows verification code to find
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// any broken objects from those special roots first, not the accidental
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// dangling reference from the thread root.
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Threads::possibly_parallel_oops_do(false, oops, &blobs);
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}
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}
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