author | dlong |
Tue, 06 Nov 2018 16:04:50 -0800 | |
changeset 52431 | b0af758a092c |
parent 52141 | de6dc206a92b |
child 54669 | ad45b3802d4e |
permissions | -rw-r--r-- |
50113 | 1 |
/* |
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* Copyright (c) 2014, 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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#include "precompiled.hpp" |
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#include "aot/aotLoader.hpp" |
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db0c3952de52
8209645: Split ClassLoaderData and ClassLoaderDataGraph into separate files
coleenp
parents:
50113
diff
changeset
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#include "classfile/classLoaderDataGraph.hpp" |
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#include "classfile/stringTable.hpp" |
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#include "gc/shared/strongRootsScope.hpp" |
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#include "jfr/leakprofiler/utilities/unifiedOop.hpp" |
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#include "jfr/leakprofiler/checkpoint/rootResolver.hpp" |
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#include "memory/iterator.hpp" |
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#include "oops/klass.hpp" |
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#include "oops/markOop.hpp" |
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#include "oops/oop.hpp" |
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#include "prims/jvmtiThreadState.hpp" |
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#include "runtime/frame.inline.hpp" |
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#include "runtime/mutexLocker.hpp" |
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#include "runtime/threadSMR.inline.hpp" |
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#include "runtime/vframe_hp.hpp" |
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#include "services/management.hpp" |
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#include "utilities/growableArray.hpp" |
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class ReferenceLocateClosure : public OopClosure { |
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protected: |
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RootCallback& _callback; |
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RootCallbackInfo _info; |
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bool _complete; |
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void do_oop_shared(const void* ref); |
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public: |
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ReferenceLocateClosure(RootCallback& callback, |
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OldObjectRoot::System system, |
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OldObjectRoot::Type type, |
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const void* context) : _callback(callback), |
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_info(), |
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_complete(false) { |
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_info._high = NULL; |
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_info._low = NULL; |
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_info._system = system; |
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_info._type = type; |
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_info._context = context; |
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} |
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virtual void do_oop(oop* ref); |
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virtual void do_oop(narrowOop* ref); |
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bool complete() const { |
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return _complete; |
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} |
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}; |
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void ReferenceLocateClosure::do_oop_shared(const void* ref) { |
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assert(ref != NULL, "invariant"); |
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if (!_complete) { |
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_info._high = ref; |
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_complete = _callback.process(_info); |
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} |
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} |
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void ReferenceLocateClosure::do_oop(oop* ref) { |
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do_oop_shared(ref); |
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} |
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void ReferenceLocateClosure::do_oop(narrowOop* ref) { |
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do_oop_shared(ref); |
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} |
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class ReferenceToRootClosure : public StackObj { |
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private: |
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RootCallback& _callback; |
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RootCallbackInfo _info; |
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bool _complete; |
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bool do_cldg_roots(); |
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bool do_object_synchronizer_roots(); |
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bool do_universe_roots(); |
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bool do_jni_handle_roots(); |
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bool do_jvmti_roots(); |
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bool do_system_dictionary_roots(); |
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bool do_management_roots(); |
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bool do_string_table_roots(); |
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bool do_aot_loader_roots(); |
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bool do_roots(); |
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public: |
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ReferenceToRootClosure(RootCallback& callback) : _callback(callback), |
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_info(), |
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_complete(false) { |
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_info._high = NULL; |
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_info._low = NULL; |
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_info._context = NULL; |
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_info._system = OldObjectRoot::_system_undetermined; |
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_info._type = OldObjectRoot::_type_undetermined; |
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assert_locked_or_safepoint(Threads_lock); |
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do_roots(); |
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} |
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bool complete() const { |
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return _complete; |
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} |
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}; |
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bool ReferenceToRootClosure::do_cldg_roots() { |
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assert(!complete(), "invariant"); |
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ReferenceLocateClosure rlc(_callback, OldObjectRoot::_class_loader_data, OldObjectRoot::_type_undetermined, NULL); |
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de6dc206a92b
8210330: Make CLD claiming allow multiple claim bits
eosterlund
parents:
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changeset
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CLDToOopClosure cldt_closure(&rlc, ClassLoaderData::_claim_strong); |
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ClassLoaderDataGraph::always_strong_cld_do(&cldt_closure); |
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return rlc.complete(); |
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} |
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bool ReferenceToRootClosure::do_object_synchronizer_roots() { |
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assert(!complete(), "invariant"); |
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ReferenceLocateClosure rlc(_callback, OldObjectRoot::_object_synchronizer, OldObjectRoot::_type_undetermined, NULL); |
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ObjectSynchronizer::oops_do(&rlc); |
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return rlc.complete(); |
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} |
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bool ReferenceToRootClosure::do_universe_roots() { |
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assert(!complete(), "invariant"); |
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ReferenceLocateClosure rlc(_callback, OldObjectRoot::_universe, OldObjectRoot::_type_undetermined, NULL); |
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Universe::oops_do(&rlc); |
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return rlc.complete(); |
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} |
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bool ReferenceToRootClosure::do_jni_handle_roots() { |
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assert(!complete(), "invariant"); |
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ReferenceLocateClosure rlc(_callback, OldObjectRoot::_global_jni_handles, OldObjectRoot::_global_jni_handle, NULL); |
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JNIHandles::oops_do(&rlc); |
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return rlc.complete(); |
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} |
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bool ReferenceToRootClosure::do_jvmti_roots() { |
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assert(!complete(), "invariant"); |
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ReferenceLocateClosure rlc(_callback, OldObjectRoot::_jvmti, OldObjectRoot::_global_jni_handle, NULL); |
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JvmtiExport::oops_do(&rlc); |
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return rlc.complete(); |
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} |
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bool ReferenceToRootClosure::do_system_dictionary_roots() { |
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assert(!complete(), "invariant"); |
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ReferenceLocateClosure rlc(_callback, OldObjectRoot::_system_dictionary, OldObjectRoot::_type_undetermined, NULL); |
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SystemDictionary::oops_do(&rlc); |
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return rlc.complete(); |
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} |
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bool ReferenceToRootClosure::do_management_roots() { |
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assert(!complete(), "invariant"); |
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ReferenceLocateClosure rlc(_callback, OldObjectRoot::_management, OldObjectRoot::_type_undetermined, NULL); |
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Management::oops_do(&rlc); |
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return rlc.complete(); |
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} |
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bool ReferenceToRootClosure::do_string_table_roots() { |
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assert(!complete(), "invariant"); |
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ReferenceLocateClosure rlc(_callback, OldObjectRoot::_string_table, OldObjectRoot::_type_undetermined, NULL); |
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StringTable::oops_do(&rlc); |
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return rlc.complete(); |
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} |
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bool ReferenceToRootClosure::do_aot_loader_roots() { |
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assert(!complete(), "invariant"); |
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ReferenceLocateClosure rcl(_callback, OldObjectRoot::_aot, OldObjectRoot::_type_undetermined, NULL); |
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AOTLoader::oops_do(&rcl); |
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return rcl.complete(); |
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} |
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bool ReferenceToRootClosure::do_roots() { |
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assert(!complete(), "invariant"); |
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assert(OldObjectRoot::_system_undetermined == _info._system, "invariant"); |
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assert(OldObjectRoot::_type_undetermined == _info._type, "invariant"); |
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if (do_cldg_roots()) { |
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_complete = true; |
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return true; |
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} |
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if (do_object_synchronizer_roots()) { |
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_complete = true; |
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return true; |
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} |
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if (do_universe_roots()) { |
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_complete = true; |
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return true; |
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} |
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if (do_jni_handle_roots()) { |
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_complete = true; |
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return true; |
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} |
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if (do_jvmti_roots()) { |
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_complete = true; |
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return true; |
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} |
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if (do_system_dictionary_roots()) { |
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_complete = true; |
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return true; |
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} |
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if (do_management_roots()) { |
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_complete = true; |
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return true; |
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} |
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if (do_string_table_roots()) { |
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_complete = true; |
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return true; |
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} |
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if (do_aot_loader_roots()) { |
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_complete = true; |
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return true; |
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} |
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return false; |
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} |
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class ReferenceToThreadRootClosure : public StackObj { |
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private: |
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RootCallback& _callback; |
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bool _complete; |
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bool do_java_threads_oops(JavaThread* jt); |
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bool do_thread_roots(JavaThread* jt); |
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bool do_thread_stack_fast(JavaThread* jt); |
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bool do_thread_stack_detailed(JavaThread* jt); |
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bool do_thread_jni_handles(JavaThread* jt); |
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bool do_thread_handle_area(JavaThread* jt); |
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public: |
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ReferenceToThreadRootClosure(RootCallback& callback) :_callback(callback), _complete(false) { |
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assert_locked_or_safepoint(Threads_lock); |
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for (JavaThreadIteratorWithHandle jtiwh; JavaThread *jt = jtiwh.next(); ) { |
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if (do_thread_roots(jt)) { |
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return; |
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} |
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} |
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} |
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bool complete() const { |
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return _complete; |
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} |
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}; |
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bool ReferenceToThreadRootClosure::do_thread_handle_area(JavaThread* jt) { |
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assert(jt != NULL, "invariant"); |
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assert(!complete(), "invariant"); |
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ReferenceLocateClosure rcl(_callback, OldObjectRoot::_threads, OldObjectRoot::_handle_area, jt); |
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jt->handle_area()->oops_do(&rcl); |
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return rcl.complete(); |
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} |
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bool ReferenceToThreadRootClosure::do_thread_jni_handles(JavaThread* jt) { |
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assert(jt != NULL, "invariant"); |
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assert(!complete(), "invariant"); |
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ReferenceLocateClosure rcl(_callback, OldObjectRoot::_threads, OldObjectRoot::_local_jni_handle, jt); |
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jt->active_handles()->oops_do(&rcl); |
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return rcl.complete(); |
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} |
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bool ReferenceToThreadRootClosure::do_thread_stack_fast(JavaThread* jt) { |
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assert(jt != NULL, "invariant"); |
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assert(!complete(), "invariant"); |
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if (_callback.entries() == 0) { |
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_complete = true; |
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return true; |
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} |
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RootCallbackInfo info; |
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info._high = NULL; |
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info._low = NULL; |
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info._context = jt; |
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info._system = OldObjectRoot::_threads; |
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info._type = OldObjectRoot::_stack_variable; |
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for (int i = 0; i < _callback.entries(); ++i) { |
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const address adr = (address)_callback.at(i); |
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if (jt->is_in_usable_stack(adr)) { |
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info._high = adr; |
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_complete = _callback.process(info); |
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if (_complete) { |
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return true; |
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} |
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} |
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} |
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assert(!complete(), "invariant"); |
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return false; |
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} |
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bool ReferenceToThreadRootClosure::do_thread_stack_detailed(JavaThread* jt) { |
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assert(jt != NULL, "invariant"); |
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assert(!complete(), "invariant"); |
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ReferenceLocateClosure rcl(_callback, OldObjectRoot::_threads, OldObjectRoot::_stack_variable, jt); |
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324 |
if (jt->has_last_Java_frame()) { |
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// traverse the registered growable array gc_array |
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// can't do this as it is not reachable from outside |
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328 |
// Traverse the monitor chunks |
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MonitorChunk* chunk = jt->monitor_chunks(); |
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for (; chunk != NULL; chunk = chunk->next()) { |
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chunk->oops_do(&rcl); |
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} |
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333 |
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if (rcl.complete()) { |
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return true; |
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} |
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337 |
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338 |
// Traverse the execution stack |
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for (StackFrameStream fst(jt); !fst.is_done(); fst.next()) { |
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fst.current()->oops_do(&rcl, NULL, fst.register_map()); |
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} |
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} // last java frame |
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if (rcl.complete()) { |
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return true; |
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} |
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348 |
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349 |
GrowableArray<jvmtiDeferredLocalVariableSet*>* const list = jt->deferred_locals(); |
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350 |
if (list != NULL) { |
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351 |
for (int i = 0; i < list->length(); i++) { |
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list->at(i)->oops_do(&rcl); |
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} |
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} |
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355 |
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if (rcl.complete()) { |
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return true; |
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} |
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359 |
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360 |
// Traverse instance variables at the end since the GC may be moving things |
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// around using this function |
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362 |
/* |
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363 |
* // can't reach these oop* from the outside |
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364 |
f->do_oop((oop*) &_threadObj); |
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f->do_oop((oop*) &_vm_result); |
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366 |
f->do_oop((oop*) &_exception_oop); |
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367 |
f->do_oop((oop*) &_pending_async_exception); |
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368 |
*/ |
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369 |
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370 |
JvmtiThreadState* const jvmti_thread_state = jt->jvmti_thread_state(); |
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371 |
if (jvmti_thread_state != NULL) { |
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372 |
jvmti_thread_state->oops_do(&rcl); |
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373 |
} |
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374 |
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375 |
return rcl.complete(); |
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376 |
} |
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377 |
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378 |
bool ReferenceToThreadRootClosure::do_java_threads_oops(JavaThread* jt) { |
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379 |
assert(jt != NULL, "invariant"); |
|
380 |
assert(!complete(), "invariant"); |
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381 |
||
382 |
ReferenceLocateClosure rcl(_callback, OldObjectRoot::_threads, OldObjectRoot::_global_jni_handle, jt); |
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383 |
jt->oops_do(&rcl, NULL); |
|
384 |
return rcl.complete(); |
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385 |
} |
|
386 |
||
387 |
bool ReferenceToThreadRootClosure::do_thread_roots(JavaThread* jt) { |
|
388 |
assert(jt != NULL, "invariant"); |
|
389 |
||
390 |
if (do_thread_stack_fast(jt)) { |
|
391 |
_complete = true; |
|
392 |
return true; |
|
393 |
} |
|
394 |
||
395 |
if (do_thread_jni_handles(jt)) { |
|
396 |
_complete = true; |
|
397 |
return true; |
|
398 |
} |
|
399 |
||
400 |
if (do_thread_handle_area(jt)) { |
|
401 |
_complete = true; |
|
402 |
return true; |
|
403 |
} |
|
404 |
||
405 |
if (do_thread_stack_detailed(jt)) { |
|
406 |
_complete = true; |
|
407 |
return true; |
|
408 |
} |
|
409 |
||
410 |
return false; |
|
411 |
} |
|
412 |
||
413 |
class RootResolverMarkScope : public MarkScope { |
|
414 |
}; |
|
415 |
||
416 |
void RootResolver::resolve(RootCallback& callback) { |
|
417 |
||
418 |
// Need to clear cld claim bit before starting |
|
419 |
ClassLoaderDataGraph::clear_claimed_marks(); |
|
420 |
RootResolverMarkScope mark_scope; |
|
421 |
||
422 |
// thread local roots |
|
423 |
ReferenceToThreadRootClosure rtrc(callback); |
|
424 |
if (rtrc.complete()) { |
|
425 |
return; |
|
426 |
} |
|
427 |
// system global roots |
|
428 |
ReferenceToRootClosure rrc(callback); |
|
429 |
} |