| /* |
| * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #ifndef SHARE_GC_Z_ZROOTSITERATOR_HPP |
| #define SHARE_GC_Z_ZROOTSITERATOR_HPP |
| |
| #include "gc/shared/oopStorageParState.hpp" |
| #include "gc/shared/suspendibleThreadSet.hpp" |
| #include "memory/allocation.hpp" |
| #include "memory/iterator.hpp" |
| #include "runtime/thread.hpp" |
| #include "utilities/globalDefinitions.hpp" |
| |
| class ZRootsIteratorClosure : public OopClosure { |
| public: |
| virtual void do_thread(Thread* thread) {} |
| }; |
| |
| typedef OopStorage::ParState<true /* concurrent */, false /* is_const */> ZOopStorageIterator; |
| |
| template <typename T, void (T::*F)(ZRootsIteratorClosure*)> |
| class ZSerialOopsDo { |
| private: |
| T* const _iter; |
| volatile bool _claimed; |
| |
| public: |
| ZSerialOopsDo(T* iter); |
| void oops_do(ZRootsIteratorClosure* cl); |
| }; |
| |
| template <typename T, void (T::*F)(ZRootsIteratorClosure*)> |
| class ZParallelOopsDo { |
| private: |
| T* const _iter; |
| volatile bool _completed; |
| |
| public: |
| ZParallelOopsDo(T* iter); |
| void oops_do(ZRootsIteratorClosure* cl); |
| }; |
| |
| template <typename T, void (T::*F)(BoolObjectClosure*, ZRootsIteratorClosure*)> |
| class ZSerialWeakOopsDo { |
| private: |
| T* const _iter; |
| volatile bool _claimed; |
| |
| public: |
| ZSerialWeakOopsDo(T* iter); |
| void weak_oops_do(BoolObjectClosure* is_alive, ZRootsIteratorClosure* cl); |
| }; |
| |
| template <typename T, void (T::*F)(BoolObjectClosure*, ZRootsIteratorClosure*)> |
| class ZParallelWeakOopsDo { |
| private: |
| T* const _iter; |
| volatile bool _completed; |
| |
| public: |
| ZParallelWeakOopsDo(T* iter); |
| void weak_oops_do(BoolObjectClosure* is_alive, ZRootsIteratorClosure* cl); |
| }; |
| |
| class ZRootsIterator { |
| private: |
| bool _visit_jvmti_weak_export; |
| |
| void do_universe(ZRootsIteratorClosure* cl); |
| void do_object_synchronizer(ZRootsIteratorClosure* cl); |
| void do_management(ZRootsIteratorClosure* cl); |
| void do_jvmti_export(ZRootsIteratorClosure* cl); |
| void do_jvmti_weak_export(ZRootsIteratorClosure* cl); |
| void do_system_dictionary(ZRootsIteratorClosure* cl); |
| void do_threads(ZRootsIteratorClosure* cl); |
| void do_code_cache(ZRootsIteratorClosure* cl); |
| |
| ZSerialOopsDo<ZRootsIterator, &ZRootsIterator::do_universe> _universe; |
| ZSerialOopsDo<ZRootsIterator, &ZRootsIterator::do_object_synchronizer> _object_synchronizer; |
| ZSerialOopsDo<ZRootsIterator, &ZRootsIterator::do_management> _management; |
| ZSerialOopsDo<ZRootsIterator, &ZRootsIterator::do_jvmti_export> _jvmti_export; |
| ZSerialOopsDo<ZRootsIterator, &ZRootsIterator::do_jvmti_weak_export> _jvmti_weak_export; |
| ZSerialOopsDo<ZRootsIterator, &ZRootsIterator::do_system_dictionary> _system_dictionary; |
| ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_threads> _threads; |
| ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_code_cache> _code_cache; |
| |
| public: |
| ZRootsIterator(bool visit_jvmti_weak_export = false); |
| ~ZRootsIterator(); |
| |
| void oops_do(ZRootsIteratorClosure* cl); |
| }; |
| |
| class ZConcurrentRootsIterator { |
| private: |
| ZOopStorageIterator _jni_handles_iter; |
| ZOopStorageIterator _vm_handles_iter; |
| const int _cld_claim; |
| |
| void do_jni_handles(ZRootsIteratorClosure* cl); |
| void do_vm_handles(ZRootsIteratorClosure* cl); |
| void do_class_loader_data_graph(ZRootsIteratorClosure* cl); |
| |
| ZParallelOopsDo<ZConcurrentRootsIterator, &ZConcurrentRootsIterator::do_jni_handles> _jni_handles; |
| ZParallelOopsDo<ZConcurrentRootsIterator, &ZConcurrentRootsIterator::do_vm_handles> _vm_handles; |
| ZParallelOopsDo<ZConcurrentRootsIterator, &ZConcurrentRootsIterator::do_class_loader_data_graph> _class_loader_data_graph; |
| |
| public: |
| ZConcurrentRootsIterator(int cld_claim); |
| ~ZConcurrentRootsIterator(); |
| |
| void oops_do(ZRootsIteratorClosure* cl); |
| }; |
| |
| class ZConcurrentRootsIteratorClaimStrong : public ZConcurrentRootsIterator { |
| public: |
| ZConcurrentRootsIteratorClaimStrong() : |
| ZConcurrentRootsIterator(ClassLoaderData::_claim_strong) {} |
| }; |
| |
| class ZConcurrentRootsIteratorClaimOther : public ZConcurrentRootsIterator { |
| public: |
| ZConcurrentRootsIteratorClaimOther() : |
| ZConcurrentRootsIterator(ClassLoaderData::_claim_other) {} |
| }; |
| |
| class ZConcurrentRootsIteratorClaimNone : public ZConcurrentRootsIterator { |
| public: |
| ZConcurrentRootsIteratorClaimNone() : |
| ZConcurrentRootsIterator(ClassLoaderData::_claim_none) {} |
| }; |
| |
| class ZWeakRootsIterator { |
| private: |
| void do_jvmti_weak_export(BoolObjectClosure* is_alive, ZRootsIteratorClosure* cl); |
| void do_jfr_weak(BoolObjectClosure* is_alive, ZRootsIteratorClosure* cl); |
| |
| ZSerialWeakOopsDo<ZWeakRootsIterator, &ZWeakRootsIterator::do_jvmti_weak_export> _jvmti_weak_export; |
| ZSerialWeakOopsDo<ZWeakRootsIterator, &ZWeakRootsIterator::do_jfr_weak> _jfr_weak; |
| |
| public: |
| ZWeakRootsIterator(); |
| ~ZWeakRootsIterator(); |
| |
| void weak_oops_do(BoolObjectClosure* is_alive, ZRootsIteratorClosure* cl); |
| void oops_do(ZRootsIteratorClosure* cl); |
| }; |
| |
| class ZConcurrentWeakRootsIterator { |
| private: |
| ZOopStorageIterator _vm_weak_handles_iter; |
| ZOopStorageIterator _jni_weak_handles_iter; |
| ZOopStorageIterator _string_table_iter; |
| ZOopStorageIterator _resolved_method_table_iter; |
| |
| void do_vm_weak_handles(ZRootsIteratorClosure* cl); |
| void do_jni_weak_handles(ZRootsIteratorClosure* cl); |
| void do_string_table(ZRootsIteratorClosure* cl); |
| void do_resolved_method_table(ZRootsIteratorClosure* cl); |
| |
| ZParallelOopsDo<ZConcurrentWeakRootsIterator, &ZConcurrentWeakRootsIterator::do_vm_weak_handles> _vm_weak_handles; |
| ZParallelOopsDo<ZConcurrentWeakRootsIterator, &ZConcurrentWeakRootsIterator::do_jni_weak_handles> _jni_weak_handles; |
| ZParallelOopsDo<ZConcurrentWeakRootsIterator, &ZConcurrentWeakRootsIterator::do_string_table> _string_table; |
| ZParallelOopsDo<ZConcurrentWeakRootsIterator, &ZConcurrentWeakRootsIterator::do_resolved_method_table> _resolved_method_table; |
| |
| public: |
| ZConcurrentWeakRootsIterator(); |
| ~ZConcurrentWeakRootsIterator(); |
| |
| void oops_do(ZRootsIteratorClosure* cl); |
| }; |
| |
| #endif // SHARE_GC_Z_ZROOTSITERATOR_HPP |