| /* |
| * Copyright (c) 2015, 2019, Red Hat, Inc. All rights reserved. |
| * |
| * 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_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP |
| #define SHARE_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP |
| |
| #include "code/codeCache.hpp" |
| #include "gc/shared/oopStorageParState.hpp" |
| #include "gc/shenandoah/shenandoahCodeRoots.hpp" |
| #include "gc/shenandoah/shenandoahHeap.hpp" |
| #include "gc/shenandoah/shenandoahPhaseTimings.hpp" |
| #include "gc/shenandoah/shenandoahSharedVariables.hpp" |
| #include "memory/iterator.hpp" |
| |
| class ShenandoahSerialRoot { |
| public: |
| typedef void (*OopsDo)(OopClosure*); |
| private: |
| ShenandoahSharedFlag _claimed; |
| const OopsDo _oops_do; |
| const ShenandoahPhaseTimings::GCParPhases _phase; |
| |
| public: |
| ShenandoahSerialRoot(OopsDo oops_do, ShenandoahPhaseTimings::GCParPhases); |
| void oops_do(OopClosure* cl, uint worker_id); |
| }; |
| |
| class ShenandoahSerialRoots { |
| private: |
| ShenandoahSerialRoot _universe_root; |
| ShenandoahSerialRoot _object_synchronizer_root; |
| ShenandoahSerialRoot _management_root; |
| ShenandoahSerialRoot _system_dictionary_root; |
| ShenandoahSerialRoot _jvmti_root; |
| public: |
| ShenandoahSerialRoots(); |
| void oops_do(OopClosure* cl, uint worker_id); |
| }; |
| |
| class ShenandoahWeakSerialRoot { |
| typedef void (*WeakOopsDo)(BoolObjectClosure*, OopClosure*); |
| private: |
| ShenandoahSharedFlag _claimed; |
| const WeakOopsDo _weak_oops_do; |
| const ShenandoahPhaseTimings::GCParPhases _phase; |
| |
| public: |
| ShenandoahWeakSerialRoot(WeakOopsDo oops_do, ShenandoahPhaseTimings::GCParPhases); |
| void weak_oops_do(BoolObjectClosure* is_alive, OopClosure* keep_alive, uint worker_id); |
| }; |
| |
| #if INCLUDE_JVMTI |
| class ShenandoahJVMTIWeakRoot : public ShenandoahWeakSerialRoot { |
| public: |
| ShenandoahJVMTIWeakRoot(); |
| }; |
| #endif // INCLUDE_JVMTI |
| |
| #if INCLUDE_JFR |
| class ShenandoahJFRWeakRoot : public ShenandoahWeakSerialRoot { |
| public: |
| ShenandoahJFRWeakRoot(); |
| }; |
| #endif // INCLUDE_JFR |
| |
| class ShenandoahSerialWeakRoots { |
| private: |
| JVMTI_ONLY(ShenandoahJVMTIWeakRoot _jvmti_weak_roots;) |
| JFR_ONLY(ShenandoahJFRWeakRoot _jfr_weak_roots;) |
| public: |
| void weak_oops_do(BoolObjectClosure* is_alive, OopClosure* keep_alive, uint worker_id); |
| void weak_oops_do(OopClosure* cl, uint worker_id); |
| }; |
| |
| template <bool CONCURRENT> |
| class ShenandoahVMRoot { |
| private: |
| OopStorage::ParState<CONCURRENT, false /* is_const */> _itr; |
| const ShenandoahPhaseTimings::GCParPhases _phase; |
| public: |
| ShenandoahVMRoot(OopStorage* storage, ShenandoahPhaseTimings::GCParPhases phase); |
| |
| template <typename Closure> |
| void oops_do(Closure* cl, uint worker_id); |
| }; |
| |
| template <bool CONCURRENT> |
| class ShenandoahWeakRoot : public ShenandoahVMRoot<CONCURRENT> { |
| public: |
| ShenandoahWeakRoot(OopStorage* storage, ShenandoahPhaseTimings::GCParPhases phase); |
| }; |
| |
| template <> |
| class ShenandoahWeakRoot<false /*concurrent*/> { |
| private: |
| OopStorage::ParState<false /*concurrent*/, false /*is_const*/> _itr; |
| const ShenandoahPhaseTimings::GCParPhases _phase; |
| |
| public: |
| ShenandoahWeakRoot(OopStorage* storage, ShenandoahPhaseTimings::GCParPhases phase); |
| |
| template <typename IsAliveClosure, typename KeepAliveClosure> |
| void weak_oops_do(IsAliveClosure* is_alive, KeepAliveClosure* keep_alive, uint worker_id); |
| }; |
| |
| template <bool CONCURRENT> |
| class ShenandoahWeakRoots { |
| private: |
| ShenandoahWeakRoot<CONCURRENT> _jni_roots; |
| ShenandoahWeakRoot<CONCURRENT> _string_table_roots; |
| ShenandoahWeakRoot<CONCURRENT> _resolved_method_table_roots; |
| ShenandoahWeakRoot<CONCURRENT> _vm_roots; |
| |
| public: |
| ShenandoahWeakRoots(); |
| |
| template <typename Closure> |
| void oops_do(Closure* cl, uint worker_id = 0); |
| }; |
| |
| template <> |
| class ShenandoahWeakRoots<false /*concurrent */> { |
| private: |
| ShenandoahWeakRoot<false /*concurrent*/> _jni_roots; |
| ShenandoahWeakRoot<false /*concurrent*/> _string_table_roots; |
| ShenandoahWeakRoot<false /*concurrent*/> _resolved_method_table_roots; |
| ShenandoahWeakRoot<false /*concurrent*/> _vm_roots; |
| public: |
| ShenandoahWeakRoots(); |
| |
| template <typename Closure> |
| void oops_do(Closure* cl, uint worker_id = 0); |
| |
| template <typename IsAliveClosure, typename KeepAliveClosure> |
| void weak_oops_do(IsAliveClosure* is_alive, KeepAliveClosure* keep_alive, uint worker_id); |
| }; |
| |
| template <bool CONCURRENT> |
| class ShenandoahVMRoots { |
| private: |
| ShenandoahVMRoot<CONCURRENT> _jni_handle_roots; |
| ShenandoahVMRoot<CONCURRENT> _vm_global_roots; |
| |
| public: |
| ShenandoahVMRoots(); |
| |
| template <typename T> |
| void oops_do(T* cl, uint worker_id = 0); |
| }; |
| |
| class ShenandoahThreadRoots { |
| private: |
| const bool _is_par; |
| public: |
| ShenandoahThreadRoots(bool is_par); |
| ~ShenandoahThreadRoots(); |
| |
| void oops_do(OopClosure* oops_cl, CodeBlobClosure* code_cl, uint worker_id); |
| void threads_do(ThreadClosure* tc, uint worker_id); |
| }; |
| |
| class ShenandoahStringDedupRoots { |
| public: |
| ShenandoahStringDedupRoots(); |
| ~ShenandoahStringDedupRoots(); |
| |
| void oops_do(BoolObjectClosure* is_alive, OopClosure* keep_alive, uint worker_id); |
| }; |
| |
| template <typename ITR> |
| class ShenandoahCodeCacheRoots { |
| private: |
| ITR _coderoots_iterator; |
| public: |
| ShenandoahCodeCacheRoots(); |
| ~ShenandoahCodeCacheRoots(); |
| |
| void code_blobs_do(CodeBlobClosure* blob_cl, uint worker_id); |
| }; |
| |
| template <bool CONCURRENT, bool SINGLE_THREADED> |
| class ShenandoahClassLoaderDataRoots { |
| public: |
| ShenandoahClassLoaderDataRoots(); |
| ~ShenandoahClassLoaderDataRoots(); |
| |
| void always_strong_cld_do(CLDClosure* clds, uint worker_id = 0); |
| void cld_do(CLDClosure* clds, uint worker_id = 0); |
| }; |
| |
| class ShenandoahRootProcessor : public StackObj { |
| private: |
| ShenandoahHeap* const _heap; |
| const ShenandoahPhaseTimings::Phase _phase; |
| public: |
| ShenandoahRootProcessor(ShenandoahPhaseTimings::Phase phase); |
| ~ShenandoahRootProcessor(); |
| |
| ShenandoahHeap* heap() const { return _heap; } |
| }; |
| |
| template <typename ITR> |
| class ShenandoahRootScanner : public ShenandoahRootProcessor { |
| private: |
| ShenandoahSerialRoots _serial_roots; |
| ShenandoahThreadRoots _thread_roots; |
| ShenandoahCodeCacheRoots<ITR> _code_roots; |
| ShenandoahVMRoots<false /*concurrent*/ > _vm_roots; |
| ShenandoahClassLoaderDataRoots<false /*concurrent*/, false /*single threaded*/> |
| _cld_roots; |
| public: |
| ShenandoahRootScanner(uint n_workers, ShenandoahPhaseTimings::Phase phase); |
| |
| // Apply oops, clds and blobs to all strongly reachable roots in the system, |
| // during class unloading cycle |
| void strong_roots_do(uint worker_id, OopClosure* cl); |
| void strong_roots_do(uint worker_id, OopClosure* oops, CLDClosure* clds, CodeBlobClosure* code, ThreadClosure* tc = NULL); |
| |
| // Apply oops, clds and blobs to all strongly reachable roots and weakly reachable |
| // roots when class unloading is disabled during this cycle |
| void roots_do(uint worker_id, OopClosure* cl); |
| void roots_do(uint worker_id, OopClosure* oops, CLDClosure* clds, CodeBlobClosure* code, ThreadClosure* tc = NULL); |
| }; |
| |
| typedef ShenandoahRootScanner<ShenandoahAllCodeRootsIterator> ShenandoahAllRootScanner; |
| typedef ShenandoahRootScanner<ShenandoahCsetCodeRootsIterator> ShenandoahCSetRootScanner; |
| |
| // This scanner is only for SH::object_iteration() and only supports single-threaded |
| // root scanning |
| class ShenandoahHeapIterationRootScanner : public ShenandoahRootProcessor { |
| private: |
| ShenandoahSerialRoots _serial_roots; |
| ShenandoahThreadRoots _thread_roots; |
| ShenandoahVMRoots<false /*concurrent*/> _vm_roots; |
| ShenandoahClassLoaderDataRoots<false /*concurrent*/, true /*single threaded*/> |
| _cld_roots; |
| ShenandoahSerialWeakRoots _serial_weak_roots; |
| ShenandoahWeakRoots<false /*concurrent*/> _weak_roots; |
| ShenandoahStringDedupRoots _dedup_roots; |
| ShenandoahCodeCacheRoots<ShenandoahAllCodeRootsIterator> _code_roots; |
| |
| public: |
| ShenandoahHeapIterationRootScanner(); |
| |
| void roots_do(OopClosure* cl); |
| void strong_roots_do(OopClosure* cl); |
| }; |
| |
| // Evacuate all roots at a safepoint |
| class ShenandoahRootEvacuator : public ShenandoahRootProcessor { |
| private: |
| ShenandoahSerialRoots _serial_roots; |
| ShenandoahVMRoots<false /*concurrent*/> _vm_roots; |
| ShenandoahClassLoaderDataRoots<false /*concurrent*/, false /*single threaded*/> |
| _cld_roots; |
| ShenandoahThreadRoots _thread_roots; |
| ShenandoahSerialWeakRoots _serial_weak_roots; |
| ShenandoahWeakRoots<false /*concurrent*/> _weak_roots; |
| ShenandoahStringDedupRoots _dedup_roots; |
| ShenandoahCodeCacheRoots<ShenandoahCsetCodeRootsIterator> _code_roots; |
| bool _include_concurrent_roots; |
| |
| public: |
| ShenandoahRootEvacuator(uint n_workers, ShenandoahPhaseTimings::Phase phase, bool include_concurrent_roots); |
| |
| void roots_do(uint worker_id, OopClosure* oops); |
| }; |
| |
| // Update all roots at a safepoint |
| class ShenandoahRootUpdater : public ShenandoahRootProcessor { |
| private: |
| ShenandoahSerialRoots _serial_roots; |
| ShenandoahVMRoots<false /*concurrent*/> _vm_roots; |
| ShenandoahClassLoaderDataRoots<false /*concurrent*/, false /*single threaded*/> |
| _cld_roots; |
| ShenandoahThreadRoots _thread_roots; |
| ShenandoahSerialWeakRoots _serial_weak_roots; |
| ShenandoahWeakRoots<false /*concurrent*/> _weak_roots; |
| ShenandoahStringDedupRoots _dedup_roots; |
| ShenandoahCodeCacheRoots<ShenandoahCsetCodeRootsIterator> _code_roots; |
| |
| public: |
| ShenandoahRootUpdater(uint n_workers, ShenandoahPhaseTimings::Phase phase); |
| |
| template<typename IsAlive, typename KeepAlive> |
| void roots_do(uint worker_id, IsAlive* is_alive, KeepAlive* keep_alive); |
| |
| void strong_roots_do(uint worker_id, OopClosure* oops_cl); |
| }; |
| |
| // Adjuster all roots at a safepoint during full gc |
| class ShenandoahRootAdjuster : public ShenandoahRootProcessor { |
| private: |
| ShenandoahSerialRoots _serial_roots; |
| ShenandoahVMRoots<false /*concurrent*/> _vm_roots; |
| ShenandoahClassLoaderDataRoots<false /*concurrent*/, false /*single threaded*/> |
| _cld_roots; |
| ShenandoahThreadRoots _thread_roots; |
| ShenandoahSerialWeakRoots _serial_weak_roots; |
| ShenandoahWeakRoots<false /*concurrent*/> _weak_roots; |
| ShenandoahStringDedupRoots _dedup_roots; |
| ShenandoahCodeCacheRoots<ShenandoahAllCodeRootsIterator> _code_roots; |
| |
| public: |
| ShenandoahRootAdjuster(uint n_workers, ShenandoahPhaseTimings::Phase phase); |
| |
| void roots_do(uint worker_id, OopClosure* oops); |
| }; |
| |
| #endif // SHARE_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP |