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/*
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* Copyright (c) 2012, 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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#ifndef SHARE_VM_JFR_RECORDER_STORAGE_JFRSTORAGE_HPP
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#define SHARE_VM_JFR_RECORDER_STORAGE_JFRSTORAGE_HPP
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#include "jfr/recorder/storage/jfrBuffer.hpp"
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#include "jfr/recorder/storage/jfrMemorySpace.hpp"
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#include "jfr/recorder/storage/jfrMemorySpaceRetrieval.hpp"
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class JfrChunkWriter;
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class JfrPostBox;
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class JfrStorage;
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class JfrStorageControl;
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typedef JfrMemorySpace<JfrBuffer, JfrMspaceAlternatingRetrieval, JfrStorage> JfrStorageMspace;
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typedef JfrMemorySpace<JfrBuffer, JfrThreadLocalRetrieval, JfrStorage> JfrThreadLocalMspace;
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typedef JfrMemorySpace<JfrAgeNode, JfrMspaceSequentialRetrieval, JfrStorage> JfrStorageAgeMspace;
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//
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// Responsible for providing backing storage for writing events.
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//
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class JfrStorage : public JfrCHeapObj {
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public:
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typedef JfrStorageMspace::Type Buffer;
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private:
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JfrStorageControl* _control;
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JfrStorageMspace* _global_mspace;
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JfrThreadLocalMspace* _thread_local_mspace;
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JfrStorageMspace* _transient_mspace;
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JfrStorageAgeMspace* _age_mspace;
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JfrChunkWriter& _chunkwriter;
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JfrPostBox& _post_box;
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// mspace callbacks
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void register_full(Buffer* t, Thread* thread);
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void lock();
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void unlock();
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DEBUG_ONLY(bool is_locked() const;)
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Buffer* acquire_large(size_t size, Thread* t);
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Buffer* acquire_transient(size_t size, Thread* thread);
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bool flush_regular_buffer(Buffer* const buffer, Thread* t);
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Buffer* flush_regular(Buffer* cur, const u1* cur_pos, size_t used, size_t req, bool native, Thread* t);
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Buffer* flush_large(Buffer* cur, const u1* cur_pos, size_t used, size_t req, bool native, Thread* t);
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Buffer* provision_large(Buffer* cur, const u1* cur_pos, size_t used, size_t req, bool native, Thread* t);
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void release(Buffer* buffer, Thread* t);
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size_t clear();
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size_t clear_full();
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size_t write();
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size_t write_full();
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size_t write_at_safepoint();
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size_t scavenge();
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JfrStorage(JfrChunkWriter& cw, JfrPostBox& post_box);
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~JfrStorage();
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static JfrStorage& instance();
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static JfrStorage* create(JfrChunkWriter& chunkwriter, JfrPostBox& post_box);
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bool initialize();
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static void destroy();
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public:
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static Buffer* acquire_thread_local(Thread* t, size_t size = 0);
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static void release_thread_local(Buffer* buffer, Thread* t);
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void release_large(Buffer* const buffer, Thread* t);
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static Buffer* flush(Buffer* cur, size_t used, size_t req, bool native, Thread* t);
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void discard_oldest(Thread* t);
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static JfrStorageControl& control();
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friend class JfrRecorder;
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friend class JfrRecorderService;
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template <typename, template <typename> class, typename>
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friend class JfrMemorySpace;
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};
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#endif // SHARE_VM_JFR_RECORDER_STORAGE_JFRSTORAGE_HPP
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