1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/jfr/recorder/repository/jfrRepository.hpp Mon Aug 12 18:30:40 2019 +0300
1.3 @@ -0,0 +1,73 @@
1.4 +/*
1.5 + * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +#ifndef SHARE_VM_JFR_RECORDER_REPOSITORY_JFRREPOSITORY_HPP
1.28 +#define SHARE_VM_JFR_RECORDER_REPOSITORY_JFRREPOSITORY_HPP
1.29 +
1.30 +#include "jni.h"
1.31 +#include "jfr/utilities/jfrAllocation.hpp"
1.32 +
1.33 +class JfrChunkWriter;
1.34 +class JfrPostBox;
1.35 +
1.36 +//
1.37 +// Represents the location on disk where internal files, "chunks", are stored.
1.38 +//
1.39 +// A "chunk" is a self-contained file artifact storing events and metadata that
1.40 +// has been moved out of process memory.
1.41 +//
1.42 +// Chunk files are associated with recordings and are managed at a higher level in Java.
1.43 +// Java continously keeps the VM informed about new chunk locations via set_chunk_path().
1.44 +//
1.45 +// A JfrChunkWriter will open the next chunk file which it maintains as the current chunk.
1.46 +// There is a rotation scheme in place for creating new chunks at certain intervals.
1.47 +//
1.48 +class JfrRepository : public JfrCHeapObj {
1.49 + friend class JfrRecorder;
1.50 + friend class JfrRecorderService;
1.51 + private:
1.52 + char* _path;
1.53 + JfrPostBox& _post_box;
1.54 +
1.55 + JfrRepository(JfrPostBox& post_box);
1.56 + ~JfrRepository();
1.57 +
1.58 + bool set_path(const char* path);
1.59 + void set_chunk_path(const char* path);
1.60 + bool open_chunk(bool vm_error = false);
1.61 + size_t close_chunk(jlong metadata_offset);
1.62 + void on_vm_error();
1.63 + static void notify_on_new_chunk_path();
1.64 + static JfrChunkWriter& chunkwriter();
1.65 +
1.66 + static JfrRepository& instance();
1.67 + static JfrRepository* create(JfrPostBox& post_box);
1.68 + bool initialize();
1.69 + static void destroy();
1.70 +
1.71 + public:
1.72 + static void set_path(jstring location, JavaThread* jt);
1.73 + static void set_chunk_path(jstring path, JavaThread* jt);
1.74 +};
1.75 +
1.76 +#endif // SHARE_VM_JFR_RECORDER_REPOSITORY_JFRREPOSITORY_HPP
