1 /* 2 * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_JFR_RECORDER_REPOSITORY_JFRCHUNKWRITER_HPP 26 #define SHARE_VM_JFR_RECORDER_REPOSITORY_JFRCHUNKWRITER_HPP 27 28 #include "jfr/writers/jfrStorageAdapter.hpp" 29 #include "jfr/writers/jfrStreamWriterHost.inline.hpp" 30 #include "jfr/writers/jfrWriterHost.inline.hpp" 31 32 typedef MallocAdapter<M> JfrStreamBuffer; // 1 mb buffered writes 33 typedef StreamWriterHost<JfrStreamBuffer, JfrCHeapObj> JfrBufferedStreamWriter; 34 typedef WriterHost<BigEndianEncoder, CompressedIntegerEncoder, JfrBufferedStreamWriter> JfrChunkWriterBase; 35 36 class JfrChunkState; 37 38 class JfrChunkWriter : public JfrChunkWriterBase { 39 friend class JfrRepository; 40 private: 41 JfrChunkState* _chunkstate; 42 43 bool open(); 44 size_t close(intptr_t metadata_offset); 45 void write_header(intptr_t metadata_offset); 46 void set_chunk_path(const char* chunk_path); 47 48 public: 49 JfrChunkWriter(); 50 bool initialize(); 51 intptr_t size_written() const; 52 intptr_t previous_checkpoint_offset() const; 53 void set_previous_checkpoint_offset(intptr_t offset); 54 void time_stamp_chunk_now(); 55 }; 56 57 #endif // SHARE_VM_JFR_RECORDER_REPOSITORY_JFRCHUNKWRITER_HPP