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src/share/vm/jfr/writers/jfrStreamWriterHost.hpp@b985cbb00e68 (annotated)
src/share/vm/jfr/writers/jfrStreamWriterHost.hpp
Mon, 12 Aug 2019 18:30:40 +0300
- author
- apetushkov
- date
- Mon, 12 Aug 2019 18:30:40 +0300
- changeset 9858
- b985cbb00e68
- child 9947
- db357034b763
- permissions
- -rw-r--r--
8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens
| apetushkov@9858 | 1 | /* |
| apetushkov@9858 | 2 | * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. |
| apetushkov@9858 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| apetushkov@9858 | 4 | * |
| apetushkov@9858 | 5 | * This code is free software; you can redistribute it and/or modify it |
| apetushkov@9858 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| apetushkov@9858 | 7 | * published by the Free Software Foundation. |
| apetushkov@9858 | 8 | * |
| apetushkov@9858 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| apetushkov@9858 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| apetushkov@9858 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| apetushkov@9858 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| apetushkov@9858 | 13 | * accompanied this code). |
| apetushkov@9858 | 14 | * |
| apetushkov@9858 | 15 | * You should have received a copy of the GNU General Public License version |
| apetushkov@9858 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| apetushkov@9858 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| apetushkov@9858 | 18 | * |
| apetushkov@9858 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| apetushkov@9858 | 20 | * or visit www.oracle.com if you need additional information or have any |
| apetushkov@9858 | 21 | * questions. |
| apetushkov@9858 | 22 | * |
| apetushkov@9858 | 23 | */ |
| apetushkov@9858 | 24 | |
| apetushkov@9858 | 25 | #ifndef SHARE_VM_JFR_WRITERS_JFRSTREAMWRITERHOST_HPP |
| apetushkov@9858 | 26 | #define SHARE_VM_JFR_WRITERS_JFRSTREAMWRITERHOST_HPP |
| apetushkov@9858 | 27 | |
| apetushkov@9858 | 28 | #include "jfr/utilities/jfrTypes.hpp" |
| apetushkov@9858 | 29 | #include "jfr/writers/jfrMemoryWriterHost.inline.hpp" |
| apetushkov@9858 | 30 | |
| apetushkov@9858 | 31 | template <typename Adapter, typename AP> // Adapter and AllocationPolicy |
| apetushkov@9858 | 32 | class StreamWriterHost : public MemoryWriterHost<Adapter, AP> { |
| apetushkov@9858 | 33 | public: |
| apetushkov@9858 | 34 | typedef typename Adapter::StorageType StorageType; |
| apetushkov@9858 | 35 | private: |
| apetushkov@9858 | 36 | intptr_t _stream_pos; |
| apetushkov@9858 | 37 | fio_fd _fd; |
| apetushkov@9858 | 38 | intptr_t current_stream_position() const; |
| apetushkov@9858 | 39 | |
| apetushkov@9858 | 40 | protected: |
| apetushkov@9858 | 41 | StreamWriterHost(StorageType* storage, Thread* thread); |
| apetushkov@9858 | 42 | StreamWriterHost(StorageType* storage, size_t size); |
| apetushkov@9858 | 43 | StreamWriterHost(Thread* thread); |
| apetushkov@9858 | 44 | bool accommodate(size_t used, size_t requested); |
| apetushkov@9858 | 45 | void bytes(void* dest, const void* src, size_t len); |
| apetushkov@9858 | 46 | void flush(size_t size); |
| apetushkov@9858 | 47 | bool has_valid_fd() const; |
| apetushkov@9858 | 48 | |
| apetushkov@9858 | 49 | public: |
| apetushkov@9858 | 50 | intptr_t current_offset() const; |
| apetushkov@9858 | 51 | void seek(intptr_t offset); |
| apetushkov@9858 | 52 | void flush(); |
| apetushkov@9858 | 53 | void write_unbuffered(const void* src, size_t len); |
| apetushkov@9858 | 54 | bool is_valid() const; |
| apetushkov@9858 | 55 | void close_fd(); |
| apetushkov@9858 | 56 | void reset(fio_fd fd); |
| apetushkov@9858 | 57 | }; |
| apetushkov@9858 | 58 | |
| apetushkov@9858 | 59 | #endif // SHARE_VM_JFR_WRITERS_JFRSTREAMWRITERHOST_HPP |
| apetushkov@9858 | 60 |
