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src/share/vm/jfr/writers/jfrStreamWriterHost.hpp@db357034b763 (annotated)

src/share/vm/jfr/writers/jfrStreamWriterHost.hpp

Tue, 16 Jun 2020 11:03:04 +0800

author

bulasevich

date

Tue, 16 Jun 2020 11:03:04 +0800

changeset 9947

db357034b763

parent 9858

b985cbb00e68

permissions

-rw-r--r--

8217647: JFR: recordings on 32-bit systems unreadable
Reviewed-by: egahlin
Contributed-by: boris.ulasevich@bell-sw.com, markus.gronlund@oracle.com

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:
bulasevich@9947	36	int64_t _stream_pos;
apetushkov@9858	37	fio_fd _fd;
bulasevich@9947	38	int64_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:
bulasevich@9947	50	int64_t current_offset() const;
bulasevich@9947	51	void seek(int64_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