1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/jfr/writers/jfrStreamWriterHost.hpp Mon Aug 12 18:30:40 2019 +0300
1.3 @@ -0,0 +1,60 @@
1.4 +/*
1.5 + * Copyright (c) 2016, 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 +
1.28 +#ifndef SHARE_VM_JFR_WRITERS_JFRSTREAMWRITERHOST_HPP
1.29 +#define SHARE_VM_JFR_WRITERS_JFRSTREAMWRITERHOST_HPP
1.30 +
1.31 +#include "jfr/utilities/jfrTypes.hpp"
1.32 +#include "jfr/writers/jfrMemoryWriterHost.inline.hpp"
1.33 +
1.34 +template <typename Adapter, typename AP> // Adapter and AllocationPolicy
1.35 +class StreamWriterHost : public MemoryWriterHost<Adapter, AP> {
1.36 + public:
1.37 + typedef typename Adapter::StorageType StorageType;
1.38 + private:
1.39 + intptr_t _stream_pos;
1.40 + fio_fd _fd;
1.41 + intptr_t current_stream_position() const;
1.42 +
1.43 + protected:
1.44 + StreamWriterHost(StorageType* storage, Thread* thread);
1.45 + StreamWriterHost(StorageType* storage, size_t size);
1.46 + StreamWriterHost(Thread* thread);
1.47 + bool accommodate(size_t used, size_t requested);
1.48 + void bytes(void* dest, const void* src, size_t len);
1.49 + void flush(size_t size);
1.50 + bool has_valid_fd() const;
1.51 +
1.52 + public:
1.53 + intptr_t current_offset() const;
1.54 + void seek(intptr_t offset);
1.55 + void flush();
1.56 + void write_unbuffered(const void* src, size_t len);
1.57 + bool is_valid() const;
1.58 + void close_fd();
1.59 + void reset(fio_fd fd);
1.60 +};
1.61 +
1.62 +#endif // SHARE_VM_JFR_WRITERS_JFRSTREAMWRITERHOST_HPP
1.63 +
