1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/jfr/recorder/checkpoint/jfrCheckpointWriter.hpp Mon Aug 12 18:30:40 2019 +0300
1.3 @@ -0,0 +1,88 @@
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_RECORDER_CHECKPOINT_JFRCHECKPOINTWRITER_HPP
1.29 +#define SHARE_VM_JFR_RECORDER_CHECKPOINT_JFRCHECKPOINTWRITER_HPP
1.30 +
1.31 +#include "jfr/recorder/checkpoint/jfrCheckpointBlob.hpp"
1.32 +#include "jfr/recorder/storage/jfrBuffer.hpp"
1.33 +#include "jfr/utilities/jfrTime.hpp"
1.34 +#include "jfr/utilities/jfrTypes.hpp"
1.35 +#include "jfr/writers/jfrEventWriterHost.inline.hpp"
1.36 +#include "jfr/writers/jfrMemoryWriterHost.inline.hpp"
1.37 +#include "jfr/writers/jfrStorageAdapter.hpp"
1.38 +
1.39 +class Thread;
1.40 +
1.41 +class JfrCheckpointFlush : public StackObj {
1.42 + public:
1.43 + typedef JfrBuffer Type;
1.44 + JfrCheckpointFlush(Type* old, size_t used, size_t requested, Thread* t);
1.45 + Type* result() { return _result; }
1.46 + private:
1.47 + Type* _result;
1.48 +};
1.49 +
1.50 +typedef Adapter<JfrCheckpointFlush> JfrCheckpointAdapter;
1.51 +typedef AcquireReleaseMemoryWriterHost<JfrCheckpointAdapter, StackObj > JfrTransactionalCheckpointWriter;
1.52 +typedef EventWriterHost<BigEndianEncoder, CompressedIntegerEncoder, JfrTransactionalCheckpointWriter> JfrCheckpointWriterBase;
1.53 +
1.54 +struct JfrCheckpointContext {
1.55 + jlong offset;
1.56 + juint count;
1.57 +};
1.58 +
1.59 +class JfrCheckpointWriter : public JfrCheckpointWriterBase {
1.60 + friend class JfrSerializerRegistration;
1.61 + private:
1.62 + JfrTicks _time;
1.63 + jlong _offset;
1.64 + juint _count;
1.65 + bool _flushpoint;
1.66 + bool _header;
1.67 +
1.68 + juint count() const;
1.69 + void set_count(juint count);
1.70 + void increment();
1.71 + void set_flushpoint(bool flushpoint);
1.72 + bool is_flushpoint() const;
1.73 + const u1* session_data(size_t* size, const JfrCheckpointContext* ctx = NULL);
1.74 + void release();
1.75 +
1.76 + public:
1.77 + JfrCheckpointWriter(bool flushpoint, bool header, Thread* thread);
1.78 + ~JfrCheckpointWriter();
1.79 + void write_type(JfrTypeId type_id);
1.80 + void write_count(u4 nof_entries);
1.81 + void write_count(u4 nof_entries, jlong offset);
1.82 + void write_key(u8 key);
1.83 + const JfrCheckpointContext context() const;
1.84 + void set_context(const JfrCheckpointContext ctx);
1.85 + bool has_data() const;
1.86 + JfrCheckpointBlobHandle checkpoint_blob();
1.87 + JfrCheckpointBlobHandle copy(const JfrCheckpointContext* ctx = NULL);
1.88 + JfrCheckpointBlobHandle move(const JfrCheckpointContext* ctx = NULL);
1.89 +};
1.90 +
1.91 +#endif // SHARE_VM_JFR_RECORDER_CHECKPOINT_JFRCHECKPOINTWRITER_HPP
