1 /*

     2  * Copyright (c) 2012, 2019, 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_JFRRCHUNK_HPP

    26 #define SHARE_VM_JFR_RECORDER_REPOSITORY_JFRRCHUNK_HPP

    27 

    28 #include "jni.h"

    29 #include "jfr/utilities/jfrAllocation.hpp"

    30 #include "jfr/utilities/jfrTypes.hpp"

    31 

    32 class JfrChunk : public JfrCHeapObj {

    33   friend class JfrChunkWriter;

    34   friend class JfrChunkHeadWriter;

    35  private:

    36   char* _path;

    37   int64_t _start_ticks;

    38   int64_t _previous_start_ticks;

    39   int64_t _start_nanos;

    40   int64_t _previous_start_nanos;

    41   int64_t _last_update_nanos;

    42   int64_t _last_checkpoint_offset;

    43   int64_t _last_metadata_offset;

    44   mutable u1 _generation;

    45 

    46   JfrChunk();

    47   ~JfrChunk();

    48 

    49   void update_start_ticks();

    50   void update_start_nanos();

    51   void save_current_and_update_start_ticks();

    52   void save_current_and_update_start_nanos();

    53 

    54   void reset();

    55   int64_t last_checkpoint_offset() const;

    56   void set_last_checkpoint_offset(int64_t offset);

    57 

    58   int64_t last_metadata_offset() const;

    59   void set_last_metadata_offset(int64_t offset);

    60   bool has_metadata() const;

    61 

    62   int64_t start_ticks() const;

    63   int64_t start_nanos() const;

    64 

    65   int64_t previous_start_ticks() const;

    66   int64_t previous_start_nanos() const;

    67   int64_t last_chunk_duration() const;

    68 

    69   void update_time_to_now();

    70   void set_path(const char* path);

    71   const char* path() const;

    72 

    73   void update();

    74 

    75   bool is_started() const;

    76   bool is_finished() const;

    77   bool is_initial_flush() const;

    78 

    79   int64_t duration() const;

    80   u1 generation() const;

    81 };

    82 

    83 #endif // SHARE_VM_JFR_RECORDER_REPOSITORY_JFRRCHUNK_HPP