1 /*

     2  * Copyright (c) 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_JFR_LEAKPROFILER_CHECKPOINT_EVENTEMITTER_HPP

    26 #define SHARE_JFR_LEAKPROFILER_CHECKPOINT_EVENTEMITTER_HPP

    27 

    28 #include "memory/allocation.hpp"

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

    30 

    31 typedef u8 traceid;

    32 

    33 class EdgeStore;

    34 class JfrThreadLocal;

    35 class ObjectSample;

    36 class ObjectSampler;

    37 class Thread;

    38 

    39 class EventEmitter : public CHeapObj<mtTracing> {

    40   friend class LeakProfiler;

    41   friend class PathToGcRootsOperation;

    42  private:

    43   const JfrTicks& _start_time;

    44   const JfrTicks& _end_time;

    45   Thread* _thread;

    46   JfrThreadLocal* _jfr_thread_local;

    47   traceid _thread_id;

    48 

    49   EventEmitter(const JfrTicks& start_time, const JfrTicks& end_time);

    50   ~EventEmitter();

    51 

    52   void write_event(const ObjectSample* sample, EdgeStore* edge_store);

    53   size_t write_events(ObjectSampler* sampler, EdgeStore* store, bool emit_all);

    54 

    55   static void emit(ObjectSampler* sampler, int64_t cutoff_ticks, bool emit_all);

    56 };

    57 

    58 #endif // SHARE_JFR_LEAKPROFILER_CHECKPOINT_EVENTEMITTER_HPP