1 /*
 2  * Copyright (c) 2014, 2021, 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
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23  */
24 
25 #ifndef SHARE_JFR_LEAKPROFILER_CHECKPOINT_OBJECTSAMPLECHECKPOINT_HPP
26 #define SHARE_JFR_LEAKPROFILER_CHECKPOINT_OBJECTSAMPLECHECKPOINT_HPP
27 
28 #include "memory/allocation.hpp"
29 #include "jfr/utilities/jfrTypes.hpp"
30 
31 class EdgeStore;
32 class InstanceKlass;
33 class JavaThread;
34 class JfrCheckpointWriter;
35 class JfrStackTrace;
36 class Klass;
37 class ObjectSample;
38 class ObjectSampleMarker;
39 class ObjectSampler;
40 class Thread;
41 
42 class ObjectSampleCheckpoint : AllStatic {
43   friend class EventEmitter;
44   friend class ObjectSampler;
45   friend class PathToGcRootsOperation;
46   friend class StackTraceBlobInstaller;
47  private:
48   static void add_to_leakp_set(const InstanceKlass* ik, traceid method_id);
49   static int save_mark_words(const ObjectSampler* sampler, ObjectSampleMarker& marker, bool emit_all);
50   static void write_stacktrace(const JfrStackTrace* trace, JfrCheckpointWriter& writer);
51   static void write(const ObjectSampler* sampler, EdgeStore* edge_store, bool emit_all, Thread* thread);
52   static void clear();
53  public:
54   static void on_type_set(JfrCheckpointWriter& writer);
55   static void on_type_set_unload(JfrCheckpointWriter& writer);
56   static void on_thread_exit(JavaThread* jt);
57   static void on_rotation(const ObjectSampler* sampler);
58 };
59 
60 #endif // SHARE_JFR_LEAKPROFILER_CHECKPOINT_OBJECTSAMPLECHECKPOINT_HPP