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_JFR_RECORDER_JFRRECORDER_HPP
26 #define SHARE_JFR_RECORDER_JFRRECORDER_HPP
27 
28 #include "jfr/utilities/jfrAllocation.hpp"
29 
30 class JavaThread;
31 class Thread;
32 
33 //
34 // Represents the singleton instance of Flight Recorder.
35 // Lifecycle management of recorder components.
36 //
37 class JfrRecorder : public JfrCHeapObj {
38   friend class Jfr;
39   friend void recorderthread_entry(JavaThread*, JavaThread*);
40  private:
41   static bool on_create_vm_1();
42   static bool on_create_vm_2();
43   static bool on_create_vm_3();
44   static bool create_checkpoint_manager();
45   static bool create_chunk_repository();
46   static bool create_java_event_writer();
47   static bool create_jvmti_agent();
48   static bool create_oop_storages();
49   static bool create_os_interface();
50   static bool create_post_box();
51   static bool create_recorder_thread();
52   static bool create_stacktrace_repository();
53   static bool create_storage();
54   static bool create_stringpool();
55   static bool create_thread_sampling();
56   static bool create_event_throttler();
57   static bool create_virtual_thread_support();
58   static bool create_components();
59   static void destroy_components();
60   static void on_recorder_thread_exit();
61 
62  public:
63   static bool is_enabled();
64   static bool is_disabled();
65   static bool create(bool simulate_failure);
66   static bool is_created();
67   static void destroy();
68   static void start_recording();
69   static bool is_recording();
70   static void stop_recording();
71 };
72 
73 #endif // SHARE_JFR_RECORDER_JFRRECORDER_HPP