1/*
2 * Copyright (c) 2002, 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.
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23 */
24
25#ifndef SHARE_GC_PARALLEL_GCTASKTHREAD_HPP
26#define SHARE_GC_PARALLEL_GCTASKTHREAD_HPP
27
28#include "runtime/thread.hpp"
29
30// Forward declarations of classes defined here.
31class GCTaskThread;
32class GCTaskTimeStamp;
33
34// Declarations of classes referenced in this file via pointer.
35class GCTaskManager;
36
37class GCTaskThread : public WorkerThread {
38 friend class GCTaskManager;
39private:
40 // Instance state.
41 GCTaskManager* _manager; // Manager for worker.
42 const uint _processor_id; // Which processor the worker is on.
43
44 GCTaskTimeStamp* _time_stamps;
45 uint _time_stamp_index;
46
47 GCTaskTimeStamp* time_stamp_at(uint index);
48 void add_task_timestamp(const char* name, jlong t_entry, jlong t_exit);
49
50 // Factory create and destroy methods.
51 static GCTaskThread* create(GCTaskManager* manager,
52 uint which,
53 uint processor_id) {
54 return new GCTaskThread(manager, which, processor_id);
55 }
56 public:
57
58 static void destroy(GCTaskThread* manager) {
59 if (manager != NULL) {
60 delete manager;
61 }
62 }
63 // Methods from Thread.
64 bool is_GC_task_thread() const {
65 return true;
66 }
67 virtual void run();
68
69 void print_task_time_stamps();
70
71protected:
72 // Constructor. Clients use factory, but there could be subclasses.
73 GCTaskThread(GCTaskManager* manager, uint which, uint processor_id);
74 // Destructor: virtual destructor because of virtual methods.
75 virtual ~GCTaskThread();
76 // Accessors.
77 GCTaskManager* manager() const {
78 return _manager;
79 }
80 uint which() const {
81 return id();
82 }
83 uint processor_id() const {
84 return _processor_id;
85 }
86};
87
88class GCTaskTimeStamp : public CHeapObj<mtGC>
89{
90 private:
91 jlong _entry_time;
92 jlong _exit_time;
93 const char* _name;
94
95 public:
96 jlong entry_time() { return _entry_time; }
97 jlong exit_time() { return _exit_time; }
98 const char* name() const { return _name; }
99
100 void set_entry_time(jlong time) { _entry_time = time; }
101 void set_exit_time(jlong time) { _exit_time = time; }
102 void set_name(const char* name) { _name = name; }
103};
104
105#endif // SHARE_GC_PARALLEL_GCTASKTHREAD_HPP
106