1/*
2 * Copyright (c) 2002, 2017, 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_GC_PARALLEL_GCTASKTHREAD_HPP
26#define SHARE_VM_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  bool _is_working;                     // True if participating in GC tasks
51
52  // Factory create and destroy methods.
53  static GCTaskThread* create(GCTaskManager* manager,
54                              uint           which,
55                              uint           processor_id) {
56    return new GCTaskThread(manager, which, processor_id);
57  }
58 public:
59
60  static void destroy(GCTaskThread* manager) {
61    if (manager != NULL) {
62      delete manager;
63    }
64  }
65  // Methods from Thread.
66  bool is_GC_task_thread() const {
67    return true;
68  }
69  virtual void run();
70
71  void print_task_time_stamps();
72
73protected:
74  // Constructor.  Clients use factory, but there could be subclasses.
75  GCTaskThread(GCTaskManager* manager, uint which, uint processor_id);
76  // Destructor: virtual destructor because of virtual methods.
77  virtual ~GCTaskThread();
78  // Accessors.
79  GCTaskManager* manager() const {
80    return _manager;
81  }
82  uint which() const {
83    return id();
84  }
85  uint processor_id() const {
86    return _processor_id;
87  }
88  void set_is_working(bool v) { _is_working = v; }
89};
90
91class GCTaskTimeStamp : public CHeapObj<mtGC>
92{
93 private:
94  jlong  _entry_time;
95  jlong  _exit_time;
96  const char*  _name;
97
98 public:
99  jlong entry_time()              { return _entry_time; }
100  jlong exit_time()               { return _exit_time; }
101  const char* name() const        { return _name; }
102
103  void set_entry_time(jlong time) { _entry_time = time; }
104  void set_exit_time(jlong time)  { _exit_time = time; }
105  void set_name(const char* name) { _name = name; }
106};
107
108#endif // SHARE_VM_GC_PARALLEL_GCTASKTHREAD_HPP
109