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.
  22  *
  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.
  31 class GCTaskThread;
  32 class GCTaskTimeStamp;
  33 
  34 // Declarations of classes referenced in this file via pointer.
  35 class GCTaskManager;
  36 
  37 class GCTaskThread : public WorkerThread {
  38   friend class GCTaskManager;
  39 private:
  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 
  71 protected:
  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 
  88 class 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