1 /*
   2  * Copyright (c) 2002, 2007, 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 // Forward declarations of classes defined here.
  26 class GCTaskThread;
  27 class GCTaskTimeStamp;
  28 
  29 // Declarations of classes referenced in this file via pointer.
  30 class GCTaskManager;
  31 
  32 class GCTaskThread : public WorkerThread {
  33 private:
  34   // Instance state.
  35   GCTaskManager* _manager;              // Manager for worker.
  36   const uint     _processor_id;         // Which processor the worker is on.
  37 
  38   GCTaskTimeStamp* _time_stamps;
  39   uint _time_stamp_index;
  40 
  41   GCTaskTimeStamp* time_stamp_at(uint index);
  42 
  43  public:
  44   // Factory create and destroy methods.
  45   static GCTaskThread* create(GCTaskManager* manager,
  46                               uint           which,
  47                               uint           processor_id) {
  48     return new GCTaskThread(manager, which, processor_id);
  49   }
  50   static void destroy(GCTaskThread* manager) {
  51     if (manager != NULL) {
  52       delete manager;
  53     }
  54   }
  55   // Methods from Thread.
  56   bool is_GC_task_thread() const {
  57     return true;
  58   }
  59   virtual void run();
  60   // Methods.
  61   void start();
  62 
  63   void print_task_time_stamps();
  64   void print_on(outputStream* st) const;
  65   void print() const                                { print_on(tty); }
  66 
  67 protected:
  68   // Constructor.  Clients use factory, but there could be subclasses.
  69   GCTaskThread(GCTaskManager* manager, uint which, uint processor_id);
  70   // Destructor: virtual destructor because of virtual methods.
  71   virtual ~GCTaskThread();
  72   // Accessors.
  73   GCTaskManager* manager() const {
  74     return _manager;
  75   }
  76   uint which() const {
  77     return id();
  78   }
  79   uint processor_id() const {
  80     return _processor_id;
  81   }
  82 };
  83 
  84 class GCTaskTimeStamp : public CHeapObj
  85 {
  86  private:
  87   jlong  _entry_time;
  88   jlong  _exit_time;
  89   char*  _name;
  90 
  91  public:
  92   jlong entry_time()              { return _entry_time; }
  93   jlong exit_time()               { return _exit_time; }
  94   const char* name() const        { return (const char*)_name; }
  95 
  96   void set_entry_time(jlong time) { _entry_time = time; }
  97   void set_exit_time(jlong time)  { _exit_time = time; }
  98   void set_name(char* name)       { _name = name; }
  99 };