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hotspot/src/share/vm/gc_implementation/parallelScavenge/gcTaskThread.hpp

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+/*
+ * Copyright 2002-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// Forward declarations of classes defined here.
+class GCTaskThread;
+class GCTaskTimeStamp;
+
+// Declarations of classes referenced in this file via pointer.
+class GCTaskManager;
+
+class GCTaskThread : public WorkerThread {
+private:
+  // Instance state.
+  GCTaskManager* _manager;              // Manager for worker.
+  const uint     _processor_id;         // Which processor the worker is on.
+
+  GCTaskTimeStamp* _time_stamps;
+  uint _time_stamp_index;
+
+  GCTaskTimeStamp* time_stamp_at(uint index);
+
+ public:
+  // Factory create and destroy methods.
+  static GCTaskThread* create(GCTaskManager* manager,
+                              uint           which,
+                              uint           processor_id) {
+    return new GCTaskThread(manager, which, processor_id);
+  }
+  static void destroy(GCTaskThread* manager) {
+    if (manager != NULL) {
+      delete manager;
+    }
+  }
+  // Methods from Thread.
+  bool is_GC_task_thread() const {
+    return true;
+  }
+  virtual void run();
+  // Methods.
+  void start();
+
+  void print_task_time_stamps();
+  void print_on(outputStream* st) const;
+  void print() const                                { print_on(tty); }
+
+protected:
+  // Constructor.  Clients use factory, but there could be subclasses.
+  GCTaskThread(GCTaskManager* manager, uint which, uint processor_id);
+  // Destructor: virtual destructor because of virtual methods.
+  virtual ~GCTaskThread();
+  // Accessors.
+  GCTaskManager* manager() const {
+    return _manager;
+  }
+  uint which() const {
+    return id();
+  }
+  uint processor_id() const {
+    return _processor_id;
+  }
+};
+
+class GCTaskTimeStamp : public CHeapObj
+{
+ private:
+  jlong  _entry_time;
+  jlong  _exit_time;
+  char*  _name;
+
+ public:
+  jlong entry_time()              { return _entry_time; }
+  jlong exit_time()               { return _exit_time; }
+  const char* name() const        { return (const char*)_name; }
+
+  void set_entry_time(jlong time) { _entry_time = time; }
+  void set_exit_time(jlong time)  { _exit_time = time; }
+  void set_name(char* name)       { _name = name; }
+};