--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentGCThread.hpp	Fri Nov 21 15:21:12 2008 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,167 +0,0 @@
-/*
- * Copyright 2001-2005 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.
- *
- */
-
-class VoidClosure;
-
-// A SuspendibleThreadSet is (obviously) a set of threads that can be
-// suspended.  A thread can join and later leave the set, and periodically
-// yield.  If some thread (not in the set) requests, via suspend_all, that
-// the threads be suspended, then the requesting thread is blocked until
-// all the threads in the set have yielded or left the set.  (Threads may
-// not enter the set when an attempted suspension is in progress.)  The
-// suspending thread later calls resume_all, allowing the suspended threads
-// to continue.
-
-class SuspendibleThreadSet {
-  Monitor* _m;
-  int      _async;
-  bool     _async_stop;
-  int      _async_stopped;
-  bool     _initialized;
-  double   _suspend_all_start;
-
-  void initialize_work();
-
- public:
-  SuspendibleThreadSet() : _initialized(false) {}
-
-  // Add the current thread to the set.  May block if a suspension
-  // is in progress.
-  void join();
-  // Removes the current thread from the set.
-  void leave();
-  // Returns "true" iff an suspension is in progress.
-  bool should_yield() { return _async_stop; }
-  // Suspends the current thread if a suspension is in progress (for
-  // the duration of the suspension.)
-  void yield(const char* id);
-  // Return when all threads in the set are suspended.
-  void suspend_all();
-  // Allow suspended threads to resume.
-  void resume_all();
-  // Redundant initializations okay.
-  void initialize() {
-    // Double-check dirty read idiom.
-    if (!_initialized) initialize_work();
-  }
-};
-
-
-class ConcurrentGCThread: public NamedThread {
-  friend class VMStructs;
-
-protected:
-  static bool _should_terminate;
-  static bool _has_terminated;
-
-  enum CGC_flag_type {
-    CGC_nil           = 0x0,
-    CGC_dont_suspend  = 0x1,
-    CGC_CGC_safepoint = 0x2,
-    CGC_VM_safepoint  = 0x4
-  };
-
-  static int _CGC_flag;
-
-  static bool CGC_flag_is_set(int b)       { return (_CGC_flag & b) != 0; }
-  static int set_CGC_flag(int b)           { return _CGC_flag |= b; }
-  static int reset_CGC_flag(int b)         { return _CGC_flag &= ~b; }
-
-  void stopWorldAndDo(VoidClosure* op);
-
-  // All instances share this one set.
-  static SuspendibleThreadSet _sts;
-
-  // Create and start the thread (setting it's priority high.)
-  void create_and_start();
-
-  // Do initialization steps in the thread: record stack base and size,
-  // init thread local storage, set JNI handle block.
-  void initialize_in_thread();
-
-  // Wait until Universe::is_fully_initialized();
-  void wait_for_universe_init();
-
-  // Record that the current thread is terminating, and will do more
-  // concurrent work.
-  void terminate();
-
-public:
-  // Constructor
-
-  ConcurrentGCThread();
-  ~ConcurrentGCThread() {} // Exists to call NamedThread destructor.
-
-  // Tester
-  bool is_ConcurrentGC_thread() const          { return true;       }
-
-  static void safepoint_synchronize();
-  static void safepoint_desynchronize();
-
-  // All overridings should probably do _sts::yield, but we allow
-  // overriding for distinguished debugging messages.  Default is to do
-  // nothing.
-  virtual void yield() {}
-
-  bool should_yield() { return _sts.should_yield(); }
-
-  // they are prefixed by sts since there are already yield() and
-  // should_yield() (non-static) methods in this class and it was an
-  // easy way to differentiate them.
-  static void stsYield(const char* id);
-  static bool stsShouldYield();
-  static void stsJoin();
-  static void stsLeave();
-
-};
-
-// The SurrogateLockerThread is used by concurrent GC threads for
-// manipulating Java monitors, in particular, currently for
-// manipulating the pending_list_lock. XXX
-class SurrogateLockerThread: public JavaThread {
-  friend class VMStructs;
- public:
-  enum SLT_msg_type {
-    empty = 0,           // no message
-    acquirePLL,          // acquire pending list lock
-    releaseAndNotifyPLL  // notify and release pending list lock
-  };
- private:
-  // the following are shared with the CMSThread
-  SLT_msg_type  _buffer;  // communication buffer
-  Monitor       _monitor; // monitor controlling buffer
-  BasicLock     _basicLock; // used for PLL locking
-
- public:
-  static SurrogateLockerThread* make(TRAPS);
-
-  SurrogateLockerThread();
-
-  bool is_hidden_from_external_view() const     { return true; }
-
-  void loop(); // main method
-
-  void manipulatePLL(SLT_msg_type msg);
-
-};