1 /*
   2  * Copyright (c) 2015, 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 #ifndef SHARE_GC_Z_ZDRIVER_HPP
  25 #define SHARE_GC_Z_ZDRIVER_HPP
  26 
  27 #include "gc/shared/concurrentGCThread.hpp"
  28 #include "gc/shared/gcCause.hpp"
  29 #include "gc/z/zMessagePort.hpp"
  30 
  31 class ZOperationClosure;
  32 
  33 class ZDriver : public ConcurrentGCThread {
  34 private:
  35   ZMessagePort<GCCause::Cause> _gc_cycle_port;
  36   ZRendezvousPort              _gc_locker_port;
  37 
  38   bool vm_operation(ZOperationClosure* cl);
  39 
  40   GCCause::Cause start_gc_cycle();
  41   void run_gc_cycle(GCCause::Cause cause);
  42   void end_gc_cycle();
  43 
  44 protected:
  45   virtual void run_service();
  46   virtual void stop_service();
  47 
  48 public:
  49   ZDriver();
  50 
  51   void collect(GCCause::Cause cause);
  52 };
  53 
  54 #endif // SHARE_GC_Z_ZDRIVER_HPP