1 /*
   2  * Copyright (c) 2017, 2020, 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_G1_G1FULLGCREFERENCEPROCESSOREXECUTOR_HPP
  26 #define SHARE_GC_G1_G1FULLGCREFERENCEPROCESSOREXECUTOR_HPP
  27 
  28 #include "gc/g1/g1FullGCCompactionPoint.hpp"
  29 #include "gc/g1/g1FullGCScope.hpp"
  30 #include "gc/g1/g1FullGCTask.hpp"
  31 #include "gc/g1/g1RootProcessor.hpp"
  32 #include "gc/g1/g1StringDedup.hpp"
  33 #include "gc/g1/heapRegionManager.hpp"
  34 #include "gc/shared/referenceProcessor.hpp"
  35 #include "gc/shared/taskqueue.hpp"
  36 #include "utilities/ticks.hpp"
  37 
  38 class G1FullGCTracer;
  39 class STWGCTimer;
  40 
  41 class G1FullGCReferenceProcessingExecutor: public AbstractRefProcTaskExecutor {
  42   G1FullCollector*    _collector;
  43   ReferenceProcessor* _reference_processor;
  44   uint                _old_mt_degree;
  45 
  46 public:
  47   G1FullGCReferenceProcessingExecutor(G1FullCollector* collector);
  48   ~G1FullGCReferenceProcessingExecutor();
  49 
  50   // Do reference processing.
  51   void execute(STWGCTimer* timer, G1FullGCTracer* tracer);
  52 
  53   // Executes the given task using concurrent marking worker threads.
  54   virtual void execute(ProcessTask& task, uint ergo_workers);
  55 
  56 private:
  57   void run_task(AbstractGangTask* task);
  58   void run_task(AbstractGangTask* task, uint workers);
  59 
  60   class G1RefProcTaskProxy : public AbstractGangTask {
  61     typedef AbstractRefProcTaskExecutor::ProcessTask ProcessTask;
  62     ProcessTask&                  _proc_task;
  63     G1FullCollector*              _collector;
  64     OWSTTaskTerminator            _terminator;
  65 
  66   public:
  67     G1RefProcTaskProxy(ProcessTask& proc_task,
  68                        G1FullCollector* scope);
  69 
  70     virtual void work(uint worker_id);
  71   };
  72 };
  73 
  74 #endif // SHARE_GC_G1_G1FULLGCREFERENCEPROCESSOREXECUTOR_HPP