src/hotspot/share/gc/g1/concurrentG1Refine.hpp
branchhttp-client-branch
changeset 55820 76d033c9908f
parent 55819 18e431209168
parent 47825 13e39ca700d0
child 55821 fa0fc03c0853
--- a/src/hotspot/share/gc/g1/concurrentG1Refine.hpp	Thu Nov 16 10:29:18 2017 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,107 +0,0 @@
-/*
- * Copyright (c) 2001, 2016, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
-#ifndef SHARE_VM_GC_G1_CONCURRENTG1REFINE_HPP
-#define SHARE_VM_GC_G1_CONCURRENTG1REFINE_HPP
-
-#include "memory/allocation.hpp"
-#include "utilities/globalDefinitions.hpp"
-
-// Forward decl
-class CardTableEntryClosure;
-class ConcurrentG1RefineThread;
-class G1YoungRemSetSamplingThread;
-class outputStream;
-class ThreadClosure;
-
-class ConcurrentG1Refine: public CHeapObj<mtGC> {
-  G1YoungRemSetSamplingThread* _sample_thread;
-
-  ConcurrentG1RefineThread** _threads;
-  uint _n_worker_threads;
- /*
-  * The value of the update buffer queue length falls into one of 3 zones:
-  * green, yellow, red. If the value is in [0, green) nothing is
-  * done, the buffers are left unprocessed to enable the caching effect of the
-  * dirtied cards. In the yellow zone [green, yellow) the concurrent refinement
-  * threads are gradually activated. In [yellow, red) all threads are
-  * running. If the length becomes red (max queue length) the mutators start
-  * processing the buffers.
-  *
-  * There are some interesting cases (when G1UseAdaptiveConcRefinement
-  * is turned off):
-  * 1) green = yellow = red = 0. In this case the mutator will process all
-  *    buffers. Except for those that are created by the deferred updates
-  *    machinery during a collection.
-  * 2) green = 0. Means no caching. Can be a good way to minimize the
-  *    amount of time spent updating rsets during a collection.
-  */
-  size_t _green_zone;
-  size_t _yellow_zone;
-  size_t _red_zone;
-  size_t _min_yellow_zone_size;
-
-  ConcurrentG1Refine(size_t green_zone,
-                     size_t yellow_zone,
-                     size_t red_zone,
-                     size_t min_yellow_zone_size);
-
-  // Update green/yellow/red zone values based on how well goals are being met.
-  void update_zones(double update_rs_time,
-                    size_t update_rs_processed_buffers,
-                    double goal_ms);
-
-  // Update thread thresholds to account for updated zone values.
-  void update_thread_thresholds();
-
- public:
-  ~ConcurrentG1Refine();
-
-  // Returns ConcurrentG1Refine instance if succeeded to create/initialize ConcurrentG1Refine and ConcurrentG1RefineThread.
-  // Otherwise, returns NULL with error code.
-  static ConcurrentG1Refine* create(jint* ecode);
-
-  void stop();
-
-  void adjust(double update_rs_time, size_t update_rs_processed_buffers, double goal_ms);
-
-  // Iterate over all concurrent refinement threads
-  void threads_do(ThreadClosure *tc);
-
-  // Iterate over all worker refinement threads
-  void worker_threads_do(ThreadClosure * tc);
-
-  // The RS sampling thread has nothing to do with refinement, but is here for now.
-  G1YoungRemSetSamplingThread * sampling_thread() const { return _sample_thread; }
-
-  static uint thread_num();
-
-  void print_worker_threads_on(outputStream* st) const;
-
-  size_t green_zone() const      { return _green_zone;  }
-  size_t yellow_zone() const     { return _yellow_zone; }
-  size_t red_zone() const        { return _red_zone;    }
-};
-
-#endif // SHARE_VM_GC_G1_CONCURRENTG1REFINE_HPP