--- 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