Mercurial > hg > truffle
view src/share/vm/gc_implementation/g1/concurrentG1Refine.hpp @ 13907:6fc05ad86490
Remove unused 'negated' arguments.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Fri, 07 Feb 2014 15:03:21 +0100 |
parents | e72f7eecc96d |
children | 8847586c9037 |
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/* * Copyright (c) 2001, 2013, 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_IMPLEMENTATION_G1_CONCURRENTG1REFINE_HPP #define SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINE_HPP #include "gc_implementation/g1/g1HotCardCache.hpp" #include "memory/allocation.hpp" #include "runtime/thread.hpp" #include "utilities/globalDefinitions.hpp" // Forward decl class ConcurrentG1RefineThread; class G1CollectedHeap; class G1HotCardCache; class G1RemSet; class DirtyCardQueue; class ConcurrentG1Refine: public CHeapObj<mtGC> { ConcurrentG1RefineThread** _threads; int _n_threads; int _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. */ int _green_zone; int _yellow_zone; int _red_zone; int _thread_threshold_step; // We delay the refinement of 'hot' cards using the hot card cache. G1HotCardCache _hot_card_cache; // Reset the threshold step value based of the current zone boundaries. void reset_threshold_step(); public: ConcurrentG1Refine(G1CollectedHeap* g1h); ~ConcurrentG1Refine(); void init(); // Accomplish some initialization that has to wait. void stop(); void reinitialize_threads(); // 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 ConcurrentG1RefineThread * sampling_thread() const; static int thread_num(); void print_worker_threads_on(outputStream* st) const; void set_green_zone(int x) { _green_zone = x; } void set_yellow_zone(int x) { _yellow_zone = x; } void set_red_zone(int x) { _red_zone = x; } int green_zone() const { return _green_zone; } int yellow_zone() const { return _yellow_zone; } int red_zone() const { return _red_zone; } int total_thread_num() const { return _n_threads; } int worker_thread_num() const { return _n_worker_threads; } int thread_threshold_step() const { return _thread_threshold_step; } G1HotCardCache* hot_card_cache() { return &_hot_card_cache; } }; #endif // SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINE_HPP