Mercurial > hg > graal-jvmci-8
view src/share/vm/gc_implementation/g1/concurrentG1RefineThread.hpp @ 20655:b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
Summary: Added a G1CollectorPolicyExt where it is possible to extend the class.
Reviewed-by: sjohanss, tschatzl
author | jwilhelm |
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date | Fri, 21 Nov 2014 12:08:37 +0100 |
parents | 570cb6369f17 |
children |
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/* * Copyright (c) 2001, 2010, 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_CONCURRENTG1REFINETHREAD_HPP #define SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINETHREAD_HPP #include "gc_implementation/shared/concurrentGCThread.hpp" // Forward Decl. class CardTableEntryClosure; class ConcurrentG1Refine; // The G1 Concurrent Refinement Thread (could be several in the future). class ConcurrentG1RefineThread: public ConcurrentGCThread { friend class VMStructs; friend class G1CollectedHeap; double _vtime_start; // Initial virtual time. double _vtime_accum; // Initial virtual time. uint _worker_id; uint _worker_id_offset; // The refinement threads collection is linked list. A predecessor can activate a successor // when the number of the rset update buffer crosses a certain threshold. A successor // would self-deactivate when the number of the buffers falls below the threshold. bool _active; ConcurrentG1RefineThread* _next; Monitor* _monitor; ConcurrentG1Refine* _cg1r; // The closure applied to completed log buffers. CardTableEntryClosure* _refine_closure; int _thread_threshold_step; // This thread activation threshold int _threshold; // This thread deactivation threshold int _deactivation_threshold; void sample_young_list_rs_lengths(); void run_young_rs_sampling(); void wait_for_completed_buffers(); void set_active(bool x) { _active = x; } bool is_active(); void activate(); void deactivate(); public: virtual void run(); // Constructor ConcurrentG1RefineThread(ConcurrentG1Refine* cg1r, ConcurrentG1RefineThread* next, CardTableEntryClosure* refine_closure, uint worker_id_offset, uint worker_id); void initialize(); // Printing void print() const; void print_on(outputStream* st) const; // Total virtual time so far. double vtime_accum() { return _vtime_accum; } ConcurrentG1Refine* cg1r() { return _cg1r; } // shutdown void stop(); }; #endif // SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINETHREAD_HPP