Mercurial > hg > graal-compiler
view src/share/vm/gc_implementation/g1/concurrentG1RefineThread.hpp @ 948:89e0543e1737
6884624: Update copyright year
Summary: Update copyright for files that have been modified in 2009 through Septermber
Reviewed-by: tbell, ohair
author | xdono |
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date | Tue, 22 Sep 2009 14:06:10 -0700 |
parents | e1fdf4fd34dc |
children | 035d2e036a9b |
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/* * Copyright 2001-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // Forward Decl. 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. int _worker_id; int _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; public: virtual void run(); bool is_active() { return _active; } void activate() { _active = true; } void deactivate() { _active = false; } private: ConcurrentG1Refine* _cg1r; double _interval_ms; void decreaseInterval(int processing_time_ms) { double min_interval_ms = (double) processing_time_ms; _interval_ms = 0.8 * _interval_ms; if (_interval_ms < min_interval_ms) _interval_ms = min_interval_ms; } void increaseInterval(int processing_time_ms) { double max_interval_ms = 9.0 * (double) processing_time_ms; _interval_ms = 1.1 * _interval_ms; if (max_interval_ms > 0 && _interval_ms > max_interval_ms) _interval_ms = max_interval_ms; } void sleepBeforeNextCycle(); // For use by G1CollectedHeap, which is a friend. static SuspendibleThreadSet* sts() { return &_sts; } public: // Constructor ConcurrentG1RefineThread(ConcurrentG1Refine* cg1r, ConcurrentG1RefineThread* next, int worker_id_offset, int worker_id); // Printing void print(); // Total virtual time so far. double vtime_accum() { return _vtime_accum; } ConcurrentG1Refine* cg1r() { return _cg1r; } void sample_young_list_rs_lengths(); // Yield for GC void yield(); // shutdown void stop(); };