Mercurial > hg > graal-compiler
diff src/share/vm/gc_implementation/g1/concurrentG1RefineThread.hpp @ 342:37f87013dfd8
6711316: Open source the Garbage-First garbage collector
Summary: First mercurial integration of the code for the Garbage-First garbage collector.
Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
author | ysr |
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date | Thu, 05 Jun 2008 15:57:56 -0700 |
parents | |
children | 315a5d70b295 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/gc_implementation/g1/concurrentG1RefineThread.hpp Thu Jun 05 15:57:56 2008 -0700 @@ -0,0 +1,104 @@ +/* + * Copyright 2001-2007 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. + + public: + virtual void run(); + + private: + ConcurrentG1Refine* _cg1r; + bool _started; + bool _in_progress; + volatile bool _restart; + + COTracker _co_tracker; + double _interval_ms; + + bool _do_traversal; + + 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(); + + void traversalBasedRefinement(); + + void queueBasedRefinement(); + + // For use by G1CollectedHeap, which is a friend. + static SuspendibleThreadSet* sts() { return &_sts; } + + public: + // Constructor + ConcurrentG1RefineThread(ConcurrentG1Refine* cg1r); + + // Printing + void print(); + + // Total virtual time so far. + double vtime_accum() { return _vtime_accum; } + + ConcurrentG1Refine* cg1r() { return _cg1r; } + + + void set_started() { _started = true; } + void clear_started() { _started = false; } + bool started() { return _started; } + + void set_in_progress() { _in_progress = true; } + void clear_in_progress() { _in_progress = false; } + bool in_progress() { return _in_progress; } + + void set_do_traversal(bool b); + bool do_traversal() { return _do_traversal; } + + void sample_young_list_rs_lengths(); + + // Yield for GC + void yield(); + + // shutdown + static void stop(); +};