--- old/src/share/vm/gc_implementation/g1/concurrentMarkThread.hpp 2015-05-12 11:38:49.863653785 +0200 +++ /dev/null 2015-03-18 17:10:38.111854831 +0100 @@ -1,92 +0,0 @@ -/* - * Copyright (c) 2001, 2012, 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_CONCURRENTMARKTHREAD_HPP -#define SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTMARKTHREAD_HPP - -#include "gc_implementation/shared/concurrentGCThread.hpp" - -// The Concurrent Mark GC Thread (could be several in the future). -// This is copied from the Concurrent Mark Sweep GC Thread -// Still under construction. - -class ConcurrentMark; - -class ConcurrentMarkThread: public ConcurrentGCThread { - friend class VMStructs; - - double _vtime_start; // Initial virtual time. - double _vtime_accum; // Accumulated virtual time. - - double _vtime_mark_accum; - - public: - virtual void run(); - - private: - ConcurrentMark* _cm; - volatile bool _started; - volatile bool _in_progress; - - void sleepBeforeNextCycle(); - - static SurrogateLockerThread* _slt; - - public: - // Constructor - ConcurrentMarkThread(ConcurrentMark* cm); - - static void makeSurrogateLockerThread(TRAPS); - static SurrogateLockerThread* slt() { return _slt; } - - // Total virtual time so far. - double vtime_accum(); - // Marking virtual time so far - double vtime_mark_accum(); - - ConcurrentMark* cm() { return _cm; } - - void set_started() { assert(!_in_progress, "cycle in progress"); _started = true; } - void clear_started() { assert(_in_progress, "must be starting a cycle"); _started = false; } - bool started() { return _started; } - - void set_in_progress() { assert(_started, "must be starting a cycle"); _in_progress = true; } - void clear_in_progress() { assert(!_started, "must not be starting a new cycle"); _in_progress = false; } - bool in_progress() { return _in_progress; } - - // This flag returns true from the moment a marking cycle is - // initiated (during the initial-mark pause when started() is set) - // to the moment when the cycle completes (just after the next - // marking bitmap has been cleared and in_progress() is - // cleared). While this flag is true we will not start another cycle - // so that cycles do not overlap. We cannot use just in_progress() - // as the CM thread might take some time to wake up before noticing - // that started() is set and set in_progress(). - bool during_cycle() { return started() || in_progress(); } - - // shutdown - void stop(); -}; - -#endif // SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTMARKTHREAD_HPP --- /dev/null 2015-03-18 17:10:38.111854831 +0100 +++ new/src/share/vm/gc/g1/concurrentMarkThread.hpp 2015-05-12 11:38:49.680646163 +0200 @@ -0,0 +1,92 @@ +/* + * Copyright (c) 2001, 2015, 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_CONCURRENTMARKTHREAD_HPP +#define SHARE_VM_GC_G1_CONCURRENTMARKTHREAD_HPP + +#include "gc/shared/concurrentGCThread.hpp" + +// The Concurrent Mark GC Thread (could be several in the future). +// This is copied from the Concurrent Mark Sweep GC Thread +// Still under construction. + +class ConcurrentMark; + +class ConcurrentMarkThread: public ConcurrentGCThread { + friend class VMStructs; + + double _vtime_start; // Initial virtual time. + double _vtime_accum; // Accumulated virtual time. + + double _vtime_mark_accum; + + public: + virtual void run(); + + private: + ConcurrentMark* _cm; + volatile bool _started; + volatile bool _in_progress; + + void sleepBeforeNextCycle(); + + static SurrogateLockerThread* _slt; + + public: + // Constructor + ConcurrentMarkThread(ConcurrentMark* cm); + + static void makeSurrogateLockerThread(TRAPS); + static SurrogateLockerThread* slt() { return _slt; } + + // Total virtual time so far. + double vtime_accum(); + // Marking virtual time so far + double vtime_mark_accum(); + + ConcurrentMark* cm() { return _cm; } + + void set_started() { assert(!_in_progress, "cycle in progress"); _started = true; } + void clear_started() { assert(_in_progress, "must be starting a cycle"); _started = false; } + bool started() { return _started; } + + void set_in_progress() { assert(_started, "must be starting a cycle"); _in_progress = true; } + void clear_in_progress() { assert(!_started, "must not be starting a new cycle"); _in_progress = false; } + bool in_progress() { return _in_progress; } + + // This flag returns true from the moment a marking cycle is + // initiated (during the initial-mark pause when started() is set) + // to the moment when the cycle completes (just after the next + // marking bitmap has been cleared and in_progress() is + // cleared). While this flag is true we will not start another cycle + // so that cycles do not overlap. We cannot use just in_progress() + // as the CM thread might take some time to wake up before noticing + // that started() is set and set in_progress(). + bool during_cycle() { return started() || in_progress(); } + + // shutdown + void stop(); +}; + +#endif // SHARE_VM_GC_G1_CONCURRENTMARKTHREAD_HPP