1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,93 @@
1.4 +/*
1.5 + * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEP_HPP
1.29 +#define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEP_HPP
1.30 +
1.31 +#include "gc_implementation/shared/collectorCounters.hpp"
1.32 +#include "gc_implementation/shared/markSweep.inline.hpp"
1.33 +#include "utilities/stack.hpp"
1.34 +
1.35 +class PSAdaptiveSizePolicy;
1.36 +class PSYoungGen;
1.37 +class PSOldGen;
1.38 +
1.39 +class PSMarkSweep : public MarkSweep {
1.40 + private:
1.41 + static elapsedTimer _accumulated_time;
1.42 + static jlong _time_of_last_gc; // ms
1.43 + static CollectorCounters* _counters;
1.44 +
1.45 + // Closure accessors
1.46 + static OopClosure* mark_and_push_closure() { return &MarkSweep::mark_and_push_closure; }
1.47 + static KlassClosure* follow_klass_closure() { return &MarkSweep::follow_klass_closure; }
1.48 + static VoidClosure* follow_stack_closure() { return (VoidClosure*)&MarkSweep::follow_stack_closure; }
1.49 + static OopClosure* adjust_pointer_closure() { return (OopClosure*)&MarkSweep::adjust_pointer_closure; }
1.50 + static KlassClosure* adjust_klass_closure() { return &MarkSweep::adjust_klass_closure; }
1.51 + static BoolObjectClosure* is_alive_closure() { return (BoolObjectClosure*)&MarkSweep::is_alive; }
1.52 +
1.53 + debug_only(public:) // Used for PSParallelCompact debugging
1.54 + // Mark live objects
1.55 + static void mark_sweep_phase1(bool clear_all_softrefs);
1.56 + // Calculate new addresses
1.57 + static void mark_sweep_phase2();
1.58 + debug_only(private:) // End used for PSParallelCompact debugging
1.59 + // Update pointers
1.60 + static void mark_sweep_phase3();
1.61 + // Move objects to new positions
1.62 + static void mark_sweep_phase4();
1.63 +
1.64 + debug_only(public:) // Used for PSParallelCompact debugging
1.65 + // Temporary data structures for traversal and storing/restoring marks
1.66 + static void allocate_stacks();
1.67 + static void deallocate_stacks();
1.68 + static void set_ref_processor(ReferenceProcessor* rp) { // delete this method
1.69 + _ref_processor = rp;
1.70 + }
1.71 + debug_only(private:) // End used for PSParallelCompact debugging
1.72 +
1.73 + // If objects are left in eden after a collection, try to move the boundary
1.74 + // and absorb them into the old gen. Returns true if eden was emptied.
1.75 + static bool absorb_live_data_from_eden(PSAdaptiveSizePolicy* size_policy,
1.76 + PSYoungGen* young_gen,
1.77 + PSOldGen* old_gen);
1.78 +
1.79 + // Reset time since last full gc
1.80 + static void reset_millis_since_last_gc();
1.81 +
1.82 + public:
1.83 + static void invoke(bool clear_all_softrefs);
1.84 + static bool invoke_no_policy(bool clear_all_softrefs);
1.85 +
1.86 + static void initialize();
1.87 +
1.88 + // Public accessors
1.89 + static elapsedTimer* accumulated_time() { return &_accumulated_time; }
1.90 + static CollectorCounters* counters() { return _counters; }
1.91 +
1.92 + // Time since last full gc (in milliseconds)
1.93 + static jlong millis_since_last_gc();
1.94 +};
1.95 +
1.96 +#endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEP_HPP
