| /* |
| * 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_PARALLEL_PSMARKSWEEP_HPP |
| #define SHARE_VM_GC_PARALLEL_PSMARKSWEEP_HPP |
| |
| #include "gc/serial/markSweep.hpp" |
| #include "gc/shared/collectorCounters.hpp" |
| #include "utilities/stack.hpp" |
| |
| class PSAdaptiveSizePolicy; |
| class PSYoungGen; |
| class PSOldGen; |
| |
| class PSMarkSweep : public MarkSweep { |
| private: |
| static elapsedTimer _accumulated_time; |
| static jlong _time_of_last_gc; // ms |
| static CollectorCounters* _counters; |
| |
| // Closure accessors |
| static OopClosure* mark_and_push_closure() { return &MarkSweep::mark_and_push_closure; } |
| static VoidClosure* follow_stack_closure() { return &MarkSweep::follow_stack_closure; } |
| static CLDClosure* follow_cld_closure() { return &MarkSweep::follow_cld_closure; } |
| static OopClosure* adjust_pointer_closure() { return &MarkSweep::adjust_pointer_closure; } |
| static CLDClosure* adjust_cld_closure() { return &MarkSweep::adjust_cld_closure; } |
| static BoolObjectClosure* is_alive_closure() { return &MarkSweep::is_alive; } |
| |
| // Mark live objects |
| static void mark_sweep_phase1(bool clear_all_softrefs); |
| // Calculate new addresses |
| static void mark_sweep_phase2(); |
| // Update pointers |
| static void mark_sweep_phase3(); |
| // Move objects to new positions |
| static void mark_sweep_phase4(); |
| |
| // Temporary data structures for traversal and storing/restoring marks |
| static void allocate_stacks(); |
| static void deallocate_stacks(); |
| |
| // If objects are left in eden after a collection, try to move the boundary |
| // and absorb them into the old gen. Returns true if eden was emptied. |
| static bool absorb_live_data_from_eden(PSAdaptiveSizePolicy* size_policy, |
| PSYoungGen* young_gen, |
| PSOldGen* old_gen); |
| |
| // Reset time since last full gc |
| static void reset_millis_since_last_gc(); |
| |
| public: |
| static void invoke(bool clear_all_softrefs); |
| static bool invoke_no_policy(bool clear_all_softrefs); |
| |
| static void initialize(); |
| |
| // Public accessors |
| static elapsedTimer* accumulated_time() { return &_accumulated_time; } |
| static CollectorCounters* counters() { return _counters; } |
| |
| // Time since last full gc (in milliseconds) |
| static jlong millis_since_last_gc(); |
| }; |
| |
| #endif // SHARE_VM_GC_PARALLEL_PSMARKSWEEP_HPP |