1 /* 2 * Copyright (c) 2021, Amazon.com, Inc. or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHOLDGC_HPP 26 #define SHARE_GC_SHENANDOAH_SHENANDOAHOLDGC_HPP 27 28 #include "gc/shared/gcCause.hpp" 29 #include "gc/shenandoah/shenandoahConcurrentGC.hpp" 30 #include "gc/shenandoah/shenandoahVerifier.hpp" 31 32 class ShenandoahGeneration; 33 34 class ShenandoahOldGC : public ShenandoahConcurrentGC { 35 public: 36 ShenandoahOldGC(ShenandoahGeneration* generation, ShenandoahSharedFlag& allow_preemption); 37 bool collect(GCCause::Cause cause); 38 39 protected: 40 virtual void op_final_mark(); 41 42 private: 43 ShenandoahHeapRegion** _coalesce_and_fill_region_array; 44 45 void start_old_evacuations(); 46 bool entry_coalesce_and_fill(); 47 ShenandoahSharedFlag& _allow_preemption; 48 bool op_coalesce_and_fill(); 49 void entry_coalesce_and_fill_message(char *buf, size_t len) const; 50 }; 51 52 53 #endif //SHARE_GC_SHENANDOAH_SHENANDOAHOLDGC_HPP