1 /* 2 * Copyright (c) 2001, 2019, Oracle and/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_SERIAL_GENMARKSWEEP_HPP 26 #define SHARE_GC_SERIAL_GENMARKSWEEP_HPP 27 28 #include "gc/serial/markSweep.hpp" 29 30 class GenMarkSweep : public MarkSweep { 31 friend class VM_MarkSweep; 32 public: 33 static void invoke_at_safepoint(ReferenceProcessor* rp, bool clear_all_softrefs); 34 35 private: 36 37 // Mark live objects 38 static void mark_sweep_phase1(bool clear_all_softrefs); 39 // Calculate new addresses 40 static void mark_sweep_phase2(); 41 // Update pointers 42 static void mark_sweep_phase3(); 43 // Move objects to new positions 44 static void mark_sweep_phase4(); 45 46 // Temporary data structures for traversal and storing/restoring marks 47 static void allocate_stacks(); 48 static void deallocate_stacks(); 49 }; 50 51 #endif // SHARE_GC_SERIAL_GENMARKSWEEP_HPP 52