1 /* 2 * Copyright (c) 2019, 2021, Red Hat, Inc. 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_MODE_SHENANDOAHMODE_HPP 26 #define SHARE_GC_SHENANDOAH_MODE_SHENANDOAHMODE_HPP 27 28 #include "memory/allocation.hpp" 29 #include "runtime/java.hpp" 30 #include "utilities/formatBuffer.hpp" 31 32 class ShenandoahGeneration; 33 class ShenandoahHeuristics; 34 class ShenandoahOldHeuristics; 35 36 #define SHENANDOAH_CHECK_FLAG_SET(name) \ 37 do { \ 38 if (!(name)) { \ 39 err_msg message("GC mode needs -XX:+" #name " to work correctly"); \ 40 vm_exit_during_initialization("Error", message); \ 41 } \ 42 } while (0) 43 44 #define SHENANDOAH_CHECK_FLAG_UNSET(name) \ 45 do { \ 46 if ((name)) { \ 47 err_msg message("GC mode needs -XX:-" #name " to work correctly"); \ 48 vm_exit_during_initialization("Error", message); \ 49 } \ 50 } while (0) 51 52 class ShenandoahMode : public CHeapObj<mtGC> { 53 public: 54 virtual void initialize_flags() const = 0; 55 virtual ShenandoahHeuristics* initialize_heuristics(ShenandoahGeneration* generation) const; 56 virtual const char* name() = 0; 57 virtual bool is_diagnostic() = 0; 58 virtual bool is_experimental() = 0; 59 virtual bool is_generational() { return false; } 60 }; 61 62 #endif // SHARE_GC_SHENANDOAH_MODE_SHENANDOAHMODE_HPP