1 /* 2 * Copyright (c) 2017, 2022, 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_SHENANDOAHWORKERPOLICY_HPP 26 #define SHARE_GC_SHENANDOAH_SHENANDOAHWORKERPOLICY_HPP 27 28 #include "memory/allStatic.hpp" 29 30 class ShenandoahWorkerPolicy : AllStatic { 31 private: 32 static uint _prev_par_marking; 33 static uint _prev_conc_marking; 34 static uint _prev_conc_rs_scanning; 35 static uint _prev_conc_root_proc; 36 static uint _prev_conc_refs_proc; 37 static uint _prev_conc_evac; 38 static uint _prev_fullgc; 39 static uint _prev_degengc; 40 static uint _prev_conc_update_ref; 41 static uint _prev_par_update_ref; 42 static uint _prev_conc_cleanup; 43 static uint _prev_conc_reset; 44 45 public: 46 // Calculate the number of workers for initial marking 47 static uint calc_workers_for_init_marking(); 48 49 // Calculate the number of workers for concurrent marking 50 static uint calc_workers_for_conc_marking(); 51 52 // Calculate the number of workers for remembered set scanning 53 static uint calc_workers_for_rs_scanning(); 54 55 // Calculate the number of workers for final marking 56 static uint calc_workers_for_final_marking(); 57 58 // Calculate workers for concurrent root processing 59 static uint calc_workers_for_conc_root_processing(); 60 61 // Calculate workers for concurrent refs processing 62 static uint calc_workers_for_conc_refs_processing(); 63 64 // Calculate workers for concurrent evacuation (concurrent GC) 65 static uint calc_workers_for_conc_evac(); 66 67 // Calculate workers for parallel full gc 68 static uint calc_workers_for_fullgc(); 69 70 // Calculate workers for parallel degenerated gc 71 static uint calc_workers_for_stw_degenerated(); 72 73 // Calculate workers for concurrent reference update 74 static uint calc_workers_for_conc_update_ref(); 75 76 // Calculate workers for parallel/final reference update 77 static uint calc_workers_for_final_update_ref(); 78 79 // Calculate workers for concurrent cleanup 80 static uint calc_workers_for_conc_cleanup(); 81 82 // Calculate workers for concurrent reset 83 static uint calc_workers_for_conc_reset(); 84 }; 85 86 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHWORKERPOLICY_HPP