1 /* 2 * Copyright (c) 2017, 2019, 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/allocation.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_root_proc; 35 static uint _prev_conc_evac_update; 36 static uint _prev_fullgc; 37 static uint _prev_degengc; 38 static uint _prev_conc_update_ref; 39 static uint _prev_par_update_ref; 40 static uint _prev_conc_cleanup; 41 static uint _prev_conc_reset; 42 43 public: 44 // Calculate the number of workers for initial marking 45 static uint calc_workers_for_init_marking(); 46 47 // Calculate the number of workers for concurrent marking 48 static uint calc_workers_for_conc_marking(); 49 50 // Calculate the number of workers for final marking 51 static uint calc_workers_for_final_marking(); 52 53 // Calculate workers for concurrent root processing 54 static uint calc_workers_for_conc_root_processing(); 55 56 // Calculate workers for concurrent evac-update (concurrent GC) 57 static uint calc_workers_for_conc_evac_update(); 58 59 // Calculate workers for parallel full gc 60 static uint calc_workers_for_fullgc(); 61 62 // Calculate workers for parallel degenerated gc 63 static uint calc_workers_for_stw_degenerated(); 64 65 // Calculate workers for parallel/final reference update 66 static uint calc_workers_for_final_update_ref(); 67 68 // Calculate workers for concurrent precleaning 69 static uint calc_workers_for_conc_preclean(); 70 71 // Calculate workers for concurrent cleanup 72 static uint calc_workers_for_conc_cleanup(); 73 74 // Calculate workers for concurrent reset 75 static uint calc_workers_for_conc_reset(); 76 }; 77 78 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHWORKERPOLICY_HPP