1 /* 2 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHWORKERPOLICY_HPP 25 #define SHARE_GC_SHENANDOAH_SHENANDOAHWORKERPOLICY_HPP 26 27 #include "memory/allocation.hpp" 28 29 class ShenandoahWorkerPolicy : AllStatic { 30 private: 31 static uint _prev_par_marking; 32 static uint _prev_conc_marking; 33 static uint _prev_conc_root_proc; 34 static uint _prev_conc_evac; 35 static uint _prev_fullgc; 36 static uint _prev_degengc; 37 static uint _prev_stw_traversal; 38 static uint _prev_conc_traversal; 39 static uint _prev_conc_update_ref; 40 static uint _prev_par_update_ref; 41 static uint _prev_conc_cleanup; 42 static uint _prev_conc_reset; 43 44 public: 45 // Calculate the number of workers for initial marking 46 static uint calc_workers_for_init_marking(); 47 48 // Calculate the number of workers for concurrent marking 49 static uint calc_workers_for_conc_marking(); 50 51 // Calculate the number of workers for final marking 52 static uint calc_workers_for_final_marking(); 53 54 // Calculate workers for concurrent root processing 55 static uint calc_workers_for_conc_root_processing(); 56 57 // Calculate workers for concurrent evacuation (concurrent GC) 58 static uint calc_workers_for_conc_evac(); 59 60 // Calculate workers for parallel full gc 61 static uint calc_workers_for_fullgc(); 62 63 // Calculate workers for parallel degenerated gc 64 static uint calc_workers_for_stw_degenerated(); 65 66 // Calculate workers for Stop-the-world traversal GC 67 static uint calc_workers_for_stw_traversal(); 68 69 // Calculate workers for concurrent traversal GC 70 static uint calc_workers_for_conc_traversal(); 71 72 // Calculate workers for concurrent reference update 73 static uint calc_workers_for_conc_update_ref(); 74 75 // Calculate workers for parallel/final reference update 76 static uint calc_workers_for_final_update_ref(); 77 78 // Calculate workers for concurrent precleaning 79 static uint calc_workers_for_conc_preclean(); 80 81 // Calculate workers for concurrent cleanup 82 static uint calc_workers_for_conc_cleanup(); 83 84 // Calculate workers for concurrent reset 85 static uint calc_workers_for_conc_reset(); 86 }; 87 88 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHWORKERPOLICY_HPP