1 /* 2 * Copyright (c) 2017, Red Hat, Inc. and/or its affiliates. 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 25 #ifndef SHARE_VM_GC_SHENANDOAH_SHENANDOAHWORKERPOLICY_HPP 26 #define SHARE_VM_GC_SHENANDOAH_SHENANDOAHWORKERPOLICY_HPP 27 28 #include "memory/allocation.hpp" 29 30 31 class ShenandoahWorkerPolicy : AllStatic { 32 private: 33 static uint _prev_par_marking; 34 static uint _prev_conc_marking; 35 static uint _prev_conc_evac; 36 static uint _prev_fullgc; 37 static uint _prev_degengc; 38 static uint _prev_stw_partial; 39 static uint _prev_conc_partial; 40 static uint _prev_stw_traversal; 41 static uint _prev_conc_traversal; 42 static uint _prev_conc_update_ref; 43 static uint _prev_par_update_ref; 44 static uint _prev_conc_cleanup; 45 46 public: 47 // Calculate the number of workers for initial marking 48 static uint calc_workers_for_init_marking(); 49 50 // Calculate the number of workers for concurrent marking 51 static uint calc_workers_for_conc_marking(); 52 53 // Calculate the number of workers for final marking 54 static uint calc_workers_for_final_marking(); 55 56 // Calculate workers for concurrent evacuation (concurrent GC) 57 static uint calc_workers_for_conc_evac(); 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 Stop-the-world partial GC 66 static uint calc_workers_for_stw_partial(); 67 68 // Calculate workers for concurrent partial GC 69 static uint calc_workers_for_conc_partial(); 70 71 // Calculate workers for Stop-the-world traversal GC 72 static uint calc_workers_for_stw_traversal(); 73 74 // Calculate workers for concurrent traversal GC 75 static uint calc_workers_for_conc_traversal(); 76 77 // Calculate workers for concurrent reference update 78 static uint calc_workers_for_conc_update_ref(); 79 80 // Calculate workers for parallel/final reference update 81 static uint calc_workers_for_final_update_ref(); 82 83 // Calculate workers for concurrent precleaning 84 static uint calc_workers_for_conc_preclean(); 85 86 // Calculate workers for concurrent cleanup 87 static uint calc_workers_for_conc_cleanup(); 88 }; 89 90 #endif // SHARE_VM_GC_SHENANDOAH_SHENANDOAHWORKERPOLICY_HPP