1 /* 2 * Copyright (c) 2013, 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_VM_GC_SHENANDOAH_SHENANDOAHCOLLECTORPOLICY_HPP 25 #define SHARE_VM_GC_SHENANDOAH_SHENANDOAHCOLLECTORPOLICY_HPP 26 27 #include "gc/shared/collectorPolicy.hpp" 28 #include "gc/shenandoah/shenandoahHeap.hpp" 29 #include "gc/shenandoah/shenandoahTracer.hpp" 30 #include "utilities/ostream.hpp" 31 32 class ShenandoahCollectorPolicy: public CollectorPolicy { 33 private: 34 size_t _success_concurrent_gcs; 35 size_t _success_degenerated_gcs; 36 size_t _success_full_gcs; 37 size_t _alloc_failure_degenerated; 38 size_t _alloc_failure_degenerated_upgrade_to_full; 39 size_t _alloc_failure_full; 40 size_t _explicit_concurrent; 41 size_t _explicit_full; 42 size_t _implicit_concurrent; 43 size_t _implicit_full; 44 size_t _degen_points[ShenandoahHeap::_DEGENERATED_LIMIT]; 45 46 ShenandoahSharedFlag _in_shutdown; 47 48 ShenandoahTracer* _tracer; 49 50 size_t _cycle_counter; 51 52 public: 53 ShenandoahCollectorPolicy(); 54 55 void initialize_alignments(); 56 57 // TODO: This is different from gc_end: that one encompasses one VM operation. 58 // These two encompass the entire cycle. 59 void record_cycle_start(); 60 61 void record_success_concurrent(); 62 void record_success_degenerated(); 63 void record_success_full(); 64 void record_alloc_failure_to_degenerated(ShenandoahHeap::ShenandoahDegenPoint point); 65 void record_alloc_failure_to_full(); 66 void record_degenerated_upgrade_to_full(); 67 void record_explicit_to_concurrent(); 68 void record_explicit_to_full(); 69 void record_implicit_to_concurrent(); 70 void record_implicit_to_full(); 71 72 void record_shutdown(); 73 bool is_at_shutdown(); 74 75 ShenandoahTracer* tracer() {return _tracer;} 76 77 size_t cycle_counter() const; 78 79 void print_gc_stats(outputStream* out) const; 80 }; 81 82 #endif // SHARE_VM_GC_SHENANDOAH_SHENANDOAHCOLLECTORPOLICY_HPP