1 /* 2 * Copyright (c) 2013, 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_SHENANDOAHVMOPERATIONS_HPP 26 #define SHARE_GC_SHENANDOAH_SHENANDOAHVMOPERATIONS_HPP 27 28 #include "gc/shared/gcVMOperations.hpp" 29 30 // VM_operations for the Shenandoah Collector. 31 // 32 // VM_ShenandoahOperation 33 // - VM_ShenandoahInitMark: initiate concurrent marking 34 // - VM_ShenandoahReferenceOperation: 35 // - VM_ShenandoahFinalMarkStartEvac: finish up concurrent marking, and start evacuation 36 // - VM_ShenandoahInitUpdateRefs: initiate update references 37 // - VM_ShenandoahFinalUpdateRefs: finish up update references 38 // - VM_ShenandoahFullGC: do full GC 39 40 class VM_ShenandoahOperation : public VM_Operation { 41 protected: 42 uint _gc_id; 43 public: 44 VM_ShenandoahOperation() : _gc_id(GCId::current()) {}; 45 }; 46 47 class VM_ShenandoahReferenceOperation : public VM_ShenandoahOperation { 48 public: 49 VM_ShenandoahReferenceOperation() : VM_ShenandoahOperation() {}; 50 bool doit_prologue(); 51 void doit_epilogue(); 52 }; 53 54 class VM_ShenandoahInitMark: public VM_ShenandoahOperation { 55 public: 56 VM_ShenandoahInitMark() : VM_ShenandoahOperation() {}; 57 VM_Operation::VMOp_Type type() const { return VMOp_ShenandoahInitMark; } 58 const char* name() const { return "Shenandoah Init Marking"; } 59 virtual void doit(); 60 }; 61 62 class VM_ShenandoahFinalMarkStartEvac: public VM_ShenandoahReferenceOperation { 63 public: 64 VM_ShenandoahFinalMarkStartEvac() : VM_ShenandoahReferenceOperation() {}; 65 VM_Operation::VMOp_Type type() const { return VMOp_ShenandoahFinalMarkStartEvac; } 66 const char* name() const { return "Shenandoah Final Mark and Start Evacuation"; } 67 virtual void doit(); 68 }; 69 70 class VM_ShenandoahDegeneratedGC: public VM_ShenandoahReferenceOperation { 71 private: 72 // Really the ShenandoahHeap::ShenandoahDegenerationPoint, but casted to int here 73 // in order to avoid dependency on ShenandoahHeap 74 int _point; 75 public: 76 VM_ShenandoahDegeneratedGC(int point) : VM_ShenandoahReferenceOperation(), _point(point) {}; 77 VM_Operation::VMOp_Type type() const { return VMOp_ShenandoahDegeneratedGC; } 78 const char* name() const { return "Shenandoah Degenerated GC"; } 79 virtual void doit(); 80 }; 81 82 class VM_ShenandoahFullGC : public VM_ShenandoahReferenceOperation { 83 private: 84 GCCause::Cause _gc_cause; 85 public: 86 VM_ShenandoahFullGC(GCCause::Cause gc_cause) : VM_ShenandoahReferenceOperation(), _gc_cause(gc_cause) {}; 87 VM_Operation::VMOp_Type type() const { return VMOp_ShenandoahFullGC; } 88 const char* name() const { return "Shenandoah Full GC"; } 89 virtual void doit(); 90 }; 91 92 class VM_ShenandoahInitUpdateRefs: public VM_ShenandoahOperation { 93 public: 94 VM_ShenandoahInitUpdateRefs() : VM_ShenandoahOperation() {}; 95 VM_Operation::VMOp_Type type() const { return VMOp_ShenandoahInitUpdateRefs; } 96 const char* name() const { return "Shenandoah Init Update References"; } 97 virtual void doit(); 98 }; 99 100 class VM_ShenandoahFinalUpdateRefs: public VM_ShenandoahOperation { 101 public: 102 VM_ShenandoahFinalUpdateRefs() : VM_ShenandoahOperation() {}; 103 VM_Operation::VMOp_Type type() const { return VMOp_ShenandoahFinalUpdateRefs; } 104 const char* name() const { return "Shenandoah Final Update References"; } 105 virtual void doit(); 106 }; 107 108 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHVMOPERATIONS_HPP