1 /* 2 * Copyright (c) 2020, 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_SHENANDOAHSAFEPOINT_HPP 26 #define SHARE_GC_SHENANDOAH_SHENANDOAHSAFEPOINT_HPP 27 28 #include "memory/allocation.hpp" 29 #include "runtime/vmThread.hpp" 30 #include "runtime/vmOperations.hpp" 31 32 33 class ShenandoahSafepoint : public AllStatic { 34 public: 35 // check if Shenandoah GC safepoint is in progress 36 static inline bool is_at_shenandoah_safepoint() { 37 if (!SafepointSynchronize::is_at_safepoint()) return false; 38 39 VM_Operation* vm_op = VMThread::vm_operation(); 40 if (vm_op == NULL) return false; 41 42 VM_Operation::VMOp_Type type = vm_op->type(); 43 return type == VM_Operation::VMOp_ShenandoahInitMark || 44 type == VM_Operation::VMOp_ShenandoahFinalMarkStartEvac || 45 type == VM_Operation::VMOp_ShenandoahFinalEvac || 46 type == VM_Operation::VMOp_ShenandoahInitTraversalGC || 47 type == VM_Operation::VMOp_ShenandoahFinalTraversalGC || 48 type == VM_Operation::VMOp_ShenandoahInitUpdateRefs || 49 type == VM_Operation::VMOp_ShenandoahFinalUpdateRefs || 50 type == VM_Operation::VMOp_ShenandoahFullGC || 51 type == VM_Operation::VMOp_ShenandoahDegeneratedGC; 52 } 53 }; 54 55 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHSAFEPOINT_HPP