1 /* 2 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. 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_VM_LEAKPROFILER_EMITEVENTOPERATION_HPP 26 #define SHARE_VM_LEAKPROFILER_EMITEVENTOPERATION_HPP 27 28 #include "runtime/vm_operations.hpp" 29 30 class BFSClosure; 31 class EdgeStore; 32 class EdgeQueue; 33 class JfrThreadData; 34 class ObjectSample; 35 class ObjectSampler; 36 37 // Safepoint operation for emitting object sample events 38 class EmitEventOperation : public VM_Operation { 39 private: 40 jlong _cutoff_ticks; 41 bool _emit_all; 42 VMThread* _vm_thread; 43 JfrThreadData* _vm_thread_data; 44 ObjectSampler* _object_sampler; 45 46 void write_event(const ObjectSample* sample, EdgeStore* edge_store); 47 int write_events(EdgeStore* edge_store); 48 49 public: 50 EmitEventOperation(jlong cutoff_ticks, bool emit_all) : 51 _cutoff_ticks(cutoff_ticks), 52 _emit_all(emit_all), 53 _vm_thread(NULL), 54 _vm_thread_data(NULL), 55 _object_sampler(NULL) { 56 } 57 58 VMOp_Type type() const { 59 return VMOp_GC_HeapInspection; 60 } 61 62 Mode evaluation_mode() const { 63 return _safepoint; 64 } 65 66 virtual void doit(); 67 }; 68 69 #endif // SHARE_VM_LEAKPROFILER_EMITEVENTOPERATION_HPP