1 /* 2 * Copyright (c) 2016, 2019, 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_JFR_WRITERS_JFRJAVAEVENTWRITER_HPP 26 #define SHARE_VM_JFR_WRITERS_JFRJAVAEVENTWRITER_HPP 27 28 #include "jni.h" 29 #include "memory/allocation.hpp" 30 31 class JavaThread; 32 class Thread; 33 34 class JfrJavaEventWriter : AllStatic { 35 friend class JfrCheckpointThreadClosure; 36 friend class JfrJavaEventWriterNotifyOperation; 37 friend class JfrJavaEventWriterNotificationClosure; 38 private: 39 static void notify(JavaThread* jt); 40 41 public: 42 static bool initialize(); 43 static void notify(); 44 static jobject event_writer(Thread* t); 45 static jobject new_event_writer(TRAPS); 46 static jboolean flush(jobject writer, jint used, jint requested, JavaThread* jt); 47 }; 48 49 #endif // SHARE_VM_JFR_WRITERS_JFRJAVAEVENTWRITER_HPP