1 /* 2 * Copyright (c) 2012, 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_RECORDER_REPOSITORY_JFRRCHUNKSIZENOTIFIER_HPP 26 #define SHARE_VM_JFR_RECORDER_REPOSITORY_JFRRCHUNKSIZENOTIFIER_HPP 27 28 #include "memory/allocation.hpp" 29 30 // 31 // Responsible for notifications about current chunk size now exceeding threshold. 32 // This is a means to initiate a chunk rotation on the basis of size written. 33 // 34 class JfrChunkSizeNotifier : AllStatic { 35 friend class JfrRecorder; 36 private: 37 static size_t _chunk_size_threshold; 38 static void release_monitor(); 39 public: 40 static void set_chunk_size_threshold(size_t bytes); 41 static size_t chunk_size_threshold(); 42 static void notify(); 43 }; 44 45 #endif // SHARE_VM_JFR_RECORDER_REPOSITORY_JFRRCHUNKSIZENOTIFIER_HPP