1 /* 2 * Copyright (c) 1998, 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_RUNTIME_MEMPROFILER_HPP 26 #define SHARE_RUNTIME_MEMPROFILER_HPP 27 28 // Prints periodic memory usage trace of HotSpot VM 29 30 class MemProfilerTask; 31 32 class MemProfiler : AllStatic { 33 friend class MemProfilerTask; 34 private: 35 static MemProfilerTask* _task; 36 static FILE* _log_fp; 37 // Do trace (callback from MemProfilerTask and from disengage) 38 static void do_trace() PRODUCT_RETURN; 39 public: 40 // Start/stop the profiler 41 static void engage() PRODUCT_RETURN; 42 static void disengage() PRODUCT_RETURN; 43 // Tester 44 static bool is_active() PRODUCT_RETURN0; 45 }; 46 47 #endif // SHARE_RUNTIME_MEMPROFILER_HPP 48