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
30class MemProfilerTask;
31
32class 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