1/*
2 * Copyright (c) 2015, 2017, 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#ifndef SHARE_GC_Z_ZMETRONOME_HPP
25#define SHARE_GC_Z_ZMETRONOME_HPP
26
27#include "memory/allocation.hpp"
28#include "runtime/mutex.hpp"
29
30class ZMetronome : public StackObj {
31private:
32 Monitor _monitor;
33 const uint64_t _interval_ms;
34 uint64_t _start_ms;
35 uint64_t _nticks;
36 bool _stopped;
37
38public:
39 ZMetronome(uint64_t hz);
40
41 bool wait_for_tick();
42 void stop();
43};
44
45#endif // SHARE_GC_Z_ZMETRONOME_HPP
46