1/*
2 * Copyright (c) 2014, 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#include "precompiled.hpp"
26#include "compiler/compilerDefinitions.hpp"
27
28#if INCLUDE_RTM_OPT
29
30#include "memory/allocation.inline.hpp"
31#include "runtime/task.hpp"
32#include "runtime/rtmLocking.hpp"
33
34
35// One-shot PeriodicTask subclass for enabling RTM locking
36uintx RTMLockingCounters::_calculation_flag = 0;
37
38class RTMLockingCalculationTask : public PeriodicTask {
39 public:
40 RTMLockingCalculationTask(size_t interval_time) : PeriodicTask(interval_time){ }
41
42 virtual void task() {
43 RTMLockingCounters::_calculation_flag = 1;
44 // Reclaim our storage and disenroll ourself
45 delete this;
46 }
47};
48
49void RTMLockingCounters::init() {
50 if (UseRTMLocking && RTMLockingCalculationDelay > 0) {
51 RTMLockingCalculationTask* task = new RTMLockingCalculationTask(RTMLockingCalculationDelay);
52 task->enroll();
53 } else {
54 _calculation_flag = 1;
55 }
56}
57
58//------------------------------print_on-------------------------------
59void RTMLockingCounters::print_on(outputStream* st) const {
60 tty->print_cr("# rtm locks total (estimated): " UINTX_FORMAT, _total_count * RTMTotalCountIncrRate);
61 tty->print_cr("# rtm lock aborts : " UINTX_FORMAT, _abort_count);
62 for (int i = 0; i < ABORT_STATUS_LIMIT; i++) {
63 tty->print_cr("# rtm lock aborts %d: " UINTX_FORMAT, i, _abortX_count[i]);
64 }
65}
66void RTMLockingCounters::print() const { print_on(tty); }
67
68#endif
69