/*
* Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "compiler/compilerDefinitions.hpp"
#if INCLUDE_RTM_OPT
#include "memory/allocation.inline.hpp"
#include "runtime/task.hpp"
#include "runtime/rtmLocking.hpp"
// One-shot PeriodicTask subclass for enabling RTM locking
uintx RTMLockingCounters::_calculation_flag = 0;
class RTMLockingCalculationTask : public PeriodicTask {
public:
RTMLockingCalculationTask(size_t interval_time) : PeriodicTask(interval_time){ }
virtual void task() {
RTMLockingCounters::_calculation_flag = 1;
// Reclaim our storage and disenroll ourself
delete this;
}
};
void RTMLockingCounters::init() {
if (UseRTMLocking && RTMLockingCalculationDelay > 0) {
RTMLockingCalculationTask* task = new RTMLockingCalculationTask(RTMLockingCalculationDelay);
task->enroll();
} else {
_calculation_flag = 1;
}
}
const char* RTMLockingCounters::_abortX_desc[ABORT_STATUS_LIMIT] = {
"abort instruction ",
"may succeed on retry",
"thread conflict ",
"buffer overflow ",
"debug or trap hit ",
"maximum nested depth"
};
//------------------------------print_on-------------------------------
void RTMLockingCounters::print_on(outputStream* st) const {
tty->print_cr("# rtm locks total (estimated): " UINTX_FORMAT, _total_count * RTMTotalCountIncrRate);
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