/*
* 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);
tty->print_cr("# rtm lock aborts (total): " UINTX_FORMAT, _abort_count);
for (int i = 0 ; i < ABORT_STATUS_LIMIT; i++) {
tty->print_cr("# rtm lock aborts %d (%s): " UINTX_FORMAT, i, _abortX_desc[i], _abortX_count[i]);
}
}
void RTMLockingCounters::print() const { print_on(tty); }
#endif
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