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