1 /* 2 * Copyright (c) 2014, 2018, 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/compilerConfig.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 36 uintx RTMLockingCounters::_calculation_flag = 0; 37 38 class 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 49 void 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------------------------------- 59 void RTMLockingCounters::print_on(outputStream* st) { 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 } 66 67 #endif