1 /* |
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #include "precompiled.hpp" |
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26 #include "memory/allocation.inline.hpp" |
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27 #include "runtime/task.hpp" |
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28 #include "runtime/rtmLocking.hpp" |
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29 |
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30 // One-shot PeriodicTask subclass for enabling RTM locking |
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31 uintx RTMLockingCounters::_calculation_flag = 0; |
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32 |
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33 class RTMLockingCalculationTask : public PeriodicTask { |
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34 public: |
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35 RTMLockingCalculationTask(size_t interval_time) : PeriodicTask(interval_time){ } |
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36 |
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37 virtual void task() { |
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38 RTMLockingCounters::_calculation_flag = 1; |
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39 // Reclaim our storage and disenroll ourself |
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40 delete this; |
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41 } |
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42 }; |
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43 |
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44 void RTMLockingCounters::init() { |
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45 if (UseRTMLocking && RTMLockingCalculationDelay > 0) { |
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46 RTMLockingCalculationTask* task = new RTMLockingCalculationTask(RTMLockingCalculationDelay); |
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47 task->enroll(); |
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48 } else { |
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49 _calculation_flag = 1; |
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50 } |
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51 } |
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52 |
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53 //------------------------------print_on------------------------------- |
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54 void RTMLockingCounters::print_on(outputStream* st) { |
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55 tty->print_cr("# rtm locks total (estimated): " UINTX_FORMAT, _total_count * RTMTotalCountIncrRate); |
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56 tty->print_cr("# rtm lock aborts : " UINTX_FORMAT, _abort_count); |
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57 for (int i = 0; i < ABORT_STATUS_LIMIT; i++) { |
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58 tty->print_cr("# rtm lock aborts %d: " UINTX_FORMAT, i, _abortX_count[i]); |
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59 } |
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60 } |
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