| /* |
| * Copyright (c) 2013, 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. |
| * |
| */ |
| |
| #ifndef SHARE_VM_UTILITIES_TICKS_HPP |
| #define SHARE_VM_UTILITIES_TICKS_HPP |
| |
| #include "memory/allocation.hpp" |
| #include "utilities/globalDefinitions.hpp" |
| |
| class Ticks; |
| |
| class Tickspan VALUE_OBJ_CLASS_SPEC { |
| friend class Ticks; |
| friend Tickspan operator-(const Ticks& end, const Ticks& start); |
| |
| private: |
| jlong _span_ticks; |
| |
| Tickspan(const Ticks& end, const Ticks& start); |
| |
| public: |
| Tickspan() : _span_ticks(0) {} |
| |
| Tickspan& operator+=(const Tickspan& rhs) { |
| _span_ticks += rhs._span_ticks; |
| return *this; |
| } |
| |
| jlong value() const { |
| return _span_ticks; |
| } |
| |
| }; |
| |
| class Ticks VALUE_OBJ_CLASS_SPEC { |
| private: |
| jlong _stamp_ticks; |
| |
| public: |
| Ticks() : _stamp_ticks(0) { |
| assert((_stamp_ticks = invalid_time_stamp) == invalid_time_stamp, |
| "initial unstamped time value assignment"); |
| } |
| |
| Ticks& operator+=(const Tickspan& span) { |
| _stamp_ticks += span.value(); |
| return *this; |
| } |
| |
| Ticks& operator-=(const Tickspan& span) { |
| _stamp_ticks -= span.value(); |
| return *this; |
| } |
| |
| void stamp(); |
| |
| jlong value() const { |
| return _stamp_ticks; |
| } |
| |
| static const Ticks now(); |
| |
| #ifdef ASSERT |
| static const jlong invalid_time_stamp; |
| #endif |
| |
| #ifndef PRODUCT |
| // only for internal use by GC VM tests |
| friend class TimePartitionPhasesIteratorTest; |
| friend class GCTimerTest; |
| |
| private: |
| // implicit type conversion |
| Ticks(int ticks) : _stamp_ticks(ticks) {} |
| |
| #endif // !PRODUCT |
| |
| }; |
| |
| class TicksToTimeHelper : public AllStatic { |
| public: |
| enum Unit { |
| SECONDS = 1, |
| MILLISECONDS = 1000 |
| }; |
| static double seconds(const Tickspan& span); |
| static jlong milliseconds(const Tickspan& span); |
| }; |
| |
| #endif // SHARE_VM_UTILITIES_TICKS_HPP |