author | mgronlun |
Wed, 18 Sep 2019 11:32:34 +0200 | |
branch | JEP-349-branch |
changeset 58204 | 5d1f1ff2ad55 |
parent 53520 | 5178e4b58b17 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "logging/log.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "runtime/timer.hpp" |
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#include "utilities/ostream.hpp" |
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double TimeHelper::counter_to_seconds(jlong counter) { |
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double freq = (double) os::elapsed_frequency(); |
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return counter / freq; |
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} |
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double TimeHelper::counter_to_millis(jlong counter) { |
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return counter_to_seconds(counter) * 1000.0; |
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} |
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jlong TimeHelper::millis_to_counter(jlong millis) { |
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jlong freq = os::elapsed_frequency() / MILLIUNITS; |
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return millis * freq; |
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} |
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elapsedTimer::elapsedTimer(jlong time, jlong timeUnitsPerSecond) { |
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_active = false; |
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jlong osTimeUnitsPerSecond = os::elapsed_frequency(); |
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assert(osTimeUnitsPerSecond % 1000 == 0, "must be"); |
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assert(timeUnitsPerSecond % 1000 == 0, "must be"); |
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while (osTimeUnitsPerSecond < timeUnitsPerSecond) { |
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timeUnitsPerSecond /= 1000; |
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time *= 1000; |
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} |
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while (osTimeUnitsPerSecond > timeUnitsPerSecond) { |
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timeUnitsPerSecond *= 1000; |
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time /= 1000; |
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} |
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_counter = time; |
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} |
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void elapsedTimer::add(elapsedTimer t) { |
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_counter += t._counter; |
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} |
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void elapsedTimer::start() { |
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if (!_active) { |
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_active = true; |
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_start_counter = os::elapsed_counter(); |
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} |
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} |
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void elapsedTimer::stop() { |
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if (_active) { |
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_counter += os::elapsed_counter() - _start_counter; |
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_active = false; |
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} |
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} |
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double elapsedTimer::seconds() const { |
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return TimeHelper::counter_to_seconds(_counter); |
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} |
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jlong elapsedTimer::milliseconds() const { |
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return (jlong)TimeHelper::counter_to_millis(_counter); |
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} |
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jlong elapsedTimer::active_ticks() const { |
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if (!_active) { |
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return ticks(); |
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} |
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jlong counter = _counter + os::elapsed_counter() - _start_counter; |
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return counter; |
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} |
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void TimeStamp::update_to(jlong ticks) { |
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_counter = ticks; |
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if (_counter == 0) _counter = 1; |
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assert(is_updated(), "must not look clear"); |
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} |
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void TimeStamp::update() { |
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update_to(os::elapsed_counter()); |
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} |
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double TimeStamp::seconds() const { |
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assert(is_updated(), "must not be clear"); |
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jlong new_count = os::elapsed_counter(); |
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return TimeHelper::counter_to_seconds(new_count - _counter); |
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} |
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jlong TimeStamp::milliseconds() const { |
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assert(is_updated(), "must not be clear"); |
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jlong new_count = os::elapsed_counter(); |
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return (jlong)TimeHelper::counter_to_millis(new_count - _counter); |
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} |
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jlong TimeStamp::ticks_since_update() const { |
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assert(is_updated(), "must not be clear"); |
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return os::elapsed_counter() - _counter; |
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} |