| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.hyracks.api.dataflow; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.hyracks.api.comm.IFrameWriter; |
| import org.apache.hyracks.api.context.IHyracksTaskContext; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| import org.apache.hyracks.api.job.profiling.IStatsCollector; |
| import org.apache.hyracks.api.job.profiling.counters.ICounter; |
| |
| public class TimedFrameWriter implements IFrameWriter, IPassableTimer { |
| |
| // The downstream data consumer of this writer. |
| private final IFrameWriter writer; |
| private long frameStart = 0; |
| final ICounter counter; |
| final IStatsCollector collector; |
| final String name; |
| |
| public TimedFrameWriter(IFrameWriter writer, IStatsCollector collector, String name, ICounter counter) { |
| this.writer = writer; |
| this.collector = collector; |
| this.name = name; |
| this.counter = counter; |
| } |
| |
| protected TimedFrameWriter(IFrameWriter writer, IStatsCollector collector, String name) { |
| this(writer, collector, name, collector.getOrAddOperatorStats(name).getTimeCounter()); |
| } |
| |
| @Override |
| public final void open() throws HyracksDataException { |
| try { |
| startClock(); |
| writer.open(); |
| } finally { |
| stopClock(); |
| } |
| } |
| |
| @Override |
| public final void nextFrame(ByteBuffer buffer) throws HyracksDataException { |
| try { |
| startClock(); |
| writer.nextFrame(buffer); |
| } finally { |
| stopClock(); |
| } |
| } |
| |
| @Override |
| public final void flush() throws HyracksDataException { |
| try { |
| startClock(); |
| writer.flush(); |
| } finally { |
| stopClock(); |
| } |
| } |
| |
| @Override |
| public final void fail() throws HyracksDataException { |
| writer.fail(); |
| } |
| |
| @Override |
| public void close() throws HyracksDataException { |
| try { |
| startClock(); |
| writer.close(); |
| } finally { |
| stopClock(); |
| } |
| } |
| |
| private void stopClock() { |
| pause(); |
| collector.giveClock(this); |
| } |
| |
| private void startClock() { |
| if (frameStart > 0) { |
| return; |
| } |
| frameStart = collector.takeClock(this); |
| } |
| |
| @Override |
| public void resume() { |
| if (frameStart > 0) { |
| return; |
| } |
| long nt = System.nanoTime(); |
| frameStart = nt; |
| } |
| |
| @Override |
| public void pause() { |
| if (frameStart > 1) { |
| long nt = System.nanoTime(); |
| long delta = nt - frameStart; |
| counter.update(delta); |
| frameStart = -1; |
| } |
| } |
| |
| public static IFrameWriter time(IFrameWriter writer, IHyracksTaskContext ctx, String name) |
| throws HyracksDataException { |
| return writer instanceof TimedFrameWriter ? writer |
| : new TimedFrameWriter(writer, ctx.getStatsCollector(), name); |
| } |
| } |