Update Batching.java, KVSafeBatching.java, and ParallelUtils.java
This commit is contained in:
Andrea Cavalli
parent
8813ef3e88
commit
4b11b7fd94
@ -1,213 +0,0 @@
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package org.warp.commonutils.batch;
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import com.google.common.util.concurrent.AtomicDouble;
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import java.util.Collection;
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import java.util.List;
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import java.util.concurrent.ConcurrentLinkedQueue;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.atomic.AtomicBoolean;
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import java.util.concurrent.locks.ReentrantLock;
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public abstract class Batching<T> {
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private final int pingRefreshTimeMillis;
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private volatile double singleItemTransferTimeMillis;
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private volatile double latencyMillis;
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private final AtomicBoolean enablePacking = new AtomicBoolean(false);
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private final ConcurrentLinkedQueue<ExecutorService> executors = new ConcurrentLinkedQueue<>();
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private final AtomicBoolean closeRequested = new AtomicBoolean(false);
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private final ReentrantLock waitingAccesLock = new ReentrantLock();
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private final ConcurrentLinkedQueue<T> waitingPutItems = new ConcurrentLinkedQueue<>();
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private final AtomicDouble lostTimeMillis = new AtomicDouble(0d);
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private final AtomicDouble sentItems = new AtomicDouble(0);
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private final double startTimeMillis = ((double) System.nanoTime()) / 1000000d;
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public Batching(int pingRefreshTimeMillis) {
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this.pingRefreshTimeMillis = pingRefreshTimeMillis;
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refreshPing();
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if (enablePacking.get()) {
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ExecutorService executor = Executors.newFixedThreadPool(2);
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this.executors.offer(executor);
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executor.execute(this::pingRefreshExecutor);
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executor.execute(new BatchSender());
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}
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}
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private void pingRefreshExecutor() {
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boolean closeReq = false;
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while (!(closeReq = closeRequested.get())) {
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try {
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Thread.sleep(pingRefreshTimeMillis);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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refreshPing();
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}
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}
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private void refreshPing() {
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double pingTime = ping();
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this.latencyMillis = 0.9 * pingTime;
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this.singleItemTransferTimeMillis = 0.1 * pingTime;
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this.enablePacking.compareAndSet(false, latencyMillis > 0.1d);
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}
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public void offer(T action) {
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if (enablePacking.get()) {
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sentItems.addAndGet(1d);
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waitingAccesLock.lock();
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try {
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waitingPutItems.offer(action);
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} finally {
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waitingAccesLock.unlock();
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}
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} else {
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executeDirect(action);
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}
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}
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public void offer(Collection<T> actions) {
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if (enablePacking.get()) {
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sentItems.addAndGet(actions.size());
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waitingAccesLock.lock();
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try {
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for (T action : actions) {
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waitingPutItems.offer(action);
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}
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} finally {
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waitingAccesLock.unlock();
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}
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} else {
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executeDirect(actions);
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}
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}
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public void offer(T... actions) {
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offer(List.of(actions));
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}
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protected abstract void executeBatch(Collection<T> actions);
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protected void executeBatch(T action) {
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executeBatch(List.of(action));
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}
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protected abstract void executeDirect(T action);
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protected abstract void executeDirect(Collection<T> action);
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protected abstract double ping();
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public abstract void close();
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private static final double getItemSendLongestTime(double lostTime, double latencyMillis, double waitingSize,
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double singleItemTransferTimeMillis) {
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return lostTime + latencyMillis + waitingSize * singleItemTransferTimeMillis;
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}
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private static final double getItemSendLongestTimeNext(double lostTime, double latencyMillis, double waitTime,
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double waitingSize, double singleItemTransferTimeMillis, double itemsPerMillisecondIdeal) {
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return lostTime + latencyMillis + waitTime + (waitingSize
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+ (waitTime * itemsPerMillisecondIdeal) * singleItemTransferTimeMillis);
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}
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private static final double getItemsPerSecond(double waitingSize, double itemSendLongestTime) {
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return waitingSize / notZero(itemSendLongestTime);
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}
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private static final double getAverageItemTime(double waitingSize, double itemSendLongestTime) {
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return itemSendLongestTime / notZero(waitingSize);
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}
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private static final double getNextItemsPerSecond(double waitingSize, double nextItemSendLongestTime, double waitTime,
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double itemsPerMillisecondIdeal) {
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return (waitingSize + (waitTime * itemsPerMillisecondIdeal)) / notZero(nextItemSendLongestTime);
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}
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private static final double getNextAverageItemTime(double waitingSize, double nextItemSendLongestTime,
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double waitTime, double itemsPerMillisecondIdeal) {
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return nextItemSendLongestTime / notZero((waitingSize + (waitTime * itemsPerMillisecondIdeal)));
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}
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private static final double notZero(double input) {
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if (input != 0) {
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return input;
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} else {
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return input + 0.000000000000000000001d;
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}
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}
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private class BatchSender implements Runnable {
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@Override
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public void run() {
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boolean closeReq;
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while ((!(closeReq = closeRequested.get())) || !waitingPutItems.isEmpty()) {
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double waitTimeMillis = latencyMillis;
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long waitTimeNanoMillis = (long) Math.floor(latencyMillis);
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int waitTimeNanos = (int) ((waitTimeMillis - ((double) waitTimeNanoMillis)) * 1000000d);
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try {
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if (!closeReq) {
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Thread.sleep(waitTimeNanoMillis, waitTimeNanos);
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}
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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waitingAccesLock.lock();
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try {
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if (!waitingPutItems.isEmpty()) {
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int waitingSize = waitingPutItems.size();
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double lostTime = lostTimeMillis.addAndGet(waitTimeMillis); // Get the lost time as the time
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// in the middle
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double idealItemsPerMillis =
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sentItems.get() / notZero(((double) System.nanoTime()) / 1000000d - startTimeMillis);
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double idealMillisPerItem = 1d / notZero(idealItemsPerMillis);
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double itemSendLongestTime = getItemSendLongestTime(lostTime, latencyMillis, waitingSize,
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singleItemTransferTimeMillis);
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double itemsPerSecond = getItemsPerSecond(waitingSize, itemSendLongestTime);
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double averageItemTime = getAverageItemTime(waitingSize, itemSendLongestTime);
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double nextItemSendLongestTime = getItemSendLongestTimeNext(lostTime, latencyMillis, waitTimeMillis,
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waitingSize, singleItemTransferTimeMillis, idealItemsPerMillis);
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double nextItemsPerSecond = getNextItemsPerSecond(waitingSize, nextItemSendLongestTime, waitTimeMillis,
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idealItemsPerMillis);
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double nextAverageItemTime = getNextAverageItemTime(waitingSize, itemSendLongestTime, waitTimeMillis,
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idealItemsPerMillis);
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boolean do1 = idealMillisPerItem > latencyMillis;
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boolean do2 = itemsPerSecond > nextItemsPerSecond;
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boolean do3 = averageItemTime - nextAverageItemTime < latencyMillis;
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boolean do4 = averageItemTime > 5;
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boolean doThisTurn = do1 | do2 | do3 | do4 || closeReq;
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if (doThisTurn) {
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lostTimeMillis.set(0);
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if (waitingSize > 1) {
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executeBatch(waitingPutItems);
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} else {
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T pair = waitingPutItems.poll();
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executeBatch(pair);
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}
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if ((System.nanoTime() % 100) < 1) {
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System.out.printf("LATENCY=%.2f; WAITED=%.2f; PACKET_SIZE=%.2f; AVG_ITEM_TIME=%.2f; "
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+ "NEXT_AVG_ITEM_TIME=%.2f; DO=%s,%s,%s\n", latencyMillis, lostTime, (double) waitingSize,
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averageItemTime, nextAverageItemTime, "" + do1, "" + do2, "" + do3);
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System.out.printf("idealMillisPerItem=%.2f; itemsPerSecond=%.2f; nextItemsPerSecond=%"
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+ ".2f; averageItemTime-nextAverageItemTime=%.2f\n", idealItemsPerMillis, itemsPerSecond,
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nextItemsPerSecond, averageItemTime - nextAverageItemTime);
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}
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waitingPutItems.clear();
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} else {
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if ((System.nanoTime() % 100) < 1) {
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System.out.println("SKIPPED TURN");
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}
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}
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}
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} finally {
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waitingAccesLock.unlock();
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}
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}
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}
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}
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}
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@ -1,80 +0,0 @@
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package org.warp.commonutils.batch;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.List;
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import org.apache.commons.lang3.tuple.Pair;
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public abstract class KVSafeBatching<T, U> extends Batching<Pair<T, U>> {
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public KVSafeBatching(int pingRefreshTimeMillis) {
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super(pingRefreshTimeMillis);
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}
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@Deprecated
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@Override
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public void offer(Pair<T, U>... actions) {
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offer(List.of(actions));
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}
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@Deprecated
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@Override
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public void offer(Collection<Pair<T, U>> actions) {
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Object[] keys = new Object[actions.size()];
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Object[] values = new Object[actions.size()];
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int i = 0;
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for (Pair<T, U> action : actions) {
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keys[i] = action.getKey();
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values[i] = action.getValue();
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i++;
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}
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offer_(keys, values);
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}
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public void offer(T key, U value) {
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this.offer_(key, value);
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}
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public void offer(T[] keys, U[] values) {
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if (keys.length == 1 && values.length == 1) {
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this.offer_(keys[0], values[0]);
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} else {
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this.offer_(keys, values);
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}
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}
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private void offer_(T key, U value) {
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super.offer(Pair.of(key, value));
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}
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private void offer_(Object[] keys, Object[] values) {
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if (keys.length != values.length) {
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throw new IllegalArgumentException("Keys and values count must be the same.");
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}
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List<Pair<T, U>> pairs = new ArrayList<>(keys.length);
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for (int i = 0; i < keys.length; i++) {
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pairs.add(Pair.of((T) keys[i], (U) values[i]));
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}
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super.offer(pairs);
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}
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@Override
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protected void executeBatch(Collection<Pair<T, U>> actions) {
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}
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@Override
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protected void executeDirect(Pair<T, U> action) {
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}
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@Override
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protected void executeDirect(Collection<Pair<T, U>> action) {
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}
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@Override
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public void close() {
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}
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}
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@ -6,6 +6,7 @@ import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicReference;
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import java.util.function.BiConsumer;
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import java.util.function.Consumer;
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import org.warp.commonutils.concurrency.executor.BlockingOnFullQueueExecutorServiceDecorator;
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import org.warp.commonutils.concurrency.executor.BoundedExecutorService;
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import org.warp.commonutils.functional.TriConsumer;
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import org.warp.commonutils.type.IntWrapper;
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@ -29,31 +30,18 @@ public class ParallelUtils {
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IntWrapper count = new IntWrapper(CHUNK_SIZE);
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VariableWrapper<Object[]> values = new VariableWrapper<>(new Object[CHUNK_SIZE]);
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AtomicReference<CompletionException> firstExceptionReference = new AtomicReference<>(null);
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final Object arraysAccessLock = new Object();
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iterator.accept((value) -> {
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var firstException = firstExceptionReference.get();
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if (firstException != null) {
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throw firstException;
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}
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synchronized (arraysAccessLock) {
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var firstException = firstExceptionReference.get();
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if (firstException != null) {
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throw firstException;
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}
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values.var[CHUNK_SIZE - count.var] = value;
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count.var--;
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if (count.var == 0) {
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count.var = CHUNK_SIZE;
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Object[] valuesCopy = values.var;
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values.var = new Object[CHUNK_SIZE];
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try {
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parallelExecutor.execute(() -> {
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for (int i = 0; i < CHUNK_SIZE; i++) {
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try {
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//noinspection unchecked
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consumer.accept((V) valuesCopy[i]);
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} catch (Exception ex) {
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firstExceptionReference.compareAndSet(null, new CompletionException(ex));
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}
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}
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});
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} catch (RejectedExecutionException e) {
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throw new CompletionException(e);
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values.var[CHUNK_SIZE - count.var] = value;
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count.var--;
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if (count.var == 0) {
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sendChunkItems(values, CHUNK_SIZE, count, consumer, parallelExecutor, firstExceptionReference);
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}
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}
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});
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@ -63,6 +51,11 @@ public class ParallelUtils {
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} catch (InterruptedException e) {
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throw new RuntimeException("Parallel forEach interrupted", e);
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}
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synchronized (arraysAccessLock) {
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if (count.var > 0) {
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sendChunkItems(values, CHUNK_SIZE, count, consumer, null, firstExceptionReference);
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}
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}
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var firstException = firstExceptionReference.get();
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if (firstException != null) {
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@ -70,64 +63,124 @@ public class ParallelUtils {
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}
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}
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private static <V> void sendChunkItems(VariableWrapper<Object[]> values,
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int CHUNK_SIZE,
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IntWrapper count,
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Consumer<V> consumer,
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BlockingOnFullQueueExecutorServiceDecorator parallelExecutor,
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AtomicReference<CompletionException> firstExceptionReference) {
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var itemsCount = CHUNK_SIZE - count.var;
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count.var = CHUNK_SIZE;
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Object[] valuesCopy = values.var;
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values.var = new Object[itemsCount];
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try {
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Runnable action = () -> {
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for (int i = 0; i < itemsCount; i++) {
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try {
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//noinspection unchecked
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consumer.accept((V) valuesCopy[i]);
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} catch (Exception ex) {
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firstExceptionReference.compareAndSet(null, new CompletionException(ex));
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}
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}
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};
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if (parallelExecutor != null) {
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parallelExecutor.execute(action);
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} else {
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action.run();
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}
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} catch (RejectedExecutionException e) {
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throw new CompletionException(e);
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}
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}
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public static <K, V> void parallelize(Consumer<BiConsumer<K, V>> iterator,
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int maxQueueSize,
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int parallelism,
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int groupSize, BiConsumer<K, V> consumer) throws CompletionException {
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var parallelExecutor = BoundedExecutorService.create(maxQueueSize,
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parallelism,
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0,
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TimeUnit.MILLISECONDS,
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new ShortNamedThreadFactory("ForEachParallel"),
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(a, b) -> {}
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);
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final int CHUNK_SIZE = groupSize;
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IntWrapper count = new IntWrapper(CHUNK_SIZE);
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VariableWrapper<Object[]> keys = new VariableWrapper<>(new Object[CHUNK_SIZE]);
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VariableWrapper<Object[]> values = new VariableWrapper<>(new Object[CHUNK_SIZE]);
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AtomicReference<CompletionException> firstExceptionReference = new AtomicReference<>(null);
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iterator.accept((key, value) -> {
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if (parallelism <= 1) {
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iterator.accept(consumer);
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} else {
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var parallelExecutor = BoundedExecutorService.create(maxQueueSize,
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parallelism,
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0,
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TimeUnit.MILLISECONDS,
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new ShortNamedThreadFactory("ForEachParallel"),
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(a, b) -> {}
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);
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final int CHUNK_SIZE = groupSize;
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IntWrapper count = new IntWrapper(CHUNK_SIZE);
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VariableWrapper<Object[]> keys = new VariableWrapper<>(new Object[CHUNK_SIZE]);
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VariableWrapper<Object[]> values = new VariableWrapper<>(new Object[CHUNK_SIZE]);
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AtomicReference<CompletionException> firstExceptionReference = new AtomicReference<>(null);
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final Object arraysAccessLock = new Object();
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iterator.accept((key, value) -> {
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synchronized (arraysAccessLock) {
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var firstException = firstExceptionReference.get();
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if (firstException != null) {
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throw firstException;
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}
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keys.var[CHUNK_SIZE - count.var] = key;
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values.var[CHUNK_SIZE - count.var] = value;
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count.var--;
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if (count.var == 0) {
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sendChunkItems(keys, values, CHUNK_SIZE, count, consumer, parallelExecutor, firstExceptionReference);
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}
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}
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});
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parallelExecutor.shutdown();
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try {
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parallelExecutor.awaitTermination(Integer.MAX_VALUE, TimeUnit.DAYS);
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} catch (InterruptedException e) {
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throw new RuntimeException("Parallel forEach interrupted", e);
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}
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synchronized (arraysAccessLock) {
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if (count.var > 0) {
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sendChunkItems(keys, values, CHUNK_SIZE, count, consumer, null, firstExceptionReference);
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}
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}
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var firstException = firstExceptionReference.get();
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if (firstException != null) {
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throw firstException;
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}
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keys.var[CHUNK_SIZE - count.var] = key;
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values.var[CHUNK_SIZE - count.var] = value;
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count.var--;
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if (count.var == 0) {
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count.var = CHUNK_SIZE;
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Object[] keysCopy = keys.var;
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Object[] valuesCopy = values.var;
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keys.var = new Object[CHUNK_SIZE];
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values.var = new Object[CHUNK_SIZE];
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try {
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parallelExecutor.execute(() -> {
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for (int i = 0; i < CHUNK_SIZE; i++) {
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try {
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//noinspection unchecked
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consumer.accept((K) keysCopy[i], (V) valuesCopy[i]);
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} catch (Exception ex) {
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firstExceptionReference.compareAndSet(null, new CompletionException(ex));
|
||||
break;
|
||||
}
|
||||
}
|
||||
});
|
||||
} catch (RejectedExecutionException e) {
|
||||
throw new CompletionException(e);
|
||||
}
|
||||
}
|
||||
});
|
||||
parallelExecutor.shutdown();
|
||||
try {
|
||||
parallelExecutor.awaitTermination(Integer.MAX_VALUE, TimeUnit.DAYS);
|
||||
} catch (InterruptedException e) {
|
||||
throw new RuntimeException("Parallel forEach interrupted", e);
|
||||
}
|
||||
}
|
||||
|
||||
var firstException = firstExceptionReference.get();
|
||||
if (firstException != null) {
|
||||
throw firstException;
|
||||
private static <K, V> void sendChunkItems(VariableWrapper<Object[]> keys,
|
||||
VariableWrapper<Object[]> values,
|
||||
final int CHUNK_SIZE,
|
||||
IntWrapper count,
|
||||
BiConsumer<K, V> consumer,
|
||||
BlockingOnFullQueueExecutorServiceDecorator parallelExecutor,
|
||||
AtomicReference<CompletionException> firstExceptionReference) {
|
||||
int itemsCount = CHUNK_SIZE - count.var;
|
||||
count.var = CHUNK_SIZE;
|
||||
Object[] keysCopy = keys.var;
|
||||
Object[] valuesCopy = values.var;
|
||||
keys.var = new Object[itemsCount];
|
||||
values.var = new Object[itemsCount];
|
||||
try {
|
||||
Runnable action = () -> {
|
||||
for (int i = 0; i < itemsCount; i++) {
|
||||
try {
|
||||
//noinspection unchecked
|
||||
consumer.accept((K) keysCopy[i], (V) valuesCopy[i]);
|
||||
} catch (Exception ex) {
|
||||
firstExceptionReference.compareAndSet(null, new CompletionException(ex));
|
||||
break;
|
||||
}
|
||||
}
|
||||
};
|
||||
if (parallelExecutor != null) {
|
||||
parallelExecutor.execute(action);
|
||||
} else {
|
||||
action.run();
|
||||
}
|
||||
} catch (RejectedExecutionException e) {
|
||||
throw new CompletionException(e);
|
||||
}
|
||||
}
|
||||
|
||||
@ -149,37 +202,20 @@ public class ParallelUtils {
|
||||
VariableWrapper<Object[]> keys2 = new VariableWrapper<>(new Object[CHUNK_SIZE]);
|
||||
VariableWrapper<Object[]> values = new VariableWrapper<>(new Object[CHUNK_SIZE]);
|
||||
AtomicReference<CompletionException> firstExceptionReference = new AtomicReference<>(null);
|
||||
final Object arraysAccessLock = new Object();
|
||||
iterator.accept((key1, key2, value) -> {
|
||||
var firstException = firstExceptionReference.get();
|
||||
if (firstException != null) {
|
||||
throw firstException;
|
||||
}
|
||||
synchronized (arraysAccessLock) {
|
||||
var firstException = firstExceptionReference.get();
|
||||
if (firstException != null) {
|
||||
throw firstException;
|
||||
}
|
||||
|
||||
keys1.var[CHUNK_SIZE - count.var] = key1;
|
||||
keys2.var[CHUNK_SIZE - count.var] = key2;
|
||||
values.var[CHUNK_SIZE - count.var] = value;
|
||||
count.var--;
|
||||
if (count.var == 0) {
|
||||
count.var = CHUNK_SIZE;
|
||||
Object[] keys1Copy = keys1.var;
|
||||
Object[] keys2Copy = keys2.var;
|
||||
Object[] valuesCopy = values.var;
|
||||
keys1.var = new Object[CHUNK_SIZE];
|
||||
keys2.var = new Object[CHUNK_SIZE];
|
||||
values.var = new Object[CHUNK_SIZE];
|
||||
try {
|
||||
parallelExecutor.execute(() -> {
|
||||
for (int i = 0; i < CHUNK_SIZE; i++) {
|
||||
try {
|
||||
//noinspection unchecked
|
||||
consumer.accept((K1) keys1Copy[i], (K2) keys2Copy[i], (V) valuesCopy[i]);
|
||||
} catch (Exception ex) {
|
||||
firstExceptionReference.compareAndSet(null, new CompletionException(ex));
|
||||
}
|
||||
}
|
||||
});
|
||||
} catch (RejectedExecutionException e) {
|
||||
throw new CompletionException(e);
|
||||
keys1.var[CHUNK_SIZE - count.var] = key1;
|
||||
keys2.var[CHUNK_SIZE - count.var] = key2;
|
||||
values.var[CHUNK_SIZE - count.var] = value;
|
||||
count.var--;
|
||||
if (count.var == 0) {
|
||||
sendChunkItems(keys1, keys2, values, CHUNK_SIZE, count, consumer, parallelExecutor, firstExceptionReference);
|
||||
}
|
||||
}
|
||||
});
|
||||
@ -189,10 +225,52 @@ public class ParallelUtils {
|
||||
} catch (InterruptedException e) {
|
||||
throw new RuntimeException("Parallel forEach interrupted", e);
|
||||
}
|
||||
synchronized (arraysAccessLock) {
|
||||
if (count.var > 0) {
|
||||
sendChunkItems(keys1, keys2, values, CHUNK_SIZE, count, consumer, null, firstExceptionReference);
|
||||
}
|
||||
}
|
||||
|
||||
var firstException = firstExceptionReference.get();
|
||||
if (firstException != null) {
|
||||
throw firstException;
|
||||
}
|
||||
}
|
||||
|
||||
private static <K1, K2, V> void sendChunkItems(VariableWrapper<Object[]> keys1,
|
||||
VariableWrapper<Object[]> keys2,
|
||||
VariableWrapper<Object[]> values,
|
||||
int CHUNK_SIZE,
|
||||
IntWrapper count,
|
||||
TriConsumer<K1, K2, V> consumer,
|
||||
BlockingOnFullQueueExecutorServiceDecorator parallelExecutor,
|
||||
AtomicReference<CompletionException> firstExceptionReference) {
|
||||
int itemsCount = CHUNK_SIZE - count.var;
|
||||
count.var = CHUNK_SIZE;
|
||||
Object[] keys1Copy = keys1.var;
|
||||
Object[] keys2Copy = keys2.var;
|
||||
Object[] valuesCopy = values.var;
|
||||
keys1.var = new Object[itemsCount];
|
||||
keys2.var = new Object[itemsCount];
|
||||
values.var = new Object[itemsCount];
|
||||
try {
|
||||
Runnable action = () -> {
|
||||
for (int i = 0; i < itemsCount; i++) {
|
||||
try {
|
||||
//noinspection unchecked
|
||||
consumer.accept((K1) keys1Copy[i], (K2) keys2Copy[i], (V) valuesCopy[i]);
|
||||
} catch (Exception ex) {
|
||||
firstExceptionReference.compareAndSet(null, new CompletionException(ex));
|
||||
}
|
||||
}
|
||||
};
|
||||
if (parallelExecutor != null) {
|
||||
parallelExecutor.execute(action);
|
||||
} else {
|
||||
action.run();
|
||||
}
|
||||
} catch (RejectedExecutionException e) {
|
||||
throw new CompletionException(e);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user