Java Jvm.pause方法代码示例

import net.openhft.chronicle.core.Jvm; //导入方法依赖的package包/类
/**
 * Delays, via Thread.sleep, for the given millisecond delay, but
 * if the sleep is shorter than specified, may re-sleep or yield
 * until time elapses.
 */
static void delay(long millis) throws InterruptedException {
    long startTime = System.nanoTime();
    long ns = millis * 1000 * 1000;
    for (; ; ) {
        if (millis > 0L)
            Jvm.pause(millis);
        else // too short to sleep
            Thread.yield();
        long d = ns - (System.nanoTime() - startTime);
        if (d > 0L)
            millis = d / (1000 * 1000);
        else
            break;
    }
}
 

import net.openhft.chronicle.core.Jvm; //导入方法依赖的package包/类
public <R> R check(Call instance) {
    R r1 = null;
    R r2 = null;
    for (int i = 0; i < 50; i++) {
        r1 = (R) instance.method(map1);
        r2 = (R) instance.method(map2);

        if (r1 != null && r1.equals(r2))
            return r1;

        if (i > 30) {
                Jvm.pause(i);
        } else {
            Thread.yield();
        }
    }

    Assert.assertEquals(map1, map2);
    System.out.print(map1);
    System.out.print(map2);

    if (r1 != null)
        Assert.assertEquals(r1.toString(), r2.toString());

    return (R) r1;
}
 

import net.openhft.chronicle.core.Jvm; //导入方法依赖的package包/类
public static void waitTillEqual(Map map1, Map map2, int timeOutMs) {
        int numberOfTimesTheSame = 0;
        long startTime = System.currentTimeMillis();
        for (int t = 0; t < timeOutMs + 100; t++) {
            // not map1.equals(map2), the reason is described above
            if (map1.equals(map2)) {
                numberOfTimesTheSame++;
                Jvm.pause(1);
                if (numberOfTimesTheSame == 10) {
                    System.out.println("same");
                    break;
                }
}
            Jvm.pause(1);
            if (System.currentTimeMillis() - startTime > timeOutMs)
                break;
        }
    }
 

import net.openhft.chronicle.core.Jvm; //导入方法依赖的package包/类
public static void main(String[] args) {
    String input = args.length > 0 ? args[0] : OS.TMP + "/input";
    String output = args.length > 1 ? args[1] : OS.TMP + "/output";

    AtomicLong lastUpdate = new AtomicLong(System.currentTimeMillis() + 1000);
    Thread thread = new Thread(() -> {
        ChronicleQueue outputQ = SingleChronicleQueueBuilder.binary(output).build();
        MethodReader reader = outputQ.createTailer().methodReader((HelloReplier) err::println);
        while (!Thread.interrupted()) {
            if (reader.readOne()) {
                lastUpdate.set(System.currentTimeMillis());
            } else {
                Jvm.pause(10);
            }
        }
    });
    thread.setDaemon(true);
    thread.start();

    ChronicleQueue inputQ = SingleChronicleQueueBuilder.binary(input).build();
    HelloWorld helloWorld = inputQ.createAppender().methodWriter(HelloWorld.class);

    Scanner scanner = new Scanner(System.in);
    while (true) {
        while (System.currentTimeMillis() < lastUpdate.get() + 30)
            Thread.yield();

        out.print("Chat ");
        out.flush();
        if (!scanner.hasNextLine())
            break;
        String line = scanner.nextLine();
        helloWorld.hello(line);
        lastUpdate.set(System.currentTimeMillis());
    }
    out.print("Bye");
}
 

import net.openhft.chronicle.core.Jvm; //导入方法依赖的package包/类
public static void main(String[] args) {
    String path = "queue";
    SingleChronicleQueue queue = SingleChronicleQueueBuilder.binary(path).build();
    ExcerptTailer tailer = queue.createTailer();

    while (true) {
        String text = tailer.readText();
        if (text == null)
            Jvm.pause(10);
        else
            System.out.println(text);

    }
}
 

import net.openhft.chronicle.core.Jvm; //导入方法依赖的package包/类
@Override
public void run() {
    while (running && !Thread.currentThread().isInterrupted()) {
        Jvm.pause(1);
        long delay = System.nanoTime() - sample;
        if (delay > 1000 * 1000) {
            System.out.println("\n" + (System.currentTimeMillis() - START_TIME) + " : Delay of " + delay / 100000 / 10.0 + " ms.");
            int count = 0;
            for (StackTraceElement ste : thread.getStackTrace()) {
                System.out.println("\tat " + ste);
                if (count++ > 6) break;
            }
        }
    }
}
 

import net.openhft.chronicle.core.Jvm; //导入方法依赖的package包/类
/**
 * * waits until map1 and map2 show the same value
 *
 * @param timeOutMs timeout in milliseconds
 */
private void waitTillEqual(final int timeOutMs) {
    int t = 0;
    for (; t < timeOutMs; t++) {
        if (map1.equals(map2))
            break;
            Jvm.pause(1);
    }
}
 

import net.openhft.chronicle.core.Jvm; //导入方法依赖的package包/类
/**
	 * {@inheritDoc}
	 * @see java.lang.Runnable#run()
	 */
	@Override
	public void run() {
		final ExcerptTailer tailer = queue.createTailer();
		final ByteBufMarshallable smm = new ByteBufMarshallable(compression); 
		startLatch.countDown();
		while(keepRunning.get()) {			
			try {
				long processed = 0L;
				long reads = 0L;
				int listenerProcessed = 0;
				final long startTime = System.currentTimeMillis();
				while(tailer.readBytes(smm)) {
					chronicleReads.inc();
					reads++;
					final ByteBuf sm = smm.getAndNullByteBuf();
					log.debug("MessageQueue Read Buffer, size: {} bytes", sm.readableBytes());
					if(sm!=null) {
						listenerProcessed += listener.onMetric(sm);
//						sm.release();
						processed++;
						if(processed==stopCheckCount) {
							processed = 0;
							if(!keepRunning.get()) break;
						}
					}
				}
				if(reads==0) {
					Jvm.pause(idlePauseTime);
				} else {
					final long elapsedTime = System.currentTimeMillis() - startTime;
					log.info("Processed [{}] in [{}] ms.", listenerProcessed, elapsedTime);
				}			
				reads = 0;
			} catch (Exception ex) {
				if(ex instanceof InterruptedException) {
					if(keepRunning.get()) {
						if(Thread.interrupted()) Thread.interrupted();
					}
					log.info("Reader Thread [{}] shutting down", Thread.currentThread());
				} else {
					log.warn("Unexpected exception in reader thread",  ex);
				}
			}
		}
	}
 

import net.openhft.chronicle.core.Jvm; //导入方法依赖的package包/类
public static void main(String[] args) throws IOException, InterruptedException {
    ProcessInstanceLimiter.limitTo(2);
    Jvm.pause(60L * 1000L);
}