Example usage for java.lang Thread yield

Introduction

In this page you can find the example usage for java.lang Thread yield.

Prototype

public static native void yield();

Source Link

Document

A hint to the scheduler that the current thread is willing to yield its current use of a processor.

Usage

From source file:Main.java

public static void copy(InputStream in, File dst) throws IOException {
    OutputStream out = new FileOutputStream(dst);

    // Transfer bytes from in to out
    byte[] buf = buffers.get();
    int len;//from   ww  w .j  av a2s.c  o m
    while ((len = in.read(buf)) > 0) {
        Thread.yield();
        out.write(buf, 0, len);
    }
    out.close();
}

From source file:Main.java

/**
 * Certain types of queues will fail to {@link java.util.Queue#offer(Object)} an item due to many factors
 * depending on the type of queue. <code>offerUntilSuccess</code> will not return until the item has been
 * successfully queued onto the desired queue
 * @param entry item to queue//  ww  w  . j  a  v  a  2s  .  c o  m
 * @param queue queue to add the entry to
 * @param <T>
 */
public static <T> void offerUntilSuccess(T entry, Queue<T> queue) {
    boolean success;
    do {
        success = queue.offer(entry);
        Thread.yield();
    } while (!success);
}

From source file:ThreadDemo.java

public void run() {
    try {/*from  w w  w  .j a v a  2 s .  com*/
        Thread.sleep(1000);
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    System.out.println(Thread.currentThread().getName() + "yielding control...");
    Thread.yield();

    System.out.println(Thread.currentThread().getName() + " has finished executing.");
}

From source file:Main.java

/**
 * Method to add a random delay or if none to yield to give any waiting
 * threads a chance. This helps make test threaded code more random to track
 * synchronized issues./*from   ww  w  .  j  a  v a 2s  .  c om*/
 *
 * @param millis
 *            up to the many ms
 * @return actual sleep time
 */
public static final int sleepUpTo(final long millis) {
    try {
        if (millis > 0) {
            int realSleep = (int) Math.floor(Math.random() * (millis + 1));
            if (realSleep > 0) {
                Thread.sleep(realSleep);
                return realSleep;
            } else {
                // Give any waiting threads a go
                Thread.yield();
                return 0;
            }
        }
    } catch (final InterruptedException e) {
        // It's not an error that we were Interrupted!! Don't log the
        // exception !
        return -1;
    }
    return 0;
}

From source file:FlagComm.java

public void run() {
    for (int i = 0; i < 5; i++) {
        while (isValid) {
            Thread.yield();
        }/*from   w  ww .  j  a va  2 s. c  o  m*/
        theValue = (int) (Math.random() * 256);
        System.out.println("sending " + theValue);
        isValid = true;
    }
}

From source file:Main.java

/**
 * Compute the square root of x to a given scale, x >= 0. Use Newton's
 * algorithm.//from w  w w .jav  a 2  s.  c  o m
 * 
 * @param x
 *            the value of x
 * @return the result value
 */
public static BigDecimal sqrt(BigDecimal x) {
    // Check that x >= 0.
    if (x.signum() < 0) {
        throw new ArithmeticException("x < 0");
    }

    // n = x*(10^(2*SCALE))
    BigInteger n = x.movePointRight(SCALE << 1).toBigInteger();

    // The first approximation is the upper half of n.
    int bits = (n.bitLength() + 1) >> 1;
    BigInteger ix = n.shiftRight(bits);
    BigInteger ixPrev;

    // Loop until the approximations converge
    // (two successive approximations are equal after rounding).
    do {
        ixPrev = ix;

        // x = (x + n/x)/2
        ix = ix.add(n.divide(ix)).shiftRight(1);

        Thread.yield();
    } while (ix.compareTo(ixPrev) != 0);

    return new BigDecimal(ix, SCALE);
}

From source file:PriorityCompete.java

private void runWork() {
    Thread.yield();

    while (noStopRequested) {
        if (yield) {
            Thread.yield();/*from   w  ww .ja v  a  2  s .c  o m*/
        }

        count++;

        for (int i = 0; i < 1000; i++) {
            double x = i * Math.PI / Math.E;
        }
    }
}

From source file:Main.java

/**
 * Compute x^exponent to a given scale. Uses the same algorithm as class
 * numbercruncher.mathutils.IntPower.//from   w w  w. j  a  va  2s . c  o m
 * 
 * @param x
 *            the value x
 * @param exponent
 *            the exponent value
 * @param scale
 *            the desired scale of the result
 * @return the result value
 */
public static BigDecimal intPower(BigDecimal x, long exponent, int scale) {
    // If the exponent is negative, compute 1/(x^-exponent).
    if (exponent < 0) {
        return BigDecimal.valueOf(1).divide(intPower(x, -exponent, scale), scale, BigDecimal.ROUND_HALF_EVEN);
    }

    BigDecimal power = BigDecimal.valueOf(1);

    // Loop to compute value^exponent.
    while (exponent > 0) {

        // Is the rightmost bit a 1?
        if ((exponent & 1) == 1) {
            power = power.multiply(x).setScale(scale, BigDecimal.ROUND_HALF_EVEN);
        }

        // Square x and shift exponent 1 bit to the right.
        x = x.multiply(x).setScale(scale, BigDecimal.ROUND_HALF_EVEN);
        exponent >>= 1;

        Thread.yield();
    }

    return power;
}

From source file:FlagComm.java

public void run() {
    while (true) {
        while (!theSender.isValid) {
            Thread.yield();
        }//  ww w.  java2 s.c  o m
        System.out.println("received " + theSender.theValue);
        theSender.isValid = false;
    }
}

From source file:org.acdd.ext.bundleInfo.maker.ApkPreProcess.java

public static void preProcess(String mDir) {
    Collection<File> apkFiles = org.apache.commons.io.FileUtils.listFiles(new File(mDir),
            new String[] { "apk" }, true);

    for (File file : apkFiles) {
        String pkgName = PackageLite.parse(file.getAbsolutePath()).packageName;

        pkgName = "lib" + pkgName.replaceAll("\\.", "_") + ".so";
        File targetFile = new File(mDir + File.separator + pkgName);
        if (targetFile.exists())
            targetFile.delete();/*from ww  w. j  a  v a 2  s. c  o m*/

        System.out.println("rename: " + file.getName() + " -> " + pkgName);
        while (!file.renameTo(targetFile)) {
            System.gc();
            Thread.yield();
        }
        System.out.println("ApkPreProcess.preProcess() processed " + pkgName);
    }
}