Examples of EDU.oswego.cs.dl.util.concurrent.ReadWriteLock

Package EDU.oswego.cs.dl.util.concurrent

Examples of EDU.oswego.cs.dl.util.concurrent.ReadWriteLock

EDU.oswego.cs.dl.util.concurrent.ReadWriteLock
public void read() throws InterruptedException { rw.readLock().acquire(); try { // ... do the read } finally { rw.readlock().release() } } public void write() throws InterruptedException { rw.writeLock().acquire(); try { // ... do the write } finally { rw.writelock().release() } } } @see Sync
[ Introduction to this package. ]

public class ReadWriteLockTest extends TestCase {
    Sync rl, wl;


    protected void setUp() throws Exception {
        super.setUp();
        ReadWriteLock l=new ReentrantWriterPreferenceReadWriteLock();
        rl=l.readLock();
        wl=l.writeLock();
    }

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    /**
     * store the content in a file
     */
    protected void store(File file, byte[] content) {
        ReadWriteLock lock;
        synchronized (this.locks) {
            lock = (ReadWriteLock) this.locks.get(file.getAbsolutePath());
            if ( lock == null ) {
                lock = new FIFOReadWriteLock();
                this.locks.put(file.getAbsolutePath(), lock);
            }
        }
        Sync sync = lock.writeLock();
        try {
            sync.acquire();
            try {
                OutputStream os = new FileOutputStream(file);
                os.write(content);

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    /**
     * Get the content from a file
     */
    protected byte[] get(File file) {
        ReadWriteLock lock;
        synchronized (this.locks) {
            lock = (ReadWriteLock) this.locks.get(file.getAbsolutePath());
            if ( lock == null ) {
                lock = new FIFOReadWriteLock();
                this.locks.put(file.getAbsolutePath(), lock);
            }
        }
        Sync sync = lock.readLock();
        try {
            sync.acquire();
            try {
                String content = IOUtils.deserializeString(file);
                return content.getBytes();

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    private final ReadWriteLock getReadWriteLock(IPerson person)
    {
        Object key = new Integer(person.getID());


        ReadWriteLock lock = (ReadWriteLock) mLocks.get(key);


        if (null == lock)
        {
            lock = new ReentrantWriterPreferenceReadWriteLock();

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    /**
     * store the content in a file
     */
    protected void store(File file, byte[] content) {
        ReadWriteLock lock;
        synchronized (this.locks) {
            lock = (ReadWriteLock) this.locks.get(file.getAbsolutePath());
            if ( lock == null ) {
                lock = new FIFOReadWriteLock();
                this.locks.put(file.getAbsolutePath(), lock);
            }
        }
        Sync sync = lock.writeLock();
        try {
            sync.acquire();
            try {
                OutputStream os = new FileOutputStream(file);
                os.write(content);

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    /**
     * Get the content from a file
     */
    protected byte[] get(File file) {
        ReadWriteLock lock;
        synchronized (this.locks) {
            lock = (ReadWriteLock) this.locks.get(file.getAbsolutePath());
            if ( lock == null ) {
                lock = new FIFOReadWriteLock();
                this.locks.put(file.getAbsolutePath(), lock);
            }
        }
        Sync sync = lock.readLock();
        try {
            sync.acquire();
            try {
                String content = IOUtils.deserializeString(file);
                return content.getBytes();

View Full Code Here


    /**
     * store the content in a file
     */
    protected void store(File file, byte[] content) {
        ReadWriteLock lock;
        synchronized (this.locks) {
            lock = (ReadWriteLock) this.locks.get(file.getAbsolutePath());
            if ( lock == null ) {
                lock = new FIFOReadWriteLock();
                this.locks.put(file.getAbsolutePath(), lock);
            }
        }
        Sync sync = lock.writeLock();
        try {
            sync.acquire();
            try {
                OutputStream os = new FileOutputStream(file);
                os.write(content);

View Full Code Here

    
    /**
     * Get the content from a file
     */
    protected byte[] get(File file) {
        ReadWriteLock lock;
        synchronized (this.locks) {
            lock = (ReadWriteLock) this.locks.get(file.getAbsolutePath());
            if ( lock == null ) {
                lock = new FIFOReadWriteLock();
                this.locks.put(file.getAbsolutePath(), lock);
            }
        }
        Sync sync = lock.readLock();
        try {
            sync.acquire();
            try {
                String content = IOUtils.deserializeString(file);
                return content.getBytes();

View Full Code Here

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