Examples of java.util.concurrent.locks.Lock.tryLock()

java.util.concurrent.locks.Lock.tryLock()
pulate protected state } finally { lock.unlock(); } } else { // perform alternative actions }} This usage ensures that the lock is unlocked if it was acquired, and doesn't try to unlock if the lock was not acquired. @return {@code true} if the lock was acquired and{@code false} otherwise


      try {
        byte []rightBuffer = rightBlock.getBuffer();


        Lock blockLock = block.getWriteLock();
        blockLock.tryLock(_timeout, TimeUnit.MILLISECONDS);


        try {
          Lock rightLock = rightBlock.getWriteLock();
          rightLock.tryLock(_timeout, TimeUnit.MILLISECONDS);

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        Lock blockLock = block.getWriteLock();
        blockLock.tryLock(_timeout, TimeUnit.MILLISECONDS);


        try {
          Lock rightLock = rightBlock.getWriteLock();
          rightLock.tryLock(_timeout, TimeUnit.MILLISECONDS);


          try {
            int rightLength = getLength(rightBuffer);


            if (_minN < rightLength) {

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  {
    Block block = readBlock(addressToBlockId(blockAddress));


    try {
      Lock lock = block.getWriteLock();
      lock.tryLock(_blockLockTimeout, TimeUnit.MILLISECONDS);


      try {
        byte []blockBuffer = block.getBuffer();


        writeLong(blockBuffer, offset, value);

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      try {
        byte []leftBuffer = leftBlock.getBuffer();


        Lock leftLock = leftBlock.getWriteLock();
        leftLock.tryLock(_timeout, TimeUnit.MILLISECONDS);


        try {
          int leftLength = getLength(leftBuffer);


          Lock blockLock = block.getWriteLock();

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        try {
          int leftLength = getLength(leftBuffer);


          Lock blockLock = block.getWriteLock();
          blockLock.tryLock(_timeout, TimeUnit.MILLISECONDS);


          try {
            int length = getLength(buffer);


            if (length + leftLength <= _n) {

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    Block block = readBlock(addressToBlockId(fragmentAddress));


    try {
      Lock lock = block.getReadLock();
      lock.tryLock(_blockLockTimeout, TimeUnit.MILLISECONDS);


      try {
        int blockOffset = getMiniFragmentOffset(fragmentAddress);


        byte []blockBuffer = block.getBuffer();

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      try {
        byte []rightBuffer = rightBlock.getBuffer();


        Lock blockLock = block.getWriteLock();
        blockLock.tryLock(_timeout, TimeUnit.MILLISECONDS);


        try {
          Lock rightLock = rightBlock.getWriteLock();
          rightLock.tryLock(_timeout, TimeUnit.MILLISECONDS);

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        Lock blockLock = block.getWriteLock();
        blockLock.tryLock(_timeout, TimeUnit.MILLISECONDS);


        try {
          Lock rightLock = rightBlock.getWriteLock();
          rightLock.tryLock(_timeout, TimeUnit.MILLISECONDS);


          try {
            int length = getLength(buffer);
            int rightLength = getLength(rightBuffer);

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    Block block = readBlock(addressToBlockId(fragmentAddress));


    try {
      Lock lock = block.getReadLock();
      lock.tryLock(_blockLockTimeout, TimeUnit.MILLISECONDS);


      try {
        int blockOffset = getMiniFragmentOffset(fragmentAddress);
        blockOffset += fragmentOffset;

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  {
    Block block = readBlock(addressToBlockId(fragmentAddress));


    try {
      Lock lock = block.getReadLock();
      lock.tryLock(_blockLockTimeout, TimeUnit.MILLISECONDS);


      try {
        int blockOffset = getMiniFragmentOffset(fragmentAddress);


        byte []blockBuffer = block.getBuffer();

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