| Methods Summary |
|---|
| public void | append(E value)
// Start the pointer at this node
LinkList<E> node = this;
node.lock.lock();
while (node.rest != null) {
LinkList<E> next = node.rest;
// Here's the hand-over-hand locking
try {
// Lock the next node
next.lock.lock();
} finally {
// unlock the current node
node.lock.unlock();
}
// Traverse
node = next;
}
// We're at the final node, so append and then unlock
try {
node.rest = new LinkList<E>(value);
// Let any waiting threads know that this node's link has changed
node.linkChanged.signalAll();
} finally {
node.lock.unlock();
}
|
| public void | executeOnValue(E desiredValue, java.lang.Runnable task)
lock.lock();
try {
// Checks the value against the desired value
while (!value.equals(desiredValue)) {
// This will wait until the value changes
valueChanged.await();
}
// When we get here, the value is correct -- Run the task
task.run();
} finally {
lock.unlock();
}
|
| public void | printUntilInterrupted(java.lang.String prefix)
// Start the pointer at this node
LinkList<E> node = this;
node.lock.lock();
while (true) {
LinkList<E> next;
try {
System.out.println(prefix + ": " + node.value);
// Wait for the next node if not available
while (node.rest == null) {
node.linkChanged.await();
}
// Get the next node
next = node.rest;
// Lock it - more hand-to-hand locking
next.lock.lock();
} catch (InterruptedException e) {
// reset the interrupt status
Thread.currentThread().interrupt();
return;
} finally {
node.lock.unlock();
}
// Traverse
node = next;
}
|
| public void | setValue(E value)
lock.lock();
try {
this.value = value;
// Let waiting threads that the value has changed
valueChanged.signalAll();
} finally {
lock.unlock();
}
|
