/** * Returns a string identifying this synchronizer, as well as its state. * The state, in brackets, includes the String {@code "State ="} * followed by the current value of {@link #getState}, and either * {@code "nonempty"} or {@code "empty"} depending on whether the * queue is empty. * * @return a string identifying this synchronizer, as well as its state */ public String toString() { int s = getState(); String q = hasQueuedThreads() ? "non" : ""; return super.toString() + "[State = " + s + ", " + q + "empty queue]"; }
/** * Invokes release with current state value; returns saved state. * Cancels node and throws exception on failure. * @param node the condition node for this wait * @return previous sync state */ final int fullyRelease(Node node) { boolean failed = true; try { int savedState = getState(); if (release(savedState)) { failed = false; return savedState; } else { throw new IllegalMonitorStateException(); } } finally { if (failed) node.waitStatus = Node.CANCELLED; } }
/** * Returns a string identifying this synchronizer, as well as its state. * The state, in brackets, includes the String {@code "State ="} * followed by the current value of {@link #getState}, and either * {@code "nonempty"} or {@code "empty"} depending on whether the * queue is empty. * * @return a string identifying this synchronizer, as well as its state */ public String toString() { int s = getState(); String q = hasQueuedThreads() ? "non" : ""; return super.toString() + "[State = " + s + ", " + q + "empty queue]"; }
/** * Returns a string identifying this synchronizer, as well as its state. * The state, in brackets, includes the String {@code "State ="} * followed by the current value of {@link #getState}, and either * {@code "nonempty"} or {@code "empty"} depending on whether the * queue is empty. * * @return a string identifying this synchronizer, as well as its state */ public String toString() { int s = getState(); String q = hasQueuedThreads() ? "non" : ""; return super.toString() + "[State = " + s + ", " + q + "empty queue]"; }
/** * Returns a string identifying this synchronizer, as well as its state. * The state, in brackets, includes the String {@code "State ="} * followed by the current value of {@link #getState}, and either * {@code "nonempty"} or {@code "empty"} depending on whether the * queue is empty. * * @return a string identifying this synchronizer, as well as its state */ public String toString() { int s = getState(); String q = hasQueuedThreads() ? "non" : ""; return super.toString() + "[State = " + s + ", " + q + "empty queue]"; }
/** * Returns a string identifying this synchronizer, as well as its state. * The state, in brackets, includes the String {@code "State ="} * followed by the current value of {@link #getState}, and either * {@code "nonempty"} or {@code "empty"} depending on whether the * queue is empty. * * @return a string identifying this synchronizer, as well as its state */ public String toString() { int s = getState(); String q = hasQueuedThreads() ? "non" : ""; return super.toString() + "[State = " + s + ", " + q + "empty queue]"; }
/** * Returns a string identifying this synchronizer, as well as its state. * The state, in brackets, includes the String {@code "State ="} * followed by the current value of {@link #getState}, and either * {@code "nonempty"} or {@code "empty"} depending on whether the * queue is empty. * * @return a string identifying this synchronizer, as well as its state */ public String toString() { int s = getState(); String q = hasQueuedThreads() ? "non" : ""; return super.toString() + "[State = " + s + ", " + q + "empty queue]"; }
/** * Returns a string identifying this synchronizer, as well as its state. * The state, in brackets, includes the String {@code "State ="} * followed by the current value of {@link #getState}, and either * {@code "nonempty"} or {@code "empty"} depending on whether the * queue is empty. * * @return a string identifying this synchronizer, as well as its state */ public String toString() { int s = getState(); String q = hasQueuedThreads() ? "non" : ""; return super.toString() + "[State = " + s + ", " + q + "empty queue]"; }
/** * Returns a string identifying this synchronizer, as well as its state. * The state, in brackets, includes the String {@code "State ="} * followed by the current value of {@link #getState}, and either * {@code "nonempty"} or {@code "empty"} depending on whether the * queue is empty. * * @return a string identifying this synchronizer, as well as its state */ public String toString() { int s = getState(); String q = hasQueuedThreads() ? "non" : ""; return super.toString() + "[State = " + s + ", " + q + "empty queue]"; }
/** * Returns a string identifying this synchronizer, as well as its state. * The state, in brackets, includes the String {@code "State ="} * followed by the current value of {@link #getState}, and either * {@code "nonempty"} or {@code "empty"} depending on whether the * queue is empty. * * @return a string identifying this synchronizer, as well as its state */ public String toString() { int s = getState(); String q = hasQueuedThreads() ? "non" : ""; return super.toString() + "[State = " + s + ", " + q + "empty queue]"; }
/** * Returns a string identifying this synchronizer, as well as its state. * The state, in brackets, includes the String {@code "State ="} * followed by the current value of {@link #getState}, and either * {@code "nonempty"} or {@code "empty"} depending on whether the * queue is empty. * * @return a string identifying this synchronizer, as well as its state */ public String toString() { int s= getState(); String q= hasQueuedThreads() ? "non" : ""; return super.toString() + "[State = " + s + ", " + q + "empty queue]"; }
/** * Returns a string identifying this synchronizer, as well as its state. * The state, in brackets, includes the String {@code "State ="} * followed by the current value of {@link #getState}, and either * {@code "nonempty"} or {@code "empty"} depending on whether the * queue is empty. * * @return a string identifying this synchronizer, as well as its state */ public String toString() { int s = getState(); String q = hasQueuedThreads() ? "non" : ""; return super.toString() + "[State = " + s + ", " + q + "empty queue]"; }
/** * Invokes release with current state value; returns saved state. * Cancels node and throws exception on failure. * @param node the condition node for this wait * @return previous sync state */ final int fullyRelease(Node node) { boolean failed = true; try { int savedState = getState(); if (release(savedState)) { failed = false; return savedState; } else { throw new IllegalMonitorStateException(); } } finally { if (failed) node.waitStatus = Node.CANCELLED; } }
/** * Invokes release with current state value; returns saved state. * Cancels node and throws exception on failure. * @param node the condition node for this wait * @return previous sync state */ final int fullyRelease(Node node) { boolean failed = true; try { int savedState = getState(); if (release(savedState)) { failed = false; return savedState; } else { throw new IllegalMonitorStateException(); } } finally { if (failed) node.waitStatus = Node.CANCELLED; } }
/** * Invokes release with current state value; returns saved state. * Cancels node and throws exception on failure. * @param node the condition node for this wait * @return previous sync state */ final int fullyRelease(Node node) { boolean failed = true; try { int savedState = getState(); if (release(savedState)) { failed = false; return savedState; } else { throw new IllegalMonitorStateException(); } } finally { if (failed) node.waitStatus = Node.CANCELLED; } }
/** * Invokes release with current state value; returns saved state. * Cancels node and throws exception on failure. * @param node the condition node for this wait * @return previous sync state */ final int fullyRelease(Node node) { boolean failed = true; try { int savedState = getState(); if (release(savedState)) { failed = false; return savedState; } else { throw new IllegalMonitorStateException(); } } finally { if (failed) node.waitStatus = Node.CANCELLED; } }
/** * Invokes release with current state value; returns saved state. * Cancels node and throws exception on failure. * @param node the condition node for this wait * @return previous sync state */ final int fullyRelease(Node node) { boolean failed = true; try { int savedState = getState(); if (release(savedState)) { failed = false; return savedState; } else { throw new IllegalMonitorStateException(); } } finally { if (failed) node.waitStatus = Node.CANCELLED; } }
/** * Invokes release with current state value; returns saved state. * Cancels node and throws exception on failure. * @param node the condition node for this wait * @return previous sync state */ final int fullyRelease(Node node) { boolean failed = true; try { int savedState = getState(); if (release(savedState)) { failed = false; return savedState; } else { throw new IllegalMonitorStateException(); } } finally { if (failed) node.waitStatus = Node.CANCELLED; } }
class BooleanLatch { private static class Sync extends AbstractQueuedSynchronizer { boolean isSignalled() { return getState() != 0; } protected int tryAcquireShared(int ignore) { return isSignalled()? 1 : -1; } protected boolean tryReleaseShared(int ignore) { setState(1); return true; } } private final Sync sync = new Sync(); public boolean isSignalled() { return sync.isSignalled(); } public void signal() { sync.releaseShared(1); } public void await() throws InterruptedException { sync.acquireSharedInterruptibly(1); } }