org.apache.juli.logging.ch.qos.logback.core.util.InterruptUtil Maven / Gradle / Ivy
package org.apache.juli.logging.ch.qos.logback.core.util;
import org.apache.juli.logging.ch.qos.logback.core.Context;
import org.apache.juli.logging.ch.qos.logback.core.spi.ContextAwareBase;
/**
* Allows masking of interrupt flag if previously the flag is already set. Does
* nothing otherwise.
*
* Typical use:
*
*
* InterruptUtil interruptUtil = new InterruptUtil(context);
*
* try {
* interruptUtil.maskInterruptFlag();
* someOtherThread.join(delay);
* } catch (InterruptedException e) {
* // reachable only if join does not succeed within delay.
* // Without the maskInterruptFlag() call, the join() would have returned
* // immediately
* // had the current thread been interrupted previously, i.e. before entering
* // the above block
* } finally {
* interruptUtil.unmaskInterruptFlag();
* }
*
*
* @author Ceki Gulcu
* @since 1.2.2
*/
public class InterruptUtil extends ContextAwareBase {
final boolean previouslyInterrupted;
public InterruptUtil(Context context) {
super();
setContext(context);
previouslyInterrupted = Thread.currentThread().isInterrupted();
}
public void maskInterruptFlag() {
if (previouslyInterrupted) {
Thread.interrupted();
}
}
public void unmaskInterruptFlag() {
if (previouslyInterrupted) {
try {
Thread.currentThread().interrupt();
} catch (SecurityException se) {
addError("Failed to interrupt current thread", se);
}
}
}
}