/** Remove the complete queued object list. FIXME extract some method */
public LinkObject remove() {
LinkObject element;
boolean gotLock;
if (!enabled) {
if (log.isInfoEnabled()) log.info("FastQueue.remove: queue disabled, remove aborted");
return null;
}
gotLock = lock.lockRemove();
try {
if (!gotLock) {
if (enabled) {
if (log.isInfoEnabled())
log.info("FastQueue.remove: Remove aborted although queue enabled");
} else {
if (log.isInfoEnabled()) log.info("FastQueue.remove: queue disabled, remove aborted");
}
return null;
}
if (log.isTraceEnabled()) {
log.trace("FastQueue.remove: remove starting with size " + size);
}
if (checkLock) {
if (inRemove) log.warn("FastQueue.remove: Detected other remove");
inRemove = true;
if (inMutex) log.warn("FastQueue.remove: Detected other mutex in remove");
inMutex = true;
}
element = first;
first = last = null;
size = 0;
if (checkLock) {
if (!inMutex) log.warn("FastQueue.remove: Cancelled by other mutex in remove");
inMutex = false;
if (!inRemove) log.warn("FastQueue.remove: Cancelled by other remove");
inRemove = false;
}
if (log.isTraceEnabled()) {
log.trace("FastQueue.remove: remove ending with size " + size);
}
} finally {
lock.unlockRemove();
}
return element;
}
/** unlock queue for next remove */
public void unlockRemove() {
lock.unlockRemove();
}