public void acquireMutex() throws IllegalAcornStateException {
try {
while(!mutex.tryAcquire(3, TimeUnit.SECONDS)) {
- System.err.println("Mutex is taking a long time to acquire - owner is " + mutexOwner);
+ LOGGER.info("Mutex is taking a long time to acquire - owner is " + mutexOwner);
}
if(VERIFY)
mutexOwner = Thread.currentThread();
public void shutdown() {
if (GraphClientImpl2.DEBUG)
- System.err.println("Shutting down LRU writers " + writers);
+ LOGGER.info("Shutting down LRU writers " + writers);
writers.shutdown();
try {
writers.awaitTermination(60, TimeUnit.SECONDS);
}
});
if (GraphClientImpl2.DEBUG)
- System.err.println("Resuming LRU writers " + writers);
+ LOGGER.info("Resuming LRU writers " + writers);
}
/*
boolean gotMutex = impl.tryAcquireMutex();
boolean done = false;
+ int count = 0;
+ long startTime = 0;
while (!done) {
if (gotMutex || borrowMutex) {
runWithMutex();
done = true;
} else {
- LOGGER.warn("Retry mutex acquire");
+ if (count % 10 == 0) {
+ // Taking too long, sleep for a while.
+ LOGGER.warn("Retry mutex acquire");
+ try {
+ Thread.sleep(10);
+ } catch (InterruptedException e) {
+ }
+ }
gotMutex = impl.tryAcquireMutex();
+ long currentTime = System.currentTimeMillis();
+ if ((currentTime - startTime) > 10) {
+ startTime = currentTime;
+ count++;
+ }
}
}