@Override
public void run() {
try {
while (true) {
this.selector.select(SELECT_MILLISECONDS);
if (Thread.interrupted()) break;
Iterator<SelectionKey> i = this.selector.selectedKeys().iterator();
while (i.hasNext()) {
SelectionKey key = i.next();
SelectableChannel channel = key.channel();
handleReadableChannel(key, channel);
handleWritableChannel(key, channel);
i.remove();
}
}
} catch (ClosedByInterruptException e) {
// User-requested interrupt, so clean up
} catch (IOException e) {
reportIOException(e);
}
for (Map.Entry<SelectableChannel, SelectableChannel> e : this.outputs.entrySet()) {
closeChannelAndReportException(e.getKey());
closeChannelAndReportException(e.getValue());
}
for (SelectableChannel c : this.outputBuffers.keySet()) closeChannelAndReportException(c);
}
/** {@inheritDoc} */
@Override
protected void body() throws InterruptedException, IgniteInterruptedCheckedException {
if (log.isDebugEnabled()) log.debug("GC worker started.");
File workTokDir = tokDir.getParentFile();
assert workTokDir != null;
boolean lastRunNeeded = true;
while (true) {
try {
// Sleep only if not cancelled.
if (lastRunNeeded) Thread.sleep(GC_FREQ);
} catch (InterruptedException ignored) {
// No-op.
}
if (log.isDebugEnabled()) log.debug("Starting GC iteration.");
cleanupResources(workTokDir);
// Process spaces created by this endpoint.
if (log.isDebugEnabled()) log.debug("Processing local spaces.");
for (IpcSharedMemoryClientEndpoint e : endpoints) {
if (log.isDebugEnabled()) log.debug("Processing endpoint: " + e);
if (!e.checkOtherPartyAlive()) {
endpoints.remove(e);
if (log.isDebugEnabled()) log.debug("Removed endpoint: " + e);
}
}
if (isCancelled()) {
if (lastRunNeeded) {
lastRunNeeded = false;
// Clear interrupted status.
Thread.interrupted();
} else {
Thread.currentThread().interrupt();
break;
}
}
}
}
/** {@inheritDoc} */
@Override
public void close() {
closed = true;
U.closeQuiet(srvSock);
if (gcWorker != null) {
U.cancel(gcWorker);
// This method may be called from already interrupted thread.
// Need to ensure cleaning on close.
boolean interrupted = Thread.interrupted();
try {
U.join(gcWorker);
} catch (IgniteInterruptedCheckedException e) {
U.warn(log, "Interrupted when stopping GC worker.", e);
} finally {
if (interrupted) Thread.currentThread().interrupt();
}
}
}
