// the QHostInfoLookupManager will at some point call this via a QThreadPool
void QHostInfoRunnable::run()
{
QHostInfoLookupManager *manager = theHostInfoLookupManager();
// check aborted
if (manager->wasAborted(id)) {
manager->lookupFinished(this);
return;
}
// check cache
// FIXME
// if not in cache: OS lookup
QHostInfo hostInfo = QHostInfoAgent::fromName(toBeLookedUp);
// save to cache
// FIXME
// check aborted again
if (manager->wasAborted(id)) {
manager->lookupFinished(this);
return;
}
// signal emission
hostInfo.setLookupId(id);
resultEmitter.emitResultsReady(hostInfo);
manager->lookupFinished(this);
// thread goes back to QThreadPool
}
// the QHostInfoLookupManager will at some point call this via a QThreadPool
void QHostInfoRunnable::run()
{
QHostInfoLookupManager *manager = theHostInfoLookupManager();
// check aborted
if (manager->wasAborted(id)) {
manager->lookupFinished(this);
return;
}
QHostInfo hostInfo;
// QHostInfo::lookupHost already checks the cache. However we need to check
// it here too because it might have been cache saved by another QHostInfoRunnable
// in the meanwhile while this QHostInfoRunnable was scheduled but not running
if (manager->cache.isEnabled()) {
// check the cache first
bool valid = false;
hostInfo = manager->cache.get(toBeLookedUp, &valid);
if (!valid) {
// not in cache, we need to do the lookup and store the result in the cache
hostInfo = QHostInfoAgent::fromName(toBeLookedUp);
manager->cache.put(toBeLookedUp, hostInfo);
}
} else {
// cache is not enabled, just do the lookup and continue
hostInfo = QHostInfoAgent::fromName(toBeLookedUp);
}
// check aborted again
if (manager->wasAborted(id)) {
manager->lookupFinished(this);
return;
}
// signal emission
hostInfo.setLookupId(id);
resultEmitter.emitResultsReady(hostInfo);
// now also iterate through the postponed ones
{
QMutexLocker locker(&manager->mutex);
QMutableListIterator<QHostInfoRunnable*> iterator(manager->postponedLookups);
while (iterator.hasNext()) {
QHostInfoRunnable* postponed = iterator.next();
if (toBeLookedUp == postponed->toBeLookedUp) {
// we can now emit
iterator.remove();
hostInfo.setLookupId(postponed->id);
postponed->resultEmitter.emitResultsReady(hostInfo);
delete postponed;
}
}
}
manager->lookupFinished(this);
// thread goes back to QThreadPool
}