Github user SolidWallOfCode commented on a diff in the pull request:
https://github.com/apache/trafficserver/pull/245#discussion_r34371196
--- Diff: iocore/hostdb/HostDB.cc ---
@@ -1801,6 +1828,39 @@ HostDBContinuation::do_put_response(ClusterMachine
*m, HostDBInfo *r, Continuati
clusterProcessor.invoke_remote(m->pop_ClusterHandler(),
PUT_HOSTINFO_CLUSTER_FUNCTION, (char *)&msg, len);
}
+int
+HostDBContinuation::probeAllEvent(int event, Event *e)
+{
+ Debug("hostdb", "probeAllEvent event=%d eventp=%p", event, e);
+ ink_assert(!link.prev && !link.next);
+ EThread *t = e ? e->ethread : this_ethread();
+
+ MUTEX_TRY_LOCK_FOR(lock, action.mutex, t, action.continuation);
+ if (!lock.is_locked()) {
+ mutex->thread_holding->schedule_in(this, HOST_DB_RETRY_PERIOD);
+ return EVENT_CONT;
+ }
+
+ if (action.cancelled) {
+ hostdb_cont_free(this);
+ return EVENT_DONE;
+ }
+
+ for (int i = 0; i < hostDB.buckets; ++i) {
+ ProxyMutex *bucket_mutex = hostDB.lock_for_bucket(i);
+ SCOPED_MUTEX_LOCK(lock, bucket_mutex, t);
+ for (unsigned int l = 0; l < hostDB.levels; ++l) {
+ HostDBInfo *r = reinterpret_cast<HostDBInfo*>(hostDB.data +
hostDB.level_offset[l] + hostDB.bucketsize[l] * i);
+ if (!r->deleted && !r->failed()) {
+ action.continuation->handleEvent(EVENT_INTERVAL,
static_cast<void*>(r));
+ }
+ }
+ }
+
--- End diff --
Can you considered doing 1 or some small finite number of buckets per
event? Otherwise you're blocking a thread for potentially a long time.
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