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authorDavid Robillard <d@drobilla.net>2010-11-26 00:59:54 +0000
committerDavid Robillard <d@drobilla.net>2010-11-26 00:59:54 +0000
commitdf81cce780f5844a6f904ec76330ec08fe8bc329 (patch)
treea05d38c532adef93f1e5c7658ff59cad63cad51d /src/engine
parentd60f8a0fba5dfc10cafadf13a6debed8ba832f24 (diff)
downloadingen-df81cce780f5844a6f904ec76330ec08fe8bc329.tar.gz
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Fix race crash processing event list (Raul::ListImpl seriously needs an audit and heavy testing...)
git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@2673 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/engine')
-rw-r--r--src/engine/EventSource.cpp16
1 files changed, 11 insertions, 5 deletions
diff --git a/src/engine/EventSource.cpp b/src/engine/EventSource.cpp
index 27397a8f..ebc12052 100644
--- a/src/engine/EventSource.cpp
+++ b/src/engine/EventSource.cpp
@@ -76,21 +76,27 @@ EventSource::process(PostProcessor& dest, ProcessContext& context, bool limit)
size_t num_events_processed = 0;
- QueuedEvent* ev = (QueuedEvent*)_events.front();
- Raul::List<Event*>::Node* new_head = _events.head();
+ Raul::List<Event*>::Node* head = _events.head();
+ Raul::List<Event*>::Node* tail = head;
+
+ if (!head)
+ return;
+
+ QueuedEvent* ev = (QueuedEvent*)head->elem();
while (ev && ev->is_prepared() && ev->time() < context.end()) {
ev->execute(context);
- new_head = new_head->next();
+ tail = head;
+ head = head->next();
++num_events_processed;
if (limit && num_events_processed > MAX_QUEUED_EVENTS)
break;
- ev = (new_head ? (QueuedEvent*)new_head->elem() : NULL);
+ ev = (head ? (QueuedEvent*)head->elem() : NULL);
}
if (num_events_processed > 0) {
Raul::List<Event*> front;
- _events.chop_front(front, num_events_processed, new_head);
+ _events.chop_front(front, num_events_processed, tail);
dest.append(&front);
}
}