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-rw-r--r--libs/ardour/ardour/graph.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/libs/ardour/ardour/graph.h b/libs/ardour/ardour/graph.h
index a6863fc86b..ec906455fe 100644
--- a/libs/ardour/ardour/graph.h
+++ b/libs/ardour/ardour/graph.h
@@ -109,7 +109,8 @@ class Graph : public SessionHandleRef
bool _graph_empty;
// chain swapping
- pthread_mutex_t _swap_mutex;
+ Glib::Mutex _swap_mutex;
+ Glib::Cond _cleanup_cond;
volatile int _current_chain;
volatile int _pending_chain;
volatile int _setup_chain;