1 files changed, 4 insertions, 0 deletions

diff --git a/trackerlogic.h b/trackerlogic.h
index ad6c911..7d0693a 100644
--- a/trackerlogic.h
+++ b/trackerlogic.h
@@ -6,6 +6,7 @@
 #ifndef OT_TRACKERLOGIC_H__
 #define OT_TRACKERLOGIC_H__
 
+#include <signal.h>
 #include <stdatomic.h>
 #include <stdint.h>
 #include <stdlib.h>
@@ -90,6 +91,9 @@ static inline ot_time time_future_seconds(int span) { return time_now_seconds()
 /* Cleared from the interrupt handler and read by every worker */
 extern _Atomic int    g_opentracker_running;
 
+/* Sent to a thread parked in a blocking read */
+#define OT_SIGNAL_WAKE SIGUSR1
+
 
 extern uint32_t g_tracker_id;
 typedef enum { FLAG_TCP, FLAG_UDP, FLAG_MCA, FLAG_SELFPIPE } PROTO_FLAG;