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-rw-r--r--erts/emulator/beam/sys.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h
index 8b3eb2db1d..748fba15c7 100644
--- a/erts/emulator/beam/sys.h
+++ b/erts/emulator/beam/sys.h
@@ -644,6 +644,15 @@ typedef struct preload {
unsigned char* code; /* Code pointer */
} Preload;
+/*
+ * ErtsTracer is either NIL, 'true' or [Mod | State]
+ *
+ * If set to NIL, it means no tracer.
+ * If set to 'true' it means the current process' tracer.
+ * If set to [Mod | State], there is a tracer.
+ * See erts_tracer_update for more details
+ */
+typedef Eterm ErtsTracer;
/*
* This structure contains options to all built in drivers.