Fix: combined tracing of lttng-ust 2.12/2.13 generates corrupted traces

[lttng-ust.git] / src / common / events.h

diff --git a/src/common/events.h b/src/common/events.h
index 338573a9947373bbce5ef07b7d0ff4e639155273..760628283eac06d0d531f636eefd037da917d538 100644 (file)
--- a/src/common/events.h
+++ b/src/common/events.h
@@ -18,6 +18,13 @@
 #include "common/macros.h"
 #include "common/ust-context-provider.h"
 
+/*
+ * The context procname length is part of the LTTng-UST ABI.
+ * TODO: At the next breaking protocol bump, all users of this macro
+ * should instead use LTTNG_UST_ABI_PROCNAME_LEN.
+ */
+#define LTTNG_UST_CONTEXT_PROCNAME_LEN 17
+
 struct lttng_ust_abi_obj;
 struct lttng_event_notifier_group;