X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Ftracepoint-event.h;h=a12b758b2db9ca75cd14fedb3398d422d6950952;hb=a6e092cc2d7eed95dfbec5bef7d23eea9ee30baf;hp=d36a9bafc3b470888b29f7e9010638f893f6f853;hpb=d2428e875af8666473fb689429eaf1022862510d;p=lttng-ust.git

diff --git a/include/lttng/tracepoint-event.h b/include/lttng/tracepoint-event.h
index d36a9baf..a12b758b 100644
--- a/include/lttng/tracepoint-event.h
+++ b/include/lttng/tracepoint-event.h
@@ -20,10 +20,6 @@
  * SOFTWARE.
  */
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #ifdef TRACEPOINT_CREATE_PROBES
 
 #define __tp_stringify1(x)	#x
@@ -39,21 +35,58 @@ extern "C" {
 	TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name,		\
 			_TP_PARAMS(_args))
 
-#define TRACEPOINT_INCLUDE	__tp_stringify(TRACEPOINT_INCLUDE_FILE)
 
 #undef TRACEPOINT_CREATE_PROBES
 
 #define TRACEPOINT_HEADER_MULTI_READ
+
+/*
+ * LTTng-UST 2.0 expects TRACEPOINT_INCLUDE_FILE, but this approach has
+ * the unwanted side-effect of expanding any macro name found within
+ * TRACEPOINT_INCLUDE_FILE.
+ *
+ * Starting from LTTng-UST 2.1, we expect the TRACEPOINT_INCLUDE to be
+ * defined by probes as a string. We still check for
+ * TRACEPOINT_INCLUDE_FILE for API backward compatibility.
+ */
+#ifdef TRACEPOINT_INCLUDE_FILE
+#define TRACEPOINT_INCLUDE	__tp_stringify(TRACEPOINT_INCLUDE_FILE)
+#endif
+
 #include TRACEPOINT_INCLUDE
 
 #include <lttng/ust-tracepoint-event.h>
 
 #undef TRACEPOINT_HEADER_MULTI_READ
+#undef TRACEPOINT_INCLUDE_FILE
+#undef TRACEPOINT_INCLUDE
 
 #define TRACEPOINT_CREATE_PROBES
 
-#endif /* TRACEPOINT_CREATE_PROBES */
+/*
+ * Put back definitions to the state they were when defined by
+ * tracepoint.h.
+ */
+#undef TP_ARGS
+#define TP_ARGS(...)       __VA_ARGS__
 
-#ifdef __cplusplus
-}
-#endif
+#undef TRACEPOINT_EVENT
+#define TRACEPOINT_EVENT(provider, name, args, fields)			\
+	_DECLARE_TRACEPOINT(provider, name, _TP_PARAMS(args))		\
+	_DEFINE_TRACEPOINT(provider, name, _TP_PARAMS(args))
+
+#undef TRACEPOINT_EVENT_CLASS
+#define TRACEPOINT_EVENT_CLASS(provider, name, args, fields)
+
+#undef TRACEPOINT_EVENT_INSTANCE
+#define TRACEPOINT_EVENT_INSTANCE(provider, _template, name, args)	\
+	_DECLARE_TRACEPOINT(provider, name, _TP_PARAMS(args))		\
+	_DEFINE_TRACEPOINT(provider, name, _TP_PARAMS(args))
+
+#undef TRACEPOINT_LOGLEVEL
+#define TRACEPOINT_LOGLEVEL(provider, name, loglevel)
+
+#undef TRACEPOINT_MODEL_EMF_URI
+#define TRACEPOINT_MODEL_EMF_URI(provider, name, uri)
+
+#endif /* TRACEPOINT_CREATE_PROBES */