Move to kernel style SPDX license identifiers

[lttng-ust.git] / include / lttng / tracepoint-event.h

diff --git a/include/lttng/tracepoint-event.h b/include/lttng/tracepoint-event.h
index 2cbe4475226be98ac917c1adb27d11ec88e5e326..938184552f928cafe3311259754825799692feda 100644 (file)
--- a/include/lttng/tracepoint-event.h
+++ b/include/lttng/tracepoint-event.h
@@ -1,45 +1,76 @@
 /*
- * Copyright (c) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * SPDX-License-Identifier: MIT
  *
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
- *
- * Permission is hereby granted to use or copy this program
- * for any purpose,  provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
+ * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  */
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #ifdef TRACEPOINT_CREATE_PROBES
 
 #define __tp_stringify1(x)     #x
 #define __tp_stringify(x)      __tp_stringify1(x)
 
 #undef TRACEPOINT_EVENT_INSTANCE
-#define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args)  \
-       _DEFINE_TRACEPOINT(provider, name)
+#define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args)
 
 #undef TRACEPOINT_EVENT
 #define TRACEPOINT_EVENT(_provider, _name, _args, _fields)             \
-       TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, _TP_PARAMS(_args))
+       TRACEPOINT_EVENT_CLASS(_provider, _name, _TP_PARAMS(_args),     \
+                       _TP_PARAMS(_fields))                            \
+       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 */