Fix: C++: incomplete extern C guard transition

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

diff --git a/include/lttng/tracepoint-event.h b/include/lttng/tracepoint-event.h
index 176e7f3fdd4aff46ea4b5eeea000bfdad413771d..c1ca31c85e11a64d0f5b0b5080e08282a06cec58 100644 (file)
--- a/include/lttng/tracepoint-event.h
+++ b/include/lttng/tracepoint-event.h
@@ -1,28 +1,32 @@
 /*
  * Copyright (c) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
  *
- * 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.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
  */
 
-#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)             \
@@ -31,18 +35,32 @@ 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 */
-
-#ifdef __cplusplus
-}
-#endif