Introduce vtracef

[lttng-ust.git] / include / lttng / tracef.h

diff --git a/include/lttng/tracef.h b/include/lttng/tracef.h
index 0c59c9ae17c6b4b1cc80a8c93fb01e4bb4e29f0b..854ccdce52b48c20f7098b49af8cb20ebc4cb5e9 100644 (file)
--- a/include/lttng/tracef.h
+++ b/include/lttng/tracef.h
@@ -32,6 +32,9 @@ extern "C" {
 extern
 void _lttng_ust_tracef(const char *fmt, ...);
 
+extern
+void _lttng_ust_vtracef(const char *fmt, va_list ap);
+
 #define tracef(fmt, ...)                                               \
        do {                                                            \
                LTTNG_STAP_PROBEV(tracepoint_lttng_ust_tracef, event, ## __VA_ARGS__); \
@@ -39,6 +42,11 @@ void _lttng_ust_tracef(const char *fmt, ...);
                        _lttng_ust_tracef(fmt, ## __VA_ARGS__);         \
        } while (0)
 
+#define vtracef(fmt, ap)                                               \
+       do {                                                            \
+               if (caa_unlikely(__tracepoint_lttng_ust_tracef___event.state)) \
+                       _lttng_ust_vtracef(fmt, ap);            \
+       } while (0)
 #ifdef __cplusplus
 }
 #endif