X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=include%2Flttng%2Flttng.h;h=4171cde41c998d123fac3b407a337ec622b42cfe;hp=a9aee7233e7307735982c951b937ed5c2012d38e;hb=806e2684ce24d3772af37ee46c5f0500c7a0723f;hpb=5168918c35a95e9d955fa4efb6533aaafe05b2e5

diff --git a/include/lttng/lttng.h b/include/lttng/lttng.h
index a9aee7233..4171cde41 100644
--- a/include/lttng/lttng.h
+++ b/include/lttng/lttng.h
@@ -261,6 +261,7 @@ struct lttng_event_field {
 	enum lttng_event_field_type type;
 	char padding[LTTNG_EVENT_FIELD_PADDING];
 	struct lttng_event event;
+	int nowrite;
 };
 
 /*
@@ -580,6 +581,16 @@ extern int lttng_disable_consumer(struct lttng_handle *handle);
  */
 extern int lttng_health_check(enum lttng_health_component c);
 
+/*
+ * For a given session name, this call checks if the data is ready to be read
+ * or is still being extracted by the consumer(s) hence not ready to be used by
+ * any readers.
+ *
+ * Return 0 if the data is _NOT_ available else 1 if the data is ready. On
+ * error, a negative value is returned and readable by lttng_strerror().
+ */
+extern int lttng_data_available(const char *session_name);
+
 #ifdef __cplusplus
 }
 #endif