X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=libringbuffer%2Ffrontend_types.h;h=d0890408eb9bfa4965fda6f1326d00693530a6d8;hb=6c737d0594cac0d969e1948ea1ed55c15be9cec8;hp=bf4b4185e2368945494dd39e3df86efed5ff1aa8;hpb=a9ff648cc4cc06d28b522d705c467d45ab916a9d;p=lttng-ust.git

diff --git a/libringbuffer/frontend_types.h b/libringbuffer/frontend_types.h
index bf4b4185..d0890408 100644
--- a/libringbuffer/frontend_types.h
+++ b/libringbuffer/frontend_types.h
@@ -70,7 +70,13 @@ struct channel {
 	size_t priv_data_offset;
 	unsigned int nr_streams;		/* Number of streams */
 	struct lttng_ust_shm_handle *handle;
-	char padding[RB_CHANNEL_PADDING];
+	/* Extended options. */
+	union {
+		struct {
+			int32_t blocking_timeout_ms;
+		} s;
+		char padding[RB_CHANNEL_PADDING];
+	} u;
 	/*
 	 * Associated backend contains a variable-length array. Needs to
 	 * be last member.
@@ -196,6 +202,20 @@ struct lttng_ust_lib_ring_buffer {
 
 	DECLARE_SHMP(struct commit_counters_cold, commit_cold);
 					/* Commit count per sub-buffer */
+	DECLARE_SHMP(uint64_t, ts_end);	/*
+					 * timestamp_end per sub-buffer.
+					 * Time is sampled by the
+					 * switch_*_end() callbacks
+					 * which are the last space
+					 * reservation performed in the
+					 * sub-buffer before it can be
+					 * fully committed and
+					 * delivered. This time value is
+					 * then read by the deliver
+					 * callback, performed by the
+					 * last commit before the buffer
+					 * becomes readable.
+					 */
 	long active_readers;		/*
 					 * Active readers count
 					 * standard atomic access (shared)