X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=include%2Flttng%2Fust-ctl.h;h=d9eba3ef3bffac24928f8e233c9baa76fb68dd2a;hb=fd46f5c79a6a7178e35ce4f8ea21caa30da45cc4;hp=f6c1dc4527c4d64a4318a54375d3e5ee70c94e99;hpb=f45930b75b297a5f80fe14ef2550b196ca750b4a;p=lttng-ust.git

diff --git a/include/lttng/ust-ctl.h b/include/lttng/ust-ctl.h
index f6c1dc45..d9eba3ef 100644
--- a/include/lttng/ust-ctl.h
+++ b/include/lttng/ust-ctl.h
@@ -23,6 +23,14 @@
 #include <sys/types.h>
 #include <limits.h>
 
+#ifndef LTTNG_PACKED
+#error "LTTNG_PACKED should be defined"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifndef LTTNG_UST_UUID_LEN
 #define LTTNG_UST_UUID_LEN	16
 #endif
@@ -53,6 +61,7 @@ struct ustctl_consumer_channel_attr {
 	enum lttng_ust_output output;		/* splice, mmap */
 	uint32_t chan_id;			/* channel ID */
 	unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
+	int64_t blocking_timeout;			/* Blocking timeout (usec) */
 } LTTNG_PACKED;
 
 /*
@@ -237,8 +246,15 @@ int ustctl_put_subbuf(struct ustctl_consumer_stream *stream);
 
 void ustctl_flush_buffer(struct ustctl_consumer_stream *stream,
 		int producer_active);
+void ustctl_clear_buffer(struct ustctl_consumer_stream *stream);
 
 /* index */
+
+/*
+ * Getters which need to be used on the current packet (between get/put
+ * or get_next/put_next.
+ */
+
 int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream,
 		uint64_t *timestamp_begin);
 int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream,
@@ -249,15 +265,26 @@ int ustctl_get_content_size(struct ustctl_consumer_stream *stream,
 	uint64_t *content_size);
 int ustctl_get_packet_size(struct ustctl_consumer_stream *stream,
 	uint64_t *packet_size);
-int ustctl_get_stream_id(struct ustctl_consumer_stream *stream,
-		uint64_t *stream_id);
-int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream,
-		uint64_t *ts);
 int ustctl_get_sequence_number(struct ustctl_consumer_stream *stream,
 		uint64_t *seq);
+
+/*
+ * Getter returning state invariant for the stream, which can be used
+ * without "get" operation.
+ */
+
+int ustctl_get_stream_id(struct ustctl_consumer_stream *stream,
+		uint64_t *stream_id);
 int ustctl_get_instance_id(struct ustctl_consumer_stream *stream,
 		uint64_t *id);
 
+/*
+ * Getter returning the current timestamp as perceived from the
+ * tracer.
+ */
+int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream,
+		uint64_t *ts);
+
 /* returns whether UST has perf counters support. */
 int ustctl_has_perf_counters(void);
 
@@ -495,4 +522,8 @@ int ustctl_reply_register_channel(int sock,
 	enum ustctl_channel_header header_type,
 	int ret_code);			/* return code. 0 ok, negative error */
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _LTTNG_UST_CTL_H */