X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=liblttng-ust-ctl%2Fustctl.c;h=949ece17ace8a2d8ec2a2d624b0451fd5ee83313;hb=beca55a1aa4ff272188d7c37c19eb0540f811c8b;hp=2af791473f6bbdf5ee816064a49514d2db61756b;hpb=c62a3816777e0b9567498e9924acd2ca587da41a;p=lttng-ust.git

diff --git a/liblttng-ust-ctl/ustctl.c b/liblttng-ust-ctl/ustctl.c
index 2af79147..949ece17 100644
--- a/liblttng-ust-ctl/ustctl.c
+++ b/liblttng-ust-ctl/ustctl.c
@@ -34,6 +34,7 @@
 #include "../liblttng-ust/wait.h"
 #include "../liblttng-ust/lttng-rb-clients.h"
 #include "../liblttng-ust/clock.h"
+#include "../liblttng-ust/getenv.h"
 
 /*
  * Number of milliseconds to retry before failing metadata writes on
@@ -1056,7 +1057,8 @@ struct ustctl_consumer_channel *
 			attr->switch_timer_interval,
 			attr->read_timer_interval,
 			attr->uuid, attr->chan_id,
-			stream_fds, nr_stream_fds);
+			stream_fds, nr_stream_fds,
+			attr->blocking_timeout);
 	if (!chan->chan) {
 		goto chan_error;
 	}
@@ -1500,6 +1502,25 @@ int ustctl_snapshot(struct ustctl_consumer_stream *stream)
 			&buf->prod_snapshot, consumer_chan->chan->handle);
 }
 
+/*
+ * Get a snapshot of the current ring buffer producer and consumer positions
+ * even if the consumed and produced positions are contained within the same
+ * subbuffer.
+ */
+int ustctl_snapshot_sample_positions(struct ustctl_consumer_stream *stream)
+{
+	struct lttng_ust_lib_ring_buffer *buf;
+	struct ustctl_consumer_channel *consumer_chan;
+
+	if (!stream)
+		return -EINVAL;
+	buf = stream->buf;
+	consumer_chan = stream->chan;
+	return lib_ring_buffer_snapshot_sample_positions(buf,
+			&buf->cons_snapshot, &buf->prod_snapshot,
+			consumer_chan->chan->handle);
+}
+
 /* Get the consumer position (iteration start) */
 int ustctl_snapshot_get_consumed(struct ustctl_consumer_stream *stream,
 		unsigned long *pos)
@@ -1569,6 +1590,19 @@ void ustctl_flush_buffer(struct ustctl_consumer_stream *stream,
 		consumer_chan->chan->handle);
 }
 
+void ustctl_clear_buffer(struct ustctl_consumer_stream *stream)
+{
+	struct lttng_ust_lib_ring_buffer *buf;
+	struct ustctl_consumer_channel *consumer_chan;
+
+	assert(stream);
+	buf = stream->buf;
+	consumer_chan = stream->chan;
+	lib_ring_buffer_switch_slow(buf, SWITCH_ACTIVE,
+		consumer_chan->chan->handle);
+	lib_ring_buffer_clear_reader(buf, consumer_chan->chan->handle);
+}
+
 static
 struct lttng_ust_client_lib_ring_buffer_client_cb *get_client_cb(
 		struct lttng_ust_lib_ring_buffer *buf,
@@ -2205,6 +2239,7 @@ static __attribute__((constructor))
 void ustctl_init(void)
 {
 	init_usterr();
+	lttng_ust_getenv_init();	/* Needs init_usterr() to be completed. */
 	lttng_ust_clock_init();
 	lttng_ring_buffer_metadata_client_init();
 	lttng_ring_buffer_client_overwrite_init();