#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
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;
}
&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)
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,
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();