/* pause, delete, active depending on fd state */
LTTNG_CONSUMER_UPDATE_STREAM,
/* inform the consumer to quit when all fd has hang up */
- LTTNG_CONSUMER_STOP,
+ LTTNG_CONSUMER_STOP, /* deprecated */
LTTNG_CONSUMER_ADD_RELAYD_SOCKET,
/* Inform the consumer to kill a specific relayd connection */
LTTNG_CONSUMER_DESTROY_RELAYD,
*/
int index_fd;
+ /*
+ * Local pipe to extract data when using splice.
+ */
+ int splice_pipe[2];
+
/*
* Rendez-vous point between data and metadata stream in live mode.
*/
pthread_cond_t metadata_rdv;
pthread_mutex_t metadata_rdv_lock;
+
+ /* Indicate if the stream still has some data to be read. */
+ unsigned int has_data:1;
};
/*
/* socket to exchange commands with sessiond */
char *consumer_command_sock_path;
/* communication with splice */
- int consumer_thread_pipe[2];
int consumer_channel_pipe[2];
- int consumer_splice_metadata_pipe[2];
/* Data stream poll thread pipe. To transfer data stream to the thread */
struct lttng_pipe *consumer_data_pipe;
+
+ /*
+ * Data thread use that pipe to catch wakeup from read subbuffer that
+ * detects that there is still data to be read for the stream encountered.
+ * Before doing so, the stream is flagged to indicate that there is still
+ * data to be read.
+ *
+ * Both pipes (read/write) are owned and used inside the data thread.
+ */
+ struct lttng_pipe *consumer_wakeup_pipe;
+ /* Indicate if the wakeup thread has been notified. */
+ unsigned int has_wakeup:1;
+
/* to let the signal handler wake up the fd receiver thread */
int consumer_should_quit[2];
/* Metadata poll thread pipe. Transfer metadata stream to it */