X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fconsumer.h;h=4ac823c017d03754ed545a9a1288df707b84778f;hp=2bf572303c94d7ce63b839eb820f00d04116de9f;hb=02b3d1769d5f8a33e4109b1e681141c9295dfda6;hpb=d3e2ba59faddb31870e2ce29b6a881f7ad5ad883

diff --git a/src/common/consumer.h b/src/common/consumer.h
index 2bf572303..4ac823c01 100644
--- a/src/common/consumer.h
+++ b/src/common/consumer.h
@@ -32,7 +32,7 @@
 #include <common/compat/uuid.h>
 #include <common/sessiond-comm/sessiond-comm.h>
 #include <common/pipe.h>
-#include <common/index/lttng-index.h>
+#include <common/index/ctf-index.h>
 
 /* Commands for consumer */
 enum lttng_consumer_command {
@@ -41,7 +41,7 @@ enum lttng_consumer_command {
 	/* 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,
@@ -57,6 +57,7 @@ enum lttng_consumer_command {
 	LTTNG_CONSUMER_FLUSH_CHANNEL,
 	LTTNG_CONSUMER_SNAPSHOT_CHANNEL,
 	LTTNG_CONSUMER_SNAPSHOT_METADATA,
+	LTTNG_CONSUMER_STREAMS_SENT,
 };
 
 /* State of each fd in consumer */
@@ -334,6 +335,15 @@ struct lttng_consumer_stream {
 	 * FD of the index file for this stream.
 	 */
 	int index_fd;
+
+	/*
+	 * 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;
 };
 
 /*
@@ -446,6 +456,19 @@ struct lttng_consumer_local_data {
 	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 */
@@ -505,7 +528,7 @@ struct lttng_consumer_global_data {
 /*
  * Init consumer data structures.
  */
-void lttng_consumer_init(void);
+int lttng_consumer_init(void);
 
 /*
  * Set the error socket for communication with a session daemon.
@@ -587,6 +610,7 @@ struct consumer_relayd_sock_pair *consumer_allocate_relayd_sock_pair(
 		uint64_t net_seq_idx);
 struct consumer_relayd_sock_pair *consumer_find_relayd(uint64_t key);
 int consumer_send_relayd_stream(struct lttng_consumer_stream *stream, char *path);
+int consumer_send_relayd_streams_sent(uint64_t net_seq_idx);
 void close_relayd_stream(struct lttng_consumer_stream *stream);
 struct lttng_consumer_channel *consumer_find_channel(uint64_t key);
 int consumer_handle_stream_before_relayd(struct lttng_consumer_stream *stream,
@@ -605,15 +629,17 @@ ssize_t lttng_consumer_on_read_subbuffer_mmap(
 		struct lttng_consumer_local_data *ctx,
 		struct lttng_consumer_stream *stream, unsigned long len,
 		unsigned long padding,
-		struct lttng_packet_index *index);
+		struct ctf_packet_index *index);
 ssize_t lttng_consumer_on_read_subbuffer_splice(
 		struct lttng_consumer_local_data *ctx,
 		struct lttng_consumer_stream *stream, unsigned long len,
 		unsigned long padding,
-		struct lttng_packet_index *index);
+		struct ctf_packet_index *index);
 int lttng_consumer_take_snapshot(struct lttng_consumer_stream *stream);
 int lttng_consumer_get_produced_snapshot(struct lttng_consumer_stream *stream,
 		unsigned long *pos);
+int lttng_ustconsumer_get_wakeup_fd(struct lttng_consumer_stream *stream);
+int lttng_ustconsumer_close_wakeup_fd(struct lttng_consumer_stream *stream);
 void *consumer_thread_metadata_poll(void *data);
 void *consumer_thread_data_poll(void *data);
 void *consumer_thread_sessiond_poll(void *data);