#include <urcu/list.h>
#include <common/hashtable/hashtable.h>
+#include <common/trace-chunk.h>
+#include <common/optional.h>
+#include <common/buffer-view.h>
#include "session.h"
#include "stream-fd.h"
#include "tracefile-array.h"
-struct relay_stream_chunk_id {
- bool is_set;
- uint64_t value;
+struct lttcomm_relayd_index;
+
+struct relay_stream_rotation {
+ /*
+ * Indicates if the stream's data and index have been rotated. A
+ * rotation is considered completed when both rotations have occurred.
+ */
+ bool data_rotated;
+ bool index_rotated;
+ /*
+ * Sequence number of the first packet of the new trace chunk to which
+ * the stream is rotating.
+ */
+ uint64_t seq_num;
+ struct lttng_trace_chunk *next_trace_chunk;
};
/*
struct lttng_index_file *index_file;
char *path_name;
- /*
- * prev_path_name is only used for session rotation support.
- * It is essentially used to work around the fact that index
- * files are always created from the 'data' connection.
- *
- * Hence, it is possible to receive a ROTATE_STREAM command
- * which affects the stream's path_name before the creation of
- * an index file. In this situation, the index file of the
- * 'previous' chunk would be created in the new destination folder.
- *
- * It would then be unlinked when the actual index of the new chunk
- * is created.
- */
- char *prev_path_name;
char *channel_name;
/* On-disk circular buffer of tracefiles. */
uint64_t tracefile_size;
uint64_t tracefile_size_current;
+ /* Max number of trace files for this stream. */
uint64_t tracefile_count;
+ /*
+ * Index of the currently active file for this stream's on-disk
+ * ring buffer.
+ */
+ uint64_t tracefile_current_index;
+ /*
+ * Indicates that the on-disk buffer has wrapped around. Stream
+ * files shall be unlinked before being opened after this has occurred.
+ */
+ bool tracefile_wrapped_around;
/*
* Position in the tracefile where we have the full index also on disk.
bool data_pending_check_done;
/* Is this stream a metadata stream ? */
- int32_t is_metadata;
+ bool is_metadata;
/* Amount of metadata received (bytes). */
uint64_t metadata_received;
*/
bool in_recv_list;
struct cds_list_head recv_node;
- bool published; /* Protected by session lock. */
+ /* Protected by session lock. */
+ bool published;
/*
* Node of stream within global stream hash table.
*/
bool in_stream_ht; /* is stream in stream hash table. */
struct rcu_head rcu_node; /* For call_rcu teardown. */
/*
- * When we have written the data and index corresponding to this
- * seq_num, rotate the tracefile (session rotation). The path_name is
- * already up-to-date.
- * This is set to -1ULL when no rotation is pending.
- *
- * Always access with stream lock held.
+ * The trace chunk to which the file currently being produced (if any)
+ * belongs.
*/
- uint64_t rotate_at_seq_num;
- /*
- * This is the id of the chunk where we are writing to if no rotation is
- * pending (rotate_at_seq_num == -1ULL). If a rotation is pending, this
- * is the chunk_id we will have after the rotation. It must be updated
- * atomically with rotate_at_seq_num.
- *
- * Always access with stream lock held.
- *
- * This attribute is not set if the stream is created by a pre-2.11
- * consumer.
- */
- struct relay_stream_chunk_id current_chunk_id;
+ struct lttng_trace_chunk *trace_chunk;
+ LTTNG_OPTIONAL(struct relay_stream_rotation) ongoing_rotation;
};
struct relay_stream *stream_create(struct ctf_trace *trace,
uint64_t stream_handle, char *path_name,
char *channel_name, uint64_t tracefile_size,
- uint64_t tracefile_count, const struct relay_stream_chunk_id *chunk_id);
+ uint64_t tracefile_count);
struct relay_stream *stream_get_by_id(uint64_t stream_id);
bool stream_get(struct relay_stream *stream);
void stream_put(struct relay_stream *stream);
+int stream_rotate_output_files(struct relay_session *session,
+ struct relay_stream *stream);
+int stream_set_pending_rotation(struct relay_stream *stream,
+ struct lttng_trace_chunk *next_trace_chunk,
+ uint64_t rotation_sequence_number);
void try_stream_close(struct relay_stream *stream);
void stream_publish(struct relay_stream *stream);
+int stream_init_packet(struct relay_stream *stream, size_t packet_size,
+ bool *file_rotated);
+int stream_write(struct relay_stream *stream,
+ const struct lttng_buffer_view *packet, size_t padding_len);
+/* Called after the reception of a complete data packet. */
+int stream_update_index(struct relay_stream *stream, uint64_t net_seq_num,
+ bool rotate_index, bool *flushed, uint64_t total_size);
+int stream_complete_packet(struct relay_stream *stream,
+ size_t packet_total_size, uint64_t sequence_number,
+ bool index_flushed);
+/* Index info is in host endianness. */
+int stream_add_index(struct relay_stream *stream,
+ const struct lttcomm_relayd_index *index_info);
+int stream_reset_file(struct relay_stream *stream);
+
void print_relay_streams(void);
#endif /* _STREAM_H */