X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-relayd%2Fstream.h;fp=src%2Fbin%2Flttng-relayd%2Fstream.h;h=0000000000000000000000000000000000000000;hp=c64b180451f6d1d05a97e87757d8fb73bb627634;hb=c9e313bc594f40a86eed237dce222c0fc99c957f;hpb=4878de5c7deb512bbdac4fdfc498907efa06fb7c diff --git a/src/bin/lttng-relayd/stream.h b/src/bin/lttng-relayd/stream.h deleted file mode 100644 index c64b18045..000000000 --- a/src/bin/lttng-relayd/stream.h +++ /dev/null @@ -1,220 +0,0 @@ -#ifndef _STREAM_H -#define _STREAM_H - -/* - * Copyright (C) 2013 Julien Desfossez - * Copyright (C) 2013 David Goulet - * Copyright (C) 2015 Mathieu Desnoyers - * - * SPDX-License-Identifier: GPL-2.0-only - * - */ - -#include -#include -#include -#include - -#include -#include -#include -#include - -#include "session.h" -#include "tracefile-array.h" - -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; - /* - * Packet sequence number of the first packet of the new trace chunk to - * which the stream is rotating. - */ - uint64_t packet_seq_num; - /* - * Monotonically increasing previous network sequence number of first - * data packet of the new trace chunk to which the stream is rotating. - */ - uint64_t prev_data_net_seq; - struct lttng_trace_chunk *next_trace_chunk; -}; - -/* - * Represents a stream in the relay - */ -struct relay_stream { - uint64_t stream_handle; - - struct urcu_ref ref; - /* Back reference to trace. Protected by refcount on trace object. */ - struct ctf_trace *trace; - - /* - * To protect from concurrent read/update. The viewer stream - * lock nests inside the stream lock. The stream lock nests - * inside the ctf_trace lock. - */ - pthread_mutex_t lock; - /* previous data sequence number written to disk. */ - uint64_t prev_data_seq; - /* previous index sequence number written to disk. */ - uint64_t prev_index_seq; - /* seq num to encounter before closing. */ - uint64_t last_net_seq_num; - - struct fs_handle *file; - /* index file on which to write the index data. */ - struct lttng_index_file *index_file; - - char *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. - */ - uint64_t pos_after_last_complete_data_index; - - /* - * Counts the number of received indexes. The "tag" associated - * with an index is taken before incrementing this seqcount. - * Therefore, the sequence tag associated with the last index - * received is always index_received_seqcount - 1. - */ - uint64_t index_received_seqcount; - - /* - * Packet sequence number of the last received packet index. - * Only populated when interacting with CTF_INDEX 1.1+. - */ - LTTNG_OPTIONAL(uint64_t) received_packet_seq_num; - - /* - * Tracefile array is an index of the stream trace files, - * indexed by position. It allows keeping track of the oldest - * available indexes when overwriting trace files in tracefile - * rotation. - */ - struct tracefile_array *tfa; - - bool closed; /* Stream is closed. */ - bool close_requested; /* Close command has been received. */ - - /* - * Counts number of indexes in indexes_ht. Redundant info. - * Protected by stream lock. - */ - int indexes_in_flight; - struct lttng_ht *indexes_ht; - - /* - * If the stream is inactive, this field is updated with the - * live beacon timestamp end, when it is active, this - * field == -1ULL. - */ - uint64_t beacon_ts_end; - - /* CTF stream ID, -1ULL when unset (first packet not received yet). */ - uint64_t ctf_stream_id; - - /* Indicate if the stream was initialized for a data pending command. */ - bool data_pending_check_done; - - /* Is this stream a metadata stream ? */ - bool is_metadata; - /* Amount of metadata received (bytes). */ - uint64_t metadata_received; - - /* - * Member of the stream list in struct ctf_trace. - * Updates are protected by the stream_list_lock. - * Traversals are protected by RCU. - */ - struct cds_list_head stream_node; - /* - * Temporary list belonging to the connection until all streams - * are received for that connection. - * Member of the stream recv list in the connection. - * Updates are protected by the stream_recv_list_lock. - * Traversals are protected by RCU. - */ - bool in_recv_list; - struct cds_list_head recv_node; - /* Protected by session lock. */ - bool published; - /* Notified viewer that no new metadata is available. */ - bool no_new_metadata_notified; - /* - * Node of stream within global stream hash table. - */ - struct lttng_ht_node_u64 node; - bool in_stream_ht; /* is stream in stream hash table. */ - struct rcu_head rcu_node; /* For call_rcu teardown. */ - /* - * The trace chunk to which the file currently being produced (if any) - * belongs. - * - * Note that a relay stream can have no output trace chunk. For - * instance, after a session stop followed by a session clear, - * streams will not have an output trace chunk until the session - * is resumed. - */ - struct lttng_trace_chunk *trace_chunk; - LTTNG_OPTIONAL(struct relay_stream_rotation) ongoing_rotation; - uint64_t completed_rotation_count; -}; - -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); - -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 */