| 1 | #ifndef LTTNG_RELAYD_H |
| 2 | #define LTTNG_RELAYD_H |
| 3 | |
| 4 | /* |
| 5 | * Copyright (C) 2012 Julien Desfossez <jdesfossez@efficios.com> |
| 6 | * Copyright (C) 2012 David Goulet <dgoulet@efficios.com> |
| 7 | * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 8 | * |
| 9 | * SPDX-License-Identifier: GPL-2.0-only |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include <limits.h> |
| 14 | #include <urcu.h> |
| 15 | #include <urcu/wfcqueue.h> |
| 16 | |
| 17 | #include <common/hashtable/hashtable.h> |
| 18 | #include <common/fd-tracker/fd-tracker.h> |
| 19 | |
| 20 | struct sessiond_trace_chunk_registry; |
| 21 | |
| 22 | /* |
| 23 | * Queue used to enqueue relay requests |
| 24 | */ |
| 25 | struct relay_conn_queue { |
| 26 | struct cds_wfcq_head head; |
| 27 | struct cds_wfcq_tail tail; |
| 28 | int32_t futex; |
| 29 | }; |
| 30 | |
| 31 | enum relay_group_output_by { |
| 32 | RELAYD_GROUP_OUTPUT_BY_UNKNOWN, |
| 33 | RELAYD_GROUP_OUTPUT_BY_HOST, |
| 34 | RELAYD_GROUP_OUTPUT_BY_SESSION, |
| 35 | }; |
| 36 | |
| 37 | /* |
| 38 | * Contains stream indexed by ID. This is important since many commands lookup |
| 39 | * streams only by ID thus also keeping them in this hash table makes the |
| 40 | * search O(1). |
| 41 | */ |
| 42 | extern struct lttng_ht *sessions_ht; |
| 43 | extern struct lttng_ht *relay_streams_ht; |
| 44 | extern struct lttng_ht *viewer_streams_ht; |
| 45 | extern struct sessiond_trace_chunk_registry *sessiond_trace_chunk_registry; |
| 46 | |
| 47 | extern char *opt_output_path; |
| 48 | extern const char *tracing_group_name; |
| 49 | extern const char * const config_section_name; |
| 50 | extern enum relay_group_output_by opt_group_output_by; |
| 51 | |
| 52 | extern int thread_quit_pipe[2]; |
| 53 | |
| 54 | extern struct fd_tracker *the_fd_tracker; |
| 55 | |
| 56 | void lttng_relay_notify_ready(void); |
| 57 | int lttng_relay_stop_threads(void); |
| 58 | |
| 59 | #endif /* LTTNG_RELAYD_H */ |