Fix: leak of streams
[babeltrace.git] / formats / lttng-live / lttng-live.h
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1#ifndef _LTTNG_LIVE_H
2#define _LTTNG_LIVE_H
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3
4/*
5 * Copyright 2013 Julien Desfossez <julien.desfossez@efficios.com>
6 * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * SOFTWARE.
25 */
26
27#include <stdint.h>
d1368cd1 28#include <sys/param.h>
21fe3eb3 29#include <babeltrace/list.h>
fb6b45aa 30#include "lttng-viewer-abi.h"
4a744367 31
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32#define LTTNG_DEFAULT_NETWORK_VIEWER_PORT 5344
33
34#define LTTNG_LIVE_MAJOR 2
35#define LTTNG_LIVE_MINOR 4
36
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37/*
38 * The lttng-live output file pointer is currently hardcoded to stdout,
39 * and is expected to be hardcoded to this by fflush() performed between
40 * each packet.
41 */
42#define LTTNG_LIVE_OUTPUT_FP stdout
43
4a744367 44struct lttng_live_ctx {
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45 char traced_hostname[MAXNAMLEN];
46 char session_name[MAXNAMLEN];
47 char relay_hostname[MAXNAMLEN];
4a744367 48 int control_sock;
b5a1fa45 49 int port;
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50 /* Protocol version to use for this connection. */
51 uint32_t major;
52 uint32_t minor;
4a744367 53 struct lttng_live_session *session;
2acdc547 54 struct bt_context *bt_ctx;
b5a1fa45 55 GArray *session_ids;
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56};
57
58struct lttng_live_viewer_stream {
59 uint64_t id;
60 uint64_t mmap_size;
fb6b45aa 61 uint64_t ctf_stream_id;
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62 FILE *metadata_fp_write;
63 ssize_t metadata_len;
4a744367 64 int metadata_flag;
fb6b45aa 65 int data_pending;
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66 struct lttng_live_session *session;
67 struct lttng_live_ctf_trace *ctf_trace;
fb6b45aa 68 struct lttng_viewer_index current_index;
21fe3eb3 69 struct bt_list_head stream_node;
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70 char path[PATH_MAX];
71};
72
73struct lttng_live_session {
74 uint64_t live_timer_interval;
75 uint64_t stream_count;
76 struct lttng_live_ctx *ctx;
21fe3eb3 77 struct bt_list_head stream_list;
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78 GHashTable *ctf_traces;
79};
80
81struct lttng_live_ctf_trace {
82 uint64_t ctf_trace_id;
83 struct lttng_live_viewer_stream *metadata_stream;
84 GPtrArray *streams;
85 FILE *metadata_fp;
150595c4 86 struct bt_trace_handle *handle;
4a744367 87 int trace_id;
2acdc547 88 int in_use;
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89};
90
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91/* Just used in listing. */
92struct lttng_live_relay_session {
93 uint32_t streams;
94 uint32_t clients;
95 uint32_t timer;
96 char *name;
97 char *hostname;
98};
99
100int lttng_live_connect_viewer(struct lttng_live_ctx *ctx);
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101int lttng_live_establish_connection(struct lttng_live_ctx *ctx);
102int lttng_live_list_sessions(struct lttng_live_ctx *ctx, const char *path);
103int lttng_live_attach_session(struct lttng_live_ctx *ctx, uint64_t id);
28756729 104int lttng_live_read(struct lttng_live_ctx *ctx);
2acdc547 105int lttng_live_get_new_streams(struct lttng_live_ctx *ctx, uint64_t id);
8ace20bf 106int lttng_live_should_quit(void);
4a744367 107
c98627ca 108#endif /* _LTTNG_LIVE_H */
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