276051dafeb82adf3cfd2bc3559e603964681a59
[babeltrace.git] / formats / lttng-live / lttng-live.h
1 #ifndef _LTTNG_LIVE_H
2 #define _LTTNG_LIVE_H
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>
28 #include <sys/param.h>
29 #include "lttng-viewer-abi.h"
30
31 #define LTTNG_DEFAULT_NETWORK_VIEWER_PORT 5344
32
33 #define LTTNG_LIVE_MAJOR 2
34 #define LTTNG_LIVE_MINOR 4
35
36 /*
37 * The lttng-live output file pointer is currently hardcoded to stdout,
38 * and is expected to be hardcoded to this by fflush() performed between
39 * each packet.
40 */
41 #define LTTNG_LIVE_OUTPUT_FP stdout
42
43 struct lttng_live_ctx {
44 char traced_hostname[MAXNAMLEN];
45 char session_name[MAXNAMLEN];
46 char relay_hostname[MAXNAMLEN];
47 int control_sock;
48 int port;
49 /* Protocol version to use for this connection. */
50 uint32_t major;
51 uint32_t minor;
52 struct lttng_live_session *session;
53 struct bt_context *bt_ctx;
54 GArray *session_ids;
55 };
56
57 struct lttng_live_viewer_stream {
58 uint64_t id;
59 uint64_t mmap_size;
60 uint64_t ctf_stream_id;
61 FILE *metadata_fp_write;
62 ssize_t metadata_len;
63 int metadata_flag;
64 int data_pending;
65 struct lttng_live_session *session;
66 struct lttng_live_ctf_trace *ctf_trace;
67 struct lttng_viewer_index current_index;
68 char path[PATH_MAX];
69 };
70
71 struct lttng_live_session {
72 uint64_t live_timer_interval;
73 uint64_t stream_count;
74 struct lttng_live_ctx *ctx;
75 struct lttng_live_viewer_stream *streams;
76 GHashTable *ctf_traces;
77 };
78
79 struct lttng_live_ctf_trace {
80 uint64_t ctf_trace_id;
81 struct lttng_live_viewer_stream *metadata_stream;
82 GPtrArray *streams;
83 FILE *metadata_fp;
84 struct bt_trace_handle *handle;
85 int trace_id;
86 int in_use;
87 };
88
89 /* Just used in listing. */
90 struct lttng_live_relay_session {
91 uint32_t streams;
92 uint32_t clients;
93 uint32_t timer;
94 char *name;
95 char *hostname;
96 };
97
98 int lttng_live_connect_viewer(struct lttng_live_ctx *ctx);
99 int lttng_live_establish_connection(struct lttng_live_ctx *ctx);
100 int lttng_live_list_sessions(struct lttng_live_ctx *ctx, const char *path);
101 int lttng_live_attach_session(struct lttng_live_ctx *ctx, uint64_t id);
102 int lttng_live_read(struct lttng_live_ctx *ctx);
103 int lttng_live_get_new_streams(struct lttng_live_ctx *ctx, uint64_t id);
104 int lttng_live_should_quit(void);
105
106 #endif /* _LTTNG_LIVE_H */
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