Fix: Use list rather than ptr array for trace streams
[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 <babeltrace/list.h>
30 #include "lttng-viewer-abi.h"
31
32 #define LTTNG_DEFAULT_NETWORK_VIEWER_PORT 5344
33
34 #define LTTNG_LIVE_MAJOR 2
35 #define LTTNG_LIVE_MINOR 4
36
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
44 struct lttng_live_ctx {
45 char traced_hostname[MAXNAMLEN];
46 char session_name[MAXNAMLEN];
47 char relay_hostname[MAXNAMLEN];
48 int control_sock;
49 int port;
50 /* Protocol version to use for this connection. */
51 uint32_t major;
52 uint32_t minor;
53 struct lttng_live_session *session;
54 struct bt_context *bt_ctx;
55 GArray *session_ids;
56 };
57
58 struct lttng_live_viewer_stream {
59 uint64_t id;
60 uint64_t mmap_size;
61 uint64_t ctf_stream_id;
62 FILE *metadata_fp_write;
63 ssize_t metadata_len;
64 int metadata_flag;
65 int data_pending;
66 struct lttng_live_session *session;
67 struct lttng_live_ctf_trace *ctf_trace;
68 struct lttng_viewer_index current_index;
69 struct bt_list_head session_stream_node; /* Owns stream. */
70 struct bt_list_head trace_stream_node;
71 int in_trace;
72 char path[PATH_MAX];
73 };
74
75 struct lttng_live_session {
76 uint64_t live_timer_interval;
77 uint64_t stream_count;
78 struct lttng_live_ctx *ctx;
79 /* The session stream list owns the lttng_live_viewer_stream object. */
80 struct bt_list_head stream_list;
81 GHashTable *ctf_traces;
82 };
83
84 struct lttng_live_ctf_trace {
85 uint64_t ctf_trace_id;
86 struct lttng_live_viewer_stream *metadata_stream;
87 /* The trace has a list of streams, but it has no ownership on them. */
88 struct bt_list_head stream_list;
89 FILE *metadata_fp;
90 struct bt_trace_handle *handle;
91 int trace_id;
92 int in_use;
93 };
94
95 /* Just used in listing. */
96 struct lttng_live_relay_session {
97 uint32_t streams;
98 uint32_t clients;
99 uint32_t timer;
100 char *name;
101 char *hostname;
102 };
103
104 int lttng_live_connect_viewer(struct lttng_live_ctx *ctx);
105 int lttng_live_establish_connection(struct lttng_live_ctx *ctx);
106 int lttng_live_list_sessions(struct lttng_live_ctx *ctx, const char *path);
107 int lttng_live_attach_session(struct lttng_live_ctx *ctx, uint64_t id);
108 int lttng_live_read(struct lttng_live_ctx *ctx);
109 int lttng_live_get_new_streams(struct lttng_live_ctx *ctx, uint64_t id);
110 int lttng_live_should_quit(void);
111
112 #endif /* _LTTNG_LIVE_H */
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