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
  29 #define LTTNG_DEFAULT_NETWORK_VIEWER_PORT       5344
  30
  31 #define LTTNG_LIVE_MAJOR                        2
  32 #define LTTNG_LIVE_MINOR                        4
  33
  34 struct lttng_live_ctx {
  35         char traced_hostname[NAME_MAX];
  36         char session_name[NAME_MAX];
  37         char relay_hostname[NAME_MAX];
  38         int control_sock;
  39         int port;
  40         /* Protocol version to use for this connection. */
  41         uint32_t major;
  42         uint32_t minor;
  43         struct lttng_live_session *session;
  44         struct bt_context *bt_ctx;
  45         GArray *session_ids;
  46 };
  47
  48 struct lttng_live_viewer_stream {
  49         uint64_t id;
  50         uint64_t mmap_size;
  51         FILE *metadata_fp_write;
  52         ssize_t metadata_len;
  53         int metadata_flag;
  54         int first_read;
  55         struct lttng_live_session *session;
  56         struct lttng_live_ctf_trace *ctf_trace;
  57         char path[PATH_MAX];
  58 };
  59
  60 struct lttng_live_session {
  61         uint64_t live_timer_interval;
  62         uint64_t stream_count;
  63         struct lttng_live_ctx *ctx;
  64         struct lttng_live_viewer_stream *streams;
  65         GHashTable *ctf_traces;
  66 };
  67
  68 struct lttng_live_ctf_trace {
  69         uint64_t ctf_trace_id;
  70         struct lttng_live_viewer_stream *metadata_stream;
  71         GPtrArray *streams;
  72         FILE *metadata_fp;
  73         struct bt_trace_handle *handle;
  74         int trace_id;
  75         int in_use;
  76 };
  77
  78 /* Just used in listing. */
  79 struct lttng_live_relay_session {
  80         uint32_t streams;
  81         uint32_t clients;
  82         uint32_t timer;
  83         char *name;
  84         char *hostname;
  85 };
  86
  87 int lttng_live_connect_viewer(struct lttng_live_ctx *ctx);
  88 int lttng_live_establish_connection(struct lttng_live_ctx *ctx);
  89 int lttng_live_list_sessions(struct lttng_live_ctx *ctx, const char *path);
  90 int lttng_live_attach_session(struct lttng_live_ctx *ctx, uint64_t id);
  91 int lttng_live_read(struct lttng_live_ctx *ctx);
  92 int lttng_live_get_new_streams(struct lttng_live_ctx *ctx, uint64_t id);
  93 int lttng_live_should_quit(void);
  94
  95 #endif /* _LTTNG_LIVE_H */