src/liblttng-live.h

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