formats/lttng-live/lttng-live-functions.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         int control_sock;
  37         struct lttng_live_session *session;
  38         GArray *session_ids;
  39         struct bt_context *bt_ctx;
  40 };
  41
  42 struct lttng_live_viewer_stream {
  43         uint64_t id;
  44         uint64_t mmap_size;
  45         int fd;
  46         int metadata_flag;
  47         int first_read;
  48         struct lttng_live_session *session;
  49         struct lttng_live_ctf_trace *ctf_trace;
  50         char path[PATH_MAX];
  51 };
  52
  53 struct lttng_live_session {
  54         uint64_t live_timer_interval;
  55         uint64_t stream_count;
  56         struct lttng_live_ctx *ctx;
  57         struct lttng_live_viewer_stream *streams;
  58         GHashTable *ctf_traces;
  59 };
  60
  61 struct lttng_live_ctf_trace {
  62         uint64_t ctf_trace_id;
  63         struct lttng_live_viewer_stream *metadata_stream;
  64         GPtrArray *streams;
  65         FILE *metadata_fp;
  66         int trace_id;
  67         int in_use;
  68 };
  69
  70 int lttng_live_connect_viewer(struct lttng_live_ctx *ctx, char *hostname,
  71                 int port);
  72 int lttng_live_establish_connection(struct lttng_live_ctx *ctx);
  73 int lttng_live_list_sessions(struct lttng_live_ctx *ctx, const char *path);
  74 int lttng_live_attach_session(struct lttng_live_ctx *ctx, uint64_t id);
  75 void lttng_live_read(struct lttng_live_ctx *ctx);
  76 int lttng_live_get_new_streams(struct lttng_live_ctx *ctx, uint64_t id);
  77
  78 #endif /* _LTTNG_LIVE_FUNCTIONS_H */