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 stream_node;
  70         char path[PATH_MAX];
  71 };
  72
  73 struct lttng_live_session {
  74         uint64_t live_timer_interval;
  75         uint64_t stream_count;
  76         struct lttng_live_ctx *ctx;
  77         struct bt_list_head stream_list;
  78         GHashTable *ctf_traces;
  79 };
  80
  81 struct lttng_live_ctf_trace {
  82         uint64_t ctf_trace_id;
  83         struct lttng_live_viewer_stream *metadata_stream;
  84         GPtrArray *streams;
  85         FILE *metadata_fp;
  86         struct bt_trace_handle *handle;
  87         int trace_id;
  88         int in_use;
  89 };
  90
  91 /* Just used in listing. */
  92 struct lttng_live_relay_session {
  93         uint32_t streams;
  94         uint32_t clients;
  95         uint32_t timer;
  96         char *name;
  97         char *hostname;
  98 };
  99
 100 int lttng_live_connect_viewer(struct lttng_live_ctx *ctx);
 101 int lttng_live_establish_connection(struct lttng_live_ctx *ctx);
 102 int lttng_live_list_sessions(struct lttng_live_ctx *ctx, const char *path);
 103 int lttng_live_attach_session(struct lttng_live_ctx *ctx, uint64_t id);
 104 int lttng_live_read(struct lttng_live_ctx *ctx);
 105 int lttng_live_get_new_streams(struct lttng_live_ctx *ctx, uint64_t id);
 106 int lttng_live_should_quit(void);
 107
 108 #endif /* _LTTNG_LIVE_H */