ltt-sessiond/ltt-sessiond.h

   1 /* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
   2  *
   3  * This program is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU General Public License
   5  * as published by the Free Software Foundation; either version 2
   6  * of the License, or (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  16  *
  17  */
  18
  19 #ifndef _LTT_SESSIOND_H
  20 #define _LTT_SESSIOND_H
  21
  22 const char default_home_dir[] = "/tmp";
  23 const char default_tracing_group[] = "tracing";
  24 const char default_ust_sock_dir[] = "/tmp/ust-app-socks";
  25 const char default_global_apps_pipe[] = "/tmp/ust-app-socks/global";
  26
  27 /* LTTng trace representation */
  28 struct ltt_lttng_trace {
  29         struct cds_list_head list;
  30         char trace_name[NAME_MAX];
  31         struct cds_list_head marker_list;
  32 };
  33
  34 /* UST trace representation */
  35 struct ltt_ust_trace {
  36         struct cds_list_head list;
  37         int shmid;
  38         char trace_name[NAME_MAX];
  39         struct cds_list_head markers;
  40 };
  41
  42 struct ltt_ust_marker {
  43         struct cds_list_head list;
  44         char *name;
  45         char *channel;
  46 };
  47
  48 /* Global session list */
  49 struct ltt_session_list {
  50         struct cds_list_head head;
  51 };
  52
  53 /* Traceable application list */
  54 struct ltt_traceable_app_list {
  55         struct cds_list_head head;
  56 };
  57
  58 /*
  59  * Registered traceable applications. Libust registers
  60  * to the session daemon and a linked list is kept
  61  * of all running traceable app.
  62  */
  63 struct ltt_traceable_app {
  64         struct cds_list_head list;
  65         pid_t pid;
  66         uid_t uid;              /* User ID that owns the apps */
  67 };
  68
  69 /*
  70  * ltt-session - This data structure contains information needed
  71  * to identify a tracing session for both LTTng and UST.
  72  */
  73 struct ltt_session {
  74         char *name;
  75         struct cds_list_head list;
  76         uuid_t uuid;
  77         struct cds_list_head ust_traces;
  78         struct cds_list_head lttng_traces;
  79         pid_t ust_consumer;
  80         pid_t lttng_consumer;
  81 };
  82
  83 #endif /* _LTT_SESSIOND_H */