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 #define DEFAULT_HOME_DIR                        "/tmp"
  23 #define DEFAULT_UST_SOCK_DIR            "/tmp/ust-app-socks"
  24 #define DEFAULT_GLOBAL_APPS_PIPE        "/tmp/ust-app-socks/global"
  25
  26 extern const char default_home_dir[],
  27         default_tracing_group[],
  28         default_ust_sock_dir[],
  29         default_global_apps_pipe[];
  30
  31 /* LTTng trace representation */
  32 struct ltt_lttng_trace {
  33         struct cds_list_head list;
  34         char trace_name[NAME_MAX];
  35         struct cds_list_head marker_list;
  36 };
  37
  38 /* UST trace representation */
  39 struct ltt_ust_trace {
  40         struct cds_list_head list;
  41         int shmid;
  42         char trace_name[NAME_MAX];
  43         struct cds_list_head markers;
  44 };
  45
  46 struct ltt_ust_marker {
  47         struct cds_list_head list;
  48         char *name;
  49         char *channel;
  50 };
  51
  52 /* Global session list */
  53 struct ltt_session_list {
  54         struct cds_list_head head;
  55 };
  56
  57 /* Traceable application list */
  58 struct ltt_traceable_app_list {
  59         struct cds_list_head head;
  60 };
  61
  62 /*
  63  * Registered traceable applications. Libust registers
  64  * to the session daemon and a linked list is kept
  65  * of all running traceable app.
  66  */
  67 struct ltt_traceable_app {
  68         struct cds_list_head list;
  69         pid_t pid;
  70         uid_t uid;              /* User ID that owns the apps */
  71 };
  72
  73 /*
  74  * ltt-session - This data structure contains information needed
  75  * to identify a tracing session for both LTTng and UST.
  76  */
  77 struct ltt_session {
  78         char *name;
  79         struct cds_list_head list;
  80         uuid_t uuid;
  81         struct cds_list_head ust_traces;
  82         struct cds_list_head lttng_traces;
  83         pid_t ust_consumer;
  84         pid_t lttng_consumer;
  85 };
  86
  87 #endif /* _LTT_SESSIOND_H */