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