Commit | Line | Data |
---|---|---|
91d76f53 DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
82a3637f DG |
6 | * as published by the Free Software Foundation; only version 2 |
7 | * of the License. | |
91d76f53 DG |
8 | * |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
17 | */ | |
18 | ||
19 | #ifndef _TRACEABLE_APP_H | |
20 | #define _TRACEABLE_APP_H | |
21 | ||
099e26bd | 22 | #include <stdint.h> |
1e307fab DG |
23 | #include <urcu/list.h> |
24 | ||
44d3bd01 DG |
25 | #include "trace-ust.h" |
26 | ||
099e26bd DG |
27 | /* |
28 | * Application registration data structure. | |
29 | */ | |
30 | struct ust_register_msg { | |
31 | uint32_t major; | |
32 | uint32_t minor; | |
33 | pid_t pid; | |
34 | pid_t ppid; | |
35 | uid_t uid; | |
36 | gid_t gid; | |
37 | char name[16]; | |
38 | }; | |
39 | ||
40 | /* | |
41 | * Traceable application list. | |
42 | */ | |
3bd1e081 | 43 | struct ust_app_list { |
099e26bd DG |
44 | /* |
45 | * This lock protects any read/write access to the list and count (which is | |
46 | * basically the list size). All public functions in traceable-app.c | |
47 | * acquire this lock and release it before returning. If none of those | |
48 | * functions are used, the lock MUST be acquired in order to iterate or/and | |
49 | * do any actions on that list. | |
50 | */ | |
51 | pthread_mutex_t lock; | |
52 | ||
53 | /* | |
54 | * Number of element in the list. The session list lock MUST be acquired if | |
55 | * this counter is used when iterating over the session list. | |
56 | */ | |
57 | unsigned int count; | |
58 | ||
59 | /* Linked list head */ | |
91d76f53 DG |
60 | struct cds_list_head head; |
61 | }; | |
62 | ||
050349bb DG |
63 | /* Registered traceable applications. Libust registers to the session daemon |
64 | * and a linked list is kept of all running traceable app. | |
91d76f53 | 65 | */ |
56fff090 | 66 | struct ust_app { |
099e26bd | 67 | int sock; /* Communication socket with the application */ |
91d76f53 | 68 | pid_t pid; |
099e26bd DG |
69 | pid_t ppid; |
70 | uid_t uid; /* User ID that owns the apps */ | |
71 | gid_t gid; /* Group ID that owns the apps */ | |
72 | uint32_t v_major; /* Verion major number */ | |
73 | uint32_t v_minor; /* Verion minor number */ | |
74 | char name[17]; /* Process name (short) */ | |
44d3bd01 | 75 | struct ltt_ust_channel_list channels; |
099e26bd | 76 | struct cds_list_head list; |
91d76f53 DG |
77 | }; |
78 | ||
3bd1e081 MD |
79 | #ifdef CONFIG_LTTNG_TOOLS_HAVE_UST |
80 | ||
56fff090 DG |
81 | int ust_app_register(struct ust_register_msg *msg, int sock); |
82 | void ust_app_unregister(int sock); | |
83 | unsigned int ust_app_list_count(void); | |
91d76f53 | 84 | |
56fff090 DG |
85 | void ust_app_lock_list(void); |
86 | void ust_app_unlock_list(void); | |
87 | void ust_app_clean_list(void); | |
88 | struct ust_app_list *ust_app_get_list(void); | |
89 | struct ust_app *ust_app_get_by_pid(pid_t pid); | |
44d3bd01 | 90 | |
3bd1e081 MD |
91 | #else |
92 | ||
93 | static inline | |
94 | int ust_app_register(struct ust_register_msg *msg, int sock) | |
95 | { | |
96 | return -ENOSYS; | |
97 | } | |
98 | static inline | |
99 | void ust_app_unregister(int sock) | |
100 | { | |
101 | } | |
102 | static inline | |
103 | unsigned int ust_app_list_count(void) | |
104 | { | |
105 | return 0; | |
106 | } | |
107 | ||
108 | static inline | |
109 | void ust_app_lock_list(void) | |
110 | { | |
111 | } | |
112 | static inline | |
113 | void ust_app_unlock_list(void) | |
114 | { | |
115 | } | |
116 | static inline | |
117 | void ust_app_clean_list(void) | |
118 | { | |
119 | } | |
120 | static inline | |
121 | struct ust_app_list *ust_app_get_list(void) | |
122 | { | |
123 | return NULL; | |
124 | } | |
125 | static inline | |
126 | struct ust_app *ust_app_get_by_pid(pid_t pid) | |
127 | { | |
128 | return NULL; | |
129 | } | |
130 | ||
131 | ||
132 | ||
133 | #endif | |
134 | ||
91d76f53 | 135 | #endif /* _TRACEABLE_APP_H */ |