Add disable all UST event(s) command
[lttng-tools.git] / lttng-sessiond / ust-app.h
... / ...
CommitLineData
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
6 * as published by the Free Software Foundation; only version 2
7 * of the License.
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 _LTT_UST_APP_H
20#define _LTT_UST_APP_H
21
22#include <stdint.h>
23#include <urcu/list.h>
24
25#include "trace-ust.h"
26
27#define UST_APP_EVENT_LIST_SIZE 32
28
29extern int ust_consumerd64_fd, ust_consumerd32_fd;
30
31/*
32 * Application registration data structure.
33 */
34struct ust_register_msg {
35 uint32_t major;
36 uint32_t minor;
37 pid_t pid;
38 pid_t ppid;
39 uid_t uid;
40 gid_t gid;
41 uint32_t bits_per_long;
42 char name[16];
43};
44
45/*
46 * Global applications HT used by the session daemon.
47 */
48struct cds_lfht *ust_app_ht;
49
50struct cds_lfht *ust_app_sock_key_map;
51
52struct ust_app_key {
53 pid_t pid;
54 int sock;
55 struct cds_lfht_node node;
56};
57
58struct ust_app_event {
59 int enabled;
60 int handle;
61 struct lttng_ust_object_data *obj;
62 struct lttng_ust_event attr;
63 char name[LTTNG_UST_SYM_NAME_LEN];
64 struct cds_lfht *ctx;
65 struct cds_lfht_node node;
66};
67
68struct ust_app_channel {
69 int enabled;
70 int handle;
71 char name[LTTNG_UST_SYM_NAME_LEN];
72 struct lttng_ust_channel attr;
73 struct lttng_ust_object_data *obj;
74 struct ltt_ust_stream_list streams;
75 struct cds_lfht *ctx;
76 struct cds_lfht *events;
77 struct cds_lfht_node node;
78};
79
80struct ust_app_session {
81 int enabled;
82 /* started: has the session been in started state at any time ? */
83 int started; /* allows detection of start vs restart. */
84 int handle; /* Used has unique identifier */
85 unsigned int uid;
86 struct ltt_ust_metadata *metadata;
87 struct cds_lfht *channels; /* Registered channels */
88 struct cds_lfht_node node;
89 char path[PATH_MAX];
90};
91
92/*
93 * Registered traceable applications. Libust registers to the session daemon
94 * and a linked list is kept of all running traceable app.
95 */
96struct ust_app {
97 pid_t ppid;
98 uid_t uid; /* User ID that owns the apps */
99 gid_t gid; /* Group ID that owns the apps */
100 int bits_per_long;
101 uint32_t v_major; /* Verion major number */
102 uint32_t v_minor; /* Verion minor number */
103 char name[17]; /* Process name (short) */
104 struct cds_lfht *sessions;
105 struct cds_lfht_node node;
106 struct ust_app_key key;
107};
108
109#ifdef HAVE_LIBLTTNG_UST_CTL
110
111int ust_app_register(struct ust_register_msg *msg, int sock);
112void ust_app_unregister(int sock);
113int ust_app_create_channel_all(struct ltt_ust_session *usess,
114 struct ltt_ust_channel *uchan);
115int ust_app_create_event_all(struct ltt_ust_session *usess,
116 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
117unsigned long ust_app_list_count(void);
118int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app);
119int ust_app_stop_trace(struct ltt_ust_session *usess, struct ust_app *app);
120int ust_app_start_trace_all(struct ltt_ust_session *usess);
121int ust_app_stop_trace_all(struct ltt_ust_session *usess);
122int ust_app_destroy_trace(struct ltt_ust_session *usess, struct ust_app *app);
123int ust_app_destroy_trace_all(struct ltt_ust_session *usess);
124int ust_app_list_events(struct lttng_event **events);
125int ust_app_disable_channel_all(struct ltt_ust_session *usess,
126 struct ltt_ust_channel *uchan);
127int ust_app_enable_channel_all(struct ltt_ust_session *usess,
128 struct ltt_ust_channel *uchan);
129int ust_app_disable_event_all(struct ltt_ust_session *usess,
130 struct ltt_ust_channel *uchan);
131void ust_app_global_update(struct ltt_ust_session *usess, int sock);
132
133void ust_app_clean_list(void);
134void ust_app_ht_alloc(void);
135struct cds_lfht *ust_app_get_ht(void);
136struct ust_app *ust_app_find_by_pid(pid_t pid);
137
138#else /* HAVE_LIBLTTNG_UST_CTL */
139
140static inline
141int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app)
142{
143 return 0;
144}
145static inline
146int ust_app_start_trace_all(struct ltt_ust_session *usess)
147{
148 return 0;
149}
150static inline
151int ust_app_list_events(struct lttng_event **events)
152{
153 return 0;
154}
155static inline
156int ust_app_register(struct ust_register_msg *msg, int sock)
157{
158 return -ENOSYS;
159}
160static inline
161void ust_app_unregister(int sock)
162{
163}
164static inline
165unsigned int ust_app_list_count(void)
166{
167 return 0;
168}
169static inline
170void ust_app_lock_list(void)
171{
172}
173static inline
174void ust_app_unlock_list(void)
175{
176}
177static inline
178void ust_app_clean_list(void)
179{
180}
181static inline
182struct ust_app_list *ust_app_get_list(void)
183{
184 return NULL;
185}
186static inline
187struct ust_app *ust_app_get_by_pid(pid_t pid)
188{
189 return NULL;
190}
191static inline
192int ust_app_add_channel_all(struct ltt_ust_session *usess,
193 struct ltt_ust_channel *uchan)
194{
195 return 0;
196}
197static inline
198int ust_app_add_event_all(struct ltt_ust_session *usess,
199 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
200{
201 return 0;
202}
203static inline
204struct cds_lfht *ust_app_get_ht(void)
205{
206 return NULL;
207}
208static inline
209void ust_app_ht_alloc(void)
210{
211}
212static inline
213void ust_app_global_update(struct ltt_ust_session *usess, int sock)
214{
215}
216
217#endif /* HAVE_LIBLTTNG_UST_CTL */
218
219#endif /* _LTT_UST_APP_H */
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