Update RCU hashtable from upstream urcu
[lttng-tools.git] / ltt-sessiond / ust-app.h
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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
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6 * as published by the Free Software Foundation; only version 2
7 * of the License.
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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
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19#ifndef _LTT_UST_APP_H
20#define _LTT_UST_APP_H
91d76f53 21
099e26bd 22#include <stdint.h>
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23#include <urcu/list.h>
24
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25#include "trace-ust.h"
26
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27/*
28 * Application registration data structure.
29 */
30struct 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
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40struct cds_lfht *ust_app_ht;
41
42struct cds_lfht *ust_app_sock_key_map;
43
44struct ust_app_key {
45 pid_t pid;
46 int sock;
47 struct cds_lfht_node node;
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48};
49
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50/*
51 * Registered traceable applications. Libust registers to the session daemon
050349bb 52 * and a linked list is kept of all running traceable app.
91d76f53 53 */
56fff090 54struct ust_app {
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55 //int sock;
56 //pid_t pid;
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57 pid_t ppid;
58 uid_t uid; /* User ID that owns the apps */
59 gid_t gid; /* Group ID that owns the apps */
60 uint32_t v_major; /* Verion major number */
61 uint32_t v_minor; /* Verion minor number */
62 char name[17]; /* Process name (short) */
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63 struct cds_lfht *channels;
64 struct cds_lfht_node node;
65 struct ust_app_key key;
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66};
67
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68#ifdef CONFIG_LTTNG_TOOLS_HAVE_UST
69
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70int ust_app_register(struct ust_register_msg *msg, int sock);
71void ust_app_unregister(int sock);
f6a9efaa 72unsigned long ust_app_list_count(void);
91d76f53 73
56fff090 74void ust_app_clean_list(void);
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75void ust_app_ht_alloc(void);
76struct cds_lfht *ust_app_get_ht(void);
77struct ust_app *ust_app_find_by_pid(pid_t pid);
44d3bd01 78
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79#else
80
81static inline
82int ust_app_register(struct ust_register_msg *msg, int sock)
83{
84 return -ENOSYS;
85}
86static inline
87void ust_app_unregister(int sock)
88{
89}
90static inline
91unsigned int ust_app_list_count(void)
92{
93 return 0;
94}
95
96static inline
97void ust_app_lock_list(void)
98{
99}
100static inline
101void ust_app_unlock_list(void)
102{
103}
104static inline
105void ust_app_clean_list(void)
106{
107}
108static inline
109struct ust_app_list *ust_app_get_list(void)
110{
111 return NULL;
112}
113static inline
114struct ust_app *ust_app_get_by_pid(pid_t pid)
115{
116 return NULL;
117}
118
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119#endif
120
f6a9efaa 121#endif /* _LTT_UST_APP_H */
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