Commit | Line | Data |
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8c0faa1d DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
88564da0 | 3 | * Copyright (C) 2013 - Raphaël Beamonte <raphael.beamonte@gmail.com> |
fac6795d | 4 | * |
d14d33bf AM |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License, version 2 only, | |
7 | * as published by the Free Software Foundation. | |
8c0faa1d | 8 | * |
fac6795d DG |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
d14d33bf | 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
fac6795d | 12 | * GNU General Public License for more details. |
8c0faa1d | 13 | * |
d14d33bf AM |
14 | * You should have received a copy of the GNU General Public License along |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
fac6795d DG |
17 | */ |
18 | ||
19 | #ifndef _LTT_SESSIOND_H | |
20 | #define _LTT_SESSIOND_H | |
21 | ||
f6a9efaa | 22 | #include <urcu.h> |
8bdee6e2 | 23 | #include <urcu/wfcqueue.h> |
099e26bd | 24 | |
10a8a223 | 25 | #include <common/sessiond-comm/sessiond-comm.h> |
d0b96690 | 26 | #include <common/compat/poll.h> |
730389d9 | 27 | #include <common/compat/socket.h> |
10a8a223 DG |
28 | |
29 | #include "session.h" | |
56fff090 | 30 | #include "ust-app.h" |
e9404c27 | 31 | #include "notification-thread.h" |
e6142f2e | 32 | #include "sessiond-config.h" |
099e26bd | 33 | |
686204ab MD |
34 | extern const char default_home_dir[], |
35 | default_tracing_group[], | |
36 | default_ust_sock_dir[], | |
37 | default_global_apps_pipe[]; | |
fac6795d | 38 | |
2f77fc4b DG |
39 | /* Set in main.c at boot time of the daemon */ |
40 | extern int kernel_tracer_fd; | |
41 | ||
e9404c27 JG |
42 | extern struct notification_thread_handle *notification_thread_handle; |
43 | ||
5461b305 DG |
44 | /* |
45 | * This contains extra data needed for processing a command received by the | |
46 | * session daemon from the lttng client. | |
47 | */ | |
48 | struct command_ctx { | |
49 | int ust_sock; | |
50 | unsigned int lttng_msg_size; | |
51 | struct ltt_session *session; | |
52 | struct lttcomm_lttng_msg *llm; | |
53 | struct lttcomm_session_msg *lsm; | |
730389d9 | 54 | lttng_sock_cred creds; |
5461b305 DG |
55 | }; |
56 | ||
099e26bd DG |
57 | struct ust_command { |
58 | int sock; | |
59 | struct ust_register_msg reg_msg; | |
8bdee6e2 | 60 | struct cds_wfcq_node node; |
099e26bd DG |
61 | }; |
62 | ||
63 | /* | |
7a44d6f1 | 64 | * Queue used to enqueue UST registration request (ust_command) and synchronized |
099e26bd DG |
65 | * by a futex with a scheme N wakers / 1 waiters. See futex.c/.h |
66 | */ | |
67 | struct ust_cmd_queue { | |
68 | int32_t futex; | |
8bdee6e2 SM |
69 | struct cds_wfcq_head head; |
70 | struct cds_wfcq_tail tail; | |
099e26bd DG |
71 | }; |
72 | ||
f45e313d DG |
73 | /* |
74 | * This is the wait queue containing wait nodes during the application | |
75 | * registration process. | |
76 | */ | |
77 | struct ust_reg_wait_queue { | |
78 | unsigned long count; | |
79 | struct cds_list_head head; | |
80 | }; | |
81 | ||
82 | /* | |
83 | * Use by the dispatch registration to queue UST command socket to wait for the | |
84 | * notify socket. | |
85 | */ | |
86 | struct ust_reg_wait_node { | |
87 | struct ust_app *app; | |
88 | struct cds_list_head head; | |
89 | }; | |
90 | ||
d0b96690 DG |
91 | /* |
92 | * This pipe is used to inform the thread managing application notify | |
93 | * communication that a command is queued and ready to be processed. | |
94 | */ | |
95 | extern int apps_cmd_notify_pipe[2]; | |
96 | ||
0b2dc8df MD |
97 | /* |
98 | * Used to notify that a hash table needs to be destroyed by dedicated | |
99 | * thread. Required by design because we don't want to move destroy | |
100 | * paths outside of large RCU read-side lock paths, and destroy cannot | |
101 | * be called by call_rcu thread, because it may hang (waiting for | |
102 | * call_rcu completion). | |
103 | */ | |
104 | extern int ht_cleanup_pipe[2]; | |
105 | ||
12744796 DG |
106 | /* |
107 | * Populated when the daemon starts with the current page size of the system. | |
108 | */ | |
109 | extern long page_size; | |
110 | ||
5e97de00 JG |
111 | /* Application health monitoring */ |
112 | extern struct health_app *health_sessiond; | |
113 | ||
26296c48 JG |
114 | /* |
115 | * Section name to look for in the daemon configuration file. | |
116 | */ | |
117 | extern const char * const config_section_name; | |
118 | ||
f43f95a9 DG |
119 | /* Is this daemon root or not. */ |
120 | extern int is_root; | |
121 | ||
e6142f2e | 122 | extern struct sessiond_config config; |
e9404c27 | 123 | |
d0b96690 | 124 | int sessiond_check_thread_quit_pipe(int fd, uint32_t events); |
5e97de00 | 125 | int sessiond_set_thread_pollset(struct lttng_poll_event *events, size_t size); |
ef367a93 | 126 | void sessiond_notify_ready(void); |
9cc1ba3b | 127 | void sessiond_signal_parents(void); |
ef367a93 | 128 | |
fac6795d | 129 | #endif /* _LTT_SESSIOND_H */ |