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55c2a7f9 JD |
1 | /* |
2 | * Copyright (C) 2017 - Julien Desfossez <jdesfossez@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License, version 2 only, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along | |
14 | * with this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
18 | #ifndef SESSIOND_TIMER_H | |
19 | #define SESSIOND_TIMER_H | |
20 | ||
21 | #include <pthread.h> | |
22 | ||
23 | #include "session.h" | |
24 | ||
25 | #define LTTNG_SESSIOND_SIG_TEARDOWN SIGRTMIN + 10 | |
26 | #define LTTNG_SESSIOND_SIG_EXIT SIGRTMIN + 11 | |
27 | #define LTTNG_SESSIOND_SIG_ROTATE_PENDING SIGRTMIN + 12 | |
28 | ||
29 | #define CLOCKID CLOCK_MONOTONIC | |
30 | ||
31 | /* | |
32 | * Handle timer teardown race wrt memory free of private data by sessiond | |
33 | * signals are handled by a single thread, which permits a synchronization | |
34 | * point between handling of each signal. Internal lock ensures mutual | |
35 | * exclusion. | |
36 | */ | |
37 | struct timer_signal_data { | |
38 | pthread_t tid; /* thread id managing signals */ | |
39 | int setup_done; | |
40 | int qs_done; | |
41 | pthread_mutex_t lock; | |
42 | }; | |
43 | ||
09a41363 JD |
44 | struct timer_thread_parameters { |
45 | int rotate_timer_pipe; | |
46 | }; | |
47 | ||
55c2a7f9 JD |
48 | void *sessiond_timer_thread(void *data); |
49 | int sessiond_timer_signal_init(void); | |
50 | ||
0d2ff20e | 51 | int sessiond_timer_rotate_pending_start(struct ltt_session *session, unsigned int |
55c2a7f9 | 52 | interval_us); |
0d2ff20e | 53 | void sessiond_timer_rotate_pending_stop(struct ltt_session *session); |
55c2a7f9 JD |
54 | |
55 | #endif /* SESSIOND_TIMER_H */ |