projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| d086f507 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 | |
| d88744a4 | 27 | #define LTTNG_SESSIOND_SIG_ROTATE_PENDING SIGRTMIN + 12 |
| 259c2674 | 28 | #define LTTNG_SESSIOND_SIG_ROTATE_TIMER SIGRTMIN + 13 |
| d086f507 JD |
29 | |
| 30 | #define CLOCKID CLOCK_MONOTONIC | |
| 31 | ||
| 32 | /* | |
| 33 | * Handle timer teardown race wrt memory free of private data by sessiond | |
| 34 | * signals are handled by a single thread, which permits a synchronization | |
| 35 | * point between handling of each signal. Internal lock ensures mutual | |
| 36 | * exclusion. | |
| 37 | */ | |
| 38 | struct timer_signal_data { | |
| 39 | /* Thread managing signals. */ | |
| 40 | pthread_t tid; | |
| 41 | int qs_done; | |
| 42 | pthread_mutex_t lock; | |
| 43 | }; | |
| 44 | ||
| 45 | struct timer_thread_parameters { | |
| 46 | struct rotation_thread_timer_queue *rotation_timer_queue; | |
| 47 | }; | |
| 48 | ||
| 49 | struct sessiond_rotation_timer { | |
| 50 | uint64_t session_id; | |
| 51 | unsigned int signal; | |
| 52 | /* List member in struct rotation_thread_timer_queue. */ | |
| 53 | struct cds_list_head head; | |
| 54 | }; | |
| 55 | ||
| 56 | void *sessiond_timer_thread(void *data); | |
| 57 | int sessiond_timer_signal_init(void); | |
| 58 | ||
| 259c2674 JD |
59 | int sessiond_timer_rotate_pending_start(struct ltt_session *session, |
| 60 | unsigned int interval_us); | |
| 61 | int sessiond_timer_rotate_pending_stop(struct ltt_session *session); | |
| 62 | ||
| 63 | int sessiond_rotate_timer_start(struct ltt_session *session, | |
| 64 | unsigned int interval_us); | |
| 65 | int sessiond_rotate_timer_stop(struct ltt_session *session); | |
| d88744a4 | 66 | |
| d086f507 | 67 | #endif /* SESSIOND_TIMER_H */ |