projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| db66e574 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 it | |
| 5 | * under the terms of the GNU General Public License, version 2 only, as | |
| 6 | * 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 with | |
| 14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
| 15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 16 | */ | |
| 17 | ||
| 18 | #ifndef ROTATION_THREAD_H | |
| 19 | #define ROTATION_THREAD_H | |
| 20 | ||
| 21 | #include <urcu/list.h> | |
| 22 | #include <urcu.h> | |
| 23 | #include <urcu/rculfhash.h> | |
| 24 | #include <lttng/domain.h> | |
| 25 | #include <common/pipe.h> | |
| 26 | #include <common/compat/poll.h> | |
| 27 | #include <common/hashtable/hashtable.h> | |
| 28 | #include <pthread.h> | |
| 90936dcf | 29 | #include <semaphore.h> |
| db66e574 JD |
30 | #include "session.h" |
| 31 | ||
| d086f507 JD |
32 | /* |
| 33 | * The timer thread enqueues struct sessiond_rotation_timer objects in the list | |
| 34 | * and wake up the rotation thread. When the rotation thread wakes up, it | |
| 35 | * empties the queue. | |
| 36 | */ | |
| 37 | struct rotation_thread_timer_queue { | |
| 38 | struct lttng_pipe *event_pipe; | |
| 39 | struct cds_list_head list; | |
| 40 | pthread_mutex_t lock; | |
| 41 | }; | |
| 42 | ||
| db66e574 JD |
43 | struct rotation_thread_handle { |
| 44 | /* | |
| 45 | * Read side of pipes used to communicate with the rotation thread. | |
| 46 | */ | |
| 47 | /* Notification from the consumers */ | |
| 48 | int ust32_consumer; | |
| 49 | int ust64_consumer; | |
| 50 | int kernel_consumer; | |
| 51 | /* quit pipe */ | |
| 52 | int thread_quit_pipe; | |
| 90936dcf | 53 | |
| d086f507 | 54 | struct rotation_thread_timer_queue *rotation_timer_queue; |
| 90936dcf JD |
55 | |
| 56 | /* Access to the notification thread cmd_queue */ | |
| 57 | struct notification_thread_handle *notification_thread_handle; | |
| 58 | ||
| 59 | sem_t *notification_thread_ready; | |
| db66e574 JD |
60 | }; |
| 61 | ||
| 62 | struct rotation_thread_handle *rotation_thread_handle_create( | |
| 63 | struct lttng_pipe *ust32_channel_rotate_pipe, | |
| 64 | struct lttng_pipe *ust64_channel_rotate_pipe, | |
| 65 | struct lttng_pipe *kernel_channel_rotate_pipe, | |
| d086f507 | 66 | int thread_quit_pipe, |
| 90936dcf JD |
67 | struct rotation_thread_timer_queue *rotation_timer_queue, |
| 68 | struct notification_thread_handle *notification_thread_handle, | |
| 69 | sem_t *notification_thread_ready); | |
| db66e574 JD |
70 | |
| 71 | void rotation_thread_handle_destroy( | |
| 72 | struct rotation_thread_handle *handle); | |
| 73 | ||
| 74 | void *thread_rotation(void *data); | |
| 75 | ||
| 76 | #endif /* ROTATION_THREAD_H */ |