projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| 331744e3 JD |
1 | /* |
| 2 | * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca> | |
| 3 | * Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 4 | * 2012 - David Goulet <dgoulet@efficios.com> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License, version 2 only, | |
| 8 | * as published by the Free Software Foundation. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
| 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 13 | * more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU General Public License along | |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., | |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 | */ | |
| 19 | ||
| 20 | #ifndef CONSUMER_TIMER_H | |
| 21 | #define CONSUMER_TIMER_H | |
| 22 | ||
| 23 | #include <pthread.h> | |
| 24 | ||
| 25 | #include "consumer.h" | |
| 26 | ||
| 27 | #define LTTNG_CONSUMER_SIG_SWITCH SIGRTMIN + 10 | |
| 28 | #define LTTNG_CONSUMER_SIG_TEARDOWN SIGRTMIN + 11 | |
| 29 | ||
| 30 | #define CLOCKID CLOCK_MONOTONIC | |
| 31 | ||
| 32 | /* | |
| 33 | * Handle timer teardown race wrt memory free of private data by consumer | |
| 34 | * signals are handled by a single thread, which permits a synchronization | |
| 2b8f8754 MD |
35 | * point between handling of each signal. Internal lock ensures mutual |
| 36 | * exclusion. | |
| 331744e3 JD |
37 | */ |
| 38 | struct timer_signal_data { | |
| 39 | pthread_t tid; /* thread id managing signals */ | |
| 40 | int setup_done; | |
| 41 | int qs_done; | |
| 2b8f8754 | 42 | pthread_mutex_t lock; |
| 331744e3 JD |
43 | }; |
| 44 | ||
| 45 | void consumer_timer_switch_start(struct lttng_consumer_channel *channel, | |
| 46 | unsigned int switch_timer_interval); | |
| 47 | void consumer_timer_switch_stop(struct lttng_consumer_channel *channel); | |
| 48 | void *consumer_timer_metadata_thread(void *data); | |
| 49 | void consumer_signal_init(void); | |
| 50 | ||
| 51 | #endif /* CONSUMER_TIMER_H */ |