2 * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
3 * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
4 * 2012 - David Goulet <dgoulet@efficios.com>
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.
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
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.
20 #ifndef CONSUMER_TIMER_H
21 #define CONSUMER_TIMER_H
27 #define LTTNG_CONSUMER_SIG_SWITCH SIGRTMIN + 10
28 #define LTTNG_CONSUMER_SIG_TEARDOWN SIGRTMIN + 11
29 #define LTTNG_CONSUMER_SIG_LIVE SIGRTMIN + 12
30 #define LTTNG_CONSUMER_SIG_MONITOR SIGRTMIN + 13
31 #define LTTNG_CONSUMER_SIG_EXIT SIGRTMIN + 14
33 #define CLOCKID CLOCK_MONOTONIC
36 * Handle timer teardown race wrt memory free of private data by consumer
37 * signals are handled by a single thread, which permits a synchronization
38 * point between handling of each signal. Internal lock ensures mutual
41 struct timer_signal_data
{
42 pthread_t tid
; /* thread id managing signals */
48 void consumer_timer_switch_start(struct lttng_consumer_channel
*channel
,
49 unsigned int switch_timer_interval_us
);
50 void consumer_timer_switch_stop(struct lttng_consumer_channel
*channel
);
51 void consumer_timer_live_start(struct lttng_consumer_channel
*channel
,
52 unsigned int live_timer_interval_us
);
53 void consumer_timer_live_stop(struct lttng_consumer_channel
*channel
);
54 int consumer_timer_monitor_start(struct lttng_consumer_channel
*channel
,
55 unsigned int monitor_timer_interval_us
);
56 int consumer_timer_monitor_stop(struct lttng_consumer_channel
*channel
);
57 void *consumer_timer_thread(void *data
);
58 int consumer_signal_init(void);
60 int consumer_flush_kernel_index(struct lttng_consumer_stream
*stream
);
61 int consumer_flush_ust_index(struct lttng_consumer_stream
*stream
);
63 int consumer_timer_thread_get_channel_monitor_pipe(void);
64 int consumer_timer_thread_set_channel_monitor_pipe(int fd
);
66 #endif /* CONSUMER_TIMER_H */