2 * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
3 * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
4 * Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
6 * SPDX-License-Identifier: GPL-2.0-only
10 #ifndef CONSUMER_TIMER_H
11 #define CONSUMER_TIMER_H
17 #define LTTNG_CONSUMER_SIG_SWITCH SIGRTMIN + 10
18 #define LTTNG_CONSUMER_SIG_TEARDOWN SIGRTMIN + 11
19 #define LTTNG_CONSUMER_SIG_LIVE SIGRTMIN + 12
20 #define LTTNG_CONSUMER_SIG_MONITOR SIGRTMIN + 13
21 #define LTTNG_CONSUMER_SIG_EXIT SIGRTMIN + 14
23 #define CLOCKID CLOCK_MONOTONIC
26 * Handle timer teardown race wrt memory free of private data by consumer
27 * signals are handled by a single thread, which permits a synchronization
28 * point between handling of each signal. Internal lock ensures mutual
31 struct timer_signal_data
{
32 pthread_t tid
; /* thread id managing signals */
38 void consumer_timer_switch_start(struct lttng_consumer_channel
*channel
,
39 unsigned int switch_timer_interval_us
);
40 void consumer_timer_switch_stop(struct lttng_consumer_channel
*channel
);
41 void consumer_timer_live_start(struct lttng_consumer_channel
*channel
,
42 unsigned int live_timer_interval_us
);
43 void consumer_timer_live_stop(struct lttng_consumer_channel
*channel
);
44 int consumer_timer_monitor_start(struct lttng_consumer_channel
*channel
,
45 unsigned int monitor_timer_interval_us
);
46 int consumer_timer_monitor_stop(struct lttng_consumer_channel
*channel
);
47 void *consumer_timer_thread(void *data
);
48 int consumer_signal_init(void);
50 int consumer_flush_kernel_index(struct lttng_consumer_stream
*stream
);
51 int consumer_flush_ust_index(struct lttng_consumer_stream
*stream
);
53 int consumer_timer_thread_get_channel_monitor_pipe(void);
54 int consumer_timer_thread_set_channel_monitor_pipe(int fd
);
56 #endif /* CONSUMER_TIMER_H */