Consumer daemon data available command support
[lttng-tools.git] / src / common / kernel-consumer / kernel-consumer.h
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1/*
2 * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
3 * Copyright (C) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
4 *
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5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License, version 2 only,
7 * as published by the Free Software Foundation.
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8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
d14d33bf 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 * GNU General Public License for more details.
13 *
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14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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17 */
18
19#ifndef _LTTNG_KCONSUMER_H
20#define _LTTNG_KCONSUMER_H
21
10a8a223 22#include <common/consumer.h>
3bd1e081 23
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24/*
25 * Take a snapshot for a specific fd
26 *
27 * Returns 0 on success, < 0 on error
28 */
29int lttng_kconsumer_take_snapshot(struct lttng_consumer_local_data *ctx,
30 struct lttng_consumer_stream *stream);
31
32/*
33 * Get the produced position
34 *
35 * Returns 0 on success, < 0 on error
36 */
37int lttng_kconsumer_get_produced_snapshot(
38 struct lttng_consumer_local_data *ctx,
39 struct lttng_consumer_stream *stream,
40 unsigned long *pos);
41
42int lttng_kconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
43 int sock, struct pollfd *consumer_sockpoll);
44
d41f73b7 45
4078b776 46ssize_t lttng_kconsumer_read_subbuffer(struct lttng_consumer_stream *stream,
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47 struct lttng_consumer_local_data *ctx);
48int lttng_kconsumer_on_recv_stream(struct lttng_consumer_stream *stream);
ca22feea 49int lttng_kconsumer_data_available(struct lttng_consumer_stream *stream);
d41f73b7 50
3bd1e081 51#endif /* _LTTNG_KCONSUMER_H */
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