2 * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
3 * Copyright (C) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; only version 2
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 #ifndef _LTTNG_USTCONSUMER_H
21 #define _LTTNG_USTCONSUMER_H
24 #include <lttng/lttng-consumer.h>
27 #ifdef CONFIG_LTTNG_TOOLS_HAVE_UST
30 * Mmap the ring buffer, read it and write the data to the tracefile.
32 * Returns the number of bytes written.
34 extern int lttng_ustconsumer_on_read_subbuffer_mmap(
35 struct lttng_consumer_local_data
*ctx
,
36 struct lttng_consumer_stream
*stream
, unsigned long len
);
39 extern int lttng_ustconsumer_on_read_subbuffer_splice(
40 struct lttng_consumer_local_data
*ctx
,
41 struct lttng_consumer_stream
*stream
, unsigned long len
);
44 * Take a snapshot for a specific fd
46 * Returns 0 on success, < 0 on error
48 int lttng_ustconsumer_take_snapshot(struct lttng_consumer_local_data
*ctx
,
49 struct lttng_consumer_stream
*stream
);
52 * Get the produced position
54 * Returns 0 on success, < 0 on error
56 int lttng_ustconsumer_get_produced_snapshot(
57 struct lttng_consumer_local_data
*ctx
,
58 struct lttng_consumer_stream
*stream
,
61 int lttng_ustconsumer_recv_cmd(struct lttng_consumer_local_data
*ctx
,
62 int sock
, struct pollfd
*consumer_sockpoll
);
64 extern int lttng_ustconsumer_allocate_channel(struct lttng_consumer_channel
*chan
);
65 extern void lttng_ustconsumer_del_channel(struct lttng_consumer_channel
*chan
);
66 extern int lttng_ustconsumer_allocate_stream(struct lttng_consumer_stream
*stream
);
67 extern void lttng_ustconsumer_del_stream(struct lttng_consumer_stream
*stream
);
70 #else /* CONFIG_LTTNG_TOOLS_HAVE_UST */
73 int lttng_ustconsumer_on_read_subbuffer_mmap(
74 struct lttng_consumer_local_data
*ctx
,
75 struct lttng_consumer_stream
*stream
, unsigned long len
)
81 int lttng_ustconsumer_on_read_subbuffer_splice(
82 struct lttng_consumer_local_data
*ctx
,
83 struct lttng_consumer_stream
*uststream
, unsigned long len
)
89 int lttng_ustconsumer_take_snapshot(struct lttng_consumer_local_data
*ctx
,
90 struct lttng_consumer_stream
*stream
)
96 int lttng_ustconsumer_get_produced_snapshot(
97 struct lttng_consumer_local_data
*ctx
,
98 struct lttng_consumer_stream
*stream
,
105 int lttng_ustconsumer_recv_cmd(struct lttng_consumer_local_data
*ctx
,
106 int sock
, struct pollfd
*consumer_sockpoll
)
112 int lttng_ustconsumer_allocate_channel(struct lttng_consumer_channel
*chan
)
118 void lttng_ustconsumer_del_channel(struct lttng_consumer_channel
*chan
)
123 int lttng_ustconsumer_allocate_stream(struct lttng_consumer_stream
*stream
)
129 void lttng_ustconsumer_del_stream(struct lttng_consumer_stream
*stream
)
133 #endif /* CONFIG_LTTNG_TOOLS_HAVE_UST */
135 #endif /* _LTTNG_USTCONSUMER_H */