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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 | * | |
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 | |
8 | * of the License. | |
9 | * | |
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. | |
14 | * | |
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. | |
18 | */ | |
19 | ||
20 | #ifndef _LTTNG_USTCONSUMER_H | |
21 | #define _LTTNG_USTCONSUMER_H | |
22 | ||
23 | #include <config.h> | |
24 | #include <lttng/lttng-consumer.h> | |
25 | #include <errno.h> | |
26 | ||
27 | #ifdef CONFIG_LTTNG_TOOLS_HAVE_UST | |
28 | ||
29 | /* | |
30 | * Mmap the ring buffer, read it and write the data to the tracefile. | |
31 | * | |
32 | * Returns the number of bytes written. | |
33 | */ | |
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); | |
37 | ||
38 | /* Not implemented */ | |
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); | |
42 | ||
43 | /* | |
44 | * Take a snapshot for a specific fd | |
45 | * | |
46 | * Returns 0 on success, < 0 on error | |
47 | */ | |
48 | int lttng_ustconsumer_take_snapshot(struct lttng_consumer_local_data *ctx, | |
49 | struct lttng_consumer_stream *stream); | |
50 | ||
51 | /* | |
52 | * Get the produced position | |
53 | * | |
54 | * Returns 0 on success, < 0 on error | |
55 | */ | |
56 | int lttng_ustconsumer_get_produced_snapshot( | |
57 | struct lttng_consumer_local_data *ctx, | |
58 | struct lttng_consumer_stream *stream, | |
59 | unsigned long *pos); | |
60 | ||
61 | int lttng_ustconsumer_recv_cmd(struct lttng_consumer_local_data *ctx, | |
62 | int sock, struct pollfd *consumer_sockpoll); | |
63 | ||
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); | |
68 | ||
69 | ||
70 | #else /* CONFIG_LTTNG_TOOLS_HAVE_UST */ | |
71 | ||
72 | static inline | |
73 | int lttng_ustconsumer_on_read_subbuffer_mmap( | |
74 | struct lttng_consumer_local_data *ctx, | |
75 | struct lttng_consumer_stream *stream, unsigned long len) | |
76 | { | |
77 | return -ENOSYS; | |
78 | } | |
79 | ||
80 | static inline | |
81 | int lttng_ustconsumer_on_read_subbuffer_splice( | |
82 | struct lttng_consumer_local_data *ctx, | |
83 | struct lttng_consumer_stream *uststream, unsigned long len) | |
84 | { | |
85 | return -ENOSYS; | |
86 | } | |
87 | ||
88 | static inline | |
89 | int lttng_ustconsumer_take_snapshot(struct lttng_consumer_local_data *ctx, | |
90 | struct lttng_consumer_stream *stream) | |
91 | { | |
92 | return -ENOSYS; | |
93 | } | |
94 | ||
95 | static inline | |
96 | int lttng_ustconsumer_get_produced_snapshot( | |
97 | struct lttng_consumer_local_data *ctx, | |
98 | struct lttng_consumer_stream *stream, | |
99 | unsigned long *pos) | |
100 | { | |
101 | return -ENOSYS; | |
102 | } | |
103 | ||
104 | static inline | |
105 | int lttng_ustconsumer_recv_cmd(struct lttng_consumer_local_data *ctx, | |
fbc72522 DG |
106 | int sock, struct pollfd *consumer_sockpoll) |
107 | { | |
108 | return -ENOSYS; | |
109 | } | |
3bd1e081 MD |
110 | |
111 | static inline | |
112 | int lttng_ustconsumer_allocate_channel(struct lttng_consumer_channel *chan) | |
113 | { | |
114 | return -ENOSYS; | |
115 | } | |
116 | ||
117 | static inline | |
118 | void lttng_ustconsumer_del_channel(struct lttng_consumer_channel *chan) | |
119 | { | |
120 | } | |
121 | ||
122 | static inline | |
123 | int lttng_ustconsumer_allocate_stream(struct lttng_consumer_stream *stream) | |
124 | { | |
125 | return -ENOSYS; | |
126 | } | |
127 | ||
128 | static inline | |
129 | void lttng_ustconsumer_del_stream(struct lttng_consumer_stream *stream) | |
130 | { | |
131 | } | |
132 | ||
133 | #endif /* CONFIG_LTTNG_TOOLS_HAVE_UST */ | |
134 | ||
135 | #endif /* _LTTNG_USTCONSUMER_H */ |