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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> | |
3bd1e081 MD |
24 | #include <errno.h> |
25 | ||
10a8a223 DG |
26 | #include <common/consumer.h> |
27 | ||
74d0b642 | 28 | #ifdef HAVE_LIBLTTNG_UST_CTL |
3bd1e081 MD |
29 | |
30 | /* | |
31 | * Mmap the ring buffer, read it and write the data to the tracefile. | |
32 | * | |
33 | * Returns the number of bytes written. | |
34 | */ | |
35 | extern int lttng_ustconsumer_on_read_subbuffer_mmap( | |
36 | struct lttng_consumer_local_data *ctx, | |
37 | struct lttng_consumer_stream *stream, unsigned long len); | |
38 | ||
39 | /* Not implemented */ | |
40 | extern int lttng_ustconsumer_on_read_subbuffer_splice( | |
41 | struct lttng_consumer_local_data *ctx, | |
42 | struct lttng_consumer_stream *stream, unsigned long len); | |
43 | ||
44 | /* | |
45 | * Take a snapshot for a specific fd | |
46 | * | |
47 | * Returns 0 on success, < 0 on error | |
48 | */ | |
49 | int lttng_ustconsumer_take_snapshot(struct lttng_consumer_local_data *ctx, | |
50 | struct lttng_consumer_stream *stream); | |
51 | ||
52 | /* | |
53 | * Get the produced position | |
54 | * | |
55 | * Returns 0 on success, < 0 on error | |
56 | */ | |
57 | int lttng_ustconsumer_get_produced_snapshot( | |
58 | struct lttng_consumer_local_data *ctx, | |
59 | struct lttng_consumer_stream *stream, | |
60 | unsigned long *pos); | |
61 | ||
62 | int lttng_ustconsumer_recv_cmd(struct lttng_consumer_local_data *ctx, | |
63 | int sock, struct pollfd *consumer_sockpoll); | |
64 | ||
65 | extern int lttng_ustconsumer_allocate_channel(struct lttng_consumer_channel *chan); | |
66 | extern void lttng_ustconsumer_del_channel(struct lttng_consumer_channel *chan); | |
67 | extern int lttng_ustconsumer_allocate_stream(struct lttng_consumer_stream *stream); | |
68 | extern void lttng_ustconsumer_del_stream(struct lttng_consumer_stream *stream); | |
69 | ||
d41f73b7 MD |
70 | int lttng_ustconsumer_read_subbuffer(struct lttng_consumer_stream *stream, |
71 | struct lttng_consumer_local_data *ctx); | |
72 | int lttng_ustconsumer_on_recv_stream(struct lttng_consumer_stream *stream); | |
73 | ||
d056b477 MD |
74 | void lttng_ustconsumer_on_stream_hangup(struct lttng_consumer_stream *stream); |
75 | ||
74d0b642 | 76 | #else /* HAVE_LIBLTTNG_UST_CTL */ |
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77 | |
78 | static inline | |
79 | int lttng_ustconsumer_on_read_subbuffer_mmap( | |
80 | struct lttng_consumer_local_data *ctx, | |
81 | struct lttng_consumer_stream *stream, unsigned long len) | |
82 | { | |
83 | return -ENOSYS; | |
84 | } | |
85 | ||
86 | static inline | |
87 | int lttng_ustconsumer_on_read_subbuffer_splice( | |
88 | struct lttng_consumer_local_data *ctx, | |
89 | struct lttng_consumer_stream *uststream, unsigned long len) | |
90 | { | |
91 | return -ENOSYS; | |
92 | } | |
93 | ||
94 | static inline | |
95 | int lttng_ustconsumer_take_snapshot(struct lttng_consumer_local_data *ctx, | |
96 | struct lttng_consumer_stream *stream) | |
97 | { | |
98 | return -ENOSYS; | |
99 | } | |
100 | ||
101 | static inline | |
102 | int lttng_ustconsumer_get_produced_snapshot( | |
103 | struct lttng_consumer_local_data *ctx, | |
104 | struct lttng_consumer_stream *stream, | |
105 | unsigned long *pos) | |
106 | { | |
107 | return -ENOSYS; | |
108 | } | |
109 | ||
110 | static inline | |
111 | int lttng_ustconsumer_recv_cmd(struct lttng_consumer_local_data *ctx, | |
fbc72522 DG |
112 | int sock, struct pollfd *consumer_sockpoll) |
113 | { | |
114 | return -ENOSYS; | |
115 | } | |
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116 | |
117 | static inline | |
118 | int lttng_ustconsumer_allocate_channel(struct lttng_consumer_channel *chan) | |
119 | { | |
120 | return -ENOSYS; | |
121 | } | |
122 | ||
123 | static inline | |
124 | void lttng_ustconsumer_del_channel(struct lttng_consumer_channel *chan) | |
125 | { | |
126 | } | |
127 | ||
128 | static inline | |
129 | int lttng_ustconsumer_allocate_stream(struct lttng_consumer_stream *stream) | |
130 | { | |
131 | return -ENOSYS; | |
132 | } | |
133 | ||
134 | static inline | |
135 | void lttng_ustconsumer_del_stream(struct lttng_consumer_stream *stream) | |
136 | { | |
137 | } | |
138 | ||
d41f73b7 MD |
139 | static inline |
140 | int lttng_ustconsumer_read_subbuffer(struct lttng_consumer_stream *stream, | |
141 | struct lttng_consumer_local_data *ctx) | |
142 | { | |
143 | return -ENOSYS; | |
144 | } | |
145 | ||
146 | static inline | |
147 | int lttng_ustconsumer_on_recv_stream(struct lttng_consumer_stream *stream) | |
148 | { | |
149 | return -ENOSYS; | |
150 | } | |
151 | ||
d056b477 MD |
152 | static inline |
153 | void lttng_ustconsumer_on_stream_hangup(struct lttng_consumer_stream *stream) | |
154 | { | |
155 | } | |
156 | ||
74d0b642 | 157 | #endif /* HAVE_LIBLTTNG_UST_CTL */ |
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158 | |
159 | #endif /* _LTTNG_USTCONSUMER_H */ |