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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 | ||
74d0b642 | 27 | #ifdef HAVE_LIBLTTNG_UST_CTL |
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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 | ||
74d0b642 | 69 | #else /* HAVE_LIBLTTNG_UST_CTL */ |
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70 | |
71 | static inline | |
72 | int lttng_ustconsumer_on_read_subbuffer_mmap( | |
73 | struct lttng_consumer_local_data *ctx, | |
74 | struct lttng_consumer_stream *stream, unsigned long len) | |
75 | { | |
76 | return -ENOSYS; | |
77 | } | |
78 | ||
79 | static inline | |
80 | int lttng_ustconsumer_on_read_subbuffer_splice( | |
81 | struct lttng_consumer_local_data *ctx, | |
82 | struct lttng_consumer_stream *uststream, unsigned long len) | |
83 | { | |
84 | return -ENOSYS; | |
85 | } | |
86 | ||
87 | static inline | |
88 | int lttng_ustconsumer_take_snapshot(struct lttng_consumer_local_data *ctx, | |
89 | struct lttng_consumer_stream *stream) | |
90 | { | |
91 | return -ENOSYS; | |
92 | } | |
93 | ||
94 | static inline | |
95 | int lttng_ustconsumer_get_produced_snapshot( | |
96 | struct lttng_consumer_local_data *ctx, | |
97 | struct lttng_consumer_stream *stream, | |
98 | unsigned long *pos) | |
99 | { | |
100 | return -ENOSYS; | |
101 | } | |
102 | ||
103 | static inline | |
104 | int lttng_ustconsumer_recv_cmd(struct lttng_consumer_local_data *ctx, | |
fbc72522 DG |
105 | int sock, struct pollfd *consumer_sockpoll) |
106 | { | |
107 | return -ENOSYS; | |
108 | } | |
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109 | |
110 | static inline | |
111 | int lttng_ustconsumer_allocate_channel(struct lttng_consumer_channel *chan) | |
112 | { | |
113 | return -ENOSYS; | |
114 | } | |
115 | ||
116 | static inline | |
117 | void lttng_ustconsumer_del_channel(struct lttng_consumer_channel *chan) | |
118 | { | |
119 | } | |
120 | ||
121 | static inline | |
122 | int lttng_ustconsumer_allocate_stream(struct lttng_consumer_stream *stream) | |
123 | { | |
124 | return -ENOSYS; | |
125 | } | |
126 | ||
127 | static inline | |
128 | void lttng_ustconsumer_del_stream(struct lttng_consumer_stream *stream) | |
129 | { | |
130 | } | |
131 | ||
74d0b642 | 132 | #endif /* HAVE_LIBLTTNG_UST_CTL */ |
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133 | |
134 | #endif /* _LTTNG_USTCONSUMER_H */ |