bbaff6cbf4dbcd3c667477b363f1feb1bcd2914b
[lttng-tools.git] / src / common / ust-consumer / ust-consumer.h
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 modify
6 * it under the terms of the GNU General Public License, version 2 only,
7 * as published by the Free Software Foundation.
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
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
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.
17 */
18
19 #ifndef _LTTNG_USTCONSUMER_H
20 #define _LTTNG_USTCONSUMER_H
21
22 #include <config.h>
23 #include <errno.h>
24
25 #include <common/consumer.h>
26
27 #ifdef HAVE_LIBLTTNG_UST_CTL
28
29 int lttng_ustconsumer_take_snapshot(struct lttng_consumer_stream *stream);
30
31 int lttng_ustconsumer_get_produced_snapshot(
32 struct lttng_consumer_stream *stream, unsigned long *pos);
33
34 int lttng_ustconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
35 int sock, struct pollfd *consumer_sockpoll);
36
37 extern int lttng_ustconsumer_allocate_channel(struct lttng_consumer_channel *chan);
38 extern void lttng_ustconsumer_del_channel(struct lttng_consumer_channel *chan);
39 extern int lttng_ustconsumer_add_stream(struct lttng_consumer_stream *stream);
40 extern void lttng_ustconsumer_del_stream(struct lttng_consumer_stream *stream);
41
42 int lttng_ustconsumer_read_subbuffer(struct lttng_consumer_stream *stream,
43 struct lttng_consumer_local_data *ctx);
44 int lttng_ustconsumer_on_recv_stream(struct lttng_consumer_stream *stream);
45
46 void lttng_ustconsumer_on_stream_hangup(struct lttng_consumer_stream *stream);
47
48 int lttng_ustctl_get_mmap_read_offset(struct lttng_consumer_stream *stream,
49 unsigned long *off);
50 void *lttng_ustctl_get_mmap_base(struct lttng_consumer_stream *stream);
51 int lttng_ustconsumer_data_pending(struct lttng_consumer_stream *stream);
52 void lttng_ustconsumer_close_metadata(struct lttng_ht *ht);
53 void lttng_ustconsumer_close_stream_wakeup(struct lttng_consumer_stream *stream);
54
55 #else /* HAVE_LIBLTTNG_UST_CTL */
56
57 static inline
58 ssize_t lttng_ustconsumer_on_read_subbuffer_mmap(
59 struct lttng_consumer_local_data *ctx,
60 struct lttng_consumer_stream *stream, unsigned long len,
61 unsigned long padding)
62 {
63 return -ENOSYS;
64 }
65
66 static inline
67 ssize_t lttng_ustconsumer_on_read_subbuffer_splice(
68 struct lttng_consumer_local_data *ctx,
69 struct lttng_consumer_stream *uststream, unsigned long len,
70 unsigned long padding)
71 {
72 return -ENOSYS;
73 }
74
75 static inline
76 int lttng_ustconsumer_take_snapshot(struct lttng_consumer_stream *stream)
77 {
78 return -ENOSYS;
79 }
80
81 static inline
82 int lttng_ustconsumer_get_produced_snapshot(
83 struct lttng_consumer_stream *stream, unsigned long *pos)
84 {
85 return -ENOSYS;
86 }
87
88 static inline
89 int lttng_ustconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
90 int sock, struct pollfd *consumer_sockpoll)
91 {
92 return -ENOSYS;
93 }
94
95 static inline
96 int lttng_ustconsumer_allocate_channel(struct lttng_consumer_channel *chan)
97 {
98 return -ENOSYS;
99 }
100
101 static inline
102 void lttng_ustconsumer_del_channel(struct lttng_consumer_channel *chan)
103 {
104 }
105
106 static inline
107 int lttng_ustconsumer_add_stream(struct lttng_consumer_stream *stream)
108 {
109 return -ENOSYS;
110 }
111
112 static inline
113 void lttng_ustconsumer_del_stream(struct lttng_consumer_stream *stream)
114 {
115 }
116
117 static inline
118 int lttng_ustconsumer_read_subbuffer(struct lttng_consumer_stream *stream,
119 struct lttng_consumer_local_data *ctx)
120 {
121 return -ENOSYS;
122 }
123
124 static inline
125 int lttng_ustconsumer_on_recv_stream(struct lttng_consumer_stream *stream)
126 {
127 return -ENOSYS;
128 }
129
130 static inline
131 void lttng_ustconsumer_on_stream_hangup(struct lttng_consumer_stream *stream)
132 {
133 }
134
135 static inline
136 int lttng_ustctl_get_mmap_read_offset(struct lttng_consumer_stream *stream,
137 unsigned long *off)
138 {
139 return -ENOSYS;
140 }
141 static inline
142 int lttng_ustconsumer_data_pending(struct lttng_consumer_stream *stream)
143 {
144 return -ENOSYS;
145 }
146 static inline
147 void *lttng_ustctl_get_mmap_base(struct lttng_consumer_stream *stream)
148 {
149 return NULL;
150 }
151 static inline
152 void lttng_ustconsumer_close_metadata(struct lttng_ht *ht)
153 {
154 }
155 static inline
156 void lttng_ustconsumer_close_stream_wakeup(struct lttng_consumer_stream *stream)
157 {
158 }
159 #endif /* HAVE_LIBLTTNG_UST_CTL */
160
161 #endif /* _LTTNG_USTCONSUMER_H */
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