4357380a60965855d36fe199d9cf7c68eb446e5b
[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 int lttng_ustconsumer_get_consumed_snapshot(
34 struct lttng_consumer_stream *stream, unsigned long *pos);
35
36 int lttng_ustconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
37 int sock, struct pollfd *consumer_sockpoll);
38
39 extern int lttng_ustconsumer_allocate_channel(struct lttng_consumer_channel *chan);
40 extern void lttng_ustconsumer_del_channel(struct lttng_consumer_channel *chan);
41 extern int lttng_ustconsumer_add_stream(struct lttng_consumer_stream *stream);
42 extern void lttng_ustconsumer_del_stream(struct lttng_consumer_stream *stream);
43
44 int lttng_ustconsumer_read_subbuffer(struct lttng_consumer_stream *stream,
45 struct lttng_consumer_local_data *ctx);
46 int lttng_ustconsumer_on_recv_stream(struct lttng_consumer_stream *stream);
47
48 void lttng_ustconsumer_on_stream_hangup(struct lttng_consumer_stream *stream);
49
50 int lttng_ustctl_get_mmap_read_offset(struct lttng_consumer_stream *stream,
51 unsigned long *off);
52 void *lttng_ustctl_get_mmap_base(struct lttng_consumer_stream *stream);
53 int lttng_ustconsumer_get_stream_id(struct lttng_consumer_stream *stream,
54 uint64_t *stream_id);
55 int lttng_ustconsumer_data_pending(struct lttng_consumer_stream *stream);
56 void lttng_ustconsumer_close_all_metadata(struct lttng_ht *ht);
57 void lttng_ustconsumer_close_metadata(struct lttng_consumer_channel *metadata);
58 void lttng_ustconsumer_close_stream_wakeup(struct lttng_consumer_stream *stream);
59 int lttng_ustconsumer_recv_metadata(int sock, uint64_t key, uint64_t offset,
60 uint64_t len, struct lttng_consumer_channel *channel,
61 int timer, int wait);
62 int lttng_ustconsumer_request_metadata(struct lttng_consumer_local_data *ctx,
63 struct lttng_consumer_channel *channel, int timer, int wait);
64 int lttng_ustconsumer_sync_metadata(struct lttng_consumer_local_data *ctx,
65 struct lttng_consumer_stream *metadata);
66 void lttng_ustconsumer_flush_buffer(struct lttng_consumer_stream *stream,
67 int producer);
68 int lttng_ustconsumer_get_current_timestamp(
69 struct lttng_consumer_stream *stream, uint64_t *ts);
70
71 #else /* HAVE_LIBLTTNG_UST_CTL */
72
73 static inline
74 ssize_t lttng_ustconsumer_on_read_subbuffer_mmap(
75 struct lttng_consumer_local_data *ctx,
76 struct lttng_consumer_stream *stream, unsigned long len,
77 unsigned long padding)
78 {
79 return -ENOSYS;
80 }
81
82 static inline
83 ssize_t lttng_ustconsumer_on_read_subbuffer_splice(
84 struct lttng_consumer_local_data *ctx,
85 struct lttng_consumer_stream *uststream, unsigned long len,
86 unsigned long padding)
87 {
88 return -ENOSYS;
89 }
90
91 static inline
92 int lttng_ustconsumer_take_snapshot(struct lttng_consumer_stream *stream)
93 {
94 return -ENOSYS;
95 }
96
97 static inline
98 int lttng_ustconsumer_get_produced_snapshot(
99 struct lttng_consumer_stream *stream, unsigned long *pos)
100 {
101 return -ENOSYS;
102 }
103
104 static inline
105 int lttng_ustconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
106 int sock, struct pollfd *consumer_sockpoll)
107 {
108 return -ENOSYS;
109 }
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_add_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 static inline
134 int lttng_ustconsumer_read_subbuffer(struct lttng_consumer_stream *stream,
135 struct lttng_consumer_local_data *ctx)
136 {
137 return -ENOSYS;
138 }
139
140 static inline
141 int lttng_ustconsumer_on_recv_stream(struct lttng_consumer_stream *stream)
142 {
143 return -ENOSYS;
144 }
145
146 static inline
147 void lttng_ustconsumer_on_stream_hangup(struct lttng_consumer_stream *stream)
148 {
149 }
150
151 static inline
152 int lttng_ustctl_get_mmap_read_offset(struct lttng_consumer_stream *stream,
153 unsigned long *off)
154 {
155 return -ENOSYS;
156 }
157 static inline
158 int lttng_ustconsumer_data_pending(struct lttng_consumer_stream *stream)
159 {
160 return -ENOSYS;
161 }
162 static inline
163 void *lttng_ustctl_get_mmap_base(struct lttng_consumer_stream *stream)
164 {
165 return NULL;
166 }
167 static inline
168 void lttng_ustconsumer_close_all_metadata(struct lttng_ht *ht)
169 {
170 }
171 static inline
172 void lttng_ustconsumer_close_metadata(struct lttng_consumer_channel *metadata)
173 {
174 }
175 static inline
176 void lttng_ustconsumer_close_stream_wakeup(struct lttng_consumer_stream *stream)
177 {
178 }
179 static inline
180 int lttng_ustconsumer_recv_metadata(int sock, uint64_t key, uint64_t offset,
181 uint64_t len, struct lttng_consumer_channel *channel,
182 int timer)
183 {
184 return -ENOSYS;
185 }
186 static inline
187 int lttng_ustconsumer_request_metadata(struct lttng_consumer_local_data *ctx,
188 struct lttng_consumer_channel *channel, int timer, int wait)
189 {
190 return -ENOSYS;
191 }
192 static inline
193 int lttng_ustconsumer_sync_metadata(struct lttng_consumer_local_data *ctx,
194 struct lttng_consumer_stream *metadata)
195 {
196 return -ENOSYS;
197 }
198 static inline
199 void lttng_ustconsumer_flush_buffer(struct lttng_consumer_stream *stream,
200 int producer)
201 {
202 }
203 static inline
204 int lttng_ustconsumer_get_current_timestamp(
205 struct lttng_consumer_stream *stream, uint64_t *ts)
206 {
207 return -ENOSYS;
208 }
209 static inline
210 int lttng_ustconsumer_get_stream_id(struct lttng_consumer_stream *stream,
211 uint64_t *stream_id)
212 {
213 return -ENOSYS;
214 }
215 #endif /* HAVE_LIBLTTNG_UST_CTL */
216
217 #endif /* _LTTNG_USTCONSUMER_H */
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