Cleanup libkernelctl API
[lttng-tools.git] / libkernelctl / libkernelctl.h
1 /*
2 * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
3 * 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 _LTT_LIBKERNELCTL_H
21 #define _LTT_LIBKERNELCTL_H
22
23 #include <lttng/lttng.h>
24
25 #include "lttng-kernel.h"
26
27 int kernctl_create_session(int fd);
28 int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops);
29 int kernctl_create_channel(int fd, struct lttng_channel_attr *chops);
30 int kernctl_create_stream(int fd);
31 int kernctl_create_event(int fd, struct lttng_kernel_event *ev);
32 int kernctl_add_context(int fd, struct lttng_kernel_context *ctx);
33
34 int kernctl_enable(int fd);
35 int kernctl_disable(int fd);
36 int kernctl_start_session(int fd);
37 int kernctl_stop_session(int fd);
38
39 int kernctl_tracepoint_list(int fd);
40 int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v);
41 int kernctl_wait_quiescent(int fd);
42 int kernctl_calibrate(int fd, struct lttng_kernel_calibrate *calibrate);
43
44
45 /* Buffer operations */
46
47 /* For mmap mode, readable without "get" operation */
48 int kernctl_get_mmap_len(int fd, unsigned long *len);
49 int kernctl_get_max_subbuf_size(int fd, unsigned long *len);
50
51 /*
52 * For mmap mode, operate on the current packet (between get/put or
53 * get_next/put_next).
54 */
55 int kernctl_get_mmap_read_offset(int fd, unsigned long *len);
56 int kernctl_get_subbuf_size(int fd, unsigned long *len);
57 int kernctl_get_padded_subbuf_size(int fd, unsigned long *len);
58
59 int kernctl_get_next_subbuf(int fd);
60 int kernctl_put_next_subbuf(int fd);
61
62 /* snapshot */
63 int kernctl_snapshot(int fd);
64 int kernctl_snapshot_get_consumed(int fd, unsigned long *pos);
65 int kernctl_snapshot_get_produced(int fd, unsigned long *pos);
66 int kernctl_get_subbuf(int fd, unsigned long *pos);
67 int kernctl_put_subbuf(int fd);
68
69 int kernctl_buffer_flush(int fd);
70
71 #endif /* _LTT_LIBKERNELCTL_H */
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