Version 2.0.6
[lttng-ust.git] / liblttng-ust / ltt-tracer.h
1 #ifndef _LTT_TRACER_H
2 #define _LTT_TRACER_H
3
4 /*
5 * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
6 *
7 * This contains the definitions for the Linux Trace Toolkit tracer.
8 *
9 * Ported to userspace by Pierre-Marc Fournier.
10 *
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; version 2.1 of
14 * the License.
15 *
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with this library; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26 #include <stdarg.h>
27 #include <stdint.h>
28 #include <lttng/ust-events.h>
29 #include "ltt-tracer-core.h"
30 #include "compat.h"
31
32 /* Number of bytes to log with a read/write event */
33 #define LTT_LOG_RW_SIZE 32L
34 #define LTT_MAX_SMALL_SIZE 0xFFFFU
35
36 /* Tracer properties */
37 #define CTF_MAGIC_NUMBER 0xC1FC1FC1
38 #define TSDL_MAGIC_NUMBER 0x75D11D57
39
40 /* CTF specification version followed */
41 #define CTF_SPEC_MAJOR 1
42 #define CTF_SPEC_MINOR 8
43
44 /*
45 * Number of milliseconds to retry before failing metadata writes on buffer full
46 * condition. (10 seconds)
47 */
48 #define LTTNG_METADATA_TIMEOUT_MSEC 10000
49
50 #define LTT_RFLAG_EXTENDED RING_BUFFER_RFLAG_END
51 #define LTT_RFLAG_END (LTT_RFLAG_EXTENDED << 1)
52
53 #endif /* _LTT_TRACER_H */
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