Implement tracelog API
[lttng-ust.git] / liblttng-ust / tracelog.c
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1/*
2 * Copyright (C) 2013-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23#define _GNU_SOURCE
24#define _LGPL_SOURCE
25#include <stdio.h>
26
27#define TRACEPOINT_CREATE_PROBES
28#define TRACEPOINT_DEFINE
29#include "lttng-ust-tracelog-provider.h"
30
31#define TRACELOG_CB(level) \
32 void _lttng_ust_tracelog_##level(const char *file, \
33 int line, const char *func, \
34 const char *fmt, ...) \
35 { \
36 va_list ap; \
37 char *msg; \
38 int len; \
39 \
40 va_start(ap, fmt); \
41 len = vasprintf(&msg, fmt, ap); \
42 /* len does not include the final \0 */ \
43 if (len < 0) \
44 goto end; \
45 __tracepoint_cb_lttng_ust_tracelog___##level(file, \
46 line, func, msg, len, \
47 __builtin_return_address(0)); \
48 free(msg); \
49 end: \
50 va_end(ap); \
51 }
52
53TRACELOG_CB(emerg)
54TRACELOG_CB(alert)
55TRACELOG_CB(crit)
56TRACELOG_CB(err)
57TRACELOG_CB(warning)
58TRACELOG_CB(notice)
59TRACELOG_CB(info)
60TRACELOG_CB(debug_system)
61TRACELOG_CB(debug_program)
62TRACELOG_CB(debug_process)
63TRACELOG_CB(debug_module)
64TRACELOG_CB(debug_unit)
65TRACELOG_CB(debug_function)
66TRACELOG_CB(debug_line)
67TRACELOG_CB(debug)
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