Implement liblttng-ust-cyg-profile function entry/exit instrumentation
[lttng-ust.git] / liblttng-ust-cyg-profile / lttng-ust-cyg-profile.c
1 /*
2 * Copyright (C) 2011-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library 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 GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #define _GNU_SOURCE
20 #include <dlfcn.h>
21 #include <sys/types.h>
22 #include <stdio.h>
23
24 #define TRACEPOINT_DEFINE
25 #define TRACEPOINT_CREATE_PROBES
26 #include "lttng-ust-cyg-profile.h"
27
28 void __cyg_profile_func_enter(void *this_fn, void *call_site)
29 __attribute__((no_instrument_function));
30
31 void __cyg_profile_func_exit(void *this_fn, void *call_site)
32 __attribute__((no_instrument_function));
33
34 void __cyg_profile_func_enter(void *this_fn, void *call_site)
35 {
36 tracepoint(lttng_ust_cyg_profile, func_entry, this_fn);
37 }
38
39 void __cyg_profile_func_exit(void *this_fn, void *call_site)
40 {
41 tracepoint(lttng_ust_cyg_profile, func_exit);
42 }
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