Markers: API change: rename trace_mark() to ust_marker()
[ust.git] / tests / dlopen / dlopen.c
1 /* Copyright (C) 2010 Oussama El Mfadli, Alexis Hallé
2 *
3 * This library is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Lesser General Public
5 * License as published by the Free Software Foundation; either
6 * version 2.1 of the License, or (at your option) any later version.
7 *
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Lesser General Public License for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public
14 * License along with this library; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16 */
17
18 /* The aim of this test is to verify whether ust behaves correctly when
19 * tracing a marker that is in a dlopen()'d library. It also checks the
20 * library can be unloaded.
21 */
22
23 #include <dlfcn.h>
24 #include <stdio.h>
25 #include <ust/marker.h>
26
27 int main()
28 {
29 int (*fptr)();
30
31 ust_marker(from_main_before_lib, "%s", "Event occured in the main program before"
32 " the opening of the library\n");
33 void *lib_handle = dlopen("libdummy.so", RTLD_LAZY);
34
35 if (lib_handle == NULL) {
36 fprintf(stderr, "%s\n", dlerror());
37 return 1;
38 }
39
40 fptr = (int (*)())dlsym(lib_handle, "exported_function");
41
42 if ( fptr == NULL) {
43 fprintf(stderr, "%s\n", dlerror());
44 return 1;
45 }
46
47 (*fptr)();
48 dlclose(lib_handle);
49
50 ust_marker(from_main_after_lib,"%s", "Event occured in the main program after "
51 "the library has been closed\n");
52
53 return 0;
54 }
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