2 * Copyright (C) - 2012 David Goulet <dgoulet@efficios.com>
4 * This library is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU Lesser General Public License as published by the
6 * Free Software Foundation; version 2.1 of the License.
8 * This library is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this library; if not, write to the Free Software Foundation,
15 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 #include <arpa/inet.h>
28 #include <sys/types.h>
35 #define TRACEPOINT_DEFINE
38 void create_file(const char *path
)
40 static bool file_created
= false;
43 if (!path
|| file_created
) {
47 ret
= creat(path
, S_IRWXU
);
49 fprintf(stderr
, "Failed to create file %s\n", path
);
58 void wait_on_file(const char *path
)
67 ret
= stat(path
, &buf
);
68 if (ret
== -1 && errno
== ENOENT
) {
69 (void) poll(NULL
, 0, 10); /* 10 ms delay */
80 int main(int argc
, char **argv
)
82 unsigned int i
, netint
;
83 long values
[] = { 1, 2, 3 };
84 char text
[10] = "test";
88 useconds_t nr_usec
= 0;
89 char *after_first_event_file_path
= NULL
;
90 char *before_last_event_file_path
= NULL
;
94 * If nr_iter is negative, do an infinite tracing loop.
96 nr_iter
= atoi(argv
[1]);
100 /* By default, don't wait unless user specifies. */
101 nr_usec
= atoi(argv
[2]);
105 after_first_event_file_path
= argv
[3];
109 before_last_event_file_path
= argv
[4];
112 for (i
= 0; nr_iter
< 0 || i
< nr_iter
; i
++) {
113 if (nr_iter
>= 0 && i
== nr_iter
- 1) {
115 * Wait on synchronization before writing last
118 wait_on_file(before_last_event_file_path
);
121 tracepoint(tp
, tptest
, i
, netint
, values
, text
,
122 strlen(text
), dbl
, flt
);
125 * First loop we create the file if asked to indicate
126 * that at least one tracepoint has been hit.
128 create_file(after_first_event_file_path
);