1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2021 Red Hat Inc, Daniel Bristot de Oliveira <bristot@kernel.org>
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <pthread.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include "timerlat.h"
static void timerlat_usage(int err)
{
int i;
static const char * const msg[] = {
"",
"timerlat version " VERSION,
"",
" usage: [rtla] timerlat [MODE] ...",
"",
" modes:",
" top - prints the summary from timerlat tracer",
" hist - prints a histogram of timer latencies",
"",
"if no MODE is given, the top mode is called, passing the arguments",
NULL,
};
for (i = 0; msg[i]; i++)
fprintf(stderr, "%s\n", msg[i]);
exit(err);
}
int timerlat_main(int argc, char *argv[])
{
if (argc == 0)
goto usage;
/*
* if timerlat was called without any argument, run the
* default cmdline.
*/
if (argc == 1) {
timerlat_top_main(argc, argv);
exit(0);
}
if ((strcmp(argv[1], "-h") == 0) || (strcmp(argv[1], "--help") == 0)) {
timerlat_usage(0);
} else if (strncmp(argv[1], "-", 1) == 0) {
/* the user skipped the tool, call the default one */
timerlat_top_main(argc, argv);
exit(0);
} else if (strcmp(argv[1], "top") == 0) {
timerlat_top_main(argc-1, &argv[1]);
exit(0);
} else if (strcmp(argv[1], "hist") == 0) {
timerlat_hist_main(argc-1, &argv[1]);
exit(0);
}
usage:
timerlat_usage(1);
exit(1);
}
|
