a87087e |
Jamozed |
2020-07-06 23:43:24 |
0
|
// time.c, version 1.0.1 |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
1
|
// OMKOV coreutils implementation of POSIX time |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
2
|
// Copyright (C) 2020, Jakob Wakeling |
e2140ec |
Jamozed |
2022-03-06 15:27:45 |
3
|
// MIT Licence |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
4
|
|
b181413 |
Jamozed |
2022-02-05 22:32:00 |
5
|
#include "util/error.h" |
b181413 |
Jamozed |
2022-02-05 22:32:00 |
6
|
#include "util/optget.h" |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
7
|
|
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
8
|
#include <sys/times.h> |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
9
|
#include <sys/wait.h> |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
10
|
#include <unistd.h> |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
11
|
|
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
12
|
#include <errno.h> |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
13
|
#include <stdbool.h> |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
14
|
#include <stdio.h> |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
15
|
#include <time.h> |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
16
|
|
a87087e |
Jamozed |
2020-07-06 23:43:24 |
17
|
#define VERSION "1.0.1" |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
18
|
|
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
19
|
static struct lop lops[] = { |
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
20
|
{ "help", ARG_NUL, 256 }, |
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
21
|
{ "version", ARG_NUL, 257 }, |
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
22
|
{ NULL, 0, 0 } |
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
23
|
}; |
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
24
|
|
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
25
|
static bool pflag; |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
26
|
|
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
27
|
static void hlp(void); |
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
28
|
static void ver(void); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
29
|
|
b634f01 |
Jamozed |
2020-07-09 22:11:16 |
30
|
int main(int ac, char *av[]) { (void)ac; A0 = av[0]; |
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
31
|
struct opt opt = OPTGET_INIT; opt.str = "p"; opt.lops = lops; |
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
32
|
for (int o; (o = optget(&opt, av, 0)) != -1;) switch (o) { |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
33
|
case 'p': { pflag = true; break; } |
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
34
|
case 256: { hlp(); return 0; } |
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
35
|
case 257: { ver(); return 0; } |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
36
|
default: { return 1; } |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
37
|
} |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
38
|
|
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
39
|
struct tms tm; clock_t cl = times(&tm); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
40
|
|
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
41
|
pid_t pid = fork(); |
a87087e |
Jamozed |
2020-07-06 23:43:24 |
42
|
if (pid == -1) { error(1, "%s", serr()); } |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
43
|
else if (pid == 0) { |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
44
|
execvp(av[opt.ind], &av[opt.ind]); |
a87087e |
Jamozed |
2020-07-06 23:43:24 |
45
|
warn("%s: %s", av[opt.ind], serr()); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
46
|
return errno = ENOENT ? 127 : 126; |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
47
|
} |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
48
|
|
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
49
|
int status; waitpid(pid, &status, 0); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
50
|
cl = times(&tm) - cl; |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
51
|
|
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
52
|
double tick = (double)sysconf(_SC_CLK_TCK); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
53
|
double real = (double)cl / tick; |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
54
|
double user = (double)(tm.tms_utime + tm.tms_cutime) / tick; |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
55
|
double sys = (double)(tm.tms_stime + tm.tms_cstime) / tick; |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
56
|
|
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
57
|
if (pflag) { |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
58
|
fprintf(stderr, "real %0.2f\n", real); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
59
|
fprintf(stderr, "user %0.2f\n", user); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
60
|
fprintf(stderr, "sys %0.2f\n", sys); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
61
|
} |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
62
|
else { |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
63
|
fprintf(stderr, "real %0.2fs\n", real); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
64
|
fprintf(stderr, "user %0.2fs\n", user); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
65
|
fprintf(stderr, "sys %0.2fs\n", sys); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
66
|
} |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
67
|
|
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
68
|
return WEXITSTATUS(status); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
69
|
} |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
70
|
|
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
71
|
static void hlp(void) { |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
72
|
puts("time - time a simple command\n"); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
73
|
puts("usage: time [-p] command [argument...]\n"); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
74
|
puts("options:"); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
75
|
puts(" -p Use portable format"); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
76
|
puts(" --help Display help information"); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
77
|
puts(" --version Display version information"); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
78
|
} |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
79
|
|
30cf081 |
Jamozed |
2020-08-28 23:01:02 |
80
|
static void ver(void) { |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
81
|
puts("OMKOV coreutils time, version " VERSION); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
82
|
puts("Copyright (C) 2020, Jakob Wakeling"); |
e2140ec |
Jamozed |
2022-03-06 15:27:45 |
83
|
puts("MIT Licence (https://opensource.org/licenses/MIT)"); |
29dd2d0 |
Jamozed |
2020-07-06 03:21:49 |
84
|
} |
|
|
|
85
|
|