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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
// gcc -g -O2 -Wall -o px px.c -lprocps
#include <sys/sysinfo.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <proc/readproc.h>
time_t seconds_since_boot;
int Hertz;
static int want_this_proc_pcpu(proc_t *buf){
unsigned long long used_jiffies;
unsigned long pcpu = 0;
unsigned long long seconds;
// if(!want_this_proc(buf)) return 0;
used_jiffies = buf->utime + buf->stime;
// if(include_dead_children) used_jiffies += (buf->cutime + buf->cstime);
seconds = seconds_since_boot - buf->start_time / Hertz;
if(seconds) pcpu = (used_jiffies * 1000ULL / Hertz) / seconds;
buf->pcpu = pcpu; // fits in an int, summing children on 128 CPUs
return 1;
}
static void
print_human(intmax_t i)
{
double d = i;
const char *u = "\0\0K\0M\0G\0T\0P\0E\0Z\0Y\0";
while (d >= 1024) {
u += 2;
d /= 1024.0;
}
if (!*u)
printf("%5.0f", d);
else if (d < 10.0)
printf("%4.1f%s", d, u);
else
printf("%4.0f%s", d, u);
}
int
main(int argc, char *argv[])
{
proc_t **result;
int hz;
if((hz = sysconf(_SC_CLK_TCK)) > 0){
Hertz = hz;
} else {
Hertz = 100; /* shrug */
}
struct sysinfo si;
sysinfo(&si);
seconds_since_boot = si.uptime;
time_t now = time(0);
result = readproctab(PROC_FILLMEM | PROC_FILLCOM | PROC_FILLUSR |
PROC_FILLSTAT | PROC_FILLSTATUS);
int matched = 0;
for (; *result; result++) {
proc_t *p = *result;
if (argc > 0) {
for (int i = 1; i < argc; i++)
if (strstr(p->cmd, argv[i]))
goto match;
continue;
match:
matched++;
} else {
matched++;
}
if (matched == 1)
printf(" PID USER %%CPU VSZ RSS START ELAPSED TIME COMMAND\n");
want_this_proc_pcpu(p);
printf("%5d", p->tid);
printf(" %-8.8s", p->euser);
printf(" %4.1f", p->pcpu/10.0);
print_human(p->vm_size*1024);
print_human(p->vm_rss*1024);
time_t start;
time_t seconds_ago;
start = (now - si.uptime) + p->start_time / Hertz;
seconds_ago = now - start;
if(seconds_ago < 0) seconds_ago=0;
char buf[7];
if (seconds_ago > 3600*24)
strftime(buf, sizeof buf, "%b%d", localtime(&start));
else
strftime(buf, sizeof buf, "%H:%M", localtime(&start));
printf(" %s", buf);
time_t t = seconds_ago;
unsigned dd,hh,mm,ss;
ss = t%60;
t /= 60;
mm = t%60;
t /= 60;
hh = t%24;
t /= 24;
dd = t;
if (dd)
printf(" %3ud%02uh", dd, hh);
else if (hh)
printf(" %2uh%02um", hh, mm);
else
printf(" %2u:%02u", mm, ss);
t = (p->utime + p->stime) / Hertz;
ss = t%60;
t /= 60;
mm = t%60;
t /= 60;
hh = t%24;
if (hh)
printf(" %3uh%02u", hh, mm);
else
printf(" %2u:%02u", mm, ss);
if (p->cmdline) {
for (int i = 0; p->cmdline[i]; i++) {
printf(" %s", p->cmdline[i]);
}
} else {
// kernel threads
printf(" [%s]", p->cmd);
}
if (p->state == 'Z')
printf(" <defunct>");
printf("\n");
#if 0
printf("%d %s %f %ld %ld %ld %lld %lld %lld %s\n",
p->tid, p->euser, p->pcpu/10.0, pmem,
p->vm_size, p->vm_rss, p->start_time, 0ULL, p->utime,
p->cmd
);
#endif
}
// freeproctab(result);
exit(matched > 0);
}
|