ttime.c - plan9port - [fork] Plan 9 from user space
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ttime.c (1584B)
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1 #include <u.h>
2 #include <libc.h>
3
4 char output[4096];
5 void add(char*, ...);
6 void error(char*);
7 void notifyf(void*, char*);
8
9 void
10 main(int argc, char *argv[])
11 {
12 int i;
13 Waitmsg *w;
14 vlong t0, t1;
15 long l;
16 char *p;
17 char err[ERRMAX];
18
19 if(argc <= 1){
20 fprint(2, "usage: time command\n");
21 exits("usage");
22 }
23
24 t0 = nsec();
25 switch(fork()){
26 case -1:
27 error("fork");
28 case 0:
29 exec(argv[1], &argv[1]);
30 if(argv[1][0] != '/' && strncmp(argv[1], "./", 2) &&
31 strncmp(argv[1], "../", 3)){
32 sprint(output, "/bin/%s", argv[1]);
33 exec(output, &argv[1]);
34 }
35 error(argv[1]);
36 }
37
38 notify(notifyf);
39
40 loop:
41 w = wait();
42 t1 = nsec();
43 if(w == nil){
44 rerrstr(err, sizeof err);
45 if(strcmp(err, "interrupted") == 0)
46 goto loop;
47 error("wait");
48 }
49 l = w->time[0];
50 add("%ld.%.3ldu", l/1000, l%1000);
51 l = w->time[1];
52 add("%ld.%.3lds", l/1000, l%1000);
53 l = (t1-t0)/1000000;
54 add("%ld.%.3ldr", l/1000, l%1000);
55 add("\t");
56 for(i=1; i<argc; i++){
57 add("%s", argv[i], 0);
58 if(i>4){
59 add("...");
60 break;
61 }
62 }
63 if(w->msg[0]){
64 p = utfrune(w->msg, ':');
65 if(p && p[1])
66 p++;
67 else
68 p = w->msg;
69 add(" # status=%s", p);
70 }
71 fprint(2, "%s\n", output);
72 exits(w->msg);
73 }
74
75 void
76 add(char *a, ...)
77 {
78 static int beenhere=0;
79 va_list arg;
80
81 if(beenhere)
82 strcat(output, " ");
83 va_start(arg, a);
84 vseprint(output+strlen(output), output+sizeof(output), a, arg);
85 va_end(arg);
86 beenhere++;
87 }
88
89 void
90 error(char *s)
91 {
92
93 fprint(2, "time: %s: %r\n", s);
94 exits(s);
95 }
96
97 void
98 notifyf(void *a, char *s)
99 {
100 USED(a);
101 if(strcmp(s, "interrupt") == 0)
102 noted(NCONT);
103 noted(NDFLT);
104 }