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
|
/*-------------------------------------------------------------------------
*
* port.c--
* Intel x86/Intel SVR4-specific routines
*
* Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* /usr/local/devel/pglite/cvs/src/backend/port/svr4/port.c,v 1.2 1995/03/17 06:40:19 andrew Exp
*
*-------------------------------------------------------------------------
*/
#include <math.h> /* for pow() prototype */
#include <errno.h>
#include "rusagestub.h"
#include "port-protos.h"
long
random()
{
return (lrand48());
}
void
srandom(int seed)
{
srand48((long int) seed);
}
int
getrusage(int who, struct rusage * rusage)
{
struct tms tms;
register int tick_rate = CLK_TCK; /* ticks per second */
clock_t u,
s;
if (rusage == (struct rusage *) NULL)
{
errno = EFAULT;
return (-1);
}
if (times(&tms) < 0)
{
/* errno set by times */
return (-1);
}
switch (who)
{
case RUSAGE_SELF:
u = tms.tms_utime;
s = tms.tms_stime;
break;
case RUSAGE_CHILDREN:
u = tms.tms_cutime;
s = tms.tms_cstime;
break;
default:
errno = EINVAL;
return (-1);
}
#define TICK_TO_SEC(T, RATE) ((T)/(RATE))
#define TICK_TO_USEC(T,RATE) (((T)%(RATE)*1000000)/RATE)
rusage->ru_utime.tv_sec = TICK_TO_SEC(u, tick_rate);
rusage->ru_utime.tv_usec = TICK_TO_USEC(u, tick_rate);
rusage->ru_stime.tv_sec = TICK_TO_SEC(s, tick_rate);
rusage->ru_stime.tv_usec = TICK_TO_USEC(u, tick_rate);
return (0);
}
#include <sys/types.h>
#include <string.h>
#include <sys/utsname.h>
int
gethostname(char *name, int namelen)
{
static struct utsname mname;
static int called = 0;
if (!called)
{
called++;
uname(&mname);
}
strncpy(name, mname.nodename, (SYS_NMLN < namelen ? SYS_NMLN : namelen));
return (0);
}
|
