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
|
/* $Id$ */
/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
This file is part of the Gnome Top Library.
Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 1998.
The Gnome Top Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The Gnome Top Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <config.h>
#include <glibtop/proclist.h>
#include <kvm.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#define GLIBTOP_PROCLIST_FLAGS 3
static const unsigned long _glibtop_sysdeps_proclist =
(1 << GLIBTOP_PROCLIST_TOTAL) + (1 << GLIBTOP_PROCLIST_NUMBER) +
(1 << GLIBTOP_PROCLIST_SIZE);
/* Fetch list of currently running processes.
* The interface of this function is a little bit different from the others:
* buf->flags is only set if the call succeeded, in this case pids_chain,
* a list of the pids of all currently running processes is returned,
* buf->number is the number of elements of this list and buf->size is
* the size of one single element (sizeof (unsigned)). The total size is
* stored in buf->total.
*
* The calling function has to free the memory to which a pointer is returned.
*
* IMPORTANT NOTE:
* On error, this function MUST return NULL and set buf->flags to zero !
* On success, it returnes a pointer to a list of buf->number elements
* each buf->size big. The total size is stored in buf->total.
* The calling function has to free the memory to which a pointer is returned.
*
* On error, NULL is returned and buf->flags is zero. */
unsigned *
glibtop_get_proclist_s (glibtop *server, glibtop_proclist *buf)
{
struct kinfo_proc *pinfo;
unsigned *pids=NULL;
int count;
int i;
glibtop_init_r (&server, 0, 0);
memset (buf, 0, sizeof (glibtop_proclist));
/* Get the process data */
pinfo = kvm_getprocs(server->machine.kd, KERN_PROC_ALL, NULL, &count);
/* Allocate count objects in the pids_chain array
Same as malloc is pids is NULL, which it is. */
pids = glibtop_realloc__r(server, pids, count * sizeof(unsigned));
/* Copy the pids over to this chain */
for (i=0; i < count; i++) {
pids[i] = (unsigned)pinfo[i].kp_proc.p_pid;
} /* end for */
/* Set the fields in buf */
buf->number = count;
buf->size = sizeof(unsigned);
buf->total = count * sizeof(unsigned);
buf->flags = _glibtop_sysdeps_proclist;
/* return the data */
return pids;
}
|
