32c0ced22a
1998-08-09 Martin Baulig <martin@home-of-linux.org> * include/glibtop/prockernel.h (glibtop_proc_kernel): Renamed `wchan' field to `nwchan'; added `wchan' which is of type `char [40]'.
88 lines
3.1 KiB
C
88 lines
3.1 KiB
C
/* $Id$ */
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/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
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This file is part of the Gnome Top Library.
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Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 1998.
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The Gnome Top Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The Gnome Top Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/xmalloc.h>
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#include <glibtop/proclist.h>
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#include <glibtop_suid.h>
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static const unsigned long _glibtop_sysdeps_proclist =
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(1 << GLIBTOP_PROCLIST_TOTAL) + (1 << GLIBTOP_PROCLIST_NUMBER) +
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(1 << GLIBTOP_PROCLIST_SIZE);
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/* Fetch list of currently running processes.
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* The interface of this function is a little bit different from the others:
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* buf->flags is only set if the call succeeded, in this case pids_chain,
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* a list of the pids of all currently running processes is returned,
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* buf->number is the number of elements of this list and buf->size is
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* the size of one single element (sizeof (unsigned)). The total size is
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* stored in buf->total.
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*
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* The calling function has to free the memory to which a pointer is returned.
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*
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* IMPORTANT NOTE:
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* On error, this function MUST return NULL and set buf->flags to zero !
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* On success, it returnes a pointer to a list of buf->number elements
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* each buf->size big. The total size is stored in buf->total.
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* The calling function has to free the memory to which a pointer is returned.
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*
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* On error, NULL is returned and buf->flags is zero. */
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/* Init function. */
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void
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glibtop_init_proclist_p (glibtop *server)
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{
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server->sysdeps.proclist = _glibtop_sysdeps_proclist;
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}
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unsigned *
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glibtop_get_proclist_p (glibtop *server, glibtop_proclist *buf,
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int64_t which, int64_t arg)
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{
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struct kinfo_proc *pinfo;
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unsigned *pids = NULL;
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int count;
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int i;
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glibtop_init_p (server, GLIBTOP_SYSDEPS_PROCLIST, 0);
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memset (buf, 0, sizeof (glibtop_proclist));
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/* Get the process data */
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pinfo = kvm_getprocs (server->machine.kd, which, arg, &count);
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/* Allocate count objects in the pids_chain array
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* Same as malloc is pids is NULL, which it is. */
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pids = glibtop_realloc_r (server, pids, count * sizeof (unsigned));
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/* Copy the pids over to this chain */
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for (i=0; i < count; i++) {
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pids [i] = (unsigned) pinfo[i].kp_proc.p_pid;
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} /* end for */
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/* Set the fields in buf */
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buf->number = count;
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buf->size = sizeof (unsigned);
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buf->total = count * sizeof (unsigned);
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buf->flags = _glibtop_sysdeps_proclist;
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return pids;
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}
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