cf611f9157
1999-02-22 Martin Baulig <martin@home-of-linux.org> Set the copyright of LibGTop to the GNU General Public License. * copyright.txt: Set the year to 1998-99 and pretty-format it a little bit. Same in all C source and header files.
98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/* $Id$ */
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/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include <glibtop.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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*
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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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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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register struct proc *pp;
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register int i, nproc = 0;
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unsigned *proc_list = NULL;
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size_t proc_size;
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glibtop_init_p (server, (1 << GLIBTOP_SYSDEPS_PROCLIST), 0);
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memset (buf, 0, sizeof (glibtop_proclist));
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/* Read process table from kernel. */
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_glibtop_read_proc_table (server);
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/* Count number of processes. */
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for (pp = server->machine.proc_table, i = 0;
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i < server->machine.nproc; pp++, i++) {
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if (pp->p_stat == 0)
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continue;
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else
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nproc++;
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}
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if (nproc == 0) /* Should never happen. */
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return NULL;
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/* Allocate space for process list. */
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proc_size = nproc * sizeof (unsigned);
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proc_list = glibtop_malloc_r (server, proc_size);
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/* Write process list. */
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for (pp = server->machine.proc_table, i = 0, nproc = 0;
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i < server->machine.nproc; pp++, i++) {
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if (pp->p_stat == 0)
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continue;
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proc_list [nproc++] = pp->p_pid;
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}
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/* Since everything is ok now, we can set buf->flags, fill in the remaining fields
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and return proc_list. */
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buf->flags = _glibtop_sysdeps_proclist;
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buf->size = sizeof (unsigned);
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buf->number = nproc;
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buf->total = nproc * sizeof (unsigned);
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return proc_list;
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}
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