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/* Copyright (C) 1998 Joshua Sled
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This file is part of LibGTop 1.0.
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Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 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., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <config.h>
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/procsegment.h>
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#include <glibtop_suid.h>
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#include <kvm.h>
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#include <sys/param.h>
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#include <sys/sysctl.h>
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static const unsigned long _glibtop_sysdeps_proc_segment =
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(1L << GLIBTOP_PROC_SEGMENT_TEXT_RSS) +
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(1L << GLIBTOP_PROC_SEGMENT_DATA_RSS);
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static int pagesize;
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/* Init function. */
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void
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_glibtop_init_proc_segment_p (glibtop *server)
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{
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pagesize = getpagesize ();
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server->sysdeps.proc_segment = _glibtop_sysdeps_proc_segment;
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}
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/* Provides detailed information about a process. */
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void
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glibtop_get_proc_segment_p (glibtop *server,
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glibtop_proc_segment *buf,
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pid_t pid)
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{
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struct kinfo_proc *pinfo;
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int count = 0;
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glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_PROC_SEGMENT), 0);
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memset (buf, 0, sizeof (glibtop_proc_segment));
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/* It does not work for the swapper task. */
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if (pid == 0) return;
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/* Get the process info from the kernel */
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pinfo = kvm_getprocs (server->machine->kd, KERN_PROC_PID, pid,
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sizeof (*pinfo), &count);
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if (pinfo == NULL) {
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glibtop_warn_io_r (server, "kvm_getprocs (%d)", pid);
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return;
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}
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buf->text_rss = pinfo[0].p_vm_tsize * pagesize;
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buf->data_rss = pinfo[0].p_vm_dsize * pagesize;
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buf->flags = _glibtop_sysdeps_proc_segment;
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}
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