Split off OpenBSD code into a separate implementation

Move OpenBSD code into its own sysdeps directory. The changes from
bsd/ were becoming to hard to maintain as a #ifdef tree. This is
what's currently being distributed as part of OpenBSD ports.

sysdeps/openbsd/procsegment.c

@@ -0,0 +1,83 @@
+/* $OpenBSD: procsegment.c,v 1.2 2011/05/23 19:35:55 jasper Exp $	*/
+
+/* Copyright (C) 1998 Joshua Sled
+   This file is part of LibGTop 1.0.
+
+   Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 1998.
+
+   LibGTop is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License,
+   or (at your option) any later version.
+
+   LibGTop 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 General Public License
+   for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with LibGTop; see the file COPYING. If not, write to the
+   Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+*/
+
+#include <config.h>
+#include <glibtop.h>
+#include <glibtop/error.h>
+#include <glibtop/procsegment.h>
+
+#include <glibtop_suid.h>
+
+#include <kvm.h>
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+static const unsigned long _glibtop_sysdeps_proc_segment = 0;
+
+/* Init function. */
+
+void
+_glibtop_init_proc_segment_p (glibtop *server)
+{
+	server->sysdeps.proc_segment = _glibtop_sysdeps_proc_segment;
+}
+
+/* Provides detailed information about a process. */
+
+void
+glibtop_get_proc_segment_p (glibtop *server,
+			    glibtop_proc_segment *buf,
+			    pid_t pid)
+{
+	glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_PROC_SEGMENT), 0);
+
+	memset (buf, 0, sizeof (glibtop_proc_segment));
+
+#if 0
+	/* Get the process info from the kernel */
+	kvm_getprocs (server->machine.kd, KERN_PROC_PID, pid, count);
+	if (*count != 1) {
+		return; /* the zeroed-out buffer indicating no data */
+	}
+
+	/* trs: text resident set size
+	   pinfo[0]->kp_eproc.e_xrssize;
+	*/
+	/* buf->trs = pinfo[0]->kp_eproc.e_xrssize; */
+	/* lrs: shared-lib resident set size
+	   ?  */
+	/* drs: data resident set size
+	   pinfo[0]->kp_eproc.e_vm.vm_map.vm_dsize;
+	*/
+	/* dt: dirty pages
+	 */
+	/* start_code: address of beginning of code segment
+
+	 */
+	/* end_code: address of end of code segment
+	 */
+	/* start_stack: address of the bottom of stack segment
+	 */
+#endif
+}
+