ddb ps function from 1.1.5. Moved into its own file and cleaned up a bit

by me.

sys/ddb/db_ps.c

@@ -0,0 +1,79 @@
+/*-
+ * Copyright (c) 1993 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+#include <ddb/db_output.h>
+
+void
+db_ps() {
+	int np;
+	int nl = 0;
+	volatile struct proc *ap, *p, *pp;
+	np = nprocs;
+	p = ap = allproc;
+
+	db_printf("  pid  proc    addr     uid     ppid  pgrp   flag stat comm         wchan\n");
+	while (--np >= 0) {
+		/*
+		 * XXX just take 20 for now...
+		 */
+		if (nl++ == 20) {
+			db_printf("--More--");
+			cngetc();
+			db_printf("\r");
+			nl = 0;
+		}
+		pp = p->p_pptr;
+		if (pp == 0)
+			pp = p;
+		if (p->p_stat) {
+		    db_printf("%5d %06x %06x %3d %5d %5d  %06x  %d  %s   ",
+			   p->p_pid, ap, p->p_addr, p->p_cred->p_ruid, pp->p_pid, 
+			   p->p_pgrp->pg_id, p->p_flag, p->p_stat,
+			   p->p_comm);
+		    if (p->p_wchan) {
+			if (p->p_wmesg)
+			    db_printf("%s ", p->p_wmesg);
+			db_printf("%x", p->p_wchan);
+		    }
+		    db_printf("\n");
+		}
+		ap = p->p_next;
+		if (ap == 0 && np > 0)
+			ap = zombproc;
+		p = ap;
+    	}
+}