1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0+
3#
4# Runs the C-language litmus tests specified on standard input, using up
5# to the specified number of CPUs (defaulting to all of them) and placing
6# the results in the specified directory (defaulting to the same place
7# the litmus test came from).
8#
9# sh runlitmushist.sh
10#
11# Run from the Linux kernel tools/memory-model directory.
12# This script uses environment variables produced by parseargs.sh.
13#
14# Copyright IBM Corporation, 2018
15#
16# Author: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
17
18T=/tmp/runlitmushist.sh.$$
19trap 'rm -rf $T' 0
20mkdir $T
21
22if test -d litmus
23then
24	:
25else
26	echo Directory \"litmus\" missing, aborting run.
27	exit 1
28fi
29
30# Prefixes for per-CPU scripts
31for ((i=0;i<$LKMM_JOBS;i++))
32do
33	echo dir="$LKMM_DESTDIR" > $T/$i.sh
34	echo T=$T >> $T/$i.sh
35	echo herdoptions=\"$LKMM_HERD_OPTIONS\" >> $T/$i.sh
36	cat << '___EOF___' >> $T/$i.sh
37	runtest () {
38		echo ' ... ' /usr/bin/time $LKMM_TIMEOUT_CMD herd7 $herdoptions $1 '>' $dir/$1.out '2>&1'
39		if /usr/bin/time $LKMM_TIMEOUT_CMD herd7 $herdoptions $1 > $dir/$1.out 2>&1
40		then
41			if ! grep -q '^Observation ' $dir/$1.out
42			then
43				echo ' !!! Herd failed, no Observation:' $1
44			fi
45		else
46			exitcode=$?
47			if test "$exitcode" -eq 124
48			then
49				exitmsg="timed out"
50			else
51				exitmsg="failed, exit code $exitcode"
52			fi
53			echo ' !!! Herd' ${exitmsg}: $1
54		fi
55	}
56___EOF___
57done
58
59awk -v q="'" -v b='\\' '
60{
61	print "echo `grep " q "^P[0-9]" b "+(" q " " $0 " | tail -1 | sed -e " q "s/^P" b "([0-9]" b "+" b ")(.*$/" b "1/" q "` " $0
62}' | bash |
63sort -k1n |
64awk -v ncpu=$LKMM_JOBS -v t=$T '
65{
66	print "runtest " $2 >> t "/" NR % ncpu ".sh";
67}
68
69END {
70	for (i = 0; i < ncpu; i++) {
71		print "sh " t "/" i ".sh > " t "/" i ".sh.out 2>&1 &";
72		close(t "/" i ".sh");
73	}
74	print "wait";
75}' | sh
76cat $T/*.sh.out
77if grep -q '!!!' $T/*.sh.out
78then
79	echo ' ---' Summary: 1>&2
80	grep '!!!' $T/*.sh.out 1>&2
81	nfail="`grep '!!!' $T/*.sh.out | wc -l`"
82	echo 'Number of failed herd runs (e.g., timeout): ' $nfail 1>&2
83	exit 1
84else
85	echo All runs completed successfully. 1>&2
86	exit 0
87fi
88