blob: f57ed6f5a7bae6bb314dbfef7bfc15fb6e9921a8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
########################################################################
# #
# This software is part of the ast package #
# Copyright (c) 1982-2010 AT&T Intellectual Property #
# and is licensed under the #
# Common Public License, Version 1.0 #
# by AT&T Intellectual Property #
# #
# A copy of the License is available at #
# http://www.opensource.org/licenses/cpl1.0.txt #
# (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) #
# #
# Information and Software Systems Research #
# AT&T Research #
# Florham Park NJ #
# #
# David Korn <dgk@research.att.com> #
# #
########################################################################
function err_exit
{
print -u2 -n "\t"
print -u2 -r ${Command}[$1]: "${@:2}"
(( Errors+=1 ))
}
alias err_exit='err_exit $LINENO'
float DELAY=${1:-0.2}
integer FOREGROUND=10 BACKGROUND=2 Errors=0
s=$($SHELL -c '
integer i foreground=0 background=0
float delay='$DELAY' d=0 s=0
set --errexit
trap "(( background++ ))" CHLD
(( d = delay ))
for ((i = 0; i < '$BACKGROUND'; i++))
do sleep $d &
(( d *= 4 ))
(( s += d ))
done
for ((i = 0; i < '$FOREGROUND'; i++))
do (( foreground++ ))
sleep $delay
(( s -= delay ))
$SHELL -c : > /dev/null # foreground does not generate SIGCHLD
done
if (( (s += delay) < 1 ))
then (( s = 1 ))
fi
sleep $s
wait
print foreground=$foreground background=$background
') || err_exit "test loop failed"
eval $s
(( foreground == FOREGROUND )) || err_exit "expected '$FOREGROUND foreground' -- got '$foreground' (DELAY=$DELAY)"
(( background == BACKGROUND )) || err_exit "expected '$BACKGROUND background' -- got '$background' (DELAY=$DELAY)"
set --noerrexit
if [[ ${.sh.version} == Version?*([[:upper:]])J* ]]
then
jobmax=4
got=$($SHELL -c '
JOBMAX='$jobmax' JOBCOUNT=$(('$jobmax'*2))
integer running=0 maxrunning=0
trap "((running--))" CHLD
for ((i=0; i<JOBCOUNT; i++))
do sleep 1 &
if ((++running > maxrunning))
then ((maxrunning=running))
fi
done
wait
print running=$running maxrunning=$maxrunning
')
exp='running=0 maxrunning='$jobmax
[[ $got == $exp ]] || err_exit "SIGCHLD trap queueing failed -- expected '$exp', got '$got'"
got=$($SHELL -c '
typeset -A proc
trap "
print \${proc[\$!].name} \${proc[\$!].status} \$?
unset proc[\$!]
" CHLD
{ sleep 3; print a; exit 1; } &
proc[$!]=( name=a status=1 )
{ sleep 2; print b; exit 2; } &
proc[$!]=( name=b status=2 )
{ sleep 1; print c; exit 3; } &
proc[$!]=( name=c status=3 )
while (( ${#proc[@]} ))
do sleep -s
done
')
exp='c\nc 3 3\nb\nb 2 2\na\na 1 1'
[[ $got == $exp ]] || err_exit "SIGCHLD trap queueing failed -- expected $(printf %q "$exp"), got $(printf %q "$got")"
fi
{
got=$( ( sleep 1;print $'\n') | $SHELL -c 'function handler { : ;}
trap handler CHLD; sleep .3 & IFS= read; print good')
} 2> /dev/null
[[ $got == good ]] || err_exit 'SIGCLD handler effects read behavior'
set -- $(
(
$SHELL -xc $'
trap \'wait $!; print $! $?\' CHLD
{ sleep 0.1; exit 9; } &
print $!
sleep 0.5
'
) 2>/dev/null; print $?
)
if (( $# != 4 ))
then err_exit "CHLD trap failed -- expected 4 args, got $#"
elif (( $4 != 0 ))
then err_exit "CHLD trap failed -- exit code $4"
elif (( $1 != $2 ))
then err_exit "child pid mismatch -- got '$1' != '$2'"
elif (( $3 != 9 ))
then err_exit "child status mismatch -- expected '9', got '$3'"
fi
exit $((Errors))
|
