| 1 | ## oils_failures_allowed: 8
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| 2 | ## compare_shells: dash bash mksh
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| 3 |
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| 4 | # Job control constructs:
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| 5 | # & terminator (instead of ;)
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| 6 | # $! -- last PID
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| 7 | # wait builtin (wait -n waits for next)
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| 8 | #
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| 9 | # Only interactive:
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| 10 | # fg
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| 11 | # bg
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| 12 | # %1 -- current job
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| 13 |
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| 14 | #### wait with nothing to wait for
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| 15 | wait
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| 16 | ## status: 0
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| 17 |
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| 18 | #### wait -n with arguments - arguments are respected
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| 19 | case $SH in dash|mksh) exit ;; esac
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| 20 |
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| 21 | echo x &
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| 22 |
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| 23 | # here, you can't tell if it's -n or the other
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| 24 | wait -n $!
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| 25 | echo status=$?
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| 26 |
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| 27 | # by the bash error, you can tell which is preferred
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| 28 | wait -n $! bad 2>err.txt
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| 29 | echo status=$?
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| 30 | echo
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| 31 |
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| 32 | n=$(wc -l < err.txt)
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| 33 | if test "$n" -gt 0; then
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| 34 | echo 'got error lines'
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| 35 | fi
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| 36 |
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| 37 | ## STDOUT:
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| 38 | x
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| 39 | status=0
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| 40 | status=127
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| 41 |
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| 42 | got error lines
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| 43 | ## END
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| 44 | ## N-I dash/mksh STDOUT:
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| 45 | ## END
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| 46 |
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| 47 | #### wait -n with nothing to wait for
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| 48 | # The 127 is STILL overloaded. Copying bash for now.
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| 49 | wait -n
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| 50 | ## status: 127
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| 51 | ## N-I dash status: 2
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| 52 | ## N-I mksh status: 1
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| 53 |
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| 54 | #### wait with jobspec syntax %nonexistent
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| 55 | wait %nonexistent
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| 56 | ## status: 127
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| 57 | ## N-I dash status: 2
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| 58 |
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| 59 | #### wait with invalid PID
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| 60 | wait 12345678
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| 61 | ## status: 127
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| 62 |
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| 63 | #### wait with invalid arg
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| 64 | wait zzz
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| 65 | ## status: 2
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| 66 | ## OK bash status: 1
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| 67 | # mksh confuses a syntax error with 'command not found'!
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| 68 | ## BUG mksh status: 127
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| 69 |
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| 70 | #### wait for N parallel jobs
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| 71 |
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| 72 | for i in 3 2 1; do
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| 73 | { sleep 0.0$i; exit $i; } &
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| 74 | done
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| 75 | wait
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| 76 |
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| 77 | # status is lost
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| 78 | echo status=$?
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| 79 |
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| 80 | ## STDOUT:
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| 81 | status=0
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| 82 | ## END
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| 83 |
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| 84 | #### wait for N parallel jobs and check failure
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| 85 |
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| 86 | set -o errexit
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| 87 |
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| 88 | pids=''
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| 89 | for i in 3 2 1; do
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| 90 | { sleep 0.0$i; echo $i; exit $i; } &
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| 91 | pids="$pids $!"
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| 92 | done
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| 93 |
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| 94 | for pid in $pids; do
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| 95 | set +o errexit
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| 96 | wait $pid
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| 97 | status=$?
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| 98 | set -o errexit
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| 99 |
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| 100 | echo status=$status
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| 101 | done
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| 102 |
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| 103 | ## STDOUT:
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| 104 | 1
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| 105 | 2
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| 106 | 3
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| 107 | status=3
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| 108 | status=2
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| 109 | status=1
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| 110 | ## END
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| 111 |
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| 112 | #### Builtin in background
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| 113 | echo async &
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| 114 | wait
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| 115 | ## stdout: async
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| 116 |
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| 117 | #### External command in background
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| 118 | sleep 0.01 &
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| 119 | wait
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| 120 | ## stdout-json: ""
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| 121 |
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| 122 | #### Start background pipeline, wait $pid
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| 123 | echo hi | { exit 99; } &
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| 124 | echo status=$?
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| 125 | wait $!
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| 126 | echo status=$?
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| 127 | echo --
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| 128 |
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| 129 | pids=''
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| 130 | for i in 3 2 1; do
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| 131 | sleep 0.0$i | echo i=$i | ( exit $i ) &
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| 132 | pids="$pids $!"
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| 133 | done
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| 134 | #echo "PIDS $pids"
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| 135 |
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| 136 | for pid in $pids; do
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| 137 | wait $pid
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| 138 | echo status=$?
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| 139 | done
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| 140 |
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| 141 | # Not cleaned up
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| 142 | if false; then
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| 143 | echo 'DEBUG'
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| 144 | jobs --debug
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| 145 | fi
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| 146 |
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| 147 | ## STDOUT:
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| 148 | status=0
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| 149 | status=99
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| 150 | --
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| 151 | status=3
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| 152 | status=2
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| 153 | status=1
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| 154 | ## END
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| 155 |
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| 156 | #### Start background pipeline, wait %job_spec
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| 157 | echo hi | { exit 99; } &
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| 158 | echo status=$?
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| 159 | wait %1
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| 160 | echo status=$?
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| 161 | ## STDOUT:
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| 162 | status=0
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| 163 | status=99
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| 164 | ## END
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| 165 | ## N-I mksh STDOUT:
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| 166 | status=0
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| 167 | status=127
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| 168 | ## END
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| 169 |
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| 170 | #### Wait for job and PIPESTATUS
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| 171 |
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| 172 | # foreground
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| 173 | { echo hi; exit 55; } | false
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| 174 | echo fore status=$? pipestatus=${PIPESTATUS[@]}
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| 175 |
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| 176 | # background
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| 177 | { echo hi; exit 44; } | false &
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| 178 | echo back status=$? pipestatus=${PIPESTATUS[@]}
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| 179 |
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| 180 | # wait for pipeline
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| 181 | wait %+
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| 182 | #wait %1
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| 183 | #wait $!
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| 184 | echo wait status=$? pipestatus=${PIPESTATUS[@]}
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| 185 |
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| 186 | ## STDOUT:
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| 187 | fore status=1 pipestatus=55 1
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| 188 | back status=0 pipestatus=0
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| 189 | wait status=1 pipestatus=1
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| 190 | ## END
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| 191 | ## N-I dash status: 2
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| 192 | ## N-I dash STDOUT:
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| 193 | ## END
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| 194 |
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| 195 | #### Wait for job and PIPESTATUS - cat
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| 196 |
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| 197 | # foreground
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| 198 | exit 55 | ( cat; exit 99 )
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| 199 | echo fore status=$? pipestatus=${PIPESTATUS[@]}
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| 200 |
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| 201 | # background
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| 202 | exit 44 | ( cat; exit 88 ) &
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| 203 | echo back status=$? pipestatus=${PIPESTATUS[@]}
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| 204 |
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| 205 | # wait for pipeline
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| 206 | wait %+
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| 207 | #wait %1
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| 208 | #wait $!
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| 209 | echo wait status=$? pipestatus=${PIPESTATUS[@]}
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| 210 | echo
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| 211 |
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| 212 | # wait for non-pipeline
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| 213 | ( exit 77 ) &
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| 214 | wait %+
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| 215 | echo wait status=$? pipestatus=${PIPESTATUS[@]}
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| 216 |
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| 217 | ## STDOUT:
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| 218 | fore status=99 pipestatus=55 99
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| 219 | back status=0 pipestatus=0
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| 220 | wait status=88 pipestatus=88
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| 221 |
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| 222 | wait status=77 pipestatus=77
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| 223 | ## END
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| 224 | ## N-I dash status: 2
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| 225 | ## N-I dash STDOUT:
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| 226 | ## END
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| 227 |
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| 228 | #### Brace group in background, wait all
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| 229 | { sleep 0.09; exit 9; } &
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| 230 | { sleep 0.07; exit 7; } &
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| 231 | wait # wait for all gives 0
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| 232 | echo "status=$?"
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| 233 | ## stdout: status=0
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| 234 |
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| 235 | #### Wait on background process PID
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| 236 | { sleep 0.09; exit 9; } &
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| 237 | pid1=$!
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| 238 | { sleep 0.07; exit 7; } &
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| 239 | pid2=$!
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| 240 | wait $pid2
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| 241 | echo "status=$?"
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| 242 | wait $pid1
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| 243 | echo "status=$?"
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| 244 | ## STDOUT:
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| 245 | status=7
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| 246 | status=9
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| 247 | ## END
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| 248 |
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| 249 | #### Wait on multiple specific IDs returns last status
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| 250 | { sleep 0.08; exit 8; } &
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| 251 | jid1=$!
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| 252 | { sleep 0.09; exit 9; } &
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| 253 | jid2=$!
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| 254 | { sleep 0.07; exit 7; } &
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| 255 | jid3=$!
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| 256 | wait $jid1 $jid2 $jid3 # NOTE: not using %1 %2 %3 syntax on purpose
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| 257 | echo "status=$?" # third job I think
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| 258 | ## stdout: status=7
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| 259 |
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| 260 | #### wait -n
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| 261 | case $SH in dash|mksh) return ;; esac
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| 262 |
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| 263 | { sleep 0.09; exit 9; } &
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| 264 | { sleep 0.03; exit 3; } &
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| 265 | wait -n
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| 266 | echo "status=$?"
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| 267 | wait -n
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| 268 | echo "status=$?"
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| 269 | ## STDOUT:
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| 270 | status=3
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| 271 | status=9
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| 272 | ## END
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| 273 | ## N-I dash/mksh stdout-json: ""
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| 274 |
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| 275 | #### Async for loop
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| 276 | for i in 1 2 3; do
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| 277 | echo $i
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| 278 | sleep 0.0$i
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| 279 | done &
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| 280 | wait
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| 281 | ## STDOUT:
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| 282 | 1
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| 283 | 2
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| 284 | 3
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| 285 | ## END
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| 286 | ## status: 0
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| 287 |
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| 288 | #### Background process doesn't affect parent
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| 289 | echo ${foo=1}
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| 290 | echo $foo
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| 291 | echo ${bar=2} &
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| 292 | wait
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| 293 | echo $bar # bar is NOT SET in the parent process
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| 294 | ## STDOUT:
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| 295 | 1
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| 296 | 1
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| 297 | 2
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| 298 |
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| 299 | ## END
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| 300 |
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| 301 | #### Background process and then a singleton pipeline
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| 302 |
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| 303 | # This was inspired by #416, although that symptom there was timing, so it's
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| 304 | # technically not a regression test. It's hard to test timing.
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| 305 |
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| 306 | { sleep 0.1; exit 42; } &
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| 307 | echo begin
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| 308 | ! true
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| 309 | echo end
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| 310 | wait $!
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| 311 | echo status=$?
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| 312 | ## STDOUT:
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| 313 | begin
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| 314 | end
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| 315 | status=42
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| 316 | ## END
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| 317 |
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| 318 | #### jobs prints one line per job
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| 319 | sleep 0.1 &
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| 320 | sleep 0.1 | cat &
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| 321 |
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| 322 | # dash doesn't print if it's not a terminal?
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| 323 | jobs | wc -l
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| 324 |
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| 325 | ## STDOUT:
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| 326 | 2
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| 327 | ## END
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| 328 | ## BUG dash STDOUT:
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| 329 | 0
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| 330 | ## END
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| 331 |
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| 332 | #### jobs -p prints one line per job
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| 333 | sleep 0.1 &
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| 334 | sleep 0.1 | cat &
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| 335 |
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| 336 | jobs -p > tmp.txt
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| 337 |
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| 338 | cat tmp.txt | wc -l # 2 lines, one for each job
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| 339 | cat tmp.txt | wc -w # each line is a single "word"
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| 340 |
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| 341 | ## STDOUT:
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| 342 | 2
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| 343 | 2
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| 344 | ## END
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| 345 |
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| 346 |
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| 347 | #### No stderr spew when shell is not interactive
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| 348 |
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| 349 | # in interactive shell, this prints 'Process' or 'Pipeline'
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| 350 | sleep 0.01 &
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| 351 | sleep 0.01 | cat &
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| 352 | wait
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| 353 |
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| 354 | ## STDOUT:
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| 355 | ## END
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| 356 | ## STDERR:
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| 357 | ## END
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| 358 |
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| 359 |
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| 360 | #### YSH wait --all
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| 361 | case $SH in dash|bash|mksh) exit ;; esac
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| 362 |
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| 363 | sleep 0.01 &
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| 364 | (exit 55) &
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| 365 | true &
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| 366 | wait
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| 367 | echo wait $?
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| 368 |
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| 369 | sleep 0.01 &
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| 370 | (exit 44) &
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| 371 | true &
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| 372 | wait --all
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| 373 | echo wait --all $?
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| 374 |
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| 375 | ## STDOUT:
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| 376 | wait 0
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| 377 | wait --all 1
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| 378 | ## END
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| 379 |
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| 380 | ## N-I dash/bash/mksh STDOUT:
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| 381 | ## END
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| 382 |
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| 383 | #### YSH wait --verbose
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| 384 | case $SH in dash|bash|mksh) exit ;; esac
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| 385 |
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| 386 | sleep 0.01 &
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| 387 | (exit 55) &
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| 388 | wait --verbose
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| 389 | echo wait $?
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| 390 |
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| 391 | (exit 44) &
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| 392 | sleep 0.01 &
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| 393 | wait --all --verbose
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| 394 | echo wait --all $?
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| 395 |
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| 396 | ## STDOUT:
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| 397 | wait 0
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| 398 | wait --all 1
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| 399 | ## END
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| 400 |
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| 401 | ## N-I dash/bash/mksh STDOUT:
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| 402 | ## END
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| 403 |
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| 404 | #### Signal message for killed background job
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| 405 | case $SH in dash|mksh) exit ;; esac
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| 406 |
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| 407 | sleep 1 &
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| 408 | kill -HUP $!
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| 409 | wait $! 2>err.txt
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| 410 | echo status=$?
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| 411 | grep -o "Hangup" err.txt
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| 412 | ## status: 0
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| 413 | ## STDOUT:
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| 414 | status=129
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| 415 | Hangup
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| 416 | ## END
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| 417 | ## STDERR:
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| 418 | ## END
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