| 1 | #!/usr/bin/env bash
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| 2 | #
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| 3 | # Test how long it takes to read many files
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| 4 |
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| 5 | big-stream() {
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| 6 | cat */*.py
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| 7 | # Python messes up here!
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| 8 | #*/*/*.py
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| 9 | }
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| 10 |
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| 11 | OSH=_bin/cxx-opt/osh
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| 12 | YSH=_bin/cxx-opt/ysh
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| 13 |
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| 14 | setup() {
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| 15 | local n=${1:-1} # how many copies
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| 16 |
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| 17 | for i in $(seq $n); do
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| 18 | big-stream
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| 19 | done > $BIG_FILE
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| 20 |
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| 21 | wc -l $BIG_FILE
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| 22 |
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| 23 | ninja $OSH $YSH
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| 24 | }
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| 25 |
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| 26 | py3-count() {
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| 27 | echo '=== python3'
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| 28 |
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| 29 | # Buffered I/O is much faster
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| 30 | python3 -c '
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| 31 | import sys
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| 32 | i = 0
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| 33 | for line in sys.stdin:
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| 34 | i += 1
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| 35 | print(i)
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| 36 | '
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| 37 | }
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| 38 |
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| 39 | awk-count() {
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| 40 | echo '=== awk'
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| 41 | awk '{ i += 1 } END { print i } '
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| 42 | }
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| 43 |
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| 44 | exec-ysh-count() {
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| 45 | local do_trap=${1:-}
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| 46 |
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| 47 | echo '=== ysh'
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| 48 |
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| 49 | local code='
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| 50 | var i = 0
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| 51 | for _ in <> {
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| 52 | setvar i += 1
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| 53 | }
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| 54 | echo $i
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| 55 | '
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| 56 |
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| 57 | if test -n "$do_trap"; then
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| 58 | # Register BEFORE creating pipeline
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| 59 | #trap usr1-handler USR1
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| 60 | code="
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| 61 | trap 'echo usr1 in \$\$' USR1
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| 62 |
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| 63 | $code
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| 64 | "
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| 65 | fi
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| 66 |
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| 67 | # New buffered read!
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| 68 | exec $YSH -c "$code"
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| 69 | }
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| 70 |
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| 71 | usr1-handler() {
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| 72 | echo "pid $$ got usr1"
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| 73 | }
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| 74 |
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| 75 | exec-sh-count() {
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| 76 | local sh=$1
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| 77 | local do_trap=${2:-}
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| 78 |
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| 79 | echo "pid = $$"
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| 80 |
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| 81 | echo === $sh
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| 82 |
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| 83 | local code='
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| 84 | i=0
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| 85 | while read -r line; do
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| 86 | i=$(( i + 1 ))
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| 87 | done
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| 88 | echo $i
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| 89 | '
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| 90 |
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| 91 | if test -n "$do_trap"; then
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| 92 | # Register BEFORE creating pipeline
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| 93 | #trap usr1-handler USR1
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| 94 | code="
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| 95 | trap 'echo usr1 in \$\$' USR1
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| 96 |
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| 97 | $code
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| 98 | "
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| 99 | fi
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| 100 | #echo "$code"
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| 101 |
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| 102 | # need exec here for trap-demo
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| 103 | exec $sh -c "$code"
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| 104 | }
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| 105 |
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| 106 | readonly BIG_FILE=_tmp/lines.txt
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| 107 |
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| 108 | compare() {
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| 109 |
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| 110 | echo '=== wc'
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| 111 | time wc -l < $BIG_FILE # warmup
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| 112 | echo
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| 113 |
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| 114 | time py3-count < $BIG_FILE
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| 115 | echo
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| 116 |
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| 117 | time awk-count < $BIG_FILE
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| 118 | echo
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| 119 |
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| 120 | time $0 exec-ysh-count < $BIG_FILE
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| 121 | echo
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| 122 |
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| 123 | for sh in dash bash $OSH; do
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| 124 | # need $0 because it exec
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| 125 | time $0 exec-sh-count $sh < $BIG_FILE
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| 126 | echo
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| 127 | done
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| 128 | }
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| 129 |
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| 130 | sh-count-with-trap() {
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| 131 | local sh=$1
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| 132 |
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| 133 | local -a argv
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| 134 | case $sh in
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| 135 | *ysh)
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| 136 | argv=(exec-ysh-count T)
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| 137 | ;;
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| 138 | *)
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| 139 | argv=(exec-sh-count $sh T)
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| 140 | ;;
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| 141 | esac
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| 142 |
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| 143 | "${argv[@]}" < $BIG_FILE &
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| 144 |
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| 145 | #$0 sh-count bash T &
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| 146 | #$0 sh-count dash T &
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| 147 |
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| 148 | local pid=$!
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| 149 | echo "background = $pid"
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| 150 | pstree -p $pid
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| 151 | echo
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| 152 |
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| 153 | #wait
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| 154 | #echo status=$?
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| 155 | #return
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| 156 |
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| 157 | while true; do
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| 158 | # wait for USR1 to be registered
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| 159 | sleep 0.05
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| 160 |
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| 161 | kill -s USR1 $pid
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| 162 | local status=$?
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| 163 |
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| 164 | echo "kill status: $status"
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| 165 | if test $status -ne 0; then
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| 166 | break
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| 167 | fi
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| 168 |
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| 169 | done
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| 170 |
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| 171 | wait
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| 172 | echo status=$?
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| 173 | }
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| 174 |
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| 175 | compare-trap() {
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| 176 | for sh in $YSH dash bash $OSH; do
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| 177 | sh-count-with-trap $sh
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| 178 | echo
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| 179 | echo
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| 180 | done
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| 181 | }
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| 182 |
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| 183 | "$@"
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| 184 |
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