| 1 | #!/usr/bin/env bash
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| 2 | #
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| 3 | # Test sparse array
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| 4 | #
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| 5 | # Relevant files:
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| 6 | #
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| 7 | # test/ble-idioms.test.sh
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| 8 | #
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| 9 | # core/shell.py defines these functions:
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| 10 | # _a2sp
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| 11 | # _opsp
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| 12 | # builtin/func_misc.py is where they are implemented
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| 13 | #
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| 14 | # core/value.asdl defines value.{BashArray,SparseArray}
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| 15 | #
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| 16 | # _gen/core/value.asdl.* - generated from value.asdl
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| 17 | #
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| 18 | # _gen/bin/oils_for_unix.mycpp.cc has the translation of
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| 19 |
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| 20 | #
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| 21 | # Usage:
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| 22 | # demo/sparse-array.sh <function name>
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| 23 |
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| 24 | TIMEFORMAT='%U'
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| 25 |
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| 26 | set -o nounset
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| 27 | set -o pipefail
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| 28 | set -o errexit
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| 29 |
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| 30 | my-time() {
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| 31 | local tmp=/tmp/sparse-array
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| 32 | { time "$@"; } 2> $tmp
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| 33 | echo "$(cat $tmp) seconds"
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| 34 | }
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| 35 |
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| 36 | compare-x() {
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| 37 | local x=$1
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| 38 |
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| 39 | local osh=_bin/cxx-opt/osh
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| 40 | ninja $osh
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| 41 |
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| 42 | echo ===
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| 43 | echo $osh SparseArray
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| 44 | echo
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| 45 | my-time sparse-$x $osh
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| 46 |
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| 47 | for sh in bash $osh; do
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| 48 | echo ===
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| 49 | echo $sh
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| 50 | echo
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| 51 | my-time $sh $0 $x
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| 52 | done
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| 53 | }
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| 54 |
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| 55 | compare-sum-shift() {
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| 56 | compare-x sum-shift
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| 57 | }
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| 58 |
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| 59 | compare-append-sparse() {
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| 60 | compare-x append-sparse
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| 61 | }
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| 62 |
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| 63 | compare-append-dense() {
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| 64 | compare-x append-dense
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| 65 | }
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| 66 |
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| 67 | #
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| 68 | # Workloads
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| 69 | #
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| 70 |
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| 71 | sum-shift() {
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| 72 | local n=${1:-1000}
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| 73 |
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| 74 | # Populate array 0 .. n-1
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| 75 | a=()
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| 76 | for (( i = 0; i < n; ++i )); do
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| 77 | a+=( $i )
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| 78 | #a+=( 1 )
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| 79 | done
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| 80 | #echo "${a[@]}"
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| 81 |
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| 82 | # Quadratic loop: sum all numbers, shift by 1
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| 83 | local sum=0
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| 84 | while true; do
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| 85 | local len=${#a[@]}
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| 86 | if test $len -eq 0; then
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| 87 | break
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| 88 | fi
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| 89 |
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| 90 | for (( i = 0; i < len; ++i )); do
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| 91 | sum=$(( sum + ${a[i]} ))
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| 92 | done
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| 93 |
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| 94 | #echo sum=$sum
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| 95 |
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| 96 | # Shift
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| 97 | a=( ${a[@]:1} )
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| 98 | done
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| 99 |
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| 100 | echo sum=$sum
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| 101 | }
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| 102 |
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| 103 | sparse-sum-shift() {
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| 104 | local osh=$1
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| 105 |
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| 106 | $osh <<'EOF'
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| 107 | shopt --set ysh:upgrade
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| 108 |
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| 109 | f() {
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| 110 | local n=${1:-1000}
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| 111 |
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| 112 | a=()
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| 113 | var sp = _a2sp(a) # empty sparse array
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| 114 |
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| 115 | # Populate SparseArray 0 .. n-1
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| 116 | for (( i = 0; i < n; ++i )); do
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| 117 | to_append=( $i )
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| 118 | call _opsp(sp, 'append', to_append)
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| 119 | done
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| 120 |
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| 121 | #echo "${a[@]}"
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| 122 | echo "length $[_opsp(sp, 'len')]"
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| 123 | #echo SUBST @[_opsp(sp, 'subst')]
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| 124 | #echo KEYS @[_opsp(sp, 'keys')]
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| 125 |
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| 126 | var sum = 0
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| 127 |
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| 128 | while (true) {
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| 129 | var length = _opsp(sp, 'len')
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| 130 | if (length === 0) {
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| 131 | break
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| 132 | }
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| 133 |
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| 134 | #echo ZERO $sum $[_opsp(sp, 'get', 0)]
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| 135 | #echo ONE $sum $[_opsp(sp, 'get', 1)]
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| 136 | for i in (0 .. length) {
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| 137 | setvar sum += _opsp(sp, 'get', i)
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| 138 | }
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| 139 |
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| 140 | #echo sum=$sum
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| 141 |
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| 142 | # Slice to BashArray
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| 143 | var a = _opsp(sp, 'slice', 1, length)
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| 144 |
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| 145 | # Convert back - is this slow?
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| 146 | setvar sp = _a2sp(a)
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| 147 | }
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| 148 |
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| 149 | echo sum=$sum
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| 150 | }
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| 151 |
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| 152 | f
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| 153 |
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| 154 | EOF
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| 155 | }
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| 156 |
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| 157 | append-sparse() {
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| 158 | local n=${1:-24} # up to 2^n
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| 159 | local m=${2:-2000}
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| 160 |
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| 161 | to_append=( $(seq $m) ) # split words
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| 162 |
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| 163 | a=()
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| 164 | for (( i = 0; i < n; ++i )) {
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| 165 | a[$(( 1 << i ))]=$i
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| 166 | a+=( ${to_append[@]} )
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| 167 | }
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| 168 | #echo ${a[@]}
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| 169 | #echo ${!a[@]}
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| 170 | echo ${#a[@]}
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| 171 | }
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| 172 |
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| 173 | sparse-append-sparse() {
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| 174 | local osh=${1:-_bin/cxx-opt/osh}
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| 175 | local n=${2:-24}
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| 176 | local m=${3:-2000}
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| 177 |
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| 178 | NUM_ITERS=$n TO_APPEND=$m $osh <<'EOF'
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| 179 | n=$NUM_ITERS
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| 180 | m=$TO_APPEND
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| 181 | to_append=( $(seq $m) ) # split words before ysh:upgrade
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| 182 |
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| 183 |
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| 184 | shopt --set ysh:upgrade
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| 185 |
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| 186 | f() {
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| 187 | a=()
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| 188 | var sp = _a2sp(a)
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| 189 |
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| 190 | for (( i = 0; i < n; ++i )) {
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| 191 | call _opsp(sp, 'set', 1 << i, str(i))
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| 192 | call _opsp(sp, 'append', to_append)
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| 193 |
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| 194 | #time call _opsp(sp, 'append', to_append)
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| 195 | #echo $[_opsp(sp, 'len')]
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| 196 | #echo
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| 197 | }
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| 198 | echo $[_opsp(sp, 'len')]
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| 199 | #echo @[_opsp(sp, 'subst')]
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| 200 | #echo @[_opsp(sp, 'keys')]
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| 201 | }
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| 202 |
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| 203 | f
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| 204 | EOF
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| 205 | }
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| 206 |
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| 207 | append-dense() {
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| 208 | local n=${1:-24} # up to 2^n
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| 209 | local m=${2:-2000}
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| 210 |
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| 211 | to_append=( $(seq $m) ) # split words
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| 212 |
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| 213 | a=()
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| 214 | for (( i = 0; i < n; ++i )) {
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| 215 | a+=( ${to_append[@]} )
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| 216 | }
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| 217 | #echo ${a[@]}
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| 218 | #echo ${!a[@]}
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| 219 | echo ${#a[@]}
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| 220 | }
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| 221 |
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| 222 | sparse-append-dense() {
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| 223 | local osh=${1:-_bin/cxx-opt/osh}
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| 224 | local n=${2:-24}
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| 225 | local m=${3:-2000}
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| 226 |
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| 227 | NUM_ITERS=$n TO_APPEND=$m $osh <<'EOF'
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| 228 | n=$NUM_ITERS
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| 229 | m=$TO_APPEND
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| 230 | to_append=( $(seq $m) ) # split words before ysh:upgrade
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| 231 |
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| 232 | shopt --set ysh:upgrade
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| 233 |
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| 234 | f() {
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| 235 | a=()
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| 236 | var sp = _a2sp(a)
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| 237 |
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| 238 | for (( i = 0; i < n; ++i )) {
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| 239 | #call _opsp(sp, 'set', 1 << i, str(i))
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| 240 | call _opsp(sp, 'append', to_append)
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| 241 |
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| 242 | #time call _opsp(sp, 'append', to_append)
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| 243 | #echo $[_opsp(sp, 'len')]
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| 244 | #echo
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| 245 | }
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| 246 | echo $[_opsp(sp, 'len')]
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| 247 | #echo @[_opsp(sp, 'subst')]
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| 248 | #echo @[_opsp(sp, 'keys')]
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| 249 | }
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| 250 |
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| 251 | f
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| 252 | EOF
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| 253 | }
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| 254 |
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| 255 | demo() {
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| 256 | # Compiles faster
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| 257 | #local osh=_bin/cxx-asan/osh
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| 258 |
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| 259 | local osh=_bin/cxx-opt/osh
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| 260 |
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| 261 | ninja $osh
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| 262 |
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| 263 | $osh <<'EOF'
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| 264 |
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| 265 | # Create regular bash array
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| 266 |
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| 267 | a=( {1..100} )
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| 268 | a[1000]='sparse'
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| 269 | echo $[type(a)]
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| 270 |
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| 271 | # Time O(n^2) slicing in a loop
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| 272 |
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| 273 | time while true; do
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| 274 | # Convert it to the Dict[BigInt, str] representation
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| 275 | var sp = _a2sp(a)
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| 276 | #echo $[type(sp)]
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| 277 |
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| 278 | var len = _opsp(sp, 'len')
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| 279 | #echo "sparse length $len"
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| 280 |
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| 281 | setvar a = _opsp(sp, 'slice', 1, 2000)
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| 282 | #echo "array length ${#a[@]}"
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| 283 | echo "array ${a[@]}"
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| 284 |
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| 285 | if test ${#a[@]} -eq 0; then
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| 286 | break
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| 287 | fi
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| 288 | done
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| 289 | EOF
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| 290 |
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| 291 | return
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| 292 |
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| 293 | # Copied from spec/ble-idioms.test.sh
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| 294 | $osh <<'EOF'
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| 295 |
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| 296 | a=( foo {25..27} bar )
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| 297 |
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| 298 | a[10]='sparse'
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| 299 |
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| 300 | var sp = _a2sp(a)
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| 301 | echo $[type(sp)]
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| 302 |
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| 303 | echo len: $[_opsp(sp, 'len')]
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| 304 |
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| 305 | #echo $[len(sp)]
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| 306 |
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| 307 | shopt -s ysh:upgrade
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| 308 |
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| 309 | echo subst: @[_opsp(sp, 'subst')]
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| 310 | echo keys: @[_opsp(sp, 'keys')]
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| 311 |
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| 312 | echo slice: @[_opsp(sp, 'slice', 2, 5)]
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| 313 |
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| 314 | call _opsp(sp, 'set', 0, 'set0')
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| 315 |
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| 316 | echo get0: $[_opsp(sp, 'get', 0)]
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| 317 | echo get1: $[_opsp(sp, 'get', 1)]
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| 318 |
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| 319 | to_append=(x y)
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| 320 | call _opsp(sp, 'append', to_append)
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| 321 | echo subst: @[_opsp(sp, 'subst')]
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| 322 | echo keys: @[_opsp(sp, 'keys')]
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| 323 |
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| 324 | echo ---
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| 325 |
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| 326 | # Sparse
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| 327 | var d = {
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| 328 | '1': 'a',
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| 329 | '10': 'b',
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| 330 | '100': 'c',
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| 331 | '1000': 'd',
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| 332 | '10000': 'e',
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| 333 | '100000': 'f',
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| 334 | }
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| 335 |
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| 336 | var sp2 = _d2sp(d)
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| 337 |
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| 338 | echo len: $[_opsp(sp2, 'len')]
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| 339 | echo subst: @[_opsp(sp2, 'subst')]
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| 340 |
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| 341 | EOF
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| 342 |
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| 343 | }
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| 344 |
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| 345 | "$@"
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