| 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.{InternalStringArray,BashArray}
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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 | local osh_souffle=_bin/cxx-opt+souffle/osh
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| 41 | ninja $osh $osh_souffle
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| 42 |
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| 43 | # Souffle build is sometimes slightly faster
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| 44 | #local shells=(bash $osh $osh_souffle)
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| 45 |
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| 46 | local shells=(bash $osh)
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| 47 |
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| 48 | if false; then
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| 49 | echo ===
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| 50 | echo $osh SparseArray demo
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| 51 | echo
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| 52 | my-time sparse-$x $osh
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| 53 | fi
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| 54 |
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| 55 | for sh in ${shells[@]}; do
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| 56 | echo ===
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| 57 | echo $sh
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| 58 | echo
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| 59 | my-time $sh $0 $x
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| 60 | done
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| 61 | }
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| 62 |
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| 63 | compare-sum-shift() {
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| 64 | compare-x sum-shift
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| 65 | }
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| 66 |
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| 67 | compare-append-sparse() {
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| 68 | compare-x append-sparse
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| 69 | }
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| 70 |
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| 71 | compare-append-dense() {
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| 72 | compare-x append-dense
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| 73 | }
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| 74 |
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| 75 | #
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| 76 | # Workloads
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| 77 | #
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| 78 |
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| 79 | sum-shift() {
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| 80 | local n=${1:-1000}
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| 81 |
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| 82 | # Populate array 0 .. n-1
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| 83 | a=()
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| 84 | for (( i = 0; i < n; ++i )); do
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| 85 | a+=( $i )
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| 86 | #a+=( 1 )
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| 87 | done
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| 88 | #echo "${a[@]}"
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| 89 |
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| 90 | # Quadratic loop: sum all numbers, shift by 1
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| 91 | local sum=0
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| 92 | while true; do
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| 93 | local len=${#a[@]}
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| 94 | if test $len -eq 0; then
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| 95 | break
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| 96 | fi
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| 97 |
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| 98 | for (( i = 0; i < len; ++i )); do
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| 99 | sum=$(( sum + ${a[i]} ))
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| 100 | done
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| 101 |
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| 102 | #echo sum=$sum
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| 103 |
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| 104 | # Shift
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| 105 | a=( ${a[@]:1} )
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| 106 | done
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| 107 |
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| 108 | echo sum=$sum
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| 109 | }
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| 110 |
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| 111 | sparse-sum-shift() {
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| 112 | local osh=$1
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| 113 |
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| 114 | $osh <<'EOF'
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| 115 | shopt --set ysh:upgrade
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| 116 |
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| 117 | f() {
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| 118 | local n=${1:-1000}
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| 119 |
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| 120 | a=()
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| 121 | var sp = _a2sp(a) # empty sparse array
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| 122 |
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| 123 | # Populate BashArray 0 .. n-1
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| 124 | for (( i = 0; i < n; ++i )); do
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| 125 | to_append=( $i )
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| 126 | call _opsp(sp, 'append', to_append)
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| 127 | done
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| 128 |
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| 129 | #echo "${a[@]}"
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| 130 | echo "length $[_opsp(sp, 'len')]"
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| 131 | #echo SUBST @[_opsp(sp, 'subst')]
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| 132 | #echo KEYS @[_opsp(sp, 'keys')]
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| 133 |
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| 134 | var sum = 0
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| 135 |
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| 136 | while (true) {
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| 137 | var length = _opsp(sp, 'len')
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| 138 | if (length === 0) {
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| 139 | break
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| 140 | }
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| 141 |
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| 142 | #echo ZERO $sum $[_opsp(sp, 'get', 0)]
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| 143 | #echo ONE $sum $[_opsp(sp, 'get', 1)]
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| 144 | for i in (0 ..< length) {
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| 145 | setvar sum += _opsp(sp, 'get', i)
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| 146 | }
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| 147 |
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| 148 | #echo sum=$sum
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| 149 |
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| 150 | # Slice to InternalStringArray
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| 151 | var a = _opsp(sp, 'slice', 1, length)
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| 152 |
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| 153 | # Convert back - is this slow?
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| 154 | setvar sp = _a2sp(a)
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| 155 | }
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| 156 |
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| 157 | echo sum=$sum
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| 158 | }
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| 159 |
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| 160 | f
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| 161 |
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| 162 | EOF
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| 163 | }
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| 164 |
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| 165 | append-sparse() {
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| 166 | local n=${1:-24} # up to 2^n
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| 167 | local m=${2:-2000}
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| 168 |
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| 169 | to_append=( $(seq $m) ) # split words
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| 170 |
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| 171 | a=()
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| 172 | for (( i = 0; i < n; ++i )) {
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| 173 | a[$(( 1 << i ))]=$i
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| 174 | a+=( ${to_append[@]} )
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| 175 | }
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| 176 | #echo ${a[@]}
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| 177 | #echo ${!a[@]}
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| 178 | echo ${#a[@]}
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| 179 | }
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| 180 |
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| 181 | sparse-append-sparse() {
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| 182 | local osh=${1:-_bin/cxx-opt/osh}
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| 183 | local n=${2:-24}
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| 184 | local m=${3:-2000}
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| 185 |
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| 186 | NUM_ITERS=$n TO_APPEND=$m $osh <<'EOF'
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| 187 | n=$NUM_ITERS
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| 188 | m=$TO_APPEND
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| 189 | to_append=( $(seq $m) ) # split words before ysh:upgrade
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| 190 |
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| 191 |
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| 192 | shopt --set ysh:upgrade
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| 193 |
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| 194 | f() {
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| 195 | a=()
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| 196 | var sp = _a2sp(a)
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| 197 |
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| 198 | for (( i = 0; i < n; ++i )) {
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| 199 | call _opsp(sp, 'set', 1 << i, str(i))
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| 200 | call _opsp(sp, 'append', to_append)
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| 201 |
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| 202 | #time call _opsp(sp, 'append', to_append)
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| 203 | #echo $[_opsp(sp, 'len')]
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| 204 | #echo
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| 205 | }
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| 206 | echo $[_opsp(sp, 'len')]
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| 207 | #echo @[_opsp(sp, 'subst')]
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| 208 | #echo @[_opsp(sp, 'keys')]
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| 209 | }
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| 210 |
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| 211 | f
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| 212 | EOF
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| 213 | }
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| 214 |
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| 215 | append-dense() {
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| 216 | local n=${1:-24} # up to 2^n
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| 217 | local m=${2:-2000}
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| 218 |
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| 219 | to_append=( $(seq $m) ) # split words
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| 220 |
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| 221 | a=()
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| 222 | for (( i = 0; i < n; ++i )) {
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| 223 | a+=( ${to_append[@]} )
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| 224 | }
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| 225 | #echo ${a[@]}
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| 226 | #echo ${!a[@]}
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| 227 | echo ${#a[@]}
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| 228 | }
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| 229 |
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| 230 | sparse-append-dense() {
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| 231 | local osh=${1:-_bin/cxx-opt/osh}
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| 232 | local n=${2:-24}
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| 233 | local m=${3:-2000}
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| 234 |
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| 235 | NUM_ITERS=$n TO_APPEND=$m $osh <<'EOF'
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| 236 | n=$NUM_ITERS
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| 237 | m=$TO_APPEND
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| 238 | to_append=( $(seq $m) ) # split words before ysh:upgrade
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| 239 |
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| 240 | shopt --set ysh:upgrade
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| 241 |
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| 242 | f() {
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| 243 | a=()
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| 244 | var sp = _a2sp(a)
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| 245 |
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| 246 | for (( i = 0; i < n; ++i )) {
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| 247 | #call _opsp(sp, 'set', 1 << i, str(i))
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| 248 | call _opsp(sp, 'append', to_append)
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| 249 |
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| 250 | #time call _opsp(sp, 'append', to_append)
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| 251 | #echo $[_opsp(sp, 'len')]
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| 252 | #echo
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| 253 | }
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| 254 | echo $[_opsp(sp, 'len')]
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| 255 | #echo @[_opsp(sp, 'subst')]
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| 256 | #echo @[_opsp(sp, 'keys')]
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| 257 | }
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| 258 |
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| 259 | f
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| 260 | EOF
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| 261 | }
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| 262 |
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| 263 | demo() {
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| 264 | # Compiles faster
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| 265 | #local osh=_bin/cxx-asan/osh
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| 266 |
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| 267 | local osh=_bin/cxx-opt/osh
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| 268 |
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| 269 | ninja $osh
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| 270 |
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| 271 | $osh <<'EOF'
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| 272 |
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| 273 | # Create regular bash array
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| 274 |
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| 275 | a=( {1..100} )
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| 276 | a[1000]='sparse'
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| 277 | echo $[type(a)]
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| 278 |
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| 279 | # Time O(n^2) slicing in a loop
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| 280 |
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| 281 | time while true; do
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| 282 | # Convert it to the Dict[BigInt, str] representation
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| 283 | var sp = _a2sp(a)
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| 284 | #echo $[type(sp)]
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| 285 |
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| 286 | var len = _opsp(sp, 'len')
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| 287 | #echo "sparse length $len"
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| 288 |
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| 289 | setvar a = _opsp(sp, 'slice', 1, 2000)
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| 290 | #echo "array length ${#a[@]}"
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| 291 | echo "array ${a[@]}"
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| 292 |
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| 293 | if test ${#a[@]} -eq 0; then
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| 294 | break
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| 295 | fi
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| 296 | done
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| 297 | EOF
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| 298 |
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| 299 | return
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| 300 |
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| 301 | # Copied from spec/ble-idioms.test.sh
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| 302 | $osh <<'EOF'
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| 303 |
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| 304 | a=( foo {25..27} bar )
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| 305 |
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| 306 | a[10]='sparse'
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| 307 |
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| 308 | var sp = _a2sp(a)
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| 309 | echo $[type(sp)]
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| 310 |
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| 311 | echo len: $[_opsp(sp, 'len')]
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| 312 |
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| 313 | #echo $[len(sp)]
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| 314 |
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| 315 | shopt -s ysh:upgrade
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| 316 |
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| 317 | echo subst: @[_opsp(sp, 'subst')]
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| 318 | echo keys: @[_opsp(sp, 'keys')]
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| 319 |
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| 320 | echo slice: @[_opsp(sp, 'slice', 2, 5)]
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| 321 |
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| 322 | call _opsp(sp, 'set', 0, 'set0')
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| 323 |
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| 324 | echo get0: $[_opsp(sp, 'get', 0)]
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| 325 | echo get1: $[_opsp(sp, 'get', 1)]
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| 326 |
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| 327 | to_append=(x y)
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| 328 | call _opsp(sp, 'append', to_append)
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| 329 | echo subst: @[_opsp(sp, 'subst')]
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| 330 | echo keys: @[_opsp(sp, 'keys')]
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| 331 |
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| 332 | echo ---
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| 333 |
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| 334 | # Sparse
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| 335 | var d = {
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| 336 | '1': 'a',
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| 337 | '10': 'b',
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| 338 | '100': 'c',
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| 339 | '1000': 'd',
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| 340 | '10000': 'e',
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| 341 | '100000': 'f',
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| 342 | }
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| 343 |
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| 344 | var sp2 = _d2sp(d)
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| 345 |
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| 346 | echo len: $[_opsp(sp2, 'len')]
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| 347 | echo subst: @[_opsp(sp2, 'subst')]
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| 348 |
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| 349 | EOF
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| 350 |
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| 351 | }
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| 352 |
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| 353 | "$@"
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