05857c1ba0
This program allows to compare the performance of different POSIX shells (e.g. sh, bash, dash, ksh, zsh, ...). A number of sample scripts are included and can be easily extended to cover more areas.
80 lines
2.5 KiB
Text
80 lines
2.5 KiB
Text
--- shellbench.orig 2020-08-06 15:07:20 UTC
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+++ shellbench
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@@ -12,6 +12,8 @@ COUNT_WIDTH=${SHELLBENCH_COUNT_WIDTH:-10}
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SHOW_ERROR=''
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CORRECTION_MODE=''
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NULLLOOP_COUNT=''
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+ALL_SAMPLES=''
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+SAMPLE_DIR=%%DATADIR%%
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usage() {
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cat<<HERE
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@@ -20,10 +22,19 @@ Usage: shellbench [options] files...
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-s, --shell SHELL[,SHELL...] The shell(s) to run the benchmark. [default: sh]
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-t, --time SECONDS Benchmark execution time. (SECONDS > 0) [default: 3]
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-w, --warmup SECONDS Benchmark preparation time. (SECONDS > 0) [default: 1]
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+ -a, --allsamples Execute all sample scripts
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-c, --correct Enable correction mode to eliminate loop overhead.
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-e, --error Display error details.
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-h, --help You're looking at it.
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+ -l, --listsamples List names of the sample scripts
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+
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+The sample scripts can be found in %%DATADIR%% .
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HERE
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+if [ -r "%%DOCSDIR%%/README.md" ]; then
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+cat<<HERE
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+Their format is documented in %%DOCSDIR%%/README.md .
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+HERE
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+fi
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}
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preprocess() {
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@@ -313,6 +324,14 @@ display_footer() {
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PARAMS=''
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+all_samples() {
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+ PARAMS="$PARAMS "$(echo %%DATADIR%%/*.sh)
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+}
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+
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+list_samples() {
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+ cd %%DATADIR%%; echo *.sh
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+}
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+
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abort() { echo "$@" >&2; exit 1; }
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unknown() { abort "Unrecognized option '$1'"; }
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required() { [ $# -gt 1 ] || abort "Option '$1' requires an argument"; }
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@@ -327,9 +346,11 @@ parse_options() {
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-s | --shell ) required "$@" && shift; SHELLS=$1 ;;
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-t | --time ) required "$@" && shift; BENCHMARK_TIME=$1 ;;
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-w | --warmup ) required "$@" && shift; WARMUP_TIME=$1 ;;
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+ -a | --allsamples ) ALL_SAMPLES=1 ;;
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-c | --correct) CORRECTION_MODE=1 ;;
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-e | --error ) SHOW_ERROR=1 ;;
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-h | --help ) usage; exit ;;
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+ -l | --listsamples ) list_samples; exit ;;
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--) shift; params PARAMS $(($OPTIND - $#)) $OPTIND; break ;;
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-?*) unknown "$@" ;;
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*) param PARAMS $(($OPTIND - $#))
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@@ -342,6 +363,11 @@ ${__SOURCED__:+return}
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trap '' HUP
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parse_options "$@"
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+
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+[ "$ALL_SAMPLES" ] && all_samples
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+
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+[ -z "$PARAMS" ] && { usage; exit; }
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+
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eval "set -- $PARAMS"
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[ "$CORRECTION_MODE" ] && NULLLOOP_COUNT=${SHELLBENCH_NULLLOOP_COUNT:-}
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@@ -352,6 +378,9 @@ display_header "$SHELLS"
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$(printf '%s\n' '#bench "loop only"' '@begin' '@end' | preprocess)
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HERE
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for file in "$@"; do
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+ [ -r "$file" ] || if [ -r "%%DATADIR%%/$file" ]; then
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+ file="%%DATADIR%%/$file"
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+ fi
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preprocess < "$file" | process "${file##*/}"
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done
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display_footer
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