Andrew's git - gitweb.git/blob - t/perf/perf-lib.sh

   1#!/bin/sh
   2#
   3# Copyright (c) 2011 Thomas Rast
   4#
   5# This program is free software: you can redistribute it and/or modify
   6# it under the terms of the GNU General Public License as published by
   7# the Free Software Foundation, either version 2 of the License, or
   8# (at your option) any later version.
   9#
  10# This program is distributed in the hope that it will be useful,
  11# but WITHOUT ANY WARRANTY; without even the implied warranty of
  12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13# GNU General Public License for more details.
  14#
  15# You should have received a copy of the GNU General Public License
  16# along with this program.  If not, see http://www.gnu.org/licenses/ .
  17
  18# do the --tee work early; it otherwise confuses our careful
  19# GIT_BUILD_DIR mangling
  20case "$GIT_TEST_TEE_STARTED, $* " in
  21done,*)
  22        # do not redirect again
  23        ;;
  24*' --tee '*|*' --va'*)
  25        mkdir -p test-results
  26        BASE=test-results/$(basename "$0" .sh)
  27        (GIT_TEST_TEE_STARTED=done ${SHELL-sh} "$0" "$@" 2>&1;
  28         echo $? > $BASE.exit) | tee $BASE.out
  29        test "$(cat $BASE.exit)" = 0
  30        exit
  31        ;;
  32esac
  33
  34TEST_DIRECTORY=$(pwd)/..
  35TEST_OUTPUT_DIRECTORY=$(pwd)
  36if test -z "$GIT_TEST_INSTALLED"; then
  37        perf_results_prefix=
  38else
  39        perf_results_prefix=$(printf "%s" "${GIT_TEST_INSTALLED%/bin-wrappers}" | tr -c "[a-zA-Z0-9]" "[_*]")"."
  40        # make the tested dir absolute
  41        GIT_TEST_INSTALLED=$(cd "$GIT_TEST_INSTALLED" && pwd)
  42fi
  43
  44TEST_NO_CREATE_REPO=t
  45
  46. ../test-lib.sh
  47
  48# Variables from test-lib that are normally internal to the tests; we
  49# need to export them for test_perf subshells
  50export TEST_DIRECTORY TRASH_DIRECTORY GIT_BUILD_DIR GIT_TEST_CMP
  51
  52perf_results_dir=$TEST_OUTPUT_DIRECTORY/test-results
  53mkdir -p "$perf_results_dir"
  54rm -f "$perf_results_dir"/$(basename "$0" .sh).subtests
  55
  56if test -z "$GIT_PERF_REPEAT_COUNT"; then
  57        GIT_PERF_REPEAT_COUNT=3
  58fi
  59die_if_build_dir_not_repo () {
  60        if ! ( cd "$TEST_DIRECTORY/.." &&
  61                    git rev-parse --build-dir >/dev/null 2>&1 ); then
  62                error "No $1 defined, and your build directory is not a repo"
  63        fi
  64}
  65
  66if test -z "$GIT_PERF_REPO"; then
  67        die_if_build_dir_not_repo '$GIT_PERF_REPO'
  68        GIT_PERF_REPO=$TEST_DIRECTORY/..
  69fi
  70if test -z "$GIT_PERF_LARGE_REPO"; then
  71        die_if_build_dir_not_repo '$GIT_PERF_LARGE_REPO'
  72        GIT_PERF_LARGE_REPO=$TEST_DIRECTORY/..
  73fi
  74
  75test_perf_create_repo_from () {
  76        test "$#" = 2 ||
  77        error "bug in the test script: not 2 parameters to test-create-repo"
  78        repo="$1"
  79        source="$2"
  80        source_git=$source/$(cd "$source" && git rev-parse --git-dir)
  81        mkdir -p "$repo/.git"
  82        (
  83                cd "$repo/.git" &&
  84                { cp -Rl "$source_git/objects" . 2>/dev/null ||
  85                        cp -R "$source_git/objects" .; } &&
  86                for stuff in "$source_git"/*; do
  87                        case "$stuff" in
  88                                */objects|*/hooks|*/config)
  89                                        ;;
  90                                *)
  91                                        cp -R "$stuff" . || break
  92                                        ;;
  93                        esac
  94                done &&
  95                cd .. &&
  96                git init -q &&
  97                mv .git/hooks .git/hooks-disabled 2>/dev/null
  98        ) || error "failed to copy repository '$source' to '$repo'"
  99}
 100
 101# call at least one of these to establish an appropriately-sized repository
 102test_perf_default_repo () {
 103        test_perf_create_repo_from "${1:-$TRASH_DIRECTORY}" "$GIT_PERF_REPO"
 104}
 105test_perf_large_repo () {
 106        if test "$GIT_PERF_LARGE_REPO" = "$GIT_BUILD_DIR"; then
 107                echo "warning: \$GIT_PERF_LARGE_REPO is \$GIT_BUILD_DIR." >&2
 108                echo "warning: This will work, but may not be a sufficiently large repo" >&2
 109                echo "warning: for representative measurements." >&2
 110        fi
 111        test_perf_create_repo_from "${1:-$TRASH_DIRECTORY}" "$GIT_PERF_LARGE_REPO"
 112}
 113test_checkout_worktree () {
 114        git checkout-index -u -a ||
 115        error "git checkout-index failed"
 116}
 117
 118# Performance tests should never fail.  If they do, stop immediately
 119immediate=t
 120
 121test_run_perf_ () {
 122        test_cleanup=:
 123        test_export_="test_cleanup"
 124        export test_cleanup test_export_
 125        /usr/bin/time -f "%E %U %S" -o test_time.$i "$SHELL" -c '
 126. '"$TEST_DIRECTORY"/test-lib-functions.sh'
 127test_export () {
 128        [ $# != 0 ] || return 0
 129        test_export_="$test_export_\\|$1"
 130        shift
 131        test_export "$@"
 132}
 133'"$1"'
 134ret=$?
 135set | sed -n "s'"/'/'\\\\''/g"';s/^\\($test_export_\\)/export '"'&'"'/p" >test_vars
 136exit $ret' >&3 2>&4
 137        eval_ret=$?
 138
 139        if test $eval_ret = 0 || test -n "$expecting_failure"
 140        then
 141                test_eval_ "$test_cleanup"
 142                . ./test_vars || error "failed to load updated environment"
 143        fi
 144        if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then
 145                echo ""
 146        fi
 147        return "$eval_ret"
 148}
 149
 150
 151test_perf () {
 152        test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
 153        test "$#" = 2 ||
 154        error "bug in the test script: not 2 or 3 parameters to test-expect-success"
 155        export test_prereq
 156        if ! test_skip "$@"
 157        then
 158                base=$(basename "$0" .sh)
 159                echo "$test_count" >>"$perf_results_dir"/$base.subtests
 160                echo "$1" >"$perf_results_dir"/$base.$test_count.descr
 161                if test -z "$verbose"; then
 162                        echo -n "perf $test_count - $1:"
 163                else
 164                        echo "perf $test_count - $1:"
 165                fi
 166                for i in $(test_seq 1 $GIT_PERF_REPEAT_COUNT); do
 167                        say >&3 "running: $2"
 168                        if test_run_perf_ "$2"
 169                        then
 170                                if test -z "$verbose"; then
 171                                        echo -n " $i"
 172                                else
 173                                        echo "* timing run $i/$GIT_PERF_REPEAT_COUNT:"
 174                                fi
 175                        else
 176                                test -z "$verbose" && echo
 177                                test_failure_ "$@"
 178                                break
 179                        fi
 180                done
 181                if test -z "$verbose"; then
 182                        echo " ok"
 183                else
 184                        test_ok_ "$1"
 185                fi
 186                base="$perf_results_dir"/"$perf_results_prefix$(basename "$0" .sh)"."$test_count"
 187                "$TEST_DIRECTORY"/perf/min_time.perl test_time.* >"$base".times
 188        fi
 189        echo >&3 ""
 190}
 191
 192# We extend test_done to print timings at the end (./run disables this
 193# and does it after running everything)
 194test_at_end_hook_ () {
 195        if test -z "$GIT_PERF_AGGREGATING_LATER"; then
 196                ( cd "$TEST_DIRECTORY"/perf && ./aggregate.perl $(basename "$0") )
 197        fi
 198}
 199
 200test_export () {
 201        export "$@"
 202}