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
  20 case "$GIT_TEST_TEE_STARTED, $* " in
  21 done,*)
  22         # do not redirect again
  23         ;;
  24 *' --tee '*|*' --va'*)
  25         mkdir -p test-results
  26         BASE=test-results/$(basename "$0" .sh)
  27         (GIT_TEST_TEE_STARTED=done ${SHELL-sh} "$0" "$@" 2>&1;
  28          echo $? > $BASE.exit) | tee $BASE.out
  29         test "$(cat $BASE.exit)" = 0
  30         exit
  31         ;;
  32 esac
  33
  34 TEST_DIRECTORY=$(pwd)/..
  35 TEST_OUTPUT_DIRECTORY=$(pwd)
  36 if test -z "$GIT_TEST_INSTALLED"; then
  37         perf_results_prefix=
  38 else
  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)
  42 fi
  43
  44 TEST_NO_CREATE_REPO=t
  45 TEST_NO_MALLOC_CHECK=t
  46
  47 . ../test-lib.sh
  48
  49 # Variables from test-lib that are normally internal to the tests; we
  50 # need to export them for test_perf subshells
  51 export TEST_DIRECTORY TRASH_DIRECTORY GIT_BUILD_DIR GIT_TEST_CMP
  52
  53 perf_results_dir=$TEST_OUTPUT_DIRECTORY/test-results
  54 mkdir -p "$perf_results_dir"
  55 rm -f "$perf_results_dir"/$(basename "$0" .sh).subtests
  56
  57 if test -z "$GIT_PERF_REPEAT_COUNT"; then
  58         GIT_PERF_REPEAT_COUNT=3
  59 fi
  60 die_if_build_dir_not_repo () {
  61         if ! ( cd "$TEST_DIRECTORY/.." &&
  62                     git rev-parse --build-dir >/dev/null 2>&1 ); then
  63                 error "No $1 defined, and your build directory is not a repo"
  64         fi
  65 }
  66
  67 if test -z "$GIT_PERF_REPO"; then
  68         die_if_build_dir_not_repo '$GIT_PERF_REPO'
  69         GIT_PERF_REPO=$TEST_DIRECTORY/..
  70 fi
  71 if test -z "$GIT_PERF_LARGE_REPO"; then
  72         die_if_build_dir_not_repo '$GIT_PERF_LARGE_REPO'
  73         GIT_PERF_LARGE_REPO=$TEST_DIRECTORY/..
  74 fi
  75
  76 test_perf_create_repo_from () {
  77         test "$#" = 2 ||
  78         error "bug in the test script: not 2 parameters to test-create-repo"
  79         repo="$1"
  80         source="$2"
  81         source_git=$source/$(cd "$source" && git rev-parse --git-dir)
  82         mkdir -p "$repo/.git"
  83         (
  84                 cd "$repo/.git" &&
  85                 { cp -Rl "$source_git/objects" . 2>/dev/null ||
  86                         cp -R "$source_git/objects" .; } &&
  87                 for stuff in "$source_git"/*; do
  88                         case "$stuff" in
  89                                 */objects|*/hooks|*/config)
  90                                         ;;
  91                                 *)
  92                                         cp -R "$stuff" . || break
  93                                         ;;
  94                         esac
  95                 done &&
  96                 cd .. &&
  97                 git init -q &&
  98                 mv .git/hooks .git/hooks-disabled 2>/dev/null
  99         ) || error "failed to copy repository '$source' to '$repo'"
 100 }
 101
 102 # call at least one of these to establish an appropriately-sized repository
 103 test_perf_default_repo () {
 104         test_perf_create_repo_from "${1:-$TRASH_DIRECTORY}" "$GIT_PERF_REPO"
 105 }
 106 test_perf_large_repo () {
 107         if test "$GIT_PERF_LARGE_REPO" = "$GIT_BUILD_DIR"; then
 108                 echo "warning: \$GIT_PERF_LARGE_REPO is \$GIT_BUILD_DIR." >&2
 109                 echo "warning: This will work, but may not be a sufficiently large repo" >&2
 110                 echo "warning: for representative measurements." >&2
 111         fi
 112         test_perf_create_repo_from "${1:-$TRASH_DIRECTORY}" "$GIT_PERF_LARGE_REPO"
 113 }
 114 test_checkout_worktree () {
 115         git checkout-index -u -a ||
 116         error "git checkout-index failed"
 117 }
 118
 119 # Performance tests should never fail.  If they do, stop immediately
 120 immediate=t
 121
 122 test_run_perf_ () {
 123         test_cleanup=:
 124         test_export_="test_cleanup"
 125         export test_cleanup test_export_
 126         /usr/bin/time -f "%E %U %S" -o test_time.$i "$SHELL" -c '
 127 . '"$TEST_DIRECTORY"/test-lib-functions.sh'
 128 test_export () {
 129         [ $# != 0 ] || return 0
 130         test_export_="$test_export_\\|$1"
 131         shift
 132         test_export "$@"
 133 }
 134 '"$1"'
 135 ret=$?
 136 set | sed -n "s'"/'/'\\\\''/g"';s/^\\($test_export_\\)/export '"'&'"'/p" >test_vars
 137 exit $ret' >&3 2>&4
 138         eval_ret=$?
 139
 140         if test $eval_ret = 0 || test -n "$expecting_failure"
 141         then
 142                 test_eval_ "$test_cleanup"
 143                 . ./test_vars || error "failed to load updated environment"
 144         fi
 145         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then
 146                 echo ""
 147         fi
 148         return "$eval_ret"
 149 }
 150
 151
 152 test_perf () {
 153         test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
 154         test "$#" = 2 ||
 155         error "bug in the test script: not 2 or 3 parameters to test-expect-success"
 156         export test_prereq
 157         if ! test_skip "$@"
 158         then
 159                 base=$(basename "$0" .sh)
 160                 echo "$test_count" >>"$perf_results_dir"/$base.subtests
 161                 echo "$1" >"$perf_results_dir"/$base.$test_count.descr
 162                 if test -z "$verbose"; then
 163                         echo -n "perf $test_count - $1:"
 164                 else
 165                         echo "perf $test_count - $1:"
 166                 fi
 167                 for i in $(test_seq 1 $GIT_PERF_REPEAT_COUNT); do
 168                         say >&3 "running: $2"
 169                         if test_run_perf_ "$2"
 170                         then
 171                                 if test -z "$verbose"; then
 172                                         echo -n " $i"
 173                                 else
 174                                         echo "* timing run $i/$GIT_PERF_REPEAT_COUNT:"
 175                                 fi
 176                         else
 177                                 test -z "$verbose" && echo
 178                                 test_failure_ "$@"
 179                                 break
 180                         fi
 181                 done
 182                 if test -z "$verbose"; then
 183                         echo " ok"
 184                 else
 185                         test_ok_ "$1"
 186                 fi
 187                 base="$perf_results_dir"/"$perf_results_prefix$(basename "$0" .sh)"."$test_count"
 188                 "$TEST_DIRECTORY"/perf/min_time.perl test_time.* >"$base".times
 189         fi
 190         echo >&3 ""
 191 }
 192
 193 # We extend test_done to print timings at the end (./run disables this
 194 # and does it after running everything)
 195 test_at_end_hook_ () {
 196         if test -z "$GIT_PERF_AGGREGATING_LATER"; then
 197                 ( cd "$TEST_DIRECTORY"/perf && ./aggregate.perl $(basename "$0") )
 198         fi
 199 }
 200
 201 test_export () {
 202         export "$@"
 203 }