| # Performance testing framework. Each perf script starts much like |
| # a normal test script, except it sources this library instead of |
| # test-lib.sh. See t/perf/README for documentation. |
| # |
| # Copyright (c) 2011 Thomas Rast |
| # |
| # This program is free software: you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation, either version 2 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see http://www.gnu.org/licenses/ . |
| |
| # do the --tee work early; it otherwise confuses our careful |
| # GIT_BUILD_DIR mangling |
| case "$GIT_TEST_TEE_STARTED, $* " in |
| done,*) |
| # do not redirect again |
| ;; |
| *' --tee '*|*' --va'*) |
| mkdir -p test-results |
| BASE=test-results/$(basename "$0" .sh) |
| (GIT_TEST_TEE_STARTED=done ${SHELL-sh} "$0" "$@" 2>&1; |
| echo $? > $BASE.exit) | tee $BASE.out |
| test "$(cat $BASE.exit)" = 0 |
| exit |
| ;; |
| esac |
| |
| TEST_DIRECTORY=$(pwd)/.. |
| TEST_OUTPUT_DIRECTORY=$(pwd) |
| if test -z "$GIT_TEST_INSTALLED"; then |
| perf_results_prefix= |
| else |
| perf_results_prefix=$(printf "%s" "${GIT_TEST_INSTALLED%/bin-wrappers}" | tr -c "[a-zA-Z0-9]" "[_*]")"." |
| # make the tested dir absolute |
| GIT_TEST_INSTALLED=$(cd "$GIT_TEST_INSTALLED" && pwd) |
| fi |
| |
| TEST_NO_CREATE_REPO=t |
| TEST_NO_MALLOC_CHECK=t |
| |
| . ../test-lib.sh |
| |
| # Variables from test-lib that are normally internal to the tests; we |
| # need to export them for test_perf subshells |
| export TEST_DIRECTORY TRASH_DIRECTORY GIT_BUILD_DIR GIT_TEST_CMP |
| |
| MODERN_GIT=$GIT_BUILD_DIR/bin-wrappers/git |
| export MODERN_GIT |
| |
| perf_results_dir=$TEST_OUTPUT_DIRECTORY/test-results |
| test -n "$GIT_PERF_SUBSECTION" && perf_results_dir="$perf_results_dir/$GIT_PERF_SUBSECTION" |
| mkdir -p "$perf_results_dir" |
| rm -f "$perf_results_dir"/$(basename "$0" .sh).subtests |
| |
| die_if_build_dir_not_repo () { |
| if ! ( cd "$TEST_DIRECTORY/.." && |
| git rev-parse --build-dir >/dev/null 2>&1 ); then |
| error "No $1 defined, and your build directory is not a repo" |
| fi |
| } |
| |
| if test -z "$GIT_PERF_REPO"; then |
| die_if_build_dir_not_repo '$GIT_PERF_REPO' |
| GIT_PERF_REPO=$TEST_DIRECTORY/.. |
| fi |
| if test -z "$GIT_PERF_LARGE_REPO"; then |
| die_if_build_dir_not_repo '$GIT_PERF_LARGE_REPO' |
| GIT_PERF_LARGE_REPO=$TEST_DIRECTORY/.. |
| fi |
| |
| test_perf_do_repo_symlink_config_ () { |
| test_have_prereq SYMLINKS || git config core.symlinks false |
| } |
| |
| test_perf_create_repo_from () { |
| test "$#" = 2 || |
| error "bug in the test script: not 2 parameters to test-create-repo" |
| repo="$1" |
| source="$2" |
| source_git="$("$MODERN_GIT" -C "$source" rev-parse --git-dir)" |
| objects_dir="$("$MODERN_GIT" -C "$source" rev-parse --git-path objects)" |
| mkdir -p "$repo/.git" |
| ( |
| cd "$source" && |
| { cp -Rl "$objects_dir" "$repo/.git/" 2>/dev/null || |
| cp -R "$objects_dir" "$repo/.git/"; } && |
| for stuff in "$source_git"/*; do |
| case "$stuff" in |
| */objects|*/hooks|*/config|*/commondir) |
| ;; |
| *) |
| cp -R "$stuff" "$repo/.git/" || exit 1 |
| ;; |
| esac |
| done |
| ) && |
| ( |
| cd "$repo" && |
| "$MODERN_GIT" init -q && |
| test_perf_do_repo_symlink_config_ && |
| mv .git/hooks .git/hooks-disabled 2>/dev/null && |
| if test -f .git/index.lock |
| then |
| # We may be copying a repo that can't run "git |
| # status" due to a locked index. Since we have |
| # a copy it's fine to remove the lock. |
| rm .git/index.lock |
| fi |
| ) || error "failed to copy repository '$source' to '$repo'" |
| } |
| |
| # call at least one of these to establish an appropriately-sized repository |
| test_perf_fresh_repo () { |
| repo="${1:-$TRASH_DIRECTORY}" |
| "$MODERN_GIT" init -q "$repo" && |
| ( |
| cd "$repo" && |
| test_perf_do_repo_symlink_config_ |
| ) |
| } |
| |
| test_perf_default_repo () { |
| test_perf_create_repo_from "${1:-$TRASH_DIRECTORY}" "$GIT_PERF_REPO" |
| } |
| test_perf_large_repo () { |
| if test "$GIT_PERF_LARGE_REPO" = "$GIT_BUILD_DIR"; then |
| echo "warning: \$GIT_PERF_LARGE_REPO is \$GIT_BUILD_DIR." >&2 |
| echo "warning: This will work, but may not be a sufficiently large repo" >&2 |
| echo "warning: for representative measurements." >&2 |
| fi |
| test_perf_create_repo_from "${1:-$TRASH_DIRECTORY}" "$GIT_PERF_LARGE_REPO" |
| } |
| test_checkout_worktree () { |
| git checkout-index -u -a || |
| error "git checkout-index failed" |
| } |
| |
| # Performance tests should never fail. If they do, stop immediately |
| immediate=t |
| |
| # Perf tests require GNU time |
| case "$(uname -s)" in Darwin) GTIME="${GTIME:-gtime}";; esac |
| GTIME="${GTIME:-/usr/bin/time}" |
| |
| test_run_perf_ () { |
| test_cleanup=: |
| test_export_="test_cleanup" |
| export test_cleanup test_export_ |
| "$GTIME" -f "%E %U %S" -o test_time.$i "$SHELL" -c ' |
| . '"$TEST_DIRECTORY"/test-lib-functions.sh' |
| test_export () { |
| [ $# != 0 ] || return 0 |
| test_export_="$test_export_\\|$1" |
| shift |
| test_export "$@" |
| } |
| '"$1"' |
| ret=$? |
| set | sed -n "s'"/'/'\\\\''/g"';s/^\\($test_export_\\)/export '"'&'"'/p" >test_vars |
| exit $ret' >&3 2>&4 |
| eval_ret=$? |
| |
| if test $eval_ret = 0 || test -n "$expecting_failure" |
| then |
| test_eval_ "$test_cleanup" |
| . ./test_vars || error "failed to load updated environment" |
| fi |
| if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then |
| echo "" |
| fi |
| return "$eval_ret" |
| } |
| |
| |
| test_perf () { |
| test_start_ |
| test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq= |
| test "$#" = 2 || |
| error "bug in the test script: not 2 or 3 parameters to test-expect-success" |
| export test_prereq |
| if ! test_skip "$@" |
| then |
| base=$(basename "$0" .sh) |
| echo "$test_count" >>"$perf_results_dir"/$base.subtests |
| echo "$1" >"$perf_results_dir"/$base.$test_count.descr |
| if test -z "$verbose"; then |
| printf "%s" "perf $test_count - $1:" |
| else |
| echo "perf $test_count - $1:" |
| fi |
| for i in $(test_seq 1 $GIT_PERF_REPEAT_COUNT); do |
| say >&3 "running: $2" |
| if test_run_perf_ "$2" |
| then |
| if test -z "$verbose"; then |
| printf " %s" "$i" |
| else |
| echo "* timing run $i/$GIT_PERF_REPEAT_COUNT:" |
| fi |
| else |
| test -z "$verbose" && echo |
| test_failure_ "$@" |
| break |
| fi |
| done |
| if test -z "$verbose"; then |
| echo " ok" |
| else |
| test_ok_ "$1" |
| fi |
| base="$perf_results_dir"/"$perf_results_prefix$(basename "$0" .sh)"."$test_count" |
| "$TEST_DIRECTORY"/perf/min_time.perl test_time.* >"$base".times |
| fi |
| test_finish_ |
| } |
| |
| # We extend test_done to print timings at the end (./run disables this |
| # and does it after running everything) |
| test_at_end_hook_ () { |
| if test -z "$GIT_PERF_AGGREGATING_LATER"; then |
| ( cd "$TEST_DIRECTORY"/perf && ./aggregate.perl $(basename "$0") ) |
| fi |
| } |
| |
| test_export () { |
| export "$@" |
| } |