git-commit-vandalism/t/perf/run
Ævar Arnfjörð Bjarmason 88b6197d0b perf: add a GIT_PERF_MAKE_COMMAND for when *_MAKE_OPTS won't do
Add a git GIT_PERF_MAKE_COMMAND variable to compliment the existing
GIT_PERF_MAKE_OPTS facility. This allows specifying an arbitrary shell
command to execute instead of 'make'.

This is useful e.g. in cases where the name, semantics or defaults of
a Makefile flag have changed over time. It can even be used to change
the contents of the tree, useful for monkeypatching ancient versions
of git to get them to build.

This opens Pandora's box in some ways, it's now possible to
"jailbreak" the perf environment and e.g. modify the source tree via
this arbitrary instead of just issuing a custom "make" command, such a
command has to be re-entrant in the sense that subsequent perf runs
will re-use the possibly modified tree.

It would be pointless to try to mitigate or work around that caveat in
a tool purely aimed at Git developers, so this change makes no attempt
to do so.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-21 08:25:38 +09:00

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#!/bin/sh
case "$1" in
--help)
echo "usage: $0 [other_git_tree...] [--] [test_scripts]"
exit 0
;;
esac
die () {
echo >&2 "error: $*"
exit 1
}
run_one_dir () {
if test $# -eq 0; then
set -- p????-*.sh
fi
echo "=== Running $# tests in ${GIT_TEST_INSTALLED:-this tree} ==="
for t in "$@"; do
./$t $GIT_TEST_OPTS
done
}
unpack_git_rev () {
rev=$1
mkdir -p build/$rev
(cd "$(git rev-parse --show-cdup)" && git archive --format=tar $rev) |
(cd build/$rev && tar x)
}
build_git_rev () {
rev=$1
for config in config.mak config.mak.autogen config.status
do
if test -e "../../$config"
then
cp "../../$config" "build/$rev/"
fi
done
(
cd build/$rev &&
if test -n "$GIT_PERF_MAKE_COMMAND"
then
sh -c "$GIT_PERF_MAKE_COMMAND"
else
make $GIT_PERF_MAKE_OPTS
fi
) || die "failed to build revision '$mydir'"
}
run_dirs_helper () {
mydir=${1%/}
shift
while test $# -gt 0 -a "$1" != -- -a ! -f "$1"; do
shift
done
if test $# -gt 0 -a "$1" = --; then
shift
fi
if [ ! -d "$mydir" ]; then
rev=$(git rev-parse --verify "$mydir" 2>/dev/null) ||
die "'$mydir' is neither a directory nor a valid revision"
if [ ! -d build/$rev ]; then
unpack_git_rev $rev
fi
build_git_rev $rev
mydir=build/$rev
fi
if test "$mydir" = .; then
unset GIT_TEST_INSTALLED
else
GIT_TEST_INSTALLED="$mydir/bin-wrappers"
# Older versions of git lacked bin-wrappers; fallback to the
# files in the root.
test -d "$GIT_TEST_INSTALLED" || GIT_TEST_INSTALLED=$mydir
export GIT_TEST_INSTALLED
fi
run_one_dir "$@"
}
run_dirs () {
while test $# -gt 0 -a "$1" != -- -a ! -f "$1"; do
run_dirs_helper "$@"
shift
done
}
GIT_PERF_AGGREGATING_LATER=t
export GIT_PERF_AGGREGATING_LATER
cd "$(dirname $0)"
. ../../GIT-BUILD-OPTIONS
if test $# = 0 -o "$1" = -- -o -f "$1"; then
set -- . "$@"
fi
run_dirs "$@"
./aggregate.perl "$@"