diff options
| -rwxr-xr-x | git-filter-branch.sh | 23 | ||||
| -rwxr-xr-x | t/perf/p7000-filter-branch.sh | 19 |
2 files changed, 40 insertions, 2 deletions
diff --git a/git-filter-branch.sh b/git-filter-branch.sh index cefd145..98f1779 100755 --- a/git-filter-branch.sh +++ b/git-filter-branch.sh @@ -306,6 +306,15 @@ then start_timestamp=$(date '+%s') fi +if test -n "$filter_index" || + test -n "$filter_tree" || + test -n "$filter_subdir" +then + need_index=t +else + need_index= +fi + while read commit parents; do git_filter_branch__commit_count=$(($git_filter_branch__commit_count+1)) @@ -313,7 +322,10 @@ while read commit parents; do case "$filter_subdir" in "") - GIT_ALLOW_NULL_SHA1=1 git read-tree -i -m $commit + if test -n "$need_index" + then + GIT_ALLOW_NULL_SHA1=1 git read-tree -i -m $commit + fi ;; *) # The commit may not have the subdirectory at all @@ -387,8 +399,15 @@ while read commit parents; do } <../commit | eval "$filter_msg" > ../message || die "msg filter failed: $filter_msg" + + if test -n "$need_index" + then + tree=$(git write-tree) + else + tree="$commit^{tree}" + fi workdir=$workdir @SHELL_PATH@ -c "$filter_commit" "git commit-tree" \ - $(git write-tree) $parentstr < ../message > ../map/$commit || + "$tree" $parentstr < ../message > ../map/$commit || die "could not write rewritten commit" done <../revs diff --git a/t/perf/p7000-filter-branch.sh b/t/perf/p7000-filter-branch.sh new file mode 100755 index 0000000..15ee5d1 --- /dev/null +++ b/t/perf/p7000-filter-branch.sh @@ -0,0 +1,19 @@ +#!/bin/sh + +test_description='performance of filter-branch' +. ./perf-lib.sh + +test_perf_default_repo +test_checkout_worktree + +test_expect_success 'mark bases for tests' ' + git tag -f tip && + git tag -f base HEAD~100 +' + +test_perf 'noop filter' ' + git checkout --detach tip && + git filter-branch -f base..HEAD +' + +test_done |