update.sh: further speed up brew update.
Tweak the logic further to make the no-op case even faster. Before: ``` brew update 1.10s user 1.05s system 92% cpu 2.325 total brew update --preinstall 0.60s user 0.77s system 96% cpu 1.433 total ``` After: ``` brew update 0.60s user 0.34s system 83% cpu 1.132 total brew update --preinstall 0.29s user 0.24s system 62% cpu 0.860 total ``` These times are now fast enough to avoid any further special-casing for `--preinstall`, roll it out to users by default and not print a message unless we've actually found some updates.
This commit is contained in:
Mike McQuaid
parent
33912e218e
commit
11116c2467
@ -166,33 +166,22 @@ reset_on_interrupt() {
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exit 130
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}
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pull() {
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if [[ -n "$HOMEBREW_VERBOSE" ]]
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then
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echo "Updating $DIR..."
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fi
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# Used for testing purposes, e.g., for testing formula migration after
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# renaming it in the currently checked-out branch. To test run
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# "brew update --simulate-from-current-branch"
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simulate_from_current_branch() {
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local DIR
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local TAP_VAR
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local UPSTREAM_BRANCH
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local CURRENT_REVISION
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DIR="$1"
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cd "$DIR" || return
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TAP_VAR=$(repo_var "$DIR")
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unset STASHED
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TAP_VAR="$2"
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UPSTREAM_BRANCH="$3"
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CURRENT_REVISION="$4"
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# The upstream repository's default branch may not be master;
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# check refs/remotes/origin/HEAD to see what the default
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# origin branch name is, and use that. If not set, fall back to "master".
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INITIAL_BRANCH="$(git symbolic-ref --short HEAD 2>/dev/null)"
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UPSTREAM_BRANCH="$(upstream_branch)"
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# Used for testing purposes, e.g., for testing formula migration after
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# renaming it in the currently checked-out branch. To test run
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# "brew update --simulate-from-current-branch"
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if [[ -n "$HOMEBREW_SIMULATE_FROM_CURRENT_BRANCH" ]]
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then
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INITIAL_REVISION="$(git rev-parse -q --verify "$UPSTREAM_BRANCH")"
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CURRENT_REVISION="$(read_current_revision)"
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export HOMEBREW_UPDATE_BEFORE"$TAP_VAR"="$INITIAL_REVISION"
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export HOMEBREW_UPDATE_AFTER"$TAP_VAR"="$CURRENT_REVISION"
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if [[ "$INITIAL_REVISION" != "$CURRENT_REVISION" ]]
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@ -203,9 +192,24 @@ pull() {
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then
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odie "Your $DIR HEAD is not a descendant of $UPSTREAM_BRANCH!"
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fi
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return
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}
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merge_or_rebase() {
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if [[ -n "$HOMEBREW_VERBOSE" ]]
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then
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echo "Updating $DIR..."
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fi
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local DIR
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local TAP_VAR
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local UPSTREAM_BRANCH
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DIR="$1"
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cd "$DIR" || return
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TAP_VAR="$2"
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UPSTREAM_BRANCH="$3"
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unset STASHED
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trap reset_on_interrupt SIGINT
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if [[ -n "$(git status --untracked-files=all --porcelain 2>/dev/null)" ]]
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@ -223,6 +227,7 @@ pull() {
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STASHED="1"
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fi
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INITIAL_BRANCH="$(git symbolic-ref --short HEAD 2>/dev/null)"
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if [[ "$INITIAL_BRANCH" != "$UPSTREAM_BRANCH" && -n "$INITIAL_BRANCH" ]]
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then
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# Recreate and check out `#{upstream_branch}` if unable to fast-forward
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@ -329,11 +334,6 @@ user account:
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EOS
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fi
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if [[ -n "$HOMEBREW_UPDATE_PREINSTALL" ]]
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then
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echo "Checking for Homebrew updates..."
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fi
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if ! git --version >/dev/null 2>&1
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then
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# we cannot install brewed git if homebrew/core is unavailable.
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@ -378,20 +378,35 @@ EOS
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for DIR in "$HOMEBREW_REPOSITORY" "$HOMEBREW_LIBRARY"/Taps/*/*
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do
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[[ -d "$DIR/.git" ]] || continue
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cd "$DIR" || continue
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TAP_VAR="$(repo_var "$DIR")"
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declare PREFETCH_REVISION"$TAP_VAR"="$(read_current_revision)"
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[[ -n "$SKIP_FETCH_BREW_REPOSITORY" && "$DIR" = "$HOMEBREW_REPOSITORY" ]] && continue
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[[ -n "$SKIP_FETCH_CORE_REPOSITORY" && "$DIR" = "$HOMEBREW_LIBRARY/Taps/homebrew/homebrew-core" ]] && continue
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cd "$DIR" || continue
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# The upstream repository's default branch may not be master;
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# check refs/remotes/origin/HEAD to see what the default
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# origin branch name is, and use that. If not set, fall back to "master".
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UPSTREAM_BRANCH="$(upstream_branch)"
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declare UPSTREAM_BRANCH"$TAP_VAR"="$UPSTREAM_BRANCH"
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# the refspec ensures that the default upstream branch gets updated
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(
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if [[ -n "$HOMEBREW_UPDATE_PREINSTALL" ]]
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then
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# Skip taps checked/fetched recently
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[[ -n "$(find "$DIR/.git/FETCH_HEAD" -type f -mmin -1 2>/dev/null)" ]] && exit
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# Skip taps without formulae.
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[[ -n "$(find "$DIR/.git/FETCH_HEAD" -type f -mtime -60s 2>/dev/null)" ]] && exit
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# Skip taps without formulae (but always update Homebrew/brew and Homebrew/homebrew-core)
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if [[ "$DIR" != "$HOMEBREW_REPOSITORY" &&
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"$DIR" != "$HOMEBREW_LIBRARY/Taps/homebrew/homebrew-core" ]]
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then
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FORMULAE="$(find "$DIR" -maxdepth 1 \( -name "*.rb" -or -name Formula -or -name HomebrewFormula \) -print -quit)"
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[[ -z "$FORMULAE" ]] && exit
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fi
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fi
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UPSTREAM_REPOSITORY_URL="$(git config remote.origin.url)"
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if [[ "$UPSTREAM_REPOSITORY_URL" = "https://github.com/"* ]]
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@ -448,7 +463,27 @@ EOS
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for DIR in "$HOMEBREW_REPOSITORY" "$HOMEBREW_LIBRARY"/Taps/*/*
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do
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[[ -d "$DIR/.git" ]] || continue
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pull "$DIR"
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cd "$DIR" || continue
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TAP_VAR="$(repo_var "$DIR")"
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UPSTREAM_BRANCH_VAR="UPSTREAM_BRANCH$TAP_VAR"
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UPSTREAM_BRANCH="${!UPSTREAM_BRANCH_VAR}"
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CURRENT_REVISION="$(read_current_revision)"
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PREFETCH_REVISION_VAR="PREFETCH_REVISION$TAP_VAR"
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PREFETCH_REVISION="${!PREFETCH_REVISION_VAR}"
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if [[ -n "$HOMEBREW_SIMULATE_FROM_CURRENT_BRANCH" ]]
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then
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simulate_from_current_branch "$DIR" "$TAP_VAR" "$UPSTREAM_BRANCH" "$CURRENT_REVISION"
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elif [[ "$PREFETCH_REVISION" = "$CURRENT_REVISION" ]]
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then
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export HOMEBREW_UPDATE_BEFORE"$TAP_VAR"="$CURRENT_REVISION"
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export HOMEBREW_UPDATE_AFTER"$TAP_VAR"="$CURRENT_REVISION"
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else
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merge_or_rebase "$DIR" "$TAP_VAR" "$UPSTREAM_BRANCH"
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fi
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[[ -n "$HOMEBREW_VERBOSE" ]] && echo
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done
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