Mercurial > hg
view tests/test-diff-color.t @ 27475:a2e2a8fa5fd1
revlog: avoid string slice when decompressing u* chunks
Revlog chunks can be stored uncompressed. If the first byte of the
raw data is \0, we store the data as is. Else we prefix it with 'u'.
Before, we performed a string slice to strip out the 'u' prefix.
With this patch, we use a buffer to avoid an extra memory copy and
associated garbage collection overhead.
I was unable to verify any performance impact of this patch. For both
mozilla-central and the hg repos, the number of manifest revisions
with 'u' prefixes is very small - under 1%. So this change likely
isn't called enough to have an impact on manifest reading. However,
the reasoning behind this change is solid, so it should be safe.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sun, 20 Dec 2015 16:00:27 -0800 |
parents | c84a07530040 |
children | 7fec37746417 |
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Setup $ cat <<EOF >> $HGRCPATH > [color] > mode = ansi > [extensions] > color = > EOF $ hg init repo $ cd repo $ cat > a <<EOF > c > c > a > a > b > a > a > c > c > EOF $ hg ci -Am adda adding a $ cat > a <<EOF > c > c > a > a > dd > a > a > c > c > EOF default context $ hg diff --nodates --color=always \x1b[0;1mdiff -r cf9f4ba66af2 a\x1b[0m (esc) \x1b[0;31;1m--- a/a\x1b[0m (esc) \x1b[0;32;1m+++ b/a\x1b[0m (esc) \x1b[0;35m@@ -2,7 +2,7 @@\x1b[0m (esc) c a a \x1b[0;31m-b\x1b[0m (esc) \x1b[0;32m+dd\x1b[0m (esc) a a c --unified=2 $ hg diff --nodates -U 2 --color=always \x1b[0;1mdiff -r cf9f4ba66af2 a\x1b[0m (esc) \x1b[0;31;1m--- a/a\x1b[0m (esc) \x1b[0;32;1m+++ b/a\x1b[0m (esc) \x1b[0;35m@@ -3,5 +3,5 @@\x1b[0m (esc) a a \x1b[0;31m-b\x1b[0m (esc) \x1b[0;32m+dd\x1b[0m (esc) a a diffstat $ hg diff --stat --color=always a | 2 \x1b[0;32m+\x1b[0m\x1b[0;31m-\x1b[0m (esc) 1 files changed, 1 insertions(+), 1 deletions(-) $ cat <<EOF >> $HGRCPATH > record = > [ui] > interactive = true > [diff] > git = True > EOF #if execbit record $ chmod +x a $ hg record --color=always -m moda a <<EOF > y > y > EOF \x1b[0;1mdiff --git a/a b/a\x1b[0m (esc) \x1b[0;36;1mold mode 100644\x1b[0m (esc) \x1b[0;36;1mnew mode 100755\x1b[0m (esc) 1 hunks, 1 lines changed \x1b[0;33mexamine changes to 'a'? [Ynesfdaq?]\x1b[0m y (esc) \x1b[0;35m@@ -2,7 +2,7 @@ c\x1b[0m (esc) c a a \x1b[0;31m-b\x1b[0m (esc) \x1b[0;32m+dd\x1b[0m (esc) a a c \x1b[0;33mrecord this change to 'a'? [Ynesfdaq?]\x1b[0m y (esc) $ echo "[extensions]" >> $HGRCPATH $ echo "mq=" >> $HGRCPATH $ hg rollback repository tip rolled back to revision 0 (undo commit) working directory now based on revision 0 qrecord $ hg qrecord --color=always -m moda patch <<EOF > y > y > EOF \x1b[0;1mdiff --git a/a b/a\x1b[0m (esc) \x1b[0;36;1mold mode 100644\x1b[0m (esc) \x1b[0;36;1mnew mode 100755\x1b[0m (esc) 1 hunks, 1 lines changed \x1b[0;33mexamine changes to 'a'? [Ynesfdaq?]\x1b[0m y (esc) \x1b[0;35m@@ -2,7 +2,7 @@ c\x1b[0m (esc) c a a \x1b[0;31m-b\x1b[0m (esc) \x1b[0;32m+dd\x1b[0m (esc) a a c \x1b[0;33mrecord this change to 'a'? [Ynesfdaq?]\x1b[0m y (esc) $ hg qpop -a popping patch patch queue now empty #endif issue3712: test colorization of subrepo diff $ hg init sub $ echo b > sub/b $ hg -R sub commit -Am 'create sub' adding b $ echo 'sub = sub' > .hgsub $ hg add .hgsub $ hg commit -m 'add subrepo sub' $ echo aa >> a $ echo bb >> sub/b $ hg diff --color=always -S \x1b[0;1mdiff --git a/a b/a\x1b[0m (esc) \x1b[0;31;1m--- a/a\x1b[0m (esc) \x1b[0;32;1m+++ b/a\x1b[0m (esc) \x1b[0;35m@@ -7,3 +7,4 @@\x1b[0m (esc) a c c \x1b[0;32m+aa\x1b[0m (esc) \x1b[0;1mdiff --git a/sub/b b/sub/b\x1b[0m (esc) \x1b[0;31;1m--- a/sub/b\x1b[0m (esc) \x1b[0;32;1m+++ b/sub/b\x1b[0m (esc) \x1b[0;35m@@ -1,1 +1,2 @@\x1b[0m (esc) b \x1b[0;32m+bb\x1b[0m (esc) test tabs $ cat >> a <<EOF > one tab > two tabs > end tab > mid tab > all tabs > EOF $ hg diff --nodates --color=always \x1b[0;1mdiff --git a/a b/a\x1b[0m (esc) \x1b[0;31;1m--- a/a\x1b[0m (esc) \x1b[0;32;1m+++ b/a\x1b[0m (esc) \x1b[0;35m@@ -7,3 +7,9 @@\x1b[0m (esc) a c c \x1b[0;32m+aa\x1b[0m (esc) \x1b[0;32m+\x1b[0m \x1b[0;32mone tab\x1b[0m (esc) \x1b[0;32m+\x1b[0m \x1b[0;32mtwo tabs\x1b[0m (esc) \x1b[0;32m+end tab\x1b[0m\x1b[0;1;41m \x1b[0m (esc) \x1b[0;32m+mid\x1b[0m \x1b[0;32mtab\x1b[0m (esc) \x1b[0;32m+\x1b[0m \x1b[0;32mall\x1b[0m \x1b[0;32mtabs\x1b[0m\x1b[0;1;41m \x1b[0m (esc) $ echo "[color]" >> $HGRCPATH $ echo "diff.tab = bold magenta" >> $HGRCPATH $ hg diff --nodates --color=always \x1b[0;1mdiff --git a/a b/a\x1b[0m (esc) \x1b[0;31;1m--- a/a\x1b[0m (esc) \x1b[0;32;1m+++ b/a\x1b[0m (esc) \x1b[0;35m@@ -7,3 +7,9 @@\x1b[0m (esc) a c c \x1b[0;32m+aa\x1b[0m (esc) \x1b[0;32m+\x1b[0m\x1b[0;1;35m \x1b[0m\x1b[0;32mone tab\x1b[0m (esc) \x1b[0;32m+\x1b[0m\x1b[0;1;35m \x1b[0m\x1b[0;32mtwo tabs\x1b[0m (esc) \x1b[0;32m+end tab\x1b[0m\x1b[0;1;41m \x1b[0m (esc) \x1b[0;32m+mid\x1b[0m\x1b[0;1;35m \x1b[0m\x1b[0;32mtab\x1b[0m (esc) \x1b[0;32m+\x1b[0m\x1b[0;1;35m \x1b[0m\x1b[0;32mall\x1b[0m\x1b[0;1;35m \x1b[0m\x1b[0;32mtabs\x1b[0m\x1b[0;1;41m \x1b[0m (esc) $ cd ..