Mercurial > hg
view tests/test-mq-qqueue.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 | 4f2f0f367ef6 |
children |
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$ echo "[extensions]" >> $HGRCPATH $ echo "mq=" >> $HGRCPATH $ hg init foo $ cd foo $ echo a > a $ hg ci -qAm a Default queue: $ hg qqueue patches (active) $ echo b > a $ hg qnew -fgDU somestuff Applied patches in default queue: $ hg qap somestuff Try to change patch (create succeeds, switch fails): $ hg qqueue foo --create abort: new queue created, but cannot make active as patches are applied [255] $ hg qqueue foo patches (active) Empty default queue: $ hg qpop popping somestuff patch queue now empty Switch queue: $ hg qqueue foo $ hg qqueue foo (active) patches List queues, quiet: $ hg qqueue --quiet foo patches Fail creating queue with already existing name: $ hg qqueue --create foo abort: queue "foo" already exists [255] $ hg qqueue foo (active) patches Create new queue for rename: $ hg qqueue --create bar $ hg qqueue bar (active) foo patches Rename queue, same name: $ hg qqueue --rename bar abort: can't rename "bar" to its current name [255] Rename queue to existing: $ hg qqueue --rename foo abort: queue "foo" already exists [255] Rename queue: $ hg qqueue --rename buz $ hg qqueue buz (active) foo patches Switch back to previous queue: $ hg qqueue foo $ hg qqueue --delete buz $ hg qqueue foo (active) patches Create queue for purge: $ hg qqueue --create purge-me $ hg qqueue foo patches purge-me (active) Create patch for purge: $ hg qnew patch-purge-me $ ls -1d .hg/patches-purge-me 2>/dev/null || true .hg/patches-purge-me $ hg qpop -a popping patch-purge-me patch queue now empty Purge queue: $ hg qqueue foo $ hg qqueue --purge purge-me $ hg qqueue foo (active) patches $ ls -1d .hg/patches-purge-me 2>/dev/null || true Unapplied patches: $ hg qun $ echo c > a $ hg qnew -fgDU otherstuff Fail switching back: $ hg qqueue patches abort: new queue created, but cannot make active as patches are applied [255] Fail deleting current: $ hg qqueue foo --delete abort: cannot delete currently active queue [255] Switch back and delete foo: $ hg qpop -a popping otherstuff patch queue now empty $ hg qqueue patches $ hg qqueue foo --delete $ hg qqueue patches (active) Tricky cases: $ hg qqueue store --create $ hg qnew journal $ hg qqueue patches store (active) $ hg qpop -a popping journal patch queue now empty $ hg qqueue patches $ hg qun somestuff Invalid names: $ hg qqueue test/../../bar --create abort: invalid queue name, may not contain the characters ":\/." [255] $ hg qqueue . --create abort: invalid queue name, may not contain the characters ":\/." [255] $ cd ..