Mercurial > hg
view tests/test-mq-header-from.t @ 27430:e240e914d226 stable
revlog: seek to end of file before writing (issue4943)
Revlogs were recently refactored to open file handles in "a+" and use a
persistent file handle for reading and writing. This drastically
reduced the number of file handles being opened.
Unfortunately, it appears that some versions of Solaris lose the file
offset when performing a write after the handle has been seeked.
The simplest workaround is to seek to EOF on files opened in a+ mode
before writing to them, which is what this patch does.
Ideally, this code would exist in the vfs layer. However, this would
require creating a proxy class for file objects in order to provide a
custom implementation of write(). This would add overhead. Since
revlogs are the only files we open in a+ mode, the one-off workaround
in revlog.py should be sufficient.
This patch appears to have little to no impact on performance on my
Linux machine.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Thu, 17 Dec 2015 17:16:02 -0800 |
parents | 5ccced6eab0b |
children | 469b06b4c3ca |
line wrap: on
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$ echo "[extensions]" >> $HGRCPATH $ echo "mq=" >> $HGRCPATH $ echo "[diff]" >> $HGRCPATH $ echo "nodates=true" >> $HGRCPATH $ catlog() { > cat .hg/patches/$1.patch | sed -e "s/^diff \-r [0-9a-f]* /diff -r ... /" \ > -e "s/^\(# Parent \).*/\1/" > hg log --template "{rev}: {desc} - {author}\n" > } $ runtest() { > echo ==== init > hg init a > cd a > hg qinit > > > echo ==== qnew -U > hg qnew -U 1.patch > catlog 1 > > echo ==== qref > echo "1" >1 > hg add > hg qref > catlog 1 > > echo ==== qref -u > hg qref -u mary > catlog 1 > > echo ==== qnew > hg qnew 2.patch > echo "2" >2 > hg add > hg qref > catlog 2 > > echo ==== qref -u > hg qref -u jane > catlog 2 > > > echo ==== qnew -U -m > hg qnew -U -m "Three" 3.patch > catlog 3 > > echo ==== qref > echo "3" >3 > hg add > hg qref > catlog 3 > > echo ==== qref -m > hg qref -m "Drei" > catlog 3 > > echo ==== qref -u > hg qref -u mary > catlog 3 > > echo ==== qref -u -m > hg qref -u maria -m "Three (again)" > catlog 3 > > echo ==== qnew -m > hg qnew -m "Four" 4.patch > echo "4" >4of t > hg add > hg qref > catlog 4 > > echo ==== qref -u > hg qref -u jane > catlog 4 > > > echo ==== qnew with HG header > hg qnew --config 'mq.plain=true' 5.patch > hg qpop > echo "# HG changeset patch" >>.hg/patches/5.patch > echo "# User johndoe" >>.hg/patches/5.patch > hg qpush 2>&1 | grep 'now at' > catlog 5 > > echo ==== hg qref > echo "5" >5 > hg add > hg qref > catlog 5 > > echo ==== hg qref -U > hg qref -U > catlog 5 > > echo ==== hg qref -u > hg qref -u johndeere > catlog 5 > > > echo ==== qnew with plain header > hg qnew --config 'mq.plain=true' -U 6.patch > hg qpop > hg qpush 2>&1 | grep 'now at' > catlog 6 > > echo ==== hg qref > echo "6" >6 > hg add > hg qref > catlog 6 > > echo ==== hg qref -U > hg qref -U > catlog 6 > > echo ==== hg qref -u > hg qref -u johndeere > catlog 6 > > > echo ==== "qpop -a / qpush -a" > hg qpop -a > hg qpush -a > hg log --template "{rev}: {desc} - {author}\n" > } ======= plain headers $ echo "[mq]" >> $HGRCPATH $ echo "plain=true" >> $HGRCPATH $ mkdir sandbox $ (cd sandbox ; runtest) ==== init ==== qnew -U From: test 0: [mq]: 1.patch - test ==== qref adding 1 From: test diff -r ... 1 --- /dev/null +++ b/1 @@ -0,0 +1,1 @@ +1 0: [mq]: 1.patch - test ==== qref -u From: mary diff -r ... 1 --- /dev/null +++ b/1 @@ -0,0 +1,1 @@ +1 0: [mq]: 1.patch - mary ==== qnew adding 2 diff -r ... 2 --- /dev/null +++ b/2 @@ -0,0 +1,1 @@ +2 1: [mq]: 2.patch - test 0: [mq]: 1.patch - mary ==== qref -u From: jane diff -r ... 2 --- /dev/null +++ b/2 @@ -0,0 +1,1 @@ +2 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qnew -U -m From: test Three 2: Three - test 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref adding 3 From: test Three diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 2: Three - test 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref -m From: test Drei diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 2: Drei - test 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref -u From: mary Drei diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 2: Drei - mary 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref -u -m From: maria Three (again) diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qnew -m adding 4of Four diff -r ... 4of --- /dev/null +++ b/4of @@ -0,0 +1,1 @@ +4 t 3: Four - test 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref -u From: jane Four diff -r ... 4of --- /dev/null +++ b/4of @@ -0,0 +1,1 @@ +4 t 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qnew with HG header popping 5.patch now at: 4.patch now at: 5.patch # HG changeset patch # User johndoe 4: imported patch 5.patch - johndoe 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref adding 5 # HG changeset patch # User johndoe # Parent diff -r ... 5 --- /dev/null +++ b/5 @@ -0,0 +1,1 @@ +5 4: [mq]: 5.patch - johndoe 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref -U # HG changeset patch # User test # Parent diff -r ... 5 --- /dev/null +++ b/5 @@ -0,0 +1,1 @@ +5 4: [mq]: 5.patch - test 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref -u # HG changeset patch # User johndeere # Parent diff -r ... 5 --- /dev/null +++ b/5 @@ -0,0 +1,1 @@ +5 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qnew with plain header popping 6.patch now at: 5.patch now at: 6.patch From: test 5: imported patch 6.patch - test 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref adding 6 From: test diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 5: [mq]: 6.patch - test 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref -U From: test diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 5: [mq]: 6.patch - test 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref -u From: johndeere diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 5: [mq]: 6.patch - johndeere 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qpop -a / qpush -a popping 6.patch popping 5.patch popping 4.patch popping 3.patch popping 2.patch popping 1.patch patch queue now empty applying 1.patch applying 2.patch applying 3.patch applying 4.patch applying 5.patch applying 6.patch now at: 6.patch 5: imported patch 6.patch - johndeere 4: imported patch 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: imported patch 2.patch - jane 0: imported patch 1.patch - mary $ rm -r sandbox ======= hg headers $ echo "plain=false" >> $HGRCPATH $ mkdir sandbox $ (cd sandbox ; runtest) ==== init ==== qnew -U # HG changeset patch # User test # Parent 0: [mq]: 1.patch - test ==== qref adding 1 # HG changeset patch # User test # Parent diff -r ... 1 --- /dev/null +++ b/1 @@ -0,0 +1,1 @@ +1 0: [mq]: 1.patch - test ==== qref -u # HG changeset patch # User mary # Parent diff -r ... 1 --- /dev/null +++ b/1 @@ -0,0 +1,1 @@ +1 0: [mq]: 1.patch - mary ==== qnew adding 2 # HG changeset patch # Parent diff -r ... 2 --- /dev/null +++ b/2 @@ -0,0 +1,1 @@ +2 1: [mq]: 2.patch - test 0: [mq]: 1.patch - mary ==== qref -u # HG changeset patch # User jane # Parent diff -r ... 2 --- /dev/null +++ b/2 @@ -0,0 +1,1 @@ +2 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qnew -U -m # HG changeset patch # User test # Parent Three 2: Three - test 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref adding 3 # HG changeset patch # User test # Parent Three diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 2: Three - test 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref -m # HG changeset patch # User test # Parent Drei diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 2: Drei - test 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref -u # HG changeset patch # User mary # Parent Drei diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 2: Drei - mary 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref -u -m # HG changeset patch # User maria # Parent Three (again) diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qnew -m adding 4of # HG changeset patch # Parent Four diff -r ... 4of --- /dev/null +++ b/4of @@ -0,0 +1,1 @@ +4 t 3: Four - test 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref -u # HG changeset patch # User jane # Parent Four diff -r ... 4of --- /dev/null +++ b/4of @@ -0,0 +1,1 @@ +4 t 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qnew with HG header popping 5.patch now at: 4.patch now at: 5.patch # HG changeset patch # User johndoe 4: imported patch 5.patch - johndoe 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref adding 5 # HG changeset patch # User johndoe # Parent diff -r ... 5 --- /dev/null +++ b/5 @@ -0,0 +1,1 @@ +5 4: [mq]: 5.patch - johndoe 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref -U # HG changeset patch # User test # Parent diff -r ... 5 --- /dev/null +++ b/5 @@ -0,0 +1,1 @@ +5 4: [mq]: 5.patch - test 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref -u # HG changeset patch # User johndeere # Parent diff -r ... 5 --- /dev/null +++ b/5 @@ -0,0 +1,1 @@ +5 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qnew with plain header popping 6.patch now at: 5.patch now at: 6.patch From: test 5: imported patch 6.patch - test 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref adding 6 From: test diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 5: [mq]: 6.patch - test 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref -U From: test diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 5: [mq]: 6.patch - test 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref -u From: johndeere diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 5: [mq]: 6.patch - johndeere 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qpop -a / qpush -a popping 6.patch popping 5.patch popping 4.patch popping 3.patch popping 2.patch popping 1.patch patch queue now empty applying 1.patch applying 2.patch applying 3.patch applying 4.patch applying 5.patch applying 6.patch now at: 6.patch 5: imported patch 6.patch - johndeere 4: imported patch 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: imported patch 2.patch - jane 0: imported patch 1.patch - mary $ rm -r sandbox $ runtest ==== init ==== qnew -U # HG changeset patch # User test # Parent 0: [mq]: 1.patch - test ==== qref adding 1 # HG changeset patch # User test # Parent diff -r ... 1 --- /dev/null +++ b/1 @@ -0,0 +1,1 @@ +1 0: [mq]: 1.patch - test ==== qref -u # HG changeset patch # User mary # Parent diff -r ... 1 --- /dev/null +++ b/1 @@ -0,0 +1,1 @@ +1 0: [mq]: 1.patch - mary ==== qnew adding 2 # HG changeset patch # Parent diff -r ... 2 --- /dev/null +++ b/2 @@ -0,0 +1,1 @@ +2 1: [mq]: 2.patch - test 0: [mq]: 1.patch - mary ==== qref -u # HG changeset patch # User jane # Parent diff -r ... 2 --- /dev/null +++ b/2 @@ -0,0 +1,1 @@ +2 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qnew -U -m # HG changeset patch # User test # Parent Three 2: Three - test 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref adding 3 # HG changeset patch # User test # Parent Three diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 2: Three - test 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref -m # HG changeset patch # User test # Parent Drei diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 2: Drei - test 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref -u # HG changeset patch # User mary # Parent Drei diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 2: Drei - mary 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref -u -m # HG changeset patch # User maria # Parent Three (again) diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qnew -m adding 4of # HG changeset patch # Parent Four diff -r ... 4of --- /dev/null +++ b/4of @@ -0,0 +1,1 @@ +4 t 3: Four - test 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qref -u # HG changeset patch # User jane # Parent Four diff -r ... 4of --- /dev/null +++ b/4of @@ -0,0 +1,1 @@ +4 t 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qnew with HG header popping 5.patch now at: 4.patch now at: 5.patch # HG changeset patch # User johndoe 4: imported patch 5.patch - johndoe 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref adding 5 # HG changeset patch # User johndoe # Parent diff -r ... 5 --- /dev/null +++ b/5 @@ -0,0 +1,1 @@ +5 4: [mq]: 5.patch - johndoe 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref -U # HG changeset patch # User test # Parent diff -r ... 5 --- /dev/null +++ b/5 @@ -0,0 +1,1 @@ +5 4: [mq]: 5.patch - test 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref -u # HG changeset patch # User johndeere # Parent diff -r ... 5 --- /dev/null +++ b/5 @@ -0,0 +1,1 @@ +5 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qnew with plain header popping 6.patch now at: 5.patch now at: 6.patch From: test 5: imported patch 6.patch - test 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref adding 6 From: test diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 5: [mq]: 6.patch - test 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref -U From: test diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 5: [mq]: 6.patch - test 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== hg qref -u From: johndeere diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 5: [mq]: 6.patch - johndeere 4: [mq]: 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: [mq]: 2.patch - jane 0: [mq]: 1.patch - mary ==== qpop -a / qpush -a popping 6.patch popping 5.patch popping 4.patch popping 3.patch popping 2.patch popping 1.patch patch queue now empty applying 1.patch applying 2.patch applying 3.patch applying 4.patch applying 5.patch applying 6.patch now at: 6.patch 5: imported patch 6.patch - johndeere 4: imported patch 5.patch - johndeere 3: Four - jane 2: Three (again) - maria 1: imported patch 2.patch - jane 0: imported patch 1.patch - mary $ cd ..