rank: compute property incrementally
This replaces the naive rank computation with a more efficient incremental
method, avoiding computing the whole ancestor set when possible.
Differential Revision: https://phab.mercurial-scm.org/D12143
#require p4 execbit symlink
$ echo "[extensions]" >> $HGRCPATH
$ echo "convert = " >> $HGRCPATH
create p4 depot
$ P4ROOT=`pwd`/depot; export P4ROOT
$ P4AUDIT=$P4ROOT/audit; export P4AUDIT
$ P4JOURNAL=$P4ROOT/journal; export P4JOURNAL
$ P4LOG=$P4ROOT/log; export P4LOG
$ P4PORT=localhost:$HGPORT; export P4PORT
$ P4DEBUG=1; export P4DEBUG
$ P4CHARSET=utf8; export P4CHARSET
start the p4 server
$ [ ! -d $P4ROOT ] && mkdir $P4ROOT
$ p4d -f -J off -xi >$P4ROOT/stdout 2>$P4ROOT/stderr
$ p4d -f -J off >$P4ROOT/stdout 2>$P4ROOT/stderr &
$ echo $! >> $DAEMON_PIDS
$ trap "echo stopping the p4 server ; p4 admin stop" EXIT
wait for the server to initialize
$ while ! p4 ; do
> sleep 1
> done >/dev/null 2>/dev/null
create a client spec
$ P4CLIENT=hg-p4-import; export P4CLIENT
$ DEPOTPATH=//depot/test-mercurial-import/...
$ p4 client -o | sed '/^View:/,$ d' >p4client
$ echo View: >>p4client
$ echo " $DEPOTPATH //$P4CLIENT/..." >>p4client
$ p4 client -i <p4client
Client hg-p4-import saved.
populate the depot
$ TYPES="text binary symlink"
$ TYPES="$TYPES text+m text+w text+x text+k text+kx text+ko text+l text+C text+D text+F text+S text+S2"
$ TYPES="$TYPES binary+k binary+x binary+kx symlink+k"
$ TYPES="$TYPES ctext cxtext ktext kxtext ltext tempobj ubinary uxbinary xbinary xltext xtempobj xtext"
not testing these
$ #TYPES="$TYPES apple resource unicode utf16 uresource xunicode xutf16"
$ for T in $TYPES ; do
> T2=`echo $T | tr [:upper:] [:lower:]`
> case $T in
> apple)
> ;;
> symlink*)
> echo "this is target $T" >target_$T2
> ln -s target_$T file_$T2
> p4 add target_$T2
> p4 add -t $T file_$T2
> ;;
> binary*)
> "$PYTHON" -c "open('file_$T2', 'wb').write(b'this is $T')"
> p4 add -t $T file_$T2
> ;;
> *)
> echo "this is $T" >file_$T2
> p4 add -t $T file_$T2
> ;;
> esac
> done
//depot/test-mercurial-import/file_text#1 - opened for add
//depot/test-mercurial-import/file_binary#1 - opened for add
//depot/test-mercurial-import/target_symlink#1 - opened for add
//depot/test-mercurial-import/file_symlink#1 - opened for add
//depot/test-mercurial-import/file_text+m#1 - opened for add
//depot/test-mercurial-import/file_text+w#1 - opened for add
//depot/test-mercurial-import/file_text+x#1 - opened for add
//depot/test-mercurial-import/file_text+k#1 - opened for add
//depot/test-mercurial-import/file_text+kx#1 - opened for add
//depot/test-mercurial-import/file_text+ko#1 - opened for add
//depot/test-mercurial-import/file_text+l#1 - opened for add
//depot/test-mercurial-import/file_text+c#1 - opened for add
//depot/test-mercurial-import/file_text+d#1 - opened for add
//depot/test-mercurial-import/file_text+f#1 - opened for add
//depot/test-mercurial-import/file_text+s#1 - opened for add
//depot/test-mercurial-import/file_text+s2#1 - opened for add
//depot/test-mercurial-import/file_binary+k#1 - opened for add
//depot/test-mercurial-import/file_binary+x#1 - opened for add
//depot/test-mercurial-import/file_binary+kx#1 - opened for add
//depot/test-mercurial-import/target_symlink+k#1 - opened for add
//depot/test-mercurial-import/file_symlink+k#1 - opened for add
//depot/test-mercurial-import/file_ctext#1 - opened for add
//depot/test-mercurial-import/file_cxtext#1 - opened for add
//depot/test-mercurial-import/file_ktext#1 - opened for add
//depot/test-mercurial-import/file_kxtext#1 - opened for add
//depot/test-mercurial-import/file_ltext#1 - opened for add
//depot/test-mercurial-import/file_tempobj#1 - opened for add
//depot/test-mercurial-import/file_ubinary#1 - opened for add
//depot/test-mercurial-import/file_uxbinary#1 - opened for add
//depot/test-mercurial-import/file_xbinary#1 - opened for add
//depot/test-mercurial-import/file_xltext#1 - opened for add
//depot/test-mercurial-import/file_xtempobj#1 - opened for add
//depot/test-mercurial-import/file_xtext#1 - opened for add
$ p4 submit -d initial
Submitting change 1.
Locking 33 files ...
add //depot/test-mercurial-import/file_binary#1
add //depot/test-mercurial-import/file_binary+k#1
add //depot/test-mercurial-import/file_binary+kx#1
add //depot/test-mercurial-import/file_binary+x#1
add //depot/test-mercurial-import/file_ctext#1
add //depot/test-mercurial-import/file_cxtext#1
add //depot/test-mercurial-import/file_ktext#1
add //depot/test-mercurial-import/file_kxtext#1
add //depot/test-mercurial-import/file_ltext#1
add //depot/test-mercurial-import/file_symlink#1
add //depot/test-mercurial-import/file_symlink+k#1
add //depot/test-mercurial-import/file_tempobj#1
add //depot/test-mercurial-import/file_text#1
add //depot/test-mercurial-import/file_text+c#1
add //depot/test-mercurial-import/file_text+d#1
add //depot/test-mercurial-import/file_text+f#1
add //depot/test-mercurial-import/file_text+k#1
add //depot/test-mercurial-import/file_text+ko#1
add //depot/test-mercurial-import/file_text+kx#1
add //depot/test-mercurial-import/file_text+l#1
add //depot/test-mercurial-import/file_text+m#1
add //depot/test-mercurial-import/file_text+s#1
add //depot/test-mercurial-import/file_text+s2#1
add //depot/test-mercurial-import/file_text+w#1
add //depot/test-mercurial-import/file_text+x#1
add //depot/test-mercurial-import/file_ubinary#1
add //depot/test-mercurial-import/file_uxbinary#1
add //depot/test-mercurial-import/file_xbinary#1
add //depot/test-mercurial-import/file_xltext#1
add //depot/test-mercurial-import/file_xtempobj#1
add //depot/test-mercurial-import/file_xtext#1
add //depot/test-mercurial-import/target_symlink#1
add //depot/test-mercurial-import/target_symlink+k#1
Change 1 submitted.
//depot/test-mercurial-import/file_binary+k#1 - refreshing
//depot/test-mercurial-import/file_binary+kx#1 - refreshing
//depot/test-mercurial-import/file_ktext#1 - refreshing
//depot/test-mercurial-import/file_kxtext#1 - refreshing
//depot/test-mercurial-import/file_symlink+k#1 - refreshing
//depot/test-mercurial-import/file_text+k#1 - refreshing
//depot/test-mercurial-import/file_text+ko#1 - refreshing
//depot/test-mercurial-import/file_text+kx#1 - refreshing
test keyword expansion
$ p4 edit file_* target_*
//depot/test-mercurial-import/file_binary#1 - opened for edit
//depot/test-mercurial-import/file_binary+k#1 - opened for edit
//depot/test-mercurial-import/file_binary+kx#1 - opened for edit
//depot/test-mercurial-import/file_binary+x#1 - opened for edit
//depot/test-mercurial-import/file_ctext#1 - opened for edit
//depot/test-mercurial-import/file_cxtext#1 - opened for edit
//depot/test-mercurial-import/file_ktext#1 - opened for edit
//depot/test-mercurial-import/file_kxtext#1 - opened for edit
//depot/test-mercurial-import/file_ltext#1 - opened for edit
//depot/test-mercurial-import/file_symlink#1 - opened for edit
//depot/test-mercurial-import/file_symlink+k#1 - opened for edit
//depot/test-mercurial-import/file_tempobj#1 - opened for edit
//depot/test-mercurial-import/file_text#1 - opened for edit
//depot/test-mercurial-import/file_text+c#1 - opened for edit
//depot/test-mercurial-import/file_text+d#1 - opened for edit
//depot/test-mercurial-import/file_text+f#1 - opened for edit
//depot/test-mercurial-import/file_text+k#1 - opened for edit
//depot/test-mercurial-import/file_text+ko#1 - opened for edit
//depot/test-mercurial-import/file_text+kx#1 - opened for edit
//depot/test-mercurial-import/file_text+l#1 - opened for edit
//depot/test-mercurial-import/file_text+m#1 - opened for edit
//depot/test-mercurial-import/file_text+s#1 - opened for edit
//depot/test-mercurial-import/file_text+s2#1 - opened for edit
//depot/test-mercurial-import/file_text+w#1 - opened for edit
//depot/test-mercurial-import/file_text+x#1 - opened for edit
//depot/test-mercurial-import/file_ubinary#1 - opened for edit
//depot/test-mercurial-import/file_uxbinary#1 - opened for edit
//depot/test-mercurial-import/file_xbinary#1 - opened for edit
//depot/test-mercurial-import/file_xltext#1 - opened for edit
//depot/test-mercurial-import/file_xtempobj#1 - opened for edit
//depot/test-mercurial-import/file_xtext#1 - opened for edit
//depot/test-mercurial-import/target_symlink#1 - opened for edit
//depot/test-mercurial-import/target_symlink+k#1 - opened for edit
$ for T in $TYPES ; do
> T2=`echo $T | tr [:upper:] [:lower:]`
> echo '$Id$' >>file_$T2
> echo '$Header$' >>file_$T2
> echo '$Date$' >>file_$T2
> echo '$DateTime$' >>file_$T2
> echo '$Change$' >>file_$T2
> echo '$File$' >>file_$T2
> echo '$Revision$' >>file_$T2
> echo '$Header$$Header$Header$' >>file_$T2
> done
$ ln -s 'target_$Header$' crazy_symlink+k
$ p4 add -t symlink+k crazy_symlink+k
//depot/test-mercurial-import/crazy_symlink+k#1 - opened for add
$ p4 submit -d keywords
Submitting change 2.
Locking 34 files ...
add //depot/test-mercurial-import/crazy_symlink+k#1
edit //depot/test-mercurial-import/file_binary#2
edit //depot/test-mercurial-import/file_binary+k#2
edit //depot/test-mercurial-import/file_binary+kx#2
edit //depot/test-mercurial-import/file_binary+x#2
edit //depot/test-mercurial-import/file_ctext#2
edit //depot/test-mercurial-import/file_cxtext#2
edit //depot/test-mercurial-import/file_ktext#2
edit //depot/test-mercurial-import/file_kxtext#2
edit //depot/test-mercurial-import/file_ltext#2
edit //depot/test-mercurial-import/file_symlink#2
edit //depot/test-mercurial-import/file_symlink+k#2
edit //depot/test-mercurial-import/file_tempobj#2
edit //depot/test-mercurial-import/file_text#2
edit //depot/test-mercurial-import/file_text+c#2
edit //depot/test-mercurial-import/file_text+d#2
edit //depot/test-mercurial-import/file_text+f#2
edit //depot/test-mercurial-import/file_text+k#2
edit //depot/test-mercurial-import/file_text+ko#2
edit //depot/test-mercurial-import/file_text+kx#2
edit //depot/test-mercurial-import/file_text+l#2
edit //depot/test-mercurial-import/file_text+m#2
edit //depot/test-mercurial-import/file_text+s#2
edit //depot/test-mercurial-import/file_text+s2#2
edit //depot/test-mercurial-import/file_text+w#2
edit //depot/test-mercurial-import/file_text+x#2
edit //depot/test-mercurial-import/file_ubinary#2
edit //depot/test-mercurial-import/file_uxbinary#2
edit //depot/test-mercurial-import/file_xbinary#2
edit //depot/test-mercurial-import/file_xltext#2
edit //depot/test-mercurial-import/file_xtempobj#2
edit //depot/test-mercurial-import/file_xtext#2
edit //depot/test-mercurial-import/target_symlink#2
edit //depot/test-mercurial-import/target_symlink+k#2
Change 2 submitted.
//depot/test-mercurial-import/crazy_symlink+k#1 - refreshing
//depot/test-mercurial-import/file_binary+k#2 - refreshing
//depot/test-mercurial-import/file_binary+kx#2 - refreshing
//depot/test-mercurial-import/file_ktext#2 - refreshing
//depot/test-mercurial-import/file_kxtext#2 - refreshing
//depot/test-mercurial-import/file_symlink+k#2 - refreshing
//depot/test-mercurial-import/file_text+k#2 - refreshing
//depot/test-mercurial-import/file_text+ko#2 - refreshing
//depot/test-mercurial-import/file_text+kx#2 - refreshing
check keywords in p4
$ grep -H Header file_*
file_binary:$Header$
file_binary:$Header$$Header$Header$
file_binary+k:$Header: //depot/test-mercurial-import/file_binary+k#2 $
file_binary+k:$Header: //depot/test-mercurial-import/file_binary+k#2 $$Header: //depot/test-mercurial-import/file_binary+k#2 $Header$
file_binary+kx:$Header: //depot/test-mercurial-import/file_binary+kx#2 $
file_binary+kx:$Header: //depot/test-mercurial-import/file_binary+kx#2 $$Header: //depot/test-mercurial-import/file_binary+kx#2 $Header$
file_binary+x:$Header$
file_binary+x:$Header$$Header$Header$
file_ctext:$Header$
file_ctext:$Header$$Header$Header$
file_cxtext:$Header$
file_cxtext:$Header$$Header$Header$
file_ktext:$Header: //depot/test-mercurial-import/file_ktext#2 $
file_ktext:$Header: //depot/test-mercurial-import/file_ktext#2 $$Header: //depot/test-mercurial-import/file_ktext#2 $Header$
file_kxtext:$Header: //depot/test-mercurial-import/file_kxtext#2 $
file_kxtext:$Header: //depot/test-mercurial-import/file_kxtext#2 $$Header: //depot/test-mercurial-import/file_kxtext#2 $Header$
file_ltext:$Header$
file_ltext:$Header$$Header$Header$
file_symlink:$Header$
file_symlink:$Header$$Header$Header$
file_symlink+k:$Header$
file_symlink+k:$Header$$Header$Header$
file_tempobj:$Header$
file_tempobj:$Header$$Header$Header$
file_text:$Header$
file_text:$Header$$Header$Header$
file_text+c:$Header$
file_text+c:$Header$$Header$Header$
file_text+d:$Header$
file_text+d:$Header$$Header$Header$
file_text+f:$Header$
file_text+f:$Header$$Header$Header$
file_text+k:$Header: //depot/test-mercurial-import/file_text+k#2 $
file_text+k:$Header: //depot/test-mercurial-import/file_text+k#2 $$Header: //depot/test-mercurial-import/file_text+k#2 $Header$
file_text+ko:$Header: //depot/test-mercurial-import/file_text+ko#2 $
file_text+ko:$Header: //depot/test-mercurial-import/file_text+ko#2 $$Header: //depot/test-mercurial-import/file_text+ko#2 $Header$
file_text+kx:$Header: //depot/test-mercurial-import/file_text+kx#2 $
file_text+kx:$Header: //depot/test-mercurial-import/file_text+kx#2 $$Header: //depot/test-mercurial-import/file_text+kx#2 $Header$
file_text+l:$Header$
file_text+l:$Header$$Header$Header$
file_text+m:$Header$
file_text+m:$Header$$Header$Header$
file_text+s:$Header$
file_text+s:$Header$$Header$Header$
file_text+s2:$Header$
file_text+s2:$Header$$Header$Header$
file_text+w:$Header$
file_text+w:$Header$$Header$Header$
file_text+x:$Header$
file_text+x:$Header$$Header$Header$
file_ubinary:$Header$
file_ubinary:$Header$$Header$Header$
file_uxbinary:$Header$
file_uxbinary:$Header$$Header$Header$
file_xbinary:$Header$
file_xbinary:$Header$$Header$Header$
file_xltext:$Header$
file_xltext:$Header$$Header$Header$
file_xtempobj:$Header$
file_xtempobj:$Header$$Header$Header$
file_xtext:$Header$
file_xtext:$Header$$Header$Header$
convert
$ hg convert -s p4 $DEPOTPATH dst
initializing destination dst repository
scanning source...
reading p4 views
collecting p4 changelists
1 initial
2 keywords
sorting...
converting...
1 initial
0 keywords
$ hg -R dst log --template 'rev={rev} desc="{desc}" tags="{tags}" files="{files}"\n'
rev=1 desc="keywords" tags="tip" files="crazy_symlink+k file_binary file_binary+k file_binary+kx file_binary+x file_ctext file_cxtext file_ktext file_kxtext file_ltext file_tempobj file_text file_text+c file_text+d file_text+f file_text+k file_text+ko file_text+kx file_text+l file_text+m file_text+s file_text+s2 file_text+w file_text+x file_ubinary file_uxbinary file_xbinary file_xltext file_xtempobj file_xtext target_symlink target_symlink+k"
rev=0 desc="initial" tags="" files="file_binary file_binary+k file_binary+kx file_binary+x file_ctext file_cxtext file_ktext file_kxtext file_ltext file_symlink file_symlink+k file_text file_text+c file_text+d file_text+f file_text+k file_text+ko file_text+kx file_text+l file_text+m file_text+s2 file_text+w file_text+x file_ubinary file_uxbinary file_xbinary file_xltext file_xtext target_symlink target_symlink+k"
revision 0
$ hg -R dst update 0
30 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ head dst/file_* | cat -v
==> dst/file_binary <==
this is binary
==> dst/file_binary+k <==
this is binary+k
==> dst/file_binary+kx <==
this is binary+kx
==> dst/file_binary+x <==
this is binary+x
==> dst/file_ctext <==
this is ctext
==> dst/file_cxtext <==
this is cxtext
==> dst/file_ktext <==
this is ktext
==> dst/file_kxtext <==
this is kxtext
==> dst/file_ltext <==
this is ltext
==> dst/file_symlink <==
this is target symlink
==> dst/file_symlink+k <==
this is target symlink+k
==> dst/file_text <==
this is text
==> dst/file_text+c <==
this is text+C
==> dst/file_text+d <==
this is text+D
==> dst/file_text+f <==
this is text+F
==> dst/file_text+k <==
this is text+k
==> dst/file_text+ko <==
this is text+ko
==> dst/file_text+kx <==
this is text+kx
==> dst/file_text+l <==
this is text+l
==> dst/file_text+m <==
this is text+m
==> dst/file_text+s2 <==
this is text+S2
==> dst/file_text+w <==
this is text+w
==> dst/file_text+x <==
this is text+x
==> dst/file_ubinary <==
this is ubinary
==> dst/file_uxbinary <==
this is uxbinary
==> dst/file_xbinary <==
this is xbinary
==> dst/file_xltext <==
this is xltext
==> dst/file_xtext <==
this is xtext
revision 1
$ hg -R dst update 1
32 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ head dst/file_* | cat -v
==> dst/file_binary <==
this is binary$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_binary+k <==
this is binary+k$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_binary+kx <==
this is binary+kx$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_binary+x <==
this is binary+x$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_ctext <==
this is ctext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_cxtext <==
this is cxtext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_ktext <==
this is ktext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_kxtext <==
this is kxtext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_ltext <==
this is ltext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_symlink <==
this is target symlink
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_symlink+k <==
this is target symlink+k
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_tempobj <==
this is tempobj
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text <==
this is text
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+c <==
this is text+C
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+d <==
this is text+D
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+f <==
this is text+F
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+k <==
this is text+k
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+ko <==
this is text+ko
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+kx <==
this is text+kx
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+l <==
this is text+l
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+m <==
this is text+m
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+s <==
this is text+S
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+s2 <==
this is text+S2
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+w <==
this is text+w
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+x <==
this is text+x
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_ubinary <==
this is ubinary
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_uxbinary <==
this is uxbinary
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_xbinary <==
this is xbinary
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_xltext <==
this is xltext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_xtempobj <==
this is xtempobj
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_xtext <==
this is xtext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
crazy_symlink
$ readlink.py crazy_symlink+k
crazy_symlink+k -> target_$Header: //depot/test-mercurial-import/crazy_symlink+k#1 $
$ readlink.py dst/crazy_symlink+k
dst/crazy_symlink+k -> target_$Header$
exit trap:
stopping the p4 server