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gitk: Fix bug causing nearby tags/heads to sometimes not be displayed

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When we compute descendent heads and descendent/ancestor tags, we
cache the results.  We need to be careful to invalidate the cache
when we add stuff to the graph.  Also make sure that when we cache
descendent heads for a node we only cache the heads that are actually
descendents of that node.

Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Paul Mackerras 2007-06-18 22:39:21 +10:00
parent a2c22362cc
commit f3326b66bf
1 changed files with 11 additions and 3 deletions
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14
gitk
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@ -5950,7 +5950,7 @@ proc regetallcommits {} {
# coming from descendents, and "outgoing" means going towards ancestors.
proc getallclines {fd} {
global allids allparents allchildren idtags nextarc nbmp
global allids allparents allchildren idtags idheads nextarc nbmp
global arcnos arcids arctags arcout arcend arcstart archeads growing
global seeds allcommits
@ -6023,6 +6023,12 @@ proc getallclines {fd} {
}
set arcout($id) $ao
}
if {$nid > 0} {
global cached_dheads cached_dtags cached_atags
catch {unset cached_dheads}
catch {unset cached_dtags}
catch {unset cached_atags}
}
if {![eof $fd]} {
return [expr {$nid >= 1000? 2: 1}]
}
@ -6674,7 +6680,7 @@ proc descheads {id} {
if {![info exists allparents($id)]} {
return {}
}
set ret {}
set aret {}
if {[llength $arcnos($id)] == 1 && [llength $allparents($id)] == 1} {
# part-way along an arc; check it first
set a [lindex $arcnos($id) 0]
@ -6684,7 +6690,7 @@ proc descheads {id} {
foreach t $archeads($a) {
set j [lsearch -exact $arcids($a) $t]
if {$j > $i} break
lappend $ret $t
lappend aret $t
}
}
set id $arcstart($a)
@ -6692,6 +6698,7 @@ proc descheads {id} {
set origid $id
set todo [list $id]
set seen($id) 1
set ret {}
for {set i 0} {$i < [llength $todo]} {incr i} {
set id [lindex $todo $i]
if {[info exists cached_dheads($id)]} {
@ -6714,6 +6721,7 @@ proc descheads {id} {
}
set ret [lsort -unique $ret]
set cached_dheads($origid) $ret
return [concat $ret $aret]
}
proc addedtag {id} {