Hi,
I'm presuming the problem with your result is that the "<span..." String
is in the times map, and not in the store map (you weren't clear on the
exact problem).
I took a look at the code, here's my thoughts on why this occurs. If
you start by putting something in the cache with key "foo", an entry is
created in the times map, say: fromList [(0, "foo")]. If you then get
the item from the cache, you add another item to the times map, giving
you: fromList [(0, "foo"), (1, "foo")]. Another get operation, and
you'll have fromList [(0, "foo"), (1, "foo"), (2, "foo")]. If you now
call free on the cache, it finds the value associated with the minimum
key: "foo". But it only deletes the minimum key in the times map,
leaving: fromList [(1, "foo"), (2, "foo")]. Thus you can have entries
in the times map without them being in the store. put would clear them
out (perhaps this was the self-correction you saw), but get adds one
each item, and free only clears one. So you either need to fix get, or
free.
Does that help, or was your question something else entirely? :-)
BTW, IntMap.fromList . filter (f . snd) . IntMap.toList is more
concisely (and efficiently) written as: IntMap.filter f
Thanks,
Neil.
Jeff Heard wrote:
The code that causes it is here:
http://hpaste.org/fastcgi/hpaste.fcgi/view?id=5731#a5731
This is the strangest thing. Occasionally, using nothing but gets and
puts and frees on a non-full Cache will result in this:
Cache {
store = fromList
[("(\"icons/addBookmark.png\",False)",TextureObject {textureID = 4})
,("(\"icons/addCircle.png\",False)",TextureObject {textureID = 1})
,("(\"icons/addContent.png\",False)",TextureObject {textureID = 2})
,("(\"icons/addElsewhereLink.png\",False)",TextureObject
{textureID = 3})]
, times = fromList
[(61314,"(\"<span font_desc='sans
8'>294.0</span>\",AlignLeft,Nothing,WrapWholeWords,False,0.0,0.0)")
,(61316,"(\"icons/addBookmark.png\",False)"),(61318,"(\"icons/addCircle.png\",False)")
,(61320,"(\"icons/addContent.png\",False)"),(61322,"(\"icons/addElsewhereLink.png\",False)")]
, now = 61323
, maxsize = 1024768000
, size = 4
, decimation = 0
}
Sometimes the problem is self-correcting. Sometimes it is most
certainly not. But I don't understand how my code can possibly allow
for this.
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