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treeview-cache.png (39,886 bytes) |
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How often do you need to resize? I can't reproduce the bug under Linux/Gtk2. Maybe Win32 only issue. |
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Lazarus 1.7 r52861 FPC 3.0.0 i386-win32-win32/win64 I automated the resize: Counter = 165 WARNING: TResourceCacheItem.IncreaseRefCount 1000 TPenHandleCache Counter = 1665 WARNING: TResourceCacheItem.IncreaseRefCount 10000 TPenHandleCache Note: the TreevIew must have Items, otherwise this issue does not happen. |
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While redrawing, all calls to TPen.FreeReference say: FReference.Allocated=FALSE and also in all calls to TPen.ReferenceNeeded it says FReference.Allocated=FALSE So, pens are added to the cache, but never seem to get deleted from it. |
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How to fix it? I can not continue to create my project with this bug. |
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I can't reproduce the bug under Windows either. Please attach an example unit to reproduce the problem. |
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Sample project attached (tvpencache.zip). Unzip, build and run from commandline like this: C:\Users\Bart\LazarusProjecten\bugs\TreeViewPenCache>tvpencache | grep WARNING --before-context=1 Output on my system (Lazarus 1.7 r52861 FPC 3.0.0 i386-win32-win32 on Win7-64): Counter = 165 WARNING: TResourceCacheItem.IncreaseRefCount 1000 TPenHandleCache -- Counter = 1665 WARNING: TResourceCacheItem.IncreaseRefCount 10000 TPenHandleCache |
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I can confirm this issue under win32. Does not happen with qt under win32, also does not happen under linux gtk2/qt. |
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> I can not continue to create my project with this bug. I ran my sample program for > 500000 iterations. There were no errors, crashes or Windows complaining. Also heaptrace reported no memory leaks. So, whilst this is a bug, it should not prevet you from developing your program. |
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Fixed in trunk. Please test and close if OK. Btw. there was no memory leak. A new pen wasn't created, because the parameter list was wrong, so Handle 0 was given back. For this Handle 0, the reference count was increased. |
- Anonymous
