AQTime 8.10 in RAD studio now give Access violation

Question

Attempting to profile an application written in Delphi XE3 now gives an access violation with any profiler when loading a form that contains VirtualStringTree 5.2.2.

Has anyone found a solution to this?

Neville

her123 · Answer

There seems to be two cases:If the RootNodeCount = 1 then an AV occurs.When VirtualStringTree.Clear() is called and AV occurs.

her123 · Answer

I have narrowed it down to the EndUpdate()

her123 · Answer

TBaseVirtualTree.PackArray() where it executes assembler on Win32 is the problemasm&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PUSH&nbsp;&nbsp;&nbsp; EBX&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PUSH&nbsp;&nbsp;&nbsp; EDI&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PUSH&nbsp;&nbsp;&nbsp; ESI&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MOV&nbsp;&nbsp;&nbsp;&nbsp; ESI, EDX&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MOV&nbsp;&nbsp;&nbsp;&nbsp; EDX, -1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; JCXZ&nbsp;&nbsp;&nbsp; @@Finish&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // Empty list?&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; INC&nbsp;&nbsp;&nbsp;&nbsp; EDX&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // init remaining entries counter&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MOV&nbsp;&nbsp;&nbsp;&nbsp; EDI, ESI&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // source and destination point to the list memory&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MOV&nbsp;&nbsp;&nbsp;&nbsp; EBX, 1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // use a register instead of immediate operant to check against@@PreScan:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; TEST&nbsp;&nbsp;&nbsp; [ESI], EBX&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // do the fastest scan possible to find the first entry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // which must be removed&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; JNZ&nbsp;&nbsp;&nbsp;&nbsp; @@DoMainLoop&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; INC&nbsp;&nbsp;&nbsp;&nbsp; EDX&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ADD&nbsp;&nbsp;&nbsp;&nbsp; ESI, 4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DEC&nbsp;&nbsp;&nbsp;&nbsp; ECX&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; JNZ&nbsp;&nbsp;&nbsp;&nbsp; @@PreScan&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; JMP&nbsp;&nbsp;&nbsp;&nbsp; @@Finish@@DoMainLoop:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MOV&nbsp;&nbsp;&nbsp;&nbsp; EDI, ESI@@MainLoop:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; TEST&nbsp;&nbsp;&nbsp; [ESI], EBX&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // odd entry?&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; JNE&nbsp;&nbsp;&nbsp;&nbsp; @@Skip&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // yes, so skip this one&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MOVSD&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // else move the entry to new location&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; INC&nbsp;&nbsp;&nbsp;&nbsp; EDX&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // count the moved entries&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DEC&nbsp;&nbsp;&nbsp;&nbsp; ECX&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; JNZ&nbsp;&nbsp;&nbsp;&nbsp; @@MainLoop&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // do it until all entries are processed&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; JMP&nbsp;&nbsp;&nbsp;&nbsp; @@Finish@@Skip:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ADD&nbsp;&nbsp;&nbsp;&nbsp; ESI, 4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // point to the next entry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DEC&nbsp;&nbsp;&nbsp;&nbsp; ECX&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; JNZ&nbsp;&nbsp;&nbsp;&nbsp; @@MainLoop&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // do it until all entries are processed@@Finish:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MOV&nbsp;&nbsp;&nbsp;&nbsp; EAX, EDX&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // prepare return value&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; POP&nbsp;&nbsp;&nbsp;&nbsp; ESI&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; POP&nbsp;&nbsp;&nbsp;&nbsp; EDI&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; POP&nbsp;&nbsp;&nbsp;&nbsp; EBXend;AQTime has problems with this.The solution is to modify the conditional define and use the Pascal code that would normally be used for the 64bit build.

eric_zurcher · Answer

A bit more testing shows that the problem seems to be the result of using the JCXZ instruction. If the VirtualTree code is changed from

JCXZ @@Finish

to the equivalent:

CMP CX, 0

JZ @@Finish

then AQTime can execute it. Why should this be so?

alexkaras · Answer

Hi&nbsp;Neville and Eric,While Support monitors this and other forums on the site, I think that it may speed things up if you submit a ticket via http://support.smartbear.com/message/?prod=AQtime&nbsp;referencing this thread...

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AQTime 8.10 in RAD studio now give Access violation

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