Delphi 2009:如何防止网络应用泄漏关键部分？

Question

作为Vista认证的一部分,Microsoft希望确保应用程序退出而不保留锁定(关键部分):

测试案例31.使用指定的AppVerifier检查确认应用程序不会进入调试器(请求:3.2)

事实证明,使用Delphi 2009构建的网络应用程序确实会进入调试器,它会显示无用的消息,如下所示:

(1214.1f10): Break instruction exception - code 80000003 (first chance)
eax=00000001 ebx=07b64ff8 ecx=a6450000 edx=0007e578 esi=0017f7e0 edi=80000003
eip=77280004 esp=0017f780 ebp=0017f7ac iopl=0         nv up ei pl zr na pe nc
cs=0023  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00000246
*** ERROR: Symbol file could not be found.  Defaulted to export symbols for C:\Windows\SysWOW64\ntdll.dll - 
ntdll!DbgBreakPoint:
77280004 cc              int     3

多次点击Go按钮后,您会遇到实际错误:

=======================================
VERIFIER STOP 00000212: pid 0x18A4: Freeing virtual memory containing an active critical section. 

    076CC5DC : Critical section address.
    01D0191C : Critical section initialization stack trace.
    075D0000 : Memory block address.
    00140000 : Memory block size.


=======================================
This verifier stop is continuable.
After debugging it use `go' to continue.

=======================================

鉴于我的代码没有泄漏TCriticalSection,我如何阻止Delphi这样做.

Answer 1

Indy10在退出时故意泄漏关键部分.

IdStack.pas:

finalization
  // Dont Free. If shutdown is from another Init section, it can cause GPF when stack
  // tries to access it. App will kill it off anyways, so just let it leak
  {$IFDEF IDFREEONFINAL}
  FreeAndNil(GStackCriticalSection);
  {$ENDIF}

IdThread.pas:

finalization
  // This call hangs if not all threads have been properly destroyed.
  // But without this, bad threads can often have worse results. Catch 22.
//  TIdThread.WaitAllThreadsTerminated;

  {$IFDEF IDFREEONFINAL}
  //only enable this if you know your code exits thread-clean
  FreeAndNil(GThreadCount);
  {$ENDIF}

1. 这两个文件从%delphi_home%\source\Indy\Indy10\System和%delphi_home%\source\Indy\Indy10\Core到您的项目,或将它们包括在搜索路径.
2. 重建IDFREEONFINAL或删除IFDEF指令.