windows – Win64异常堆栈走不显示条目

procedure DumpExceptionStack();
var
  LContext : CONTEXT;
  LUnwindHistoryTable : _UNWIND_HISTORY_TABLE;
  LRuntimeFunction : Pointer;
  LImageBase : ULONGLONG;
    HandlerData : Pointer;
    EstablisherFrame : ULONG64;
    NvContext : KNONVOLATILE_CONTEXT_POINTERS;

  LLineNumber                    : integer;
  LModuleName                    : UnicodeString;
  LPublicAddr                    : pointer;
  LPublicName                    : UnicodeString;
  LUnitName                      : UnicodeString;
begin
    //
    // First,we'll get the caller's context.
    //
  RtlCaptureContext(LContext);

    //
    // Initialize the (optional) unwind history table.
    //
  LUnwindHistoryTable := Default(_UNWIND_HISTORY_TABLE);

  // LUnwindHistoryTable.Unwind := True;

    //
    // This unwind loop intentionally skips the first call frame,as it shall
    // correspond to the call to StackTrace64,which we aren't interested in.
    //
  repeat
        //
        // Try to look up unwind metadata for the current function.
        //
        LRuntimeFunction := RtlLookupFunctionEntry(LContext.Rip,LImageBase,LUnwindHistoryTable);

    NvContext := Default(KNONVOLATILE_CONTEXT_POINTERS);

    if not Assigned(LRuntimeFunction) then
    begin
            //
            // If we don't have a RUNTIME_FUNCTION,then we've encountered
            // a leaf function.  Adjust the stack approprately.
            //

      //LContext.Rip  := (ULONG64)(*(PULONG64)Context.Rsp);
      LContext.Rip  := ULONG64(Pointer(LContext.Rsp)^);
            LContext.Rsp := LContext.Rsp + 8;
    end
    else
    begin
            //
            // Otherwise,call upon RtlVirtualUnwind to execute the unwind for
            // us.
            //
            RtlVirtualUnwind(UNW_FLAG_NHANDLER,LContext.Rip,LRuntimeFunction,LContext,HandlerData,EstablisherFrame,NvContext);
    end;

        //
        // If we reach an RIP of zero,this means that we've walked off the end
        // of the call stack and are done.
        //
    if LContext.Rip = 0 then
      Break;

        //
        // Display the context.  Note that we don't bother showing the XMM
        // context,although we have the nonvolatile portion of it.
        //
    if madMapFile.GetMapFileInfos(Pointer(LContext.Rip),LModuleName,LUnitName,LPublicName,LPublicAddr,LLineNumber) then
    begin
      Writeln(Format('%p %s.%s %d',[Pointer(LContext.Rip),LLineNumber{,LSEHType}]));
    end;
  until LContext.Rip = 0;
end;

然后我用以下内容称呼它：

procedure Main();
begin
  try
    try
      try
        try
          DumpExceptionStack();
        finally
          //
        end;
      except
        on E : Exception do
         raise
      end;
    except
      on E : Exception do
       raise
    end;
  except
    on E : Exception do
     raise
  end;
end;

当我运行应用程序(只是一个控制台应用程序)时,我只获得了Main的一个条目,但我期待有四个(三个嵌套异常,最后一个).

可能是我错误解释了,DumpExceptionStack只会在抛出异常时给出我感兴趣的结果吗？如果是这样,那么获得所有异常堆栈(如果可能)所需的更改是什么 – 即.主要有四个输出？