在阅读 Win64 结构化异常跟踪(来自针对 x64 异常处理支持编程,第 7 部分:将它们放在一起,或构建堆栈遍历例程)时,我转换了代码StackWalk64.cpp。
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,
                       LImageBase,
                       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), LUnitName, LPublicName, LLineNumber{, LSEHType}]));
    end;
  until LContext.Rip = 0;
end;
然后我用以下方式调用它:
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,我只得到一个条目,Main但我预计会有四个(三个嵌套异常,最后一个)。
难道是我误解了,DumpExceptionStack只会在抛出异常时给出我感兴趣的结果?如果是这样,获取所有异常堆栈(如果可能的话)所需的更改是什么 - 即。有四个输出Main?