OpenAsync提示 0x40080201: WinRT originate error 错误

Question

在工程从VS2012升级到VS2013之后，读取文件内容的回调函数中的OpenAsync运行之后提示：

0x764D2EEC (KernelBase.dll) (codename.exe 中)处的第一机会异常:  0x40080201: WinRT originate error (参数:  0x80004001, 0x00000006, 0x057DA7D0)。

这是什么原因引起的呢？ 附上问题代码

这个函数的作用是同步取得偏移量为offset大小为size的文件数据，然后将其拷贝到buffer中。 StorageFile指针放在clientData中。

BOOL  ReadBlock_ReLoadInFile(LPVOID clientData, void* buffer, FS_DWORD offset, FS_DWORD size,HANDLE processingHandle)
{
	if(clientData == NULL)
		return FALSE;
	FileData* pFileData = (FileData*)clientData;	
	OutputDebugString(L"OpenAsync\n");
	auto  OpenOp = pFileData->FileStream->OpenAsync(FileAccessMode::ReadWrite);    //用传递进来的StorageFile 打开文件，运行完这句代码之后，Output输出异常。
	OpenOp->Completed = ref new AsyncOperationCompletedHandler<IRandomAccessStream^>([buffer,offset,size,processingHandle](IAsyncOperation<IRandomAccessStream^>^ operation,Windows::Foundation::AsyncStatus status)
	{
		if(status == Windows::Foundation::AsyncStatus::Completed)
		{
			IRandomAccessStream^ readStream = operation->GetResults();
			readStream->Seek(offset);
			DataReader^ dataReader = ref new DataReader(readStream);
			auto LoadOp = dataReader->LoadAsync(size);
			LoadOp->Completed = ref new AsyncOperationCompletedHandler<unsigned int>([buffer,dataReader,processingHandle](IAsyncOperation<unsigned int>^ operation,Windows::Foundation::AsyncStatus status)
			{
				if(status == Windows::Foundation::AsyncStatus::Completed)
				{
						int numBytesLoaded = operation->GetResults();
						if(numBytesLoaded > 0)
						{
							Array<unsigned char,1>^ fileContent =ref new Array<unsigned char,1>(numBytesLoaded);
							dataReader->ReadBytes(fileContent);
							memcpy(buffer,fileContent->Data,numBytesLoaded);
							dataReader->DetachStream();
						}
						SetEvent(processingHandle);

				}
				else
				{
					OutputDebugString(L"LoadAsync status ERROR!!!!!\n");
					SetEvent(processingHandle);
				}
			});
		}
		else
		{
			OutputDebugString(L"status ERROR!!!!!\n");
			SetEvent(processingHandle);
		}
	}),task_continuation_context::use_arbitrary();
	WaitForSingleObjectEx(processingHandle, INFINITE, true);
	CloseHandle(processingHandle);
	return TRUE;
}

Answer 1

直接用VS2013空白模板写了一个简单demo，发现调用auto  OpenOp = FileStream->OpenAsync(FileAccessMode::ReadWrite);    的时候也会出现上述提示。 是工程设置的问题吗？

Answer 2

你好，

资源具有访问限定。 你首先需要去Package.appxmanifest 文件中设定访问权限。双击 上述文件，在Capabilities选项卡中选定你需要的资源。

希望上述方法能够帮到你。

---

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Answer 3

Package.appxmanifest 在声明项目和功能项目均设置过了，问题依旧。

Answer 4

你好，

我自己写了一段代码，在VS2012 和 VS2013 均调试通过了。以下是我的代码：

create_task(Windows::Storage::KnownFolders::DocumentsLibrary->CreateFileAsync(ref new Platform::String(L"abc.text"),Windows::Storage::CreationCollisionOption::ReplaceExisting)).then([](Windows::Storage::StorageFile^ myfile){
		auto my_file=myfile->OpenAsync(Windows::Storage::FileAccessMode::Read);
	});

如果你在Package.appxmainifest中以及 Decalarations 申请了对你特定类型文件的访问权限，

<Extension Category="windows.fileTypeAssociation">
          <FileTypeAssociation Name="text">
            <SupportedFileTypes>
              <FileType>.text</FileType>
            </SupportedFileTypes>
          </FileTypeAssociation>
        </Extension>

按理说应该不会有任何问题，如果有，你将文件访问权限限制为只读后试试。

希望上述能够帮到你！

---

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Answer 5

上述的方案还是没法解决问题，我注意到上面的代码是从Windows::Storage::KnownFolders 中去打开文件，请尝试从文件选择器中打开文件，应该就可以重现问题了。

auto openPicker = ref new FileOpenPicker();
openPicker->ViewMode = PickerViewMode::List;
openPicker->SuggestedStartLocation = PickerLocationId::DocumentsLibrary;
openPicker->FileTypeFilter->Append(".text");
task<StorageFile^> OpenFileTask(openPicker->PickSingleFileAsync());
OpenFileTask.then([this](StorageFile^ openedFile)
{
	if (openedFile != nullptr)
	{
		auto  OpenOp = openedFile->OpenAsync(Windows::Storage::FileAccessMode::ReadWrite);  //this call  0x40080201: WinRT originate error 
		OpenOp->Completed = ref new AsyncOperationCompletedHandler<IRandomAccessStream^>([this](IAsyncOperation<IRandomAccessStream^>^ operation, Windows::Foundation::AsyncStatus status)
		{
             		//do somethine
		}
	}
});

Answer 6

你好，

我复制你的代码并进行调试，结果很正常，能够读取到文件。

请用XML方式打开Package.appxmanifest 并确认你已经完成了声明。或者你可以下载一个sample, File Access Sample，调试成功后，将测试代码copy进去，然后再试一次，来排除VS本身问题。如果结果依然错误，我想，你可能需要重新安装VS2013.

希望上述能帮到你！

---

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Answer 7

非常感谢您迅速的回复，

程序的确实可以正常运行的，但是在Output窗口会输出

 0x40080201: WinRT originate error   错误

我发现我这边 windows 8.1 sample 中的“File Access”例子在运行“OpenAsync"之后也有这个现象。 我截图给你看。

Answer 8

你好，

现在VS 2013确实会有一些需要修复的地方。比如有的用户会抱怨智能感知会误报、智能感知会不进行提示等。

我这里并没有动态库异常，而且你所指出的异常我也没法跟进调试。因为这个错误来自于KernelBase.dll。

（注：还有一些其他用户也在反应该问题（英文论坛））

我将收集该信息，并向微软提交此现象，感谢你对MSDN的支持！

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