StartThreadpoolIo function (threadpoolapiset.h)
Notifies the thread pool that I/O operations may possibly begin for the specified I/O completion object. A worker thread calls the I/O completion object's callback function after the operation completes on the file handle bound to this object.
Syntax
void StartThreadpoolIo(
[in, out] PTP_IO pio
);
Parameters
[in, out] pio
A pointer to a TP_IO structure that defines the I/O completion object. The CreateThreadpoolIo function returns this pointer.
Return value
None
Remarks
You must call this function before initiating each asynchronous I/O operation on the file handle bound to the I/O completion object. Failure to do so will cause the thread pool to ignore an I/O operation when it completes and will cause memory corruption.
If the I/O operation fails, call the CancelThreadpoolIo function to cancel this notification.
If the file handle bound to the I/O completion object has the notification mode FILE_SKIP_COMPLETION_PORT_ON_SUCCESS and an asynchronous I/O operation returns immediately with success, the object's I/O completion callback function is not called and threadpool I/O notifications must be canceled. For more information, see CancelThreadpoolIo.
To compile an application that uses this function, define _WIN32_WINNT as 0x0600 or higher.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2008 [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | threadpoolapiset.h (include Windows.h on Windows 7, Windows Server 2008 Windows Server 2008 R2) |
| Library | Kernel32.lib |
| DLL | Kernel32.dll |