How to get the name of a Win32 Thread?
Solution 1
Beginning with Windows 10, version 1607, you can now get the name of a thread using GetThreadDescription()
, assuming SetThreadDescription()
was used to set the name of the thread.
Here's an example:
HRESULT hr = GetThreadDescription(ThreadHandle, &data);
if (SUCCEEDED(hr))
{
wprintf(“%ls\m”, data);
LocalFree(data);
}
Here's the documentation:
https://msdn.microsoft.com/en-us/library/windows/desktop/mt774972(v=vs.85).aspx
Solution 2
Threads don't actually have names in Win32. The process via RaiseException
is just a "Secret Handshake" with the VS Debugger, who actually stores the TID => Name mapping. Windows itself has no notion of a thread "Name".
Solution 3
There is no such WinAPI call since there exists no such thing as thread names.
If you set a thread name then the debugger of your IDE will store it for you, which makes it easier to debug. However the name is never really attached to the thread by a windows API call.
If you run your application without a debugger then setting a thread name has no effect, therefore you can't retrieve the name.
Even if it would be accessible - I wouldn't write code that works only with a debugger attached. Better store the name for yourself together with the handle.
Michael Kelley
Updated on June 12, 2022Comments
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Michael Kelley almost 2 years
I know of the non-intuitive process to set the name of a thread under Windows (see "How to set name to a Win32 Thread?"). Is there a way to get the name of the thread? I don't see any Windows API that lets me do this (http://msdn.microsoft.com/en-us/library/windows/desktop/ms684847(v=vs.85).aspx).