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Multi-threaded use of user mode port?

Doug_NDoug_N Member - All Emails Posts: 120

In user mode you do this to get a handle to the mini filter port:

    HANDLE hPort = NULL;
HRESULT hr = FilterConnectCommunicationPort(MY_PORT_NAME, 0, NULL, 0, NULL, &hPort);

Is it safe to use that hPort from multiple threads, i.e with calls to FilterSendMessage using the same hPort? I've been trying to find an answer to this but haven't found anything explicitly answering the question.



  • Scott_Noone_(OSR)Scott_Noone_(OSR) Administrator Posts: 3,678

    Yes, you can use the port from multiple threads.

    I can't find any supporting docs either, but the samples certainly do it (see the scanner sample)


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