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Windows Driver Kit DDI reference (nf-acxcircuit-acxcircuitresumeio)

Description

The AcxCircuitResumeIo function is used to resume circuit I/O after it has been temporarily stopped.

Parameters

`Circuit`

An existing ACXCIRCUIT object. For more information about ACX objects, see Summary of ACX Objects.

Remarks

It is not recommended to use this version of the stop IO call, but rather AcxCircuitResumeIoWithTag macro as it provides additional diagnostic information by using a Tag.

Example

Example usage is shown below.

    BOOLEAN                         stoppedIo = FALSE;
    circuit = AcxPinGetCircuit(pin);

    //
    // Temporarily disable this circuit's I/Os while we are updating the
    // formats. This thread cannot be an I/O dispatched thread else we deadlock.
    //
    status = AcxCircuitStopIo(circuit, AcxStopIoNoFlags);
    if (!NT_SUCCESS(status))
    {
        HDTrace(TRACE_LEVEL_ERROR, FLAG_INFO,
                "Failed to stop I/O on circuit %p, %!STATUS!",
                circuit, status);
        ASSERT(FALSE);
        goto exit;
    }
    stoppedIo = TRUE;

   // Code to update format list not shown here

...

    if (stoppedIo)
    {
        AcxCircuitResumeIo(circuit);
        stoppedIo = FALSE;
    }

ACX requirements

Minimum ACX version: 1.0

For more information about ACX versions, see ACX version overview.

AcxCircuitResumeIo - NtDoc