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wasapi: replaced InterlockedCompareExchange with InterlockedOr and added clarifying comment why Interlocked API is used

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dmitrykos 2016-08-26 22:31:45 +03:00
commit 319b19203a
1 changed files with 2 additions and 1 deletions
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3
src/hostapi/wasapi/pa_win_wasapi.c
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@ -1367,7 +1367,8 @@ static HRESULT ActivateAudioInterface_WINRT(const PaWasapiDeviceInfo *deviceInfo
IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
// Wait in busy loop for async operation to complete
while (SUCCEEDED(hr) && !InterlockedCompareExchange(&handlerImpl->done, FALSE, FALSE))
// Use Interlocked API here to ensure that ->done variable is read every time through the loop
while (SUCCEEDED(hr) && !InterlockedOr(&handlerImpl->done, 0))
{
Sleep(1);
}