diff options
Diffstat (limited to 'src/corelib/kernel/qfunctions_winrt_p.h')
| -rw-r--r-- | src/corelib/kernel/qfunctions_winrt_p.h | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/src/corelib/kernel/qfunctions_winrt_p.h b/src/corelib/kernel/qfunctions_winrt_p.h index d98571906e..8db94c124b 100644 --- a/src/corelib/kernel/qfunctions_winrt_p.h +++ b/src/corelib/kernel/qfunctions_winrt_p.h @@ -101,8 +101,11 @@ enum AwaitStyle ProcessMainThreadEvents = 2 }; -template <typename T> -static inline HRESULT _await_impl(const Microsoft::WRL::ComPtr<T> &asyncOp, AwaitStyle awaitStyle, uint timeout) +using EarlyExitConditionFunction = std::function<bool(void)>; + +template<typename T> +static inline HRESULT _await_impl(const Microsoft::WRL::ComPtr<T> &asyncOp, AwaitStyle awaitStyle, + uint timeout, EarlyExitConditionFunction func) { Microsoft::WRL::ComPtr<ABI::Windows::Foundation::IAsyncInfo> asyncInfo; HRESULT hr = asyncOp.As(&asyncInfo); @@ -117,6 +120,8 @@ static inline HRESULT _await_impl(const Microsoft::WRL::ComPtr<T> &asyncOp, Awai case ProcessMainThreadEvents: while (SUCCEEDED(hr = asyncInfo->get_Status(&status)) && status == AsyncStatus::Started) { QCoreApplication::processEvents(); + if (func && func()) + return E_ABORT; if (timeout && t.hasExpired(timeout)) return HRESULT_FROM_WIN32(ERROR_TIMEOUT); } @@ -125,6 +130,8 @@ static inline HRESULT _await_impl(const Microsoft::WRL::ComPtr<T> &asyncOp, Awai if (QAbstractEventDispatcher *dispatcher = QThread::currentThread()->eventDispatcher()) { while (SUCCEEDED(hr = asyncInfo->get_Status(&status)) && status == AsyncStatus::Started) { dispatcher->processEvents(QEventLoop::AllEvents); + if (func && func()) + return E_ABORT; if (timeout && t.hasExpired(timeout)) return HRESULT_FROM_WIN32(ERROR_TIMEOUT); } @@ -155,20 +162,24 @@ static inline HRESULT _await_impl(const Microsoft::WRL::ComPtr<T> &asyncOp, Awai return hr; } -template <typename T> -static inline HRESULT await(const Microsoft::WRL::ComPtr<T> &asyncOp, AwaitStyle awaitStyle = YieldThread, uint timeout = 0) +template<typename T> +static inline HRESULT await(const Microsoft::WRL::ComPtr<T> &asyncOp, + AwaitStyle awaitStyle = YieldThread, uint timeout = 0, + EarlyExitConditionFunction func = nullptr) { - HRESULT hr = _await_impl(asyncOp, awaitStyle, timeout); + HRESULT hr = _await_impl(asyncOp, awaitStyle, timeout, func); if (FAILED(hr)) return hr; return asyncOp->GetResults(); } -template <typename T, typename U> -static inline HRESULT await(const Microsoft::WRL::ComPtr<T> &asyncOp, U *results, AwaitStyle awaitStyle = YieldThread, uint timeout = 0) +template<typename T, typename U> +static inline HRESULT await(const Microsoft::WRL::ComPtr<T> &asyncOp, U *results, + AwaitStyle awaitStyle = YieldThread, uint timeout = 0, + EarlyExitConditionFunction func = nullptr) { - HRESULT hr = _await_impl(asyncOp, awaitStyle, timeout); + HRESULT hr = _await_impl(asyncOp, awaitStyle, timeout, func); if (FAILED(hr)) return hr; |