async_promise.hpp
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// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html.
#ifndef OPENCV_CORE_ASYNC_PROMISE_HPP
#define OPENCV_CORE_ASYNC_PROMISE_HPP
#include "../async.hpp"
#include "exception_ptr.hpp"
namespace cv {
/** @addtogroup core_async
@{
*/
/** @brief Provides result of asynchronous operations
*/
class CV_EXPORTS AsyncPromise
{
public:
~AsyncPromise() CV_NOEXCEPT;
AsyncPromise() CV_NOEXCEPT;
explicit AsyncPromise(const AsyncPromise& o) CV_NOEXCEPT;
AsyncPromise& operator=(const AsyncPromise& o) CV_NOEXCEPT;
void release() CV_NOEXCEPT;
/** Returns associated AsyncArray
@note Can be called once
*/
AsyncArray getArrayResult();
/** Stores asynchronous result.
@param[in] value result
*/
void setValue(InputArray value);
// TODO "move" setters
#if CV__EXCEPTION_PTR
/** Stores exception.
@param[in] exception exception to be raised in AsyncArray
*/
void setException(std::exception_ptr exception);
#endif
/** Stores exception.
@param[in] exception exception to be raised in AsyncArray
*/
void setException(const cv::Exception& exception);
#ifdef CV_CXX11
explicit AsyncPromise(AsyncPromise&& o) { p = o.p; o.p = NULL; }
AsyncPromise& operator=(AsyncPromise&& o) CV_NOEXCEPT { std::swap(p, o.p); return *this; }
#endif
// PImpl
typedef struct AsyncArray::Impl Impl; friend struct AsyncArray::Impl;
inline void* _getImpl() const CV_NOEXCEPT { return p; }
protected:
Impl* p;
};
//! @}
} // namespace
#endif // OPENCV_CORE_ASYNC_PROMISE_HPP