Method Context

include/CL/opencl.hpp:3105–3134

! \brief Constructs a context including a list of specified devices. * * Wraps clCreateContext(). */

     *  Wraps clCreateContext().
     */
    Context(
        const vector<Device>& devices,
        const cl_context_properties* properties = nullptr,
        void (CL_CALLBACK * notifyFptr)(
            const char *,
            const void *,
            size_type,
            void *) = nullptr,
        void* data = nullptr,
        cl_int* err = nullptr)
    {
        cl_int error;

        size_type numDevices = devices.size();
        vector<cl_device_id> deviceIDs(numDevices);

        for( size_type deviceIndex = 0; deviceIndex < numDevices; ++deviceIndex ) {
            deviceIDs[deviceIndex] = (devices[deviceIndex])();
        }

        object_ = ::clCreateContext(
            properties, (cl_uint) numDevices,
            deviceIDs.data(),
            notifyFptr, data, &error);

        detail::errHandler(error, __CREATE_CONTEXT_ERR);
        if (err != nullptr) {
            *err = error;
        }
    }

    /*! \brief Constructs a context including a specific device.
     *