Function hipExtLaunchKernel 

pub unsafe extern "C" fn hipExtLaunchKernel(
    function_address: *const c_void,
    numBlocks: dim3,
    dimBlocks: dim3,
    args: *mut *mut c_void,
    sharedMemBytes: usize,
    stream: hipStream_t,
    startEvent: hipEvent_t,
    stopEvent: hipEvent_t,
    flags: c_int,
) -> hipError_t

@brief Launches kernel from the pointer address, with arguments and shared memory on stream.

@param [in] function_address - Pointer to the Kernel to launch. @param [in] numBlocks - Number of blocks. @param [in] dimBlocks - Dimension of a block. @param [in] args - Pointer of arguments passed to the kernel. If the kernel has multiple parameters, ‘args’ should be array of pointers, each points the corresponding argument. @param [in] sharedMemBytes - Amount of dynamic shared memory to allocate for this kernel. HIP-Clang compiler provides support for extern shared declarations. @param [in] stream - Stream where the kernel should be dispatched. May be 0, in which case the default stream is used with associated synchronization rules. @param [in] startEvent - If non-null, specified event will be updated to track the start time of the kernel launch. The event must be created before calling this API. @param [in] stopEvent - If non-null, specified event will be updated to track the stop time of the kernel launch. The event must be created before calling this API. @param [in] flags - The value of hipExtAnyOrderLaunch, signifies if kernel can be launched in any order. @returns #hipSuccess, #hipErrorNotInitialized, #hipErrorInvalidValue.