Function cuGraphAddEmptyNode

pub unsafe extern "C" fn cuGraphAddEmptyNode(
    phGraphNode: *mut CUgraphNode,
    hGraph: CUgraph,
    dependencies: *const CUgraphNode,
    numDependencies: usize,
) -> CUresult

\brief Creates an empty node and adds it to a graph

Creates a new node which performs no operation, and adds it to \p hGraph with \p numDependencies dependencies specified via \p dependencies. It is possible for \p numDependencies to be 0, in which case the node will be placed at the root of the graph. \p dependencies may not have any duplicate entries. A handle to the new node will be returned in \p phGraphNode.

An empty node performs no operation during execution, but can be used for transitive ordering. For example, a phased execution graph with 2 groups of n nodes with a barrier between them can be represented using an empty node and 2*n dependency edges, rather than no empty node and n^2 dependency edges.

\param phGraphNode - Returns newly created node \param hGraph - Graph to which to add the node \param dependencies - Dependencies of the node \param numDependencies - Number of dependencies

\return ::CUDA_SUCCESS, ::CUDA_ERROR_DEINITIALIZED, ::CUDA_ERROR_NOT_INITIALIZED, ::CUDA_ERROR_INVALID_VALUE, \note_graph_thread_safety \notefnerr

\sa ::cuGraphAddNode, ::cuGraphCreate, ::cuGraphDestroyNode, ::cuGraphAddChildGraphNode, ::cuGraphAddKernelNode, ::cuGraphAddHostNode, ::cuGraphAddMemcpyNode, ::cuGraphAddMemsetNode