TDA4VM: vxProcessGraph() hangs when using a verified empty graph

FredC_LT

Part Number: TDA4VM

While implementing some unit tests, I found out that calling vxProcessGraph() on a graph that has no nodes makes the process hang without feedback, even if vxVerifyGraph() succeeded.

I haven't seen a mention of this behavior in the documentation, is this intended?

Catch2 test below. If you comment the vxProcessGraph() call, then if works. Else, it just hangs.

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TEST_CASE("Empty graph")
{
    // Init
    REQUIRE(0 == appInit());
    vx_context ctx = vxCreateContext();
    REQUIRE(nullptr != ctx);
    // Create
    vx_graph graph = vxCreateGraph(ctx);
    REQUIRE(VX_SUCCESS == vxGetStatus((vx_reference) graph));
    REQUIRE(nullptr != graph);
    REQUIRE(VX_SUCCESS == vxSetReferenceName((vx_reference) graph, "MyGraph"));
    // Verify
    REQUIRE(VX_SUCCESS == vxVerifyGraph(graph));
    
    // Run
    REQUIRE(VX_SUCCESS == vxProcessGraph(graph));
    // Cleanup
    REQUIRE(VX_SUCCESS == vxReleaseGraph(&graph));
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TEST_CASE("Empty graph")
{
	// Init
	REQUIRE(0 == appInit());
	vx_context ctx = vxCreateContext();
	REQUIRE(nullptr != ctx);

	// Create
	vx_graph graph = vxCreateGraph(ctx);
	REQUIRE(VX_SUCCESS == vxGetStatus((vx_reference) graph));
	REQUIRE(nullptr != graph);
	REQUIRE(VX_SUCCESS == vxSetReferenceName((vx_reference) graph, "MyGraph"));

	// Verify
	REQUIRE(VX_SUCCESS == vxVerifyGraph(graph));
	
	// Run
	REQUIRE(VX_SUCCESS == vxProcessGraph(graph));

	// Cleanup
	REQUIRE(VX_SUCCESS == vxReleaseGraph(&graph));
	REQUIRE(VX_SUCCESS == vxReleaseContext(&ctx));
	REQUIRE(0 == appDeInit());
}

over 2 years ago

+1 Brijesh Jadav over 2 years ago

TI__Guru**** 454285 points

Hi FredC_LT,

Sure, we will check this. Most likely this is a bug. But typically we would have atleast one node in the graph, any specific reason you want to run graph without any node?

Regards,

Brijesh

0 FredC_LT over 2 years ago in reply to Brijesh Jadav

Intellectual 796 points

Thanks Brijesh.

I was just implementing a C++ wrapper and testing a virtual class for graphs, that's why it does not have any node.

0 Brijesh Jadav over 2 years ago in reply to FredC_LT

TI__Guru**** 454285 points

Hi FredC_LT,

I would recommend keeping atleast one node in the graph before calling vxProcessGraph.

Regards,

Brijesh

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TDA4VM: vxProcessGraph() hangs when using a verified empty graph