Call graph
（重定向自Callgraph）
![A call graph generated for a simple computer program in Python.](/Images/godic/202501/02/A_Call_Graph_generated_by_pycallgraph2913.png")
A call graph (also known as a call multigraph) is a directed graph (and more specifically a flow graph) that represents calling relationships between subroutines in a computer program. Specifically, each node represents a procedure and each edge (f, g) indicates that procedure f calls procedure g. Thus, a cycle in the graph indicates recursive procedure calls.