Specs

which_children(supervisor()) :: [
  {term() | :undefined, child() | :restarting, :worker | :supervisor,
   module() | :dynamic}
]

Returns a list with information about all children of the given supervisor.

Note that calling this function when supervising a large number of children under low memory conditions can cause an out of memory exception.

This function returns a list of {id, child, type, modules} tuples, where:

• id - as defined in the child specification

• child - the PID of the corresponding child process, :restarting if the process is about to be restarted, or :undefined if there is no such process

• type - :worker or :supervisor, as specified by the child specification

• modules - as specified by the child specification