// 2018/09/04 - contributed by Glen F.
//
// An example to show dispatching multiple Taskflow graphs as
// separate batches (which will all run on the same Threadpool).
//
// It first dispatches 5 "independent" tasks (#100-104),
// then launches four batches (0-3) of a task graph with inter-dependencies,
// then it waits for the 100-104 tasks to finish before
// launching 5 more independent tasks (#200-204).

#include 

// Procedure: syncLog
// synchronize cout across threads
void syncLog(std::string const& msg)
{
  static std::mutex logMutex;
  std::lock_guard lock(logMutex);
  std::cout