Example async memory reporting

async_reporter.cpp

// pseudo-pythonish-cpp, whatever

total_reporters = len(reporters)

do_memory_reports:
  // this is on the main thread
  for r in reporters:
    main_thread_dispatch(new DoReportEvent(r));
  
  start_timer(on_report_done);
    
on_report_done(r):
  total_reporters--;
  if (total_reporters == 0 || is_timed_out()):
    // call the finishReporting callback that was registered
    cancel_timer();
    finishReporting();
  else:
    // do nothing, just wait for the next event

do_report(r):
  // this is called on main thread, it's a different event (do_memory_reports has completed)
  r->report(); // this can dispatch events to other threads etc
  
example_reporter:
  post_task_to_other_thread(runs_on_other_thread);

runs_on_other_thread:
  // this is on the non-main-thread
  // do some stuff
  // signal that this reporter is done
  main_thread_dispatch(on_report_done);