Method state_api_callback

src/proxy/http/HttpSM.cc:1322–1353

InkAPI.cc calls us directly here to avoid problems with setting and changing the default_handler function. As such, this is an entry point and needs to handle the reentrancy counter and deallocation of the state machine if necessary

//    deallocation of the state machine if necessary
//
int
HttpSM::state_api_callback(int event, void *data)
{
  ink_release_assert(magic == HTTP_SM_MAGIC_ALIVE);

  ink_assert(reentrancy_count >= 0);
  reentrancy_count++;

  this->milestone_update_api_time();

  STATE_ENTER(&HttpSM::state_api_callback, event);

  state_api_callout(event, data);

  // The sub-handler signals when it is time for the state
  //  machine to exit.  We can only exit if we are not reentrantly
  //  called otherwise when the our call unwinds, we will be
  //  running on a dead state machine
  //
  // Because of the need for an api shutdown hook, kill_this()
  //  is also reentrant.  As such, we don't want to decrement
  //  the reentrancy count until after we run kill_this()
  //
  if (terminate_sm == true && reentrancy_count == 1) {
    kill_this();
  } else {
    reentrancy_count--;
    ink_assert(reentrancy_count >= 0);
  }

  return VC_EVENT_CONT;
}

int
HttpSM::state_api_callout(int event, void * /* data ATS_UNUSED */)