Method milestone_update_api_time

src/proxy/http/HttpSM.cc:8862–8892

Update the milestone state given the milestones and timer.

/// Update the milestone state given the milestones and timer.
void
HttpSM::milestone_update_api_time()
{
  // Bit of funkiness - we set @a api_timer to be the negative value when we're tracking
  // non-active API time. In that case we need to make a note of it and flip the value back
  // to positive.
  if (api_timer) {
    ink_hrtime delta;
    bool       active = api_timer >= 0;
    if (!active) {
      api_timer = -api_timer;
    }
    // Zero or negative time is a problem because we want to signal *something* happened
    // vs. no API activity at all. This can happen due to graininess or real time
    // clock adjustment.
    delta     = std::max<ink_hrtime>(1, ink_get_hrtime() - api_timer);
    api_timer = 0;

    if (0 == milestones[TS_MILESTONE_PLUGIN_TOTAL]) {
      milestones[TS_MILESTONE_PLUGIN_TOTAL] = milestones[TS_MILESTONE_SM_START];
    }
    milestones[TS_MILESTONE_PLUGIN_TOTAL] += delta;
    if (active) {
      if (0 == milestones[TS_MILESTONE_PLUGIN_ACTIVE]) {
        milestones[TS_MILESTONE_PLUGIN_ACTIVE] = milestones[TS_MILESTONE_SM_START];
      }
      milestones[TS_MILESTONE_PLUGIN_ACTIVE] += delta;
    }
    this_ethread()->metrics.record_api_time(delta);
  }
}