Method openWriteStartBegin

src/iocore/cache/CacheWrite.cc:778–804

handle lock failures from main Cache::open_write entry points below

// handle lock failures from main Cache::open_write entry points below
int
CacheVC::openWriteStartBegin(int /* event ATS_UNUSED */, Event * /* e ATS_UNUSED */)
{
  intptr_t err;
  cancel_trigger();
  if (_action.cancelled) {
    return free_CacheVC(this);
  }
  if (((err = stripe->open_write_lock(this, false, 1)) > 0)) {
    ts::Metrics::Counter::increment(cache_rsb.status[op_type].failure);
    ts::Metrics::Counter::increment(stripe->cache_vol->vol_rsb.status[op_type].failure);
    free_CacheVC(this);
    _action.continuation->handleEvent(CACHE_EVENT_OPEN_WRITE_FAILED, reinterpret_cast<void *>(-err));
    return EVENT_DONE;
  }
  if (err < 0) {
    VC_SCHED_LOCK_RETRY();
  }
  if (f.overwrite) {
    SET_HANDLER(&CacheVC::openWriteOverwrite);
    return openWriteOverwrite(EVENT_IMMEDIATE, nullptr);
  } else {
    // write by key
    SET_HANDLER(&CacheVC::openWriteMain);
    return callcont(CACHE_EVENT_OPEN_WRITE);
  }
}