コード例 #1
0
ファイル: concurrent-shared-store.cpp プロジェクト: 2bj/hhvm
bool ConcurrentTableSharedStore::store(const String& key, const Variant& value,
                                       int64_t ttl,
                                       bool overwrite /* = true */,
                                       bool limit_ttl /* = true */) {
  StoreValue *sval;
  APCHandle* svar = construct(value);
  ConditionalReadLock l(m_lock, !apcExtension::ConcurrentTableLockFree ||
                                m_lockingFlag);
  const char *kcp = strdup(key.data());
  bool present;
  time_t expiry = 0;
  bool overwritePrime = false;
  {
    Map::accessor acc;
    present = !m_vars.insert(acc, kcp);
    sval = &acc->second;
    if (present) {
      free((void *)kcp);
      if (overwrite || sval->expired()) {
        // if ApcTTLLimit is set, then only primed keys can have expiry == 0
        overwritePrime = (sval->expiry == 0);
        if (sval->inMem()) {
          sval->var->unreferenceRoot();
        } else {
          // mark the inFile copy invalid since we are updating the key
          sval->sAddr = nullptr;
          sval->sSize = 0;
        }
      } else {
        svar->unreferenceRoot();
        return false;
      }
    }
    int64_t adjustedTtl = adjust_ttl(ttl, overwritePrime || !limit_ttl);
    if (check_noTTL(key.data(), key.size())) {
      adjustedTtl = 0;
    }
    sval->set(svar, adjustedTtl);
    expiry = sval->expiry;
  }
  if (expiry) {
    addToExpirationQueue(key.data(), expiry);
  }
  if (apcExtension::ExpireOnSets) {
    purgeExpired();
  }
  return true;
}
コード例 #2
0
bool ConcurrentTableSharedStore::store(CStrRef key, CVarRef value, int64 ttl,
                                       bool overwrite /* = true */) {
  StoreValue *sval;
  SharedVariant* svar = construct(value);
  ConditionalReadLock l(m_lock, !RuntimeOption::ApcConcurrentTableLockFree ||
                                m_lockingFlag);
  const char *kcp = strdup(key.data());
  bool present;
  time_t expiry = 0;
  bool overwritePrime = false;
  {
    Map::accessor acc;
    present = !m_vars.insert(acc, kcp);
    sval = &acc->second;
    bool update = false;
    if (present) {
      free((void *)kcp);
      if (overwrite || sval->expired()) {
        // if ApcTTLLimit is set, then only primed keys can have expiry == 0
        overwritePrime = (sval->expiry == 0);
        if (sval->inMem()) {
          stats_on_update(key.get(), sval, svar,
                          adjust_ttl(ttl, overwritePrime));
          sval->var->decRef();
          update = true;
        } else {
          // mark the inFile copy invalid since we are updating the key
          sval->sAddr = NULL;
          sval->sSize = 0;
        }
      } else {
        svar->decRef();
        return false;
      }
    }
    int64 adjustedTtl = adjust_ttl(ttl, overwritePrime);
    if (check_noTTL(key.data())) {
      adjustedTtl = 0;
    }
    sval->set(svar, adjustedTtl);
    expiry = sval->expiry;
    if (!update) {
      stats_on_add(key.get(), sval, adjustedTtl, false, false);
    }
  }
  if (expiry) {
    addToExpirationQueue(key.data(), expiry);
  }
  if (RuntimeOption::ApcExpireOnSets) {
    purgeExpired();
  }
  if (present) {
    log_apc(std_apc_update);
  } else {
    log_apc(std_apc_new);
    if (RuntimeOption::EnableStats && RuntimeOption::EnableAPCKeyStats) {
      string prefix = "apc.new." + GetSkeleton(key);
      ServerStats::Log(prefix, 1);
    }
  }
  return true;
}