Method createIndex

cachelib/navy/block_cache/BlockCache.cpp:149–182

}

std::unique_ptr<Index> BlockCache::createIndex(
    const BlockCacheIndexConfig& indexConfig,
    const NavyPersistParams& persistParams,
    bool useCombinedEntryBlock,
    const std::string& name) {
  if (indexConfig.isFixedSizeIndexEnabled()) {
    return std::make_unique<FixedSizeIndex>(
        indexConfig.getNumChunks(),
        indexConfig.getNumBucketsPerChunkPower(),
        indexConfig.getNumBucketsPerMutex(),
        (indexConfig.useShmToPersist() || persistParams.useShm)
            ? (persistParams.shmManager.has_value()
                   ? &(persistParams.shmManager.value().get())
                   : nullptr)
            : nullptr,
        name,
        useCombinedEntryBlock,
        combinedEntryMgr_.get(),
        bindThis(&BlockCache::onKeyHashRetrievalFromLocation, *this));
  } else {
    // Combined entry block is not supported for sparse map index
    if (useCombinedEntryBlock) {
      XLOG(WARN,
           "Combined entry block is set to be used, however sparse map index "
           "doesn't support it. It will be ignored.");
    }
    return std::make_unique<SparseMapIndex>(
        indexConfig.getNumSparseMapBuckets(),
        indexConfig.getNumBucketsPerMutex(),
        indexConfig.isTrackItemHistoryEnabled()
            ? SparseMapIndex::ExtraField::kItemHitHistory
            : SparseMapIndex::ExtraField::kTotalHits);
  }
}

BlockCache::~BlockCache() { regionManager_.drain(); }