Function fileExists

cachelib/allocator/NvmCacheState.cpp:39–41

const folly::StringPiece kShouldDropNvmCache = "IceRoll";

bool fileExists(const std::string& file) {
  return util::getStatIfExists(file, nullptr);
}

std::string constructFilePath(folly::StringPiece cacheDir,
                              folly::StringPiece name) {