Method Benchmark

src/leveldb/benchmarks/db_bench.cc:397–418

 public:
  Benchmark()
      : cache_(FLAGS_cache_size >= 0 ? NewLRUCache(FLAGS_cache_size) : nullptr),
        filter_policy_(FLAGS_bloom_bits >= 0
                           ? NewBloomFilterPolicy(FLAGS_bloom_bits)
                           : nullptr),
        db_(nullptr),
        num_(FLAGS_num),
        value_size_(FLAGS_value_size),
        entries_per_batch_(1),
        reads_(FLAGS_reads < 0 ? FLAGS_num : FLAGS_reads),
        heap_counter_(0) {
    std::vector<std::string> files;
    g_env->GetChildren(FLAGS_db, &files);
    for (size_t i = 0; i < files.size(); i++) {
      if (Slice(files[i]).starts_with("heap-")) {
        g_env->DeleteFile(std::string(FLAGS_db) + "/" + files[i]);
      }
    }
    if (!FLAGS_use_existing_db) {
      DestroyDB(FLAGS_db, Options());
    }
  }

  ~Benchmark() {
    delete db_;