Method DoWrite

src/leveldb/benchmarks/db_bench.cc:711–739

  void WriteRandom(ThreadState* thread) { DoWrite(thread, false); }

  void DoWrite(ThreadState* thread, bool seq) {
    if (num_ != FLAGS_num) {
      char msg[100];
      snprintf(msg, sizeof(msg), "(%d ops)", num_);
      thread->stats.AddMessage(msg);
    }

    RandomGenerator gen;
    WriteBatch batch;
    Status s;
    int64_t bytes = 0;
    for (int i = 0; i < num_; i += entries_per_batch_) {
      batch.Clear();
      for (int j = 0; j < entries_per_batch_; j++) {
        const int k = seq ? i + j : (thread->rand.Next() % FLAGS_num);
        char key[100];
        snprintf(key, sizeof(key), "%016d", k);
        batch.Put(key, gen.Generate(value_size_));
        bytes += value_size_ + strlen(key);
        thread->stats.FinishedSingleOp();
      }
      s = db_->Write(write_options_, &batch);
      if (!s.ok()) {
        fprintf(stderr, "put error: %s\n", s.ToString().c_str());
        exit(1);
      }
    }
    thread->stats.AddBytes(bytes);
  }

  void ReadSequential(ThreadState* thread) {
    Iterator* iter = db_->NewIterator(ReadOptions());