Method templateTimes

src/util/sparse_matrix.h:111–124

  // multi-thread,  both x and y are pre-allocated
  template <typename W>
  void templateTimes(const W* x, W* y) const {
    SizeR row_range(0, rows());
    int num_threads = FLAGS_num_threads;
    CHECK_GT(num_threads, 0);

    ThreadPool pool(num_threads);
    int num_tasks = rowMajor() ? num_threads * 10 : num_threads;
    for (int i = 0; i < num_tasks; ++i) {
      pool.add([this, x, y, row_range, num_tasks, i](){
          rangeTimes(row_range.evenDivide(num_tasks, i), x, y);
        });
    }
    pool.startWorkers();
  }

 private:
  SArray<size_t> offset_;