Method GcAndTryAgain

r/src/memorypool.cpp:58–71

 private:
  template <typename Call>
  arrow::Status GcAndTryAgain(const Call& call) {
    if (call().ok()) {
      return arrow::Status::OK();
    } else {
      // ARROW-10080: Allocation may fail spuriously since the garbage collector is lazy.
      // Force it to run then try again in case any reusable allocations have been freed.
      arrow::Status r_call = SafeCallIntoRVoid([] {
        cpp11::function gc = cpp11::package("base")["gc"];
        gc();
      });
      ARROW_RETURN_NOT_OK(r_call);
      return call();
    }
  }

  arrow::MemoryPool* pool_;
};