Method CreateCCtx

cpp/src/arrow/util/compression_zstd.cc:229–246

 private:
  Result<CCtxPtr> CreateCCtx() const {
    CCtxPtr cctx{ZSTD_createCCtx(), ZSTD_freeCCtx};
    if (cctx == nullptr) {
      return Status::OutOfMemory("ZSTD_CCtx create failed");
    }
    auto ret =
        ZSTD_CCtx_setParameter(cctx.get(), ZSTD_c_compressionLevel, compression_level_);
    if (ZSTD_isError(ret)) {
      return ZSTDError(ret, "ZSTD_CCtx create failed: ");
    }
    for (auto& [key, value] : compression_context_params_) {
      ret = ZSTD_CCtx_setParameter(cctx.get(), static_cast<ZSTD_cParameter>(key), value);
      if (ZSTD_isError(ret)) {
        return ZSTDError(ret, "ZSTD_CCtx create failed: ");
      }
    }
    return cctx;
  }

  Result<DCtxPtr> CreateDCtx() const {
    DCtxPtr dctx{ZSTD_createDCtx(), ZSTD_freeDCtx};