Function TryDeleteCacheFile

src/data/sparse_page_source.cc:22–32

}

void TryDeleteCacheFile(const std::string& file) {
  // Don't throw, this is called in a destructor.
  auto exists = std::filesystem::exists(file);
  if (!exists) {
    LOG(WARNING) << "External memory cache file " << file << " is missing.";
  }
  if (std::remove(file.c_str()) != 0) {
    LOG(WARNING) << "Couldn't remove external memory cache file " << file
                 << "; you may want to remove it manually";
  }
}

std::string MakeCachePrefix(std::string cache_prefix) {
  std::string_view constexpr kDftname{"DMatrix"};