log_prefetcher_impl.hpp

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#ifndef MYSQL_CSA_RELAY_LOG_PREFETCHER_HPP
#define MYSQL_CSA_RELAY_LOG_PREFETCHER_HPP
 
#include <optional>
 
#include "sql/changestreams/apply/storage/relay_log/log_prefetcher.h"
 
namespace mysql::csa {
 
template <typename P>
std::optional<Log_prefetcher::Elem_type> Log_prefetcher::dequeue(
    P &&wait_predicate) {
  auto [elem, is_valid] = m_cache.dequeue(wait_predicate);
  if (is_valid) {
    m_bytes_fetched -= elem->size();
    return elem;
  }
  return {};
}
 
}  // namespace mysql::csa
 
#endif  // MYSQL_CSA_RELAY_LOG_PREFETCHER_HPP