mdbx++: добавлена фиксация транзакции с получением информации о задержках.

mdbx.h++

@@ -3875,12 +3875,31 @@ public:
 
   //----------------------------------------------------------------------------
 
-  /// \brief Abandon all the operations of the transaction instead of saving
+  /// \brief Abandon all the operations of the transaction
-  /// them.
+  /// instead of saving ones.
   void abort();
 
   /// \brief Commit all the operations of a transaction into the database.
   void commit();
+
+  using commit_latency = MDBX_commit_latency;
+
+  /// \brief Commit all the operations of a transaction into the database
+  /// and collect latency information.
+  void commit(commit_latency *);
+
+  /// \brief Commit all the operations of a transaction into the database
+  /// and collect latency information.
+  void commit(commit_latency &latency) { return commit(&latency); }
+
+  /// \brief Commit all the operations of a transaction into the database
+  /// and return latency information.
+  /// \returns latency information of commit stages.
+  commit_latency commit_get_latency() {
+    commit_latency result;
+    commit(&result);
+    return result;
+  }
 };
 
 /// \brief Unmanaged cursor.

src/mdbx.c++

@@ -1424,6 +1424,15 @@ void txn_managed::commit() {
     MDBX_CXX20_UNLIKELY err.throw_exception();
 }
 
+void txn_managed::commit(commit_latency *latency) {
+  const error err =
+      static_cast<MDBX_error_t>(::mdbx_txn_commit_ex(handle_, latency));
+  if (MDBX_LIKELY(err.code() != MDBX_THREAD_MISMATCH))
+    MDBX_CXX20_LIKELY handle_ = nullptr;
+  if (MDBX_UNLIKELY(err.code() != MDBX_SUCCESS))
+    MDBX_CXX20_UNLIKELY err.throw_exception();
+}
+
 //------------------------------------------------------------------------------
 
 bool txn::drop_map(const char *name, bool throw_if_absent) {