Method rollbackToSavepoint

src/jrd/tra.cpp:4039–4073

}

void jrd_tra::rollbackToSavepoint(thread_db* tdbb, SavNumber number)
/**************************************
 *
 *	 r o l l b a c k T o S a v e p o i n t
 *
 **************************************
 *
 * Functional description
 *	Rollback savepoints up to one with given number.
 *  There may be cases when savepoint with given number does not exist.
 *  Rollback all savepoints with bigger numbers then, but not more.
 *  These cases most likely is a bug in logic somewhere, so assert is here.
 *
 **************************************/
{
	Jrd::ContextPoolHolder context(tdbb, tra_pool);

	// Merge all savepoints (except the given one) into a single one
	while (tra_save_point && tra_save_point->getNumber() > number &&
		tra_save_point->getNext() && tra_save_point->getNext()->getNumber() >= number)
	{
		REPL_save_cleanup(tdbb, this, tra_save_point, true);
		tra_save_point = tra_save_point->rollforward(tdbb);
	}

	// Check that savepoint with the given number really exists
	fb_assert(tra_save_point && tra_save_point->getNumber() == number);

	if (tra_save_point && tra_save_point->getNumber() >= number) // second line of defence
	// under no circumstances a savepoint with smaller number should be rolled back
	{
		// Undo the savepoint
		rollbackSavepoint(tdbb);
	}
}


void jrd_tra::releaseSavepoint(thread_db* tdbb)