Atomic wait_until;
	wait_until.store ( 1, std::memory_order_relaxed );
	threads[free_index].Run ( [&,a,bot1,result_mode, stat_group_id]
	{
		VectorMap<String, double> params2 = pick ( params );
		wait_until.store ( 0, std::memory_order_relaxed );
	
		execute_bot_in_background ( bot1, a, pick ( params2 ), result_mode, stat_group_id );
	
	
	} );
	
	while ( 1 )
	{
		// memory barrier for visibility semantics
	
	
		// spin wait
		if ( !wait_until.load ( std::memory_order_acquire ) )
		{
			break;
		}
	}

threads[free_index].Run ( THISBACK5 ( execute_bot_in_background, bot1, a, pick(params), result_mode, stat_group_id ) );