rmt0WindowCount   uint32
	dupacks           uint32
	flag02            byte
	sockOpt6Cont      byte
	asid              uint16
	resourceName      [8]byte
	resourceId        uint32
	subtask           uint32
	sockOpt           byte
	sockOpt6          byte
	clusterConnFlag   byte
	proto             byte
	targetAppl        [8]byte
	luName            [8]byte
	clientUserId      [8]byte

type substitutions []AST

// add adds a new substitution candidate.
func (subs *substitutions) add(a AST) {
	*subs = append(*subs, a)
}

// subAST maps standard substitution codes to the corresponding AST.
var subAST = map[byte]AST{
	't': &Name{Name: "std"},
	'a': &Qualified{Scope: &Name{Name: "std"}, Name: &Name{Name: "allocator"}},

            // the pool core size will be incremented before submitting
            // all the tasks, then the thread will block waiting for all
            // those subtasks to finish.
            // This ensures the number of running workers is no more than
            // the defined parallism, while making sure the pool will not
            // be exhausted
            //