$WW,1$$SP,"",BI=1$ There is a symbol (hash) table for each task. When a sym is not found, the parent task's sym table is checked. All tasks chain back to the $FG,2$Zenith$FG$ task. ZenithOS sym tables are implemented with an array of linked-lists. A num is generated from a string by $LK,"HashStr",A="MN:HashStr"$() to index into the array of linked-lists. Multiple strings can generate the same num, so linked-lists are built. Newer entries overshadow older ones. There are various types of entries. See $LK,"Hash Entry Types",A="MN:HTT_EXPORT_SYS_SYM"$. $FG,5$Symbol Look-up$FG$ (Used many places including the $LK,"JIT Compiler",A="FF:::/Compiler/Lex.HC,HashFind"$ and $LK,"Loader",A="FF:::/Kernel/KLoad.HC,HashFind"$.) 1) Symbol name is $LK,"hashed",A="MN:SYS_HASH_STR"$ by adding and shifting the ASCII of all chars. 2) $LK,"hash table",A="MN:CHashTable"$->body[] array is indexed. 3) Linked-list is traversed until match of text and type of entry. 4) If not found, $LK,"hash table",A="MN:CHashTable"$->next table is searched. Duplicate entries are allowed -- they overshadow old entries. $FG,5$Address-to-Symbol Look-up$FG$ (Slow because not important. We could use trees.) 1) FunSeg Cache is $LK,"scanned",A="MN:FunSegCacheFind"$. 2) Hash Tables are $LK,"scanned",A="MN:FunSegFind"$. ��������������0������Cat�H��_���Cbs�h�������Dog�����_���Dog���������Bird�Z�������p�������x�����������o�������������������>������<������@������P��o��� )���'���)���?��� )���?���%��?��� %��?���%��'��� %��'���)���'��� =���'���=���?��� ���������������� ���������������� Q���'���Q���?��� ��'�����?��� -��'���-��?��� A��'���A��?��� ��'�����?��� &������������� ������������ ������&������� &�������&������� :�������:������� N�������N������� b�������b������� v�������v������� 2������2������ F������F������ Z������Z������ ������������ �������������� �������������� �������������� �������������� ���?��������� ������������ ���������?��� ���?������?����������&����������3���)���3�������������C����