Difference between revisions of "Focus"
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| − | The node from which a [[quantum]] arrives is a node's [[parent]] and is accessed via the [[nodePARENT]] association. The value of ''nodePARENT'' is maintained by [[nodal reduction]] rather than by the loop insert/remove functions so that moving a node from one node's focus to another's is an O<sub>1</sub>. | + | The node from which a [[quantum]] arrives is a node's [[parent]] and is accessed via the [[nodePARENT]] association. The value of ''nodePARENT'' is maintained by [[nodal reduction]] rather than by the loop insert/remove functions so that moving a node from one node's focus to another's is an O<sub>1</sub>. At [[w:runtime|runtime]], the ''parent'' of the currently executing ''[[this]]'' node is also available as a global variable. |
Revision as of 22:44, 12 November 2006
The value of a node is obtained by using 0 as the binary traversal key (i.e association which actually means not to traverse anywhere at all). A node's focus is the item in its loop which will receive the next quantum of execution from nodal reduction.
Parent
The node from which a quantum arrives is a node's parent and is accessed via the nodePARENT association. The value of nodePARENT is maintained by nodal reduction rather than by the loop insert/remove functions so that moving a node from one node's focus to another's is an O1. At runtime, the parent of the currently executing this node is also available as a global variable.
