System for automatic garbage collection using strong and weak en

Details System for automatic garbage collection using strong and weak en System for automatic garbage collection using strong and weak en

1992-04-06

1995-03-14

Black, Thomas G.

Boots, shoes, and leggings

364DIG1, 3642455, 3642821, 395425, G06F 1540

Patent

active

053983343

ABSTRACT:
The present invention solves both the dangling pointer problem and the garbage collection problem in software systems. Safe object pointers are divided into strong and weak pointers. Strong pointers point to an object unless they are explicitly assigned a new value, set to null, or destroyed. Weak pointers point to an object as long as the object has not been destroyed. If an object is destroyed, the weak pointer effectively becomes null, thus allowing the breaking up of cycles of references in a computer memory.

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patent: 4912629 (1990-03-01), Shuler, Jr.
patent: 5241673 (1993-08-01), Schelvis
patent: 5274804 (1993-12-01), Jackson et al.

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