Memory management of local variables upon a change of context

Details Memory management of local variables upon a change of context Memory management of local variables upon a change of context

2003-07-31

2009-06-30

Bragdon, Reginald G (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S118000, C711S129000, C711S154000, C711S156000, C711S173000

Reexamination Certificate

active

07555611

ABSTRACT:
A cache subsystem may comprise a multi-way set associative cache and a data memory that holds a contiguous block of memory defined by an address stored in a register. Local variables (e.g., Java local variables) may be stored in the data memory. The data memory preferably is adapted to store two groups of local variables. A first group comprises local variables associated with finished methods and a second group comprises local variables associated with unfinished methods. Further, local variables are saved to, or fetched from, external memory upon a context change based on a threshold value differentiating the first and second groups. The first value may comprise a threshold address or an allocation bit associated with each of a plurality of lines forming the data memory.

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