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You can always pass around pointers to immutable data structures which only implement read interfaces.
by cmccabe 13y ago
You can always pass around pointers to immutable data structures which only implement read interfaces.
- rdtsc 13y agoExactly. Or maybe copy-on-duplicate-access detection. So keep a single copy on heap but when accessed first time by second context/thread then make a copy of it. Azul's Java GC plays some of these games with read barriers. They detect reads to certain pointers and set callbacks to run custom code when they happen.