Deterministic destruction RAII style is handled in GCd languages with try-with-resources or using type constructs. Modern collectors like G1 don't do full mark

Deterministic destruction RAII style is handled in GCd languages with try-with-resources or using type constructs. Modern collectors like G1 don't do full mark/sweeps of the entire heap in normal operation - only in rare cases like if you request a memory profile, or if the entire process runs out of RAM and needs to do a hard stop. And reference counting isn't something you can just automatically do due to the presence of cycles. Notwithstanding these things, you may be interested in Graal, and specifically this talk on automatic region allocation: https://www.youtube.com/watch?v=3JphI1Z0MTk&list=PLX8CzqL3ArzUo2dtMurvpUTAaujPMeuuU&index=12 https://www.youtube.com/watch?v=3JphI1Z0MTk&list=PLX8CzqL3Ar... http://www.oracle.com/technetwork/java/jvmls2015-wimmer-2637907.pdf http://www.oracle.com/technetwork/java/jvmls2015-wimmer-2637...