Would you pay for GC?
rumpf_a at web.de
Tue Jan 25 09:42:25 UTC 2022
On Tuesday, 25 January 2022 at 07:22:36 UTC, Elronnd wrote:
> On Tuesday, 25 January 2022 at 07:13:41 UTC, Paulo Pinto wrote:
>> ARC will also not compete, unless one goes the extra mile of
>> making the compiler ARC aware, elide retain/release calls, do
>> cascade deletions in background threads, take care on cascade
>> deletions to avoid stack overflows on destructor calls,
>> provide multicore friendly versions of them,.....
> Indeed. See Bacon et al, 'Unified Theory of Garbage
> Collection': increasingly sophisticated RC approaches tracing
> (and vice versa). So it's a bit strange to assume we can do
> one but not the other. And tracing makes a better starting
> point due to the generational hypothesis.
Only if you take the "deferred" RC route, which
Swift/Rust/C++/Nim do not! Without the "deferred" aspect RC
remains quite a different beast. Different algorithm, different
runtime profiles, different memory consumptions, enables
different optimizations and of course different problems.
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