通过将Java引用实现为shared_ptr，是否有可能摆脱Java中的垃圾收集器？

Question

将java引用实现为shared_ptr似乎是合理的，并且根本不使用垃圾回收。

Answer 1

It is possible, it is not efficient at all.

The Oracle's JVM did used reference counting GC in the past, it was slow and not effective. They switched to more modern GC algorithms like generational GC algorithms.

Do not that shared_ptr is acceptable in c++ out of the sheer fact that the vast majority of objects in c++ are allocated in the stack, so the reference counting nature of shared_ptr is barely noticeable. On Java, the vast majority of objects are allocated in the heap, so you'd think twice before you start counting them.