[gpderetta]

Any moderately performance sensitive code in C++, assuming it needs allocations at all will use a dedicated allocator.

While it is hard to beat existing general purpose allocators in all the scenarios, it is easy for specific use cases.

[kjeetgill]

True but these approaches in both C++ and Java start to converge: Arena allocation vs Pooling/unsafe. The question is, how annoying is your performance insensitive code?