Comment by rtpg

those linked tests are extremely disingenuous, it only shows the fixed cost of FFIs.

Considering that in C the plusone call is 4 or so cycles, and the Java example is 5 times slower, that's only 20 or so cycles. If the function we're FFIing into is 400 cycles, that's only a 1% decrease in speed. I'm willing to pay that price if it means not having to wake up to everything being vulnerable every couple of months.