Jemalloc and FreeBSD question

[Valerio Besozzi]

Hi,
I'm writing my CS thesis about various memory allocator. I found various resources about jemalloc but I think some of these are old. I wanted to kindly ask if you could give me some information regarding malloc()/free()/realloc().
I already contacted the developers on the official gitter and they provided me useful resources but I was wondering since this allocator is also used on FreeBSD (since this is practically where it was born), if someone more experienced than me could give me some explanations regarding the implementation of these functions.
Also, any anecdotes about the history of this allocator and FreeBSD would be greatly appreciated.

Greetings,

Valerio Besozzi