How do you completely shut down and re-initialize jemalloc at runtime?

[Paul Pedriana]

In the middle of running my app I want to shut down jemalloc and restore 
it to its state at application startup and be able to then use it as if 
new. In shutting it down I would of course make sure that there are no 
outstanding memory in use from it. Is this possible? If so how would I 
do it?

Thanks.