Blocks the current thread until all jss::rcu_reader objects constructed
before this call to jss::rcu_synchronize have been destroyed.
void rcu_synchronize();
As if:
std::atomic<bool> done(false); jss::rcu_retire(&done,[](std::atomic<bool>*p){ p->store(true); }); jss::rcu_barrier();
#include <jss/rcu.hpp>