Type-level safe mutable global access, with support for recursive immutable locking.
use global::Global;
// The global value.
static VALUE: Global<i32> = Global::new();
// Spawn 100 threads and join them all.
let mut threads = Vec::new();
for _ in 0..100 {
threads.push(std::thread::spawn(|| {
*VALUE.lock_mut().unwrap() += 1;
}));
}
for thread in threads {
thread.join().unwrap();
}
// This value is guaranteed to be 100.
assert_eq!(*VALUE.lock().unwrap(), 100);