You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: recycler.rs
    path of file: ./repos/solana/perf/src
    
    the code of the file until where you have to start completion: use {
    rand::{thread_rng, Rng},
    std::sync::{
        atomic::{AtomicBool, AtomicUsize, Ordering},
        Arc, Mutex, Weak,
    },
};

// A temporary burst in the workload can cause a large number of allocations,
// after which they will be recycled and still reside in memory. If the number
// of recycled objects stays above below limit for long, they will be deemed as
// redundant since they are not getting reused. The recycler will then shrink
// by releasing objects above this threshold. This limit aims to maintain a
// cushion against *normal* variations in the workload while bounding the
// number of redundant garbage collected objects after temporary bursts.
const RECYCLER_
    
    pub fn recycle(&self, x: T) {
        let len = {
            let mut gc = self.gc.lock().expect("recycler lock in pub fn recycle");
            gc.push(x);
            const SIZE_FACTOR_AFTER_SHRINK: usize = RECYCLER_SHRINK_SIZE * RECYCLER_SHRINK_WINDOW;
            if gc.len() > RECYCLER_SHRINK_SIZE
                && self.size_factor.load(Ordering::Acquire) >= SIZE_FACTOR_AFTER_SHRINK
            {
                self.stats.freed.fetch_add(
                    gc.len().saturating_sub(RECYCLER_SHRINK_SIZE),
                    Ordering::Relaxed,
                );
                for mut x in gc.drain(RECYCLER_SHRINK_SIZE..) {
                    x.set_recycler(Weak::default());
                }
                self.size_factor
                    .store(SIZE_FACTOR_AFTER_SHRINK, Ordering::Release);
            }
            gc.len()
        };

        let max_gc = self.stats.max_gc.load(Ordering::Relaxed);
        if len > max_gc {
            // this is not completely accurate, but for most cases should be fine.
            let _ = self.stats.max_gc.compare_exchange(
                max_gc,
                len,
                Ordering::Relaxed,
                Ordering::Relaxed,
            );
        }
        let total = self.stats.total.load(Ordering::Relaxed);
        let reuse = self.stats.reuse.load(Ordering::Relaxed);
        let freed = self.stats.freed.load(Ordering::Relaxed);
        datapoint_debug!(
            "recycler",
            ("gc_len", len as i64, i64),
            ("total", total as i64, i64),
            ("freed", freed as i64, i64),
            ("reuse", reuse as i64, i64),
        );
    }