Struct TlsCounter 

pub struct TlsCounter { /* private fields */ }

Sharded atomic counter optimized for concurrent access from multiple threads.

Uses cache-line-padded shards to prevent false sharing. Each thread is assigned a shard index, so updates from different threads typically hit different cache lines.

This design handles interleaved access to multiple counters efficiently - unlike a single-slot cache approach, there’s no “cache thrashing” when alternating between counters.

Memory

Each counter uses NUM_SHARDS × 128 bytes = 8KB (with 64 shards). This is larger than a simple AtomicU64 but virtually eliminates contention.

Implementations

impl TlsCounter

pub fn new() -> Self

pub fn add(&self, value: u64)

pub fn inc(&self)

pub fn get(&self) -> u64

Trait Implementations

impl Debug for TlsCounter

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for TlsCounter

fn default() -> Self

Returns the “default value” for a type.