cajeta.concurrent.FiberLocal — ambient per-request state: a fiber-keyed, scope-restored binding, the sound replacement for a thread-pool ThreadLocal/MDC. Fibers are single-use, so a per-fiber binding has naturally request-scoped lifetime and cannot leak into a later, unrelated request. A child spawned inside a scope inherits the binding automatically; T may be any type, reference or primitive — the value is boxed before being handed to the per-fiber runtime store, so a primitive round-trips correctly.

FiberLocal<int64> requestId = heap FiberLocal<int64>();
requestId.where(42L, () -> {
    int64 rid = requestId.orElse(0L);   // 42 anywhere inside the extent
});
boolean bound = requestId.isBound();    // false — binding restored on return

Methods

Signature
`FiberLocal()` ⚑	A FiberLocal key; `get()` on an unbound fiber throws — use `orElse`/`isBound`
`void where(#T value, () -> void body)`	Bind `value` for the dynamic extent of `body`, restoring the prior binding when `body` returns or throws
`T get()`	The current binding; throws when unbound
`T orElse(T fallback)`	The current binding, or `fallback` when unbound; never throws
`boolean isBound()`	Whether a binding is in effect on the current fiber

⚑ = @EntryPoint

FiberLocal<T>

Methods

See also