cajeta.concurrent.Lock — the no-data RAII gate over the async-aware lock intrinsics. acquire() returns a #LockGuard whose drop releases the lock; tryAcquire() is non-blocking (1 = acquired, 0 = already held) and pairs with a manual releaseLock(). A fiber that hits a held lock parks and yields to its carrier rather than blocking the OS thread. Use a plain Lock to guard state not bundled into a single value; reach for Mutex when there is one piece of data to fuse the lock with.

Lock gate = heap Lock();
LockGuard g #= gate.acquire();   // held while g is alive; auto-release on drop

Lock gate2 = heap Lock();
if (gate2.tryAcquire() == 1) {  // non-blocking attempt
    gate2.releaseLock();        // manual pairing with tryAcquire
}

Methods

Signature
`Lock()` ⚑	Create a fresh, unheld lock
`#LockGuard acquire()`	Block until the lock is held, then return a `#LockGuard` that releases it on drop; bind the guard to a scope
`int32 tryAcquire()`	Non-blocking acquire: `1` if taken (caller must `releaseLock()`), `0` if already held
`void releaseLock()`	Manually release a lock taken via `tryAcquire()`; locks taken via `acquire()` are released by their `LockGuard`

⚑ = @EntryPoint

Lock

Methods

See also