sync

Use sync for named locks, scoped locking, one-time execution, and wait groups across threads.

import "std:sync"

API reference

sync

Method	Returns	Notes
sync.lock(name: string)	void	Acquires the initialized named lock, waiting if it is held.
sync.tryLock(name: string)	boolean	Attempts to acquire the named lock without blocking. Returns true if acquired, false if held.
sync.unlock(name: string)	void	Releases a named lock; missing names are ignored.
sync.withLock(name: string, fn: any)	any	Acquires name, executes fn(), and guarantees lock release on exit. Returns fn()'s result.
sync.once(name: string, fn: any)	any	Runs fn() at most once across all threads for the given name.
sync.waitGroup()	*WaitGroup	Creates a new WaitGroup for coordinating multiple asynchronous tasks.

*WaitGroup

Method	Returns	Notes
waitGroup.add(delta?: number)	void	Adds delta (default 1) to the wait group counter.
waitGroup.done()	void	Decrements the wait group counter by 1.
waitGroup.wait()	void	Blocks until the wait group counter reaches 0.

Notes

• Prefer import "std:sync"; the older import "osl/sync" spelling remains supported.

• Importing thread activates concurrent compilation; server-style packages share the pin-trigger path.