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Swoole\Coroutine\Lock::lock — Acquire the lock, blocking if necessary
When executing the lock operation, if the lock is already held by another coroutine, the current coroutine will actively yield CPU control and enter a suspended state. When the coroutine holding the lock calls unlock(), the waiting coroutine will be awakened and try to acquire the lock again.
У цієї функції немає параметрів.
Returns true if the lock was acquired successfully,
false otherwise.