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declare type Mode = 'S' | 'X';
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/**
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* 模拟一个读写锁，用于同步。
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* 注意，千万不要发生自己等自己
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*/
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export declare class RWLock {
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private readNumber;
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private writeNumber;
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private readWaiter;
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private writeWaiter;
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constructor();
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acquire(mode: Mode): Promise<void>;
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release(): void;
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}
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export {};
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