Mutex

A mutex (mutual exclusion lock) for async functions. It allows only one async task to access a critical section at a time.

Signature

class Mutex {
  isLocked: boolean;

  acquire(): Promise<void>;
  release(): void;
}

Properties

• isLocked (boolean): Checks if the mutex is currently locked.

Methods

• acquire (() => Promise<void>): Acquires the mutex, blocking if necessary until it is available.
• release (() => void): Releases the mutex, allowing another waiting task to proceed.

Examples

const mutex = new Mutex();

async function criticalSection() {
  await mutex.acquire();
  try {
    // This code section cannot be executed simultaneously
  } finally {
    mutex.release();
  }
}

criticalSection();
criticalSection(); // This call will wait until the first call releases the mutex.