From the course: React: Web Workers
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Mastering shared memory - React.js Tutorial
From the course: React: Web Workers
Mastering shared memory
- [Instructor] Let's talk about shared memory. Shared memory allows multiple web workers to access the same data buffer, which significantly reduces the overhead of message passing and improves performance. Imagine you have multiple workers that need to access and modify a large dataset. Instead of sending copies of the dataset between workers, you can share the same memory space. In this code, we create a shared array buffer and pass it to a worker, allowing both the main thread and the worker to access the same data simultaneously. Atomic operation. When multiple workers access shared memory, atomic operation is crucial for avoiding data races and ensuring data consistency. Atomic operation allows you to perform read modify write actions in a single uninterruptible step. Atomic operation in JavaScript can be performed using the Atomics object. Let's look at how to use this in practice. Here, Atomics.add increments the value at a specific index in the shared array safely, even if…
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