Method readStdin

src/ringbuffer.js:317–331

* Read stdin data (returns null if none available)

()

     * Read stdin data (returns null if none available)
     */
    readStdin() {
        if (Atomics.load(this.int32, STDIN_FLAG_INDEX) === 0) {
            return null;
        }
        
        const size = Atomics.load(this.int32, STDIN_SIZE_INDEX);
        const data = this.uint8.slice(STDIN_OFFSET, STDIN_OFFSET + size);
        
        // Clear flag and notify writer
        Atomics.store(this.int32, STDIN_SIZE_INDEX, 0);
        Atomics.store(this.int32, STDIN_FLAG_INDEX, 0);
        Atomics.notify(this.int32, STDIN_FLAG_INDEX);
        
        return data;
    }
    
    /**
     * Read next network message (returns null if none available)