geeksunny/node-sleep

Add sleep() and usleep() to nodejs

sleep

Add sleep(), msleep() and usleep() to Node.js, via a C++ binding.

This is mainly useful for debugging.

These calls will block execution of all JavaScript by halting Node.js' event loop!

Alternative

When using nodejs 9.3 or higher it's better to use Atomics.wait which doesn't require compiling this C++ module. The sleep and msleep functions can be implemented like this:

function msleep(n) {
  Atomics.wait(new Int32Array(new SharedArrayBuffer(4)), 0, 0, n);
}
function sleep(n) {
  msleep(n*1000);
}

If you require usleep this module is still required.

Usage

var sleep = require('sleep');

• sleep.sleep(n): sleep for n seconds
• sleep.msleep(n): sleep for n miliseconds
• sleep.usleep(n): sleep for n microseconds (1 second is 1000000 microseconds)
• sleep.nsleep(n): sleep for n nanoseconds (1 second is 1E+09 nanoseconds; 1 millisecond is 1000000 nanoseconds)

License