Libuv 6-Phase Event Loop Lab
Interactive evaluation of Timers, Pending Callbacks, Poll, and Check phases with VIP microtask draining.
Libuv Asynchronous Runtime
The 6-Phase Libuv Event Loop & Microtask Interleaving
VIP Microtask Checkpoint: process.nextTick & Promise.then queues drain between every single phase!
Active Phase Inspection:
1. Timers Phase
setTimeout() & setInterval()
Executes expired timer threshold callbacks. Threshold represents the minimum delay, not exact guarantee.
Representative Handles Processed:
setTimeout(cb, 100) • setInterval(tick, 1000)