Event Monitor
Event Monitor — Automatic C# Event Tracing Event Monitor is a Editor tool that automatically records what happens to your C# events at runtime.
by Pawel Ciesla
Price History +
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Event Monitor is officially tested on Unity 6 LTS (6000.3.7f1, 6000.4.2f1) and Unity 2022.3.62f3, and should work on other recent Unity versions.
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Automatically trace C# event subscriptions, unsubscriptions, and invocations — no attributes, no wrappers, no manual logging. Browse event timeline, inspect live subscribers, and time‑travel through your session.
Documentation: Click here!
KEY FEATURES
- Zero-setup automatic instrumentation (IL Post-Processor)
- Injects tracking into event add/remove accessors and common event invocation call sites after compilation.
- Append-only timeline (immutable records
- Every SUB / UNSUB / INVOKE becomes an immutable record you can filter and inspect.
- Optional payload capture (event arguments)
- Capture invocation arguments with a single toggle (📦 Payload).
- Payload-aware UI: INVOKE records are marked, payload is shown per-parameter, and zero-arg events are displayed as (no args).
- Optional payload object details (reflection inspector)
- Turn on📦 Details to inspect payload objects (public fields/properties) with safe limits (max items + depth + cycle detection).
- Live subscriber view
- See the current subscriber list per event (“OwnerType :: EventName → SubscriberType :: MethodName”).
- Time travel
- Scrub from a selected Log row to reconstruct subscriber state (SUB/UNSUB only) at that moment; the replayed graph is shown on the Subscribers tab. The log itself does not rewind.
- Stats
- Total records, total invocations, unique events, and “hottest” (most invoked) events.
- Export / copy
- Copy the log to clipboard as Plain Text, CSV, JSON, or Markdown.
- ILPP diagnostics (Console)
- Optional compile-time diagnostics emitted by the IL Post-Processor (enable/disable via ILPP Logs in the toolbar).
- One-click demo scene
- `Tools → Event Monitor → Generate Demo Scene` builds a Canvas with labeled buttons (event names on each control), a live HUD, extra sample listeners, and ReflectionScanner — ideal for seeing SUB/INVOKE in the log as you click.
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