---
title: Common Mode Flag
framework: corefoundation
role: collectionGroup
role_heading: API Collection
path: corefoundation/common-mode-flag
---

# Common Mode Flag

A run loop pseudo-mode that manages objects monitored in the “common” modes.

## Overview

Overview Run loops never run in this mode. This pseudo-mode is used only as a special set of sources, timers, and observers that is shared by other modes. See Managing Observers for more details.

## Topics

### Constants

- [commonModes](corefoundation/cfrunloopmode/commonmodes.md)

## See Also

### Constants

- [CFRunLoopRunInMode Exit Codes](corefoundation/cfrunloopruninmode_exit_codes.md)
- [Default Run Loop Mode](corefoundation/default-run-loop-mode.md)