Alibaba Terminal Technology

Oct 11, 2021 · Mobile Development

How Android Handles ANR SIGQUIT: Signal Interception Explained

This article explains how Android captures ANR events by intercepting the SIGQUIT signal, covering the relevant signal‑handling functions (kill, signal, sigaction, sigwait, pthread_sigmask), their differences, the SignalCatcher thread implementation, and how developers can create custom SIGQUIT monitors for ANR analysis.