This post discusses deadlock in multi-threaded applications, specifically in Kotlin. It defines deadlock and provides a practical example using trains on a single track. A sample Kotlin program illustrates how deadlock occurs between two threads. Troubleshooting deadlock involves capturing thread dumps and analyzing them with tools like yCrash for clearer insight.
Deadlock occurs when two or more threads wait indefinitely for each other to release locks, preventing further progress. A Java Virtual Machine (JVM) experiencing deadlock must be restarted for recovery. The provided code illustrates a classic deadlock scenario with two threads competing for two locks, resulting in a blocked state.