Call to 'Thread.sleep()' while synchronized

Reports calls to java.lang.Thread.sleep() methods that occur within a synchronized block or method.

sleep() within a synchronized block may result in decreased performance, poor scalability, and possibly even deadlocking. Consider using wait() instead, as it will release the lock held.

Example:

  synchronized (lock) {
    Thread.sleep(100);
  }

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

SleepWhileHoldingLock

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Java | Threading issues

Availability

By default bundled with: IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,
Can be installed with plugin: Java, 241.18072

Last modified: 18 June 2024