'await()' without corresponding 'signal()'

Reports calls to Condition.await(), for which no call to a corresponding Condition.signal() or Condition.signalAll() can be found.

Calling Condition.await() in a thread without corresponding Condition.signal() may cause the thread to become disabled until it is interrupted or "spurious wakeup" occurs.

Only calls that target fields of the current class are reported by this inspection.

Example:

  class Queue {
    private final Condition isEmpty = ...;

    void add(Object elem) {
      // ...
      // isEmpty.signal();
      // ...
    }

    void remove(Object elem) throws InterruptedException {
      // ...
      isEmpty.await(); // 'await()' doesn't contain corresponding 'signal()'/'signalAll()' call
      // ...
    }
  }

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.

AwaitWithoutCorrespondingSignal

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

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.2, Qodana for JVM 2024.2,
Can be installed with plugin:	Java, 242.22892

Last modified: 11 September 2024