Inspectopedia 2024.3 Help

Cancellation check in loops

Reports loops, forEach-like methods, and ContainerUtil.process() with missing cancellation checks.

Runs only within the methods with com.intellij.util.concurrency.annotations.RequiresReadLock annotation.

Example:

@RequiresReadLock fun doSomething() { ... for (item in items) { ProgressManager.checkCanceled() // should be present in the first line ... } items.forEach { ProgressManager.checkCanceled() // should be present in the first line ... } ... }

In the case of nested loops with nothing in between:

@RequiresReadLock fun doSomething() { ... for (item in items) { // nothing in between for (inner in item.inners) { ProgressManager.checkCanceled() // should be present in the first line of the inner loop only ... } } ... }

In blocking context com.intellij.openapi.progress.ProgressManager.checkCanceled() should be used, while com.intellij.openapi.progress.CoroutinesKt.checkCancelled() should be used in suspending one.

See Background Processes Cancellation in IntelliJ Platform Plugin SDK docs for more details.

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.

CancellationCheckInLoops
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 | Plugin DevKit | Code

New in 2023.1

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Plugin DevKit, 243.23126

Last modified: 03 December 2024