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Plugin Classes to Check in HPROF Analysis

This document lists all plugin classes to search for when analyzing heap dumps to identify memory leaks after plugin unload. All classes should have count = 0 after successful plugin unload.

Classes are organized by module: backend, frontend, and shared.

Backend Module

Services

Expected: 1 instance per project, or 0 after unload

  • service.ViewService
  • service.ToolWindowService
  • service.ToolWindowServiceInterface (interface)
  • service.StatusBarService
  • service.GitService
  • service.TargetBranchService
  • implementation.compare.ChangesService

State/Persistence

  • state.State
  • state.MyModelConverter
  • state.WindowPositionTracker

Listeners

Expected: 0 after unload

  • listener.MyBulkFileListener
  • listener.MyDynamicPluginListener
  • listener.MyToolWindowListener
  • listener.VcsStartup
  • listener.MyChangeListListener
  • listener.MyGitRepositoryChangeListener
  • listener.MyFileEditorManagerListener
  • listener.MyTabContentListener
  • listener.MyTreeSelectionListener
  • listener.ToggleHeadAction
  • listener.VcsContextMenuAction

UI Components

Main Components

  • toolwindow.ToolWindowView
  • toolwindow.ToolWindowUIFactory
  • toolwindow.BranchSelectView
  • toolwindow.TabOperations
  • toolwindow.VcsTreeActions

Actions

  • toolwindow.actions.TabMoveActions
  • toolwindow.actions.TabMoveActions$MoveTabLeft
  • toolwindow.actions.TabMoveActions$MoveTabRight
  • toolwindow.actions.RenameTabAction
  • toolwindow.actions.ResetTabNameAction

UI Elements

  • toolwindow.elements.VcsTree
  • toolwindow.elements.BranchTree
  • toolwindow.elements.BranchTreeEntry
  • toolwindow.elements.MySimpleChangesBrowser
  • toolwindow.elements.CurrentBranch
  • toolwindow.elements.TargetBranch

Status Bar

  • statusBar.MyStatusBarWidget
  • statusBar.MyStatusBarWidgetFactory
  • statusBar.MyStatusBarPanel

Models

  • model.MyModel
  • model.MyModel$field (enum)
  • model.MyModelBase
  • model.TargetBranchMap
  • model.Debounce

Implementation Classes

Line Status Tracker

  • implementation.lineStatusTracker.MyLineStatusTrackerImpl

Scope

  • implementation.scope.MyScope
  • implementation.scope.MyPackageSet (registered with NamedScopeManager - critical leak if not unregistered)
  • implementation.scope.MyScopeInTarget
  • implementation.scope.MyScopeNameSupplier

File Status

  • implementation.fileStatus.GitScopeFileStatusProvider

Settings (Backend UI)

  • settings.GitScopeSettingsComponent
  • settings.GitScopeSettingsConfigurable

RPC

  • rpc.BackendGutterRpcImpl
  • rpc.BackendGutterRpcProvider

Utility Classes

  • utils.CustomRollback
  • utils.GitUtil
  • utils.PlatformApiReflection

Frontend Module

Services

  • gitscope.frontend.GutterRenderingService
  • gitscope.frontend.GutterRenderingStartup

Gutter Rendering

  • implementation.gutter.LineStatusGutterMarkerRenderer
  • implementation.gutter.ScopeLineStatusMarkerRenderer
  • implementation.gutter.ScopeDiffViewer
  • implementation.gutter.ScopeGutterHighlighterManager
  • implementation.gutter.ScopeGutterPopupPanel

RPC

  • rpc.FrontendGutterSubscriptions
  • rpc.FrontendGutterSubscriptionsStartup

Shared Module

Services

  • service.GutterDataService
  • service.GutterDataService$GutterFileData
  • service.GutterDataService$Listener (interface)

Gutter Data Model

  • implementation.gutter.Range
  • implementation.gutter.RangesBuilder

RPC Interface & DTOs

  • rpc.GutterRpcApi
  • rpc.GutterUpdateEvent
  • rpc.GutterUpdateEvent$DataUpdated
  • rpc.GutterUpdateEvent$DataCleared
  • rpc.GutterUpdateEvent$AllCleared
  • rpc.GutterFileDataDto
  • rpc.GutterRangeDto

Settings

  • settings.GitScopeSettings

System

  • system.Defs

Utility Classes

  • utils.SharedReflection
  • utils.Notification

Anonymous/Inner Classes to Look For

These are patterns - search for classes matching these names:

  • ToolWindowView$listener (Consumer<MyModel.field> stored as field)
  • ViewService$modelListeners (HashMap of model → Consumer listeners)
  • MyLineStatusTrackerImpl$$Lambda (lambdas from line status tracker)
  • ScopeLineStatusMarkerRenderer$$Lambda (lambdas from gutter renderer)
  • GutterRenderingService$$Lambda (lambdas from rendering service)
  • BackendGutterRpcImpl$$Lambda (callbackFlow listener)
  • MySimpleChangesBrowser$1 (anonymous MouseAdapter)
  • BranchTree$MyColoredTreeCellRenderer
  • Any class ending with $$Lambda$...

How to Search Efficiently

1. Search by Package Prefix

Filter the HPROF classes view using these prefixes:

  • service.
  • listener.
  • toolwindow.
  • implementation.
  • model.
  • state.
  • statusBar.
  • settings.
  • utils.
  • rpc.
  • gitscope.frontend.
  • system.

2. Filter the Classes View

  1. Sort by "Count" column
  2. Look for count != 0
  3. Focus on YOUR packages (ignore com.intellij.*, java.*, kotlin.*)

3. Priority Classes to Check

Most likely to leak:

  1. All listeners - Must be unregistered
  2. ToolWindowView - UI components must be disposed, model listener removed
  3. ViewService - Model listeners must be removed in dispose()
  4. MyLineStatusTrackerImpl - Background tasks must be cancelled
  5. ScopeLineStatusMarkerRenderer - Highlighters and mouse listeners must be removed
  6. GutterRenderingService - Must remove itself from GutterDataService listeners
  7. BackendGutterRpcImpl - callbackFlow listener removed on awaitClose
  8. FrontendGutterSubscriptions - Coroutine scope cancelled on service dispose
  9. GutterDataService - Listener list and file data map cleared on dispose
  10. Any class with $ in the name - Anonymous/inner classes often capture outer references

Analysis Steps

  1. Open the .hprof file in IntelliJ's memory profiler
  2. Navigate to the "Classes" view
  3. Sort by "Count" column in descending order
  4. Search for each class using the package prefixes above
  5. Report back any classes with count != 0 and we'll fix them!