com.liferay.portal.kernel.backgroundtask
Interfaces 
BackgroundTask
BackgroundTaskExecutor
BackgroundTaskExecutorRegistry
BackgroundTaskManager
BackgroundTaskStatusMessageSender
BackgroundTaskStatusMessageTranslator
BackgroundTaskStatusRegistry
BackgroundTaskThreadLocalManager
Classes 
BackgroundTaskConstants
BackgroundTaskExecutorRegistryUtil
BackgroundTaskLockHelperUtil
BackgroundTaskManagerUtil
BackgroundTaskResult
BackgroundTaskStatus
BackgroundTaskStatusRegistryUtil
BackgroundTaskThreadLocal
BaseBackgroundTaskExecutor
ClassLoaderAwareBackgroundTaskExecutor
DelegatingBackgroundTaskExecutor
SerialBackgroundTaskExecutor
ThreadLocalAwareBackgroundTaskExecutor