JConsole is a monitoring tool that follows the JMX specification that allows you to get information about the execution of an application as the number of threads, memory use, or class loading. It is included with the JDK and it can be used to monitor local or remote applications. In this recipe, you will learn how to use this tool to monitor a simple concurrent application.
- Preface
- Thread Management
- Introduction
- Creating, running, and setting the characteristics of a thread
- Interrupting a thread
- Controlling the interruption of a thread
- Sleeping and resuming a thread
- Waiting for the finalization of a thread
- Creating and running a daemon thread
- Processing uncontrolled exceptions in a thread
- Using thread local variables
- Grouping threads and processing uncontrolled exceptions in a group of threads
- Creating threads through a factory
- Basic Thread Synchronization
- Thread Synchronization Utilities
- Introduction
- Controlling concurrent access to one or more copies of a resource
- Waiting for multiple concurrent events
- Synchronizing tasks in a common point
- Running concurrent-phased tasks
- Controlling phase change in concurrent-phased tasks
- Exchanging data between concurrent tasks
- Completing and linking tasks asynchronously
- Thread Executors
- Introduction
- Creating a thread executor and controlling its rejected tasks
- Executing tasks in an executor that returns a result
- Running multiple tasks and processing the first result
- Running multiple tasks and processing all the results
- Running a task in an executor after a delay
- Running a task in an executor periodically
- Canceling a task in an executor
- Controlling a task finishing in an executor
- Separating the launching of tasks and the processing of their results in an executor
- Fork/Join Framework
- Parallel and Reactive Streams
- Introduction
- Creating streams from different sources
- Reducing the elements of a stream
- Collecting the elements of a stream
- Applying an action to every element of a stream
- Filtering the elements of a stream
- Transforming the elements of a stream
- Sorting the elements of a stream
- Verifying conditions in the elements of a stream
- Reactive programming with reactive streams
- Concurrent Collections
- Introduction
- Using non-blocking thread-safe deques
- Using blocking thread-safe deques
- Using blocking thread-safe queue ordered by priority
- Using thread-safe lists with delayed elements
- Using thread-safe navigable maps
- Using thread-safe HashMaps
- Using atomic variables
- Using atomic arrays
- Using the volatile keyword
- Using variable handles
- Customizing Concurrency Classes
- Introduction
- Customizing the ThreadPoolExecutor class
- Implementing a priority-based Executor class
- Implementing the ThreadFactory interface to generate custom threads
- Using our ThreadFactory in an Executor object
- Customizing tasks running in a scheduled thread pool
- Implementing the ThreadFactory interface to generate custom threads for the fork/join framework
- Customizing tasks running in the fork/join framework
- Implementing a custom Lock class
- Implementing a transfer queue-based on priorities
- Implementing your own atomic object
- Implementing your own stream generator
- Implementing your own asynchronous stream
- Testing Concurrent Applications
- Introduction
- Monitoring a Lock interface
- Monitoring a Phaser class
- Monitoring an Executor framework
- Monitoring a fork/join pool
- Monitoring a stream
- Writing effective log messages
- Analyzing concurrent code with FindBugs
- Configuring Eclipse for debugging concurrency code
- Configuring NetBeans for debugging concurrency code
- Testing concurrency code with MultithreadedTC
- Monitoring with JConsole
- Additional Information
- Introduction
- Processing results for Runnable objects in the Executor framework
- Processing uncontrolled exceptions in a ForkJoinPool class
- Using a blocking thread-safe queue for communicating with producers and consumers
- Monitoring a Thread class
- Monitoring a Semaphore class
- Generating concurrent random numbers
- Concurrent Programming Design
- Introduction
- Using immutable objects when possible
- Avoiding deadlocks by ordering locks
- Using atomic variables instead of synchronization
- Holding locks for as short time as possible
- Delegating the management of threads to executors
- Using concurrent data structures instead of programming yourself
- Taking precautions using lazy initialization
- Using the fork/join framework instead of executors
- Avoiding the use of blocking operations inside a lock
- Avoiding the use of deprecated methods
- Using executors instead of thread groups
- Using streams to process big data sets
- Other tips and tricks
Monitoring with JConsole
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