The Real-Time Specification for Java

Real-time programming is a critical component in the development of many consumer, industrial, and system devices. This book represents the first official specification for developing real-time applications with the Java™ platform. The Real-Time Specification for Java™ (RTSJ) is the definitive reference to the semantics, extensions, and modifications to the Java programming language that enable the Java platform to meet the requirements and constraints of real-time system predictability, performance, and capabilities. These world-renowned authors provide you with an authoritative resource for all of the APIs and Java virtual machine semantics required to implement the specification. The newly developed RTSJ enables the creation, verification, analysis, execution, and management of code written for the Java platform for which the correctness conditions, timeliness, and execution predictability are paramount. This specification provides programmers with the ability to model applications and program logic that require predictable execution which meets hard real-time constraints. The RTSJ APIs, methods, and classes are fully detailed and contain sample code that demonstrate the important concepts and techniques. Additionally, you will find coverage of such specific topics as:

• Scheduling
• Memory management
• Synchronization
• Asynchronous event handling
• Asynchronous transfer of control
• Asynchronous thread termination
• Physical memory access

As the most authoritative and comprehensive description of a new and important technology, this book is an essential resource for programmers who are developing implementations of the RTSJ and programming for real-time systems. You will also find this book useful if you are a real-time programmer interested in the Java platform.

Contents

1 Introduction

2 Design

3 Threads

• RealtimeThread
• NoHeapRealtimeThread

4 Scheduling

• Semantics and Requirements
• Schedulable
• Scheduler
• PriorityScheduler
• SchedulingParameters
• PriorityParameters
• ImportanceParameters
• ReleaseParameters
• PeriodicParameters
• AperiodicParameters
• SporadicParameters
• ProcessingGroupParameters

5 Memory Management

• Semantics and Requirements
• MemoryArea
• HeapMemory
• ImmortalMemory
• ScopedMemory
• VTMemory
• LTMemory
• PhysicalMemoryFactory
• ImmortalPhysicalMemory
• ScopedPhysicalMemory
• RawMemoryAccess
• RawMemoryFloatAccess
• MemoryParameters
• GarbageCollector
• IncrementalCollectorExample
• MarkAndSweepCollectorExample

6 Synchronization

• MonitorControl
• PriorityCeilingEmulation
• PriorityInheritance
• WaitFreeDequeue
• WaitFreeReadQueue
• WaitFreeWriteQueue

7 Time

• HighResolutionTime
• AbsoluteTime
• RelativeTime
• RationalTime

8 Timers

• Clock
• Timer
• OneShotTimer
• PeriodicTimer

9 Asynchrony

• AsyncEvent
• AsyncEventHandler
• BoundAsyncEventHandler
• Interruptible
• AsynchronouslyInterruptedException
• Timed

10 System and Options

• POSIXSignalHandler
• RealtimeSecurity
• RealtimeSystem

11 Exceptions

• IllegalAssignmentError
• MemoryAccessError
• MemoryScopeException
• OffsetOutOfBoundsException
• ResourceLimitError
• SizeOutOfBoundsException
• ThrowBoundaryError
• UnsupportedPhysicalMemoryException

Almanac

Bibliography

Colophon

Index