RTEMS 4.10.99.0 On-Line Library

Table of Contents

List of Figures
Preface
1. Overview
- 1.1 Introduction
- 1.2 Real-time Application Systems
- 1.3 Real-time Executive
- 1.4 RTEMS Application Architecture
- 1.5 RTEMS Internal Architecture
- 1.6 User Customization and Extensibility
- 1.7 Portability
- 1.8 Memory Requirements
- 1.9 Audience
- 1.10 Conventions
- 1.11 Manual Organization
2. Key Concepts
- 2.1 Introduction
- 2.2 Objects
- 2.3 Communication and Synchronization
- 2.4 Time
- 2.5 Memory Management
3. RTEMS Data Types
- 3.1 Introduction
- 3.2 List of Data Types
4. Initialization Manager
- 4.1 Introduction
- 4.2 Background
- 4.3 Operations
  - 4.3.1 Initializing RTEMS
  - 4.3.2 Shutting Down RTEMS
- 4.4 Directives
5. Task Manager
- 5.1 Introduction
- 5.2 Background
- 5.3 Operations
- 5.4 Directives
6. Interrupt Manager
- 6.1 Introduction
- 6.2 Background
- 6.3 Operations
  - 6.3.1 Establishing an ISR
  - 6.3.2 Directives Allowed from an ISR
- 6.4 Directives
7. Clock Manager
- 7.1 Introduction
- 7.2 Background
- 7.3 Operations
- 7.4 Directives
8. Timer Manager
- 8.1 Introduction
- 8.2 Background
- 8.3 Operations
- 8.4 Directives
9. Semaphore Manager
- 9.1 Introduction
- 9.2 Background
- 9.3 Operations
- 9.4 Directives
10. Message Manager
- 10.1 Introduction
- 10.2 Background
- 10.3 Operations
- 10.4 Directives
11. Event Manager
- 11.1 Introduction
- 11.2 Background
- 11.3 Operations
- 11.4 Directives
  - 11.4.1 EVENT_SEND - Send event set to a task
  - 11.4.2 EVENT_RECEIVE - Receive event condition
12. Signal Manager
- 12.1 Introduction
- 12.2 Background
- 12.3 Operations
- 12.4 Directives
  - 12.4.1 SIGNAL_CATCH - Establish an ASR
  - 12.4.2 SIGNAL_SEND - Send signal set to a task
13. Partition Manager
- 13.1 Introduction
- 13.2 Background
  - 13.2.1 Partition Manager Definitions
  - 13.2.2 Building a Partition Attribute Set
- 13.3 Operations
- 13.4 Directives
14. Region Manager
- 14.1 Introduction
- 14.2 Background
- 14.3 Operations
- 14.4 Directives
15. Dual-Ported Memory Manager
- 15.1 Introduction
- 15.2 Background
- 15.3 Operations
- 15.4 Directives
16. I/O Manager
- 16.1 Introduction
- 16.2 Background
- 16.3 Operations
  - 16.3.1 Register and Lookup Name
  - 16.3.2 Accessing an Device Driver
- 16.4 Directives
17. Fatal Error Manager
- 17.1 Introduction
- 17.2 Background
- 17.3 Operations
  - 17.3.1 Announcing a Fatal Error
- 17.4 Directives
18. Scheduling Concepts
- 18.1 Introduction
- 18.2 Scheduling Algorithms
- 18.3 Scheduling Modification Mechanisms
- 18.4 Dispatching Tasks
- 18.5 Task State Transitions
19. Rate Monotonic Manager
- 19.1 Introduction
- 19.2 Background
- 19.3 Operations
- 19.4 Directives
20. Barrier Manager
- 20.1 Introduction
- 20.2 Background
  - 20.2.1 Automatic Versus Manual Barriers
  - 20.2.2 Building a Barrier Attribute Set
- 20.3 Operations
- 20.4 Directives
21. Board Support Packages
- 21.1 Introduction
- 21.2 Reset and Initialization
- 21.3 Device Drivers
  - 21.3.1 Clock Tick Device Driver
- 21.4 User Extensions
- 21.5 Multiprocessor Communications Interface (MPCI)
22. User Extensions Manager
- 22.1 Introduction
- 22.2 Background
- 22.3 Operations
- 22.4 Directives
23. Configuring a System
- 23.1 Introduction
- 23.2 Default Value Selection Philosophy
- 23.3 Sizing the RTEMS Workspace
- 23.4 Potential Issues with RTEMS Workspace Size Estimation
- 23.5 Configuration Example
  - 23.5.1 Unlimited Objects
  - 23.5.2 Per Object Class Unlimited Object Instances
  - 23.5.3 Unlimited Object Instances
  - 23.5.4 Enable Unlimited Object Instances
  - 23.5.5 Specify Unlimited Objects Allocation Size
- 23.6 Classic API Configuration
  - 23.6.1 Specify Maximum Classic API Tasks
  - 23.6.2 Disable Classic API Notepads
  - 23.6.3 Specify Maximum Classic API Timers
  - 23.6.4 Specify Maximum Classic API Semaphores
  - 23.6.5 Specify Maximum Classic API Message Queues
  - 23.6.6 Specify Maximum Classic API Barriers
  - 23.6.7 Specify Maximum Classic API Periods
  - 23.6.8 Specify Maximum Classic API Partitions
  - 23.6.9 Specify Maximum Classic API Regions
  - 23.6.10 Specify Maximum Classic API Ports
  - 23.6.11 Specify Maximum Classic API User Extensions
- 23.7 Classic API Initialization Tasks Table Configuration
  - 23.7.1 Instantiate Classic API Initialization Task Table
  - 23.7.2 Specifying Classic API Initialization Task Entry Point
  - 23.7.3 Specifying Classic API Initialization Task Name
  - 23.7.4 Specifying Classic API Initialization Task Stack Size
  - 23.7.5 Specifying Classic API Initialization Task Priority
  - 23.7.6 Specifying Classic API Initialization Task Attributes
  - 23.7.7 Specifying Classic API Initialization Task Modes
  - 23.7.8 Specifying Classic API Initialization Task Arguments
  - 23.7.9 Not Using Generated Initialization Tasks Table
- 23.8 POSIX API Configuration
  - 23.8.1 Specify Maximum POSIX API Threads
  - 23.8.2 Specify Maximum POSIX API Mutexes
  - 23.8.3 Specify Maximum POSIX API Condition Variables
  - 23.8.4 Specify Maximum POSIX API Keys
  - 23.8.5 Specify Maximum POSIX API Timers
  - 23.8.6 Specify Maximum POSIX API Queued Signals
  - 23.8.7 Specify Maximum POSIX API Message Queues
  - 23.8.8 Specify Maximum POSIX API Message Queue Descriptors
  - 23.8.9 Specify Maximum POSIX API Semaphores
  - 23.8.10 Specify Maximum POSIX API Barriers
  - 23.8.11 Specify Maximum POSIX API Spinlocks
  - 23.8.12 Specify Maximum POSIX API Read/Write Locks
- 23.9 POSIX Initialization Threads Table Configuration
  - 23.9.1 Instantiate POSIX API Initialization Thread Table
  - 23.9.2 Specifying POSIX API Initialization Thread Entry Point
  - 23.9.3 Specifying POSIX API Initialization Thread Stack Size
  - 23.9.4 Not Using Generated POSIX Initialization Threads Table
- 23.10 Basic System Information
  - 23.10.1 Separate or Unified Work Areas
  - 23.10.2 Length of Each Clock Tick
  - 23.10.3 Specifying Timeslicing Quantum
  - 23.10.4 Specifying the Number of Thread Priority Levels
  - 23.10.5 Specifying the Minimum Task Size
  - 23.10.6 Configuring the Size of the Interrupt Stack
  - 23.10.7 Reserve Task/Thread Stack Memory Above Minimum
  - 23.10.8 Automatically Zeroing the RTEMS Workspace and C Program Heap
  - 23.10.9 Enable The Task Stack Usage Checker
  - 23.10.10 Specify Application Specific User Extensions
- 23.11 Configuring Custom Task Stack Allocation
  - 23.11.1 Custom Task Stack Allocator Initialization
  - 23.11.2 Custom Task Stack Allocator
  - 23.11.3 Custom Task Stack Deallocator
- 23.12 Configuring Memory for Classic API Message Buffers
  - 23.12.1 Calculate Memory for a Single Classic Message API Message Queue
  - 23.12.2 Reserve Memory for All Classic Message API Message Queues
- 23.13 Seldom Used Configuration Parameters
  - 23.13.1 Specify Memory Overhead
  - 23.13.2 Do Not Generate Configuration Information
- 23.14 C Library Support Configuration
  - 23.14.1 Enable Malloc Family Statistics
  - 23.14.2 Specify Maximum Number of File Descriptors
  - 23.14.3 Disable POSIX Termios Support
  - 23.14.4 Specify Maximum Termios Ports
- 23.15 File System Configuration Parameters
  - 23.15.1 Providing Application Specific Mount Table
  - 23.15.2 Configure miniIMFS as Root File System
  - 23.15.3 Configure devFS as Root File System
  - 23.15.4 Disable File System Support
- 23.16 Block Device Cache Configuration
  - 23.16.1 Enable Block Device Cache
  - 23.16.2 Size of the Cache Memory
  - 23.16.3 Minimum Size of a Buffer
  - 23.16.4 Maximum Size of a Buffer
  - 23.16.5 Swapout Task Swap Period
  - 23.16.6 Swapout Task Maximum Block Hold Time
  - 23.16.7 Swapout Task Priority
  - 23.16.8 Maximum Blocks per Read-Ahead Request
  - 23.16.9 Maximum Blocks per Write Request
  - 23.16.10 Task Stack Size of the Block Device Cache Tasks
  - 23.16.11 Read-Ahead Task Priority
  - 23.16.12 Swapout Worker Task Count
  - 23.16.13 Swapout Worker Task Priority
- 23.17 BSP Specific Settings
  - 23.17.1 Disable BSP Configuration Settings
  - 23.17.2 Specify BSP Supports sbrk()
  - 23.17.3 Specify BSP Specific Idle Task
  - 23.17.4 Specify BSP Suggested Value for IDLE Task Stack Size
  - 23.17.5 Specify BSP Specific User Extensions
  - 23.17.6 Specifying BSP Specific Interrupt Stack Size
  - 23.17.7 Specifying BSP Specific Maximum Devices
  - 23.17.8 BSP Recommends RTEMS Workspace be Cleared
  - 23.17.9 Specify BSP Prerequisite Drivers
- 23.18 Idle Task Configuration
  - 23.18.1 Specify Application Specific Idle Task Body
  - 23.18.2 Specify Idle Task Stack Size
  - 23.18.3 Specify Idle Task Performs Application Initialization
- 23.19 Scheduler Algorithm Configuration
  - 23.19.1 Use Deterministic Priority Scheduler
  - 23.19.2 Use Simple Priority Scheduler
  - 23.19.3 Use Earliest Deadline First Scheduler
  - 23.19.4 Use Constant Bandwidth Server Scheduler
  - 23.19.5 Use Simple SMP Priority Scheduler
  - 23.19.6 Configuring a User Provided Scheduler
- 23.20 SMP Specific Configuration Parameters
  - 23.20.1 Specify Application Uses Multiple Cores (is SMP)
  - 23.20.2 Specify Maximum Processors in SMP System
- 23.21 Device Driver Table
  - 23.21.1 Specifying Application Defined Device Driver Table
  - 23.21.2 Specifying the Maximum Number of Device Drivers
  - 23.21.3 Specifying Maximum Devices
  - 23.21.4 Enable Console Device Driver
  - 23.21.5 Enable Clock Driver
  - 23.21.6 Enable the Benchmark Timer Driver
  - 23.21.7 Specify Clock and Benchmark Timer Drivers Are Not Needed
  - 23.21.8 Enable Real-Time Clock Driver
  - 23.21.9 Enable the Watchdog Device Driver
  - 23.21.10 Enable the Graphics Frame Buffer Device Driver
  - 23.21.11 Enable Stub Device Driver
  - 23.21.12 Specify Application Prerequisite Device Drivers
  - 23.21.13 Specify Extra Application Device Drivers
  - 23.21.14 Enable /dev/null Device Driver
  - 23.21.15 Enable /dev/zero Device Driver
- 23.22 Multiprocessing Configuration
  - 23.22.1 Specify Application Will Use Multiprocessing
  - 23.22.2 Configure Node Number in Multiprocessor Configuration
  - 23.22.3 Configure Maximum Node in Multiprocessor Configuration
  - 23.22.4 Configure Maximum Global Objects in Multiprocessor Configuration
  - 23.22.5 Configure Maximum Proxies in Multiprocessor Configuration
  - 23.22.6 Configure MPCI in Multiprocessor Configuration
  - 23.22.7 Do Not Generate Multiprocessor Configuration Table
- 23.23 Ada Tasks
  - 23.23.1 Specify Application Includes Ada Code
  - 23.23.2 Specify the Maximum Number of Ada Tasks.
  - 23.23.3 Specify the Maximum Fake Ada Tasks
- 23.24 Configuration Data Structures
24. Multiprocessing Manager
- 24.1 Introduction
- 24.2 Background
- 24.3 Multiprocessor Communications Interface Layer
- 24.4 Operations
  - 24.4.1 Announcing a Packet
- 24.5 Directives
  - 24.5.1 MULTIPROCESSING_ANNOUNCE - Announce the arrival of a packet
25. Stack Bounds Checker
- 25.1 Introduction
- 25.2 Background
  - 25.2.1 Task Stack
  - 25.2.2 Execution
- 25.3 Operations
- 25.4 Routines
  - 25.4.1 STACK_CHECKER_IS_BLOWN - Has Current Task Blown Its Stack
  - 25.4.2 STACK_CHECKER_REPORT_USAGE - Report Task Stack Usage
26. CPU Usage Statistics
- 26.1 Introduction
- 26.2 Background
- 26.3 Operations
  - 26.3.1 Report CPU Usage Statistics
  - 26.3.2 Reset CPU Usage Statistics
- 26.4 Directives
  - 26.4.1 cpu_usage_report - Report CPU Usage Statistics
  - 26.4.2 cpu_usage_reset - Reset CPU Usage Statistics
27. Object Services
- 27.1 Introduction
- 27.2 Background
- 27.3 Operations
  - 27.3.1 Decomposing and Recomposing an Object Id
  - 27.3.2 Printing an Object Id
- 27.4 Directives
28. Chains
- 28.1 Introduction
- 28.2 Background
  - 28.2.1 Nodes
  - 28.2.2 Controls
- 28.3 Operations
- 28.4 Directives
29. Timespec Helpers
- 29.1 Introduction
- 29.2 Background
  - 29.2.1 Time Storage Conventions
- 29.3 Operations
- 29.4 Directives
30. Constant Bandwidth Server Scheduler API
- 30.1 Introduction
- 30.2 Background
- 30.3 Operations
- 30.4 Directives
31. Directive Status Codes
32. Example Application
33. Glossary
Command and Variable Index
Concept Index

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