HP OpenVMS systems documentation

Contents

Preface
Preface	Preface
Chapter 1
1	Overview of Manuals and Introduction to Development on OpenVMS Systems
1.1	Overview of the Manual
1.2	Overview of the OpenVMS Operating System
1.3	Components of the OpenVMS Operating System
1.3.1	OpenVMS Systems on Multiple Platforms
1.3.1.1	System Compatibility and Program Portability Across Platforms
1.3.2	OpenVMS Computing Environments
1.3.2.1	Open System Capabilities
1.3.2.2	Application Portability
1.3.2.2.1	Other Application Portability Features
1.3.3	Distributed Computing Capabilities
1.3.3.1	Client/Server Style of Computing
1.3.3.2	OpenVMS Client/Server Capabilities
1.4	The OpenVMS Programming Environment
1.4.1	Programming to Standards
1.4.1.1	Common Environment for Writing Code
1.4.1.2	Common Language Environment
1.5	OpenVMS Programming Software
1.5.1	Creating Program Source Files
1.5.2	Creating Object Files
1.5.3	Creating Runnable Programs
1.5.4	Testing and Debugging Programs
1.5.4.1	Special Modes of Operation for Debugging
1.5.5	Using Other Program Development Utilities
1.5.6	Managing Software Development Tasks
1.6	Using Callable System Routines
1.6.1	Using the POSIX Threads Library Routines
1.6.2	Using OpenVMS Run-Time Library Routines
1.6.3	Using OpenVMS System Services
1.6.4	Using OpenVMS Utility Routines
1.7	Programming User Interfaces
1.8	Optional HP Software Development Tools
1.9	Managing Data
1.9.1	RMS Files and Records
1.9.2	RMS Utilities
Part 1
Part 1	Process and Synchronization
Chapter 2
2	Process Creation
2.1	Process Types
2.2	Execution Context of a Process
2.3	Modes of Execution of a Process
2.4	Creating a Subprocess
2.4.1	Naming a Spawned Subprocess
2.4.2	Using LIB$SPAWN to Create a Spawned Subprocess
2.4.3	Using the C system() Call
2.4.4	Using SYS$CREPRC to Create a Subprocess
2.4.4.1	Disk and Directory Defaults for Created Processes
2.5	Creating a Detached Process
2.6	Process Quota Lists
2.7	Debugging a Subprocess or a Detached Process
2.8	Kernel Threads and the Kernel Threads Process Structure (Alpha and I64 Only)
2.8.1	Definition and Advantages of Kernel Threads
2.8.2	Kernel Threads Features
2.8.2.1	Multiple Execution Contexts Within a Process
2.8.2.2	Efficient Use of the OpenVMS and POSIX Threads Library Schedulers
2.8.2.3	Terminating a POSIX Threads Image
2.8.3	Kernel Threads Model and Design Features
2.8.3.1	Kernel Threads Model
2.8.3.2	Kernel Threads Design Features
2.8.3.2.1	Process Structure
2.8.3.2.2	Access to Inner Modes
2.8.3.2.3	Scheduling
2.8.3.2.4	ASTs
2.8.3.2.5	Event Flags
2.8.3.2.6	Process Control Services
2.8.4	Kernel Threads Process Structure
2.8.4.1	Process Control Block (PCB) and Process Header (PHD)
2.8.4.1.1	Effect of a Multithreaded Process on the PCB and PHD
2.8.4.2	Kernel Thread Block (KTB)
2.8.4.3	Floating-Point Registers and Execution Data Blocks (FREDs)
2.8.4.4	Kernel Threads Region
2.8.4.5	Per-Kernel Thread Stacks
2.8.4.6	Per-Kernel-Thread Data Cells
2.8.4.7	Summary of Process Data Structures
2.8.4.8	Kernel Thread Priorities
2.9	THREADCP Command Not Supported on OpenVMS I64
2.10	KPS Services (Alpha and I64 only)
Chapter 3
3	Process Communication
3.1	Communication Within a Process
3.1.1	Using Local Event Flags
3.1.2	Using Logical Names
3.1.2.1	Creating and Accessing Logical Names
3.1.3	Using Command Language Interpreter Symbols
3.1.3.1	Local and Global Symbols
3.1.3.2	Creating and Using Global Symbols
3.1.4	Using the Common Area
3.1.4.1	Creating the Process Common Area
3.1.4.2	Common I/O Routines
3.1.4.3	Modifying or Deleting Data in the Common Block
3.1.4.4	Specifying Other Types of Data
3.2	Communication Between Processes
3.2.1	Using Logical Name Tables
3.2.2	Mailboxes
3.2.2.1	Creating a Mailbox
3.2.2.2	Creating Temporary and Permanent Mailboxes
3.2.2.3	Assigning an I/O Channel Along with a Mailbox
3.2.2.4	Reading and Writing Data to a Mailbox
3.2.2.5	Using Synchronous Mailbox I/O
3.2.2.6	Using Immediate Mailbox I/O
3.2.2.7	Using Asynchronous Mailbox I/O
3.3	Intracluster Communication
3.3.1	Programming with Intracluster Communications
3.3.1.1	ICC Concepts
3.3.1.2	Design Considerations
3.3.1.2.1	Naming
3.3.1.2.2	Message Ordering
3.3.1.2.3	Flow Control
3.3.1.2.4	Transfer Sizes and Receiving Data
3.3.1.2.5	Transfer Sizes and Transceive
3.3.1.2.6	Disconnection
3.3.1.2.7	Error Recovery
3.3.1.3	General Programming Considerations
3.3.1.4	Servers
3.3.1.4.1	Connection Events
3.3.1.4.2	Disconnection Events
3.3.1.5	Clients