OSF DCE Application Development Guide--Core Components

Chapter 7. Thread Concepts and Operations

This chapter discusses concepts and techniques related to DCE Threads. The following

topics are covered:

• Thread operations

• New primitives

• Attributes objects

• Synchronization objects

• One-time initialization code

• Thread-speciﬁc data

• Thread cancellation

• Thread scheduling

For detailed information on the multithreading routines referred to in this chapter, see the

reference page for that routine in the OSF DCE Application Development Reference.

7.1 Thread Operations

A thread changes states as it runs, waits to synchronize, or is ready to be run. A thread is

in one of the following states:

• Waiting

The thread is not eligible to execute because it is synchronizing with another thread

or with an external event.

• Ready

The thread is eligible to be executed by a processor.

• Running

The thread is currently being executed by a processor.

124245 Tandem Computers Incorporated 7−1