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AIX Version 4.3 Kernel and Subsystems Technical Reference, Volume 1

e_block_thread Kernel Service

Purpose

Blocks the calling kernel thread.

Syntax

#include <sys/sleep.h>
int e_block_thread ()

Description

The e_block_thread kernel service blocks the calling kernel thread. The thread must have issued a request to sleep (by calling the e_assert_wait kernel service). If it has been removed from its event list, it remains runnable.

Execution Environment

The e_block_thread kernel service can be called from the process environment only.

Return Values

The e_block_thread kernel service return a value that indicate how the thread was awakened. The following values are defined:

THREAD_AWAKENED Denotes a normal wakeup; the event occurred.
THREAD_INTERRUPTED Denotes an interruption by a signal.
THREAD_TIMED_OUT Denotes a timeout expiration.
THREAD_OTHER Delineates the predefined system codes from those that need to be defined at the subsystem level. Subsystem should define their own values greater than or equal to this value.

Implementation Specifics

The e_block_thread kernel service is part of the Base Operating System (BOS) Runtime.

Related Information

The e_assert_wait kernel service.

Process and Exception Management Kernel Services in AIX Kernel Extensions and Device Support Programming Concepts.

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