pthread_cleanup_pop.txt

Pthread lib库完整说明文档

pthread_cleanup_pop Subroutine



Purpose

Removes, and optionally executes, the routine at the top of the calling
thread's cleanup stack.

Library

Threads Library (libpthreads.a)

Syntax

#include <pthread.h>

void pthread_cleanup_pop (execute)
int execute;

Description

The pthread_cleanup_pop subroutine removes the routine at the top
of the calling thread's cleanup stack. If the execute parameter is
non-zero, the routine is executed.

The cleanup stack is a LIFO (last in first out) stack, used for performing
all cleanups necessary for safe thread termination.

The pthread_cleanup_pop subroutine must be in the same function and
in the same block of statements than the corresponding call to the
pthread_cleanup_push subroutine. Otherwise, the compiler may fail
compiling the program, or the program would have an unpredictable
behaviour when porting to other systems. The reason is that, on non-AIX
systems, the pthread_cleanup_pop subroutine may be implemented as
a macro closing a block of statements.

Note:	The pthread.h header file must be the first included file of
each source file using the threads library.

Parameters

execute	Specifies if the popped routine will be executed.

Implementation Specifics

This subroutine is part of the Base Operating System (BOS) Runtime.

Related Information

The pthread_cleanup_push subroutine, pthread_exit subroutine.

Terminating Threads.

Threads Library Quick Reference.