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#include <pthread.h>
void pthread_cleanup_push(void (*rtn)(void *),void *arg);
    º¯ÊýrtnÊÇÇåÀíº¯Êý£¬argÊǵ÷ÓòÎÊý
void pthread_cleanup_pop(int execute);
 
 
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    pthread_cleanup_push()/pthread_cleanup_pop²ÉÓÃÏÈÈëºó³öµÄ·½Ê½µÄÕ»µÄ¹ÜÀí·½Ê½£¬void *rtn(void *),ÔÚÖ´ÐÐpthread_cleanup_push()ʱѹÈ뺯ÊýÕ»£¬¶à´ÎÖ´ÐÐpthread_cleanup_push()ÐγÉÒ»¸öº¯ÊýÁ´£¬ÔÚÖ´ÐÐÕâ¸öº¯ÊýÁ´µÄʱºò»áÒÔ·´·½Ïòµ¯³ö£¬¼´ÏÈÈëºó³ö¡£execute²ÎÊý±íʶ£¬ÊÇ·ñÖ´Ðе¯³öÇåÀíº¯Êý£¬µ±execute=0ʱ²»½øÐе¯³öÇåÀíº¯Êý£¬·ÇÁãµÄʱºòµ¯³ö´¦Àíº¯Êý¡£
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    ³ÌÐòÃû³Æ£ºpthread_clean.c
 /********************************************************************************************
**    Name:pthread_clean.c
**    Used to study the multithread programming in Linux OS
**    A example showing a thread to be cleaned.
**    Author:zeickey
**    Date:2008/6/28       
**    Copyright (c) 2006,All Rights Reserved!
*********************************************************************************************/
#include <stdio.h>
#include <pthread.h>
#include <unistd.h>
void *clean(void *arg)
{
    printf("cleanup :%s  \n",(char *)arg);
    return (void *)0;
}
void *thr_fn1(void *arg)
{
    printf("thread 1 start  \n");
    pthread_cleanup_push( (void*)clean,"thread 1 first handler");
    pthread_cleanup_push( (void*)clean,"thread


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