/*********************************************************************************/
/*
    sigwait和pthread_kill的使用
*/
/********************************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <pthread.h>

void * fun(void * arg)
{
    int *p = (int *)arg;
    printf("in pthread:%x %x\n", getpid(), pthread_self());
    
    pthread_kill(*p, SIGINT);
    return (void *)0;
}

int main()
{
    pthread_t tid;
    int err;
    sigset_t    st;
    int ptid;
    int num;
    
    sigfillset(&st);
    ptid = pthread_self();
    
    if ((err = pthread_create(&tid, NULL, fun, (void *)(&ptid))) != 0)
    {
        printf("pthread error!\n");
    }    

    if (sigwait(&st, &num) != 0)
    {
        printf("sigwait error!\n");
    }
    
    //只发了一个信号阿？怎么有等到两个？？？？
    printf("the num of signo  is %d \n", num);        
    
    //sleep(3);            
    
    printf("in main:%x %x\n", getpid(), pthread_self());
    printf("%d \n", pthread_equal(tid, pthread_self()));

    
    return 0;
}

运行结果：
[root@localhost niwen]# gcc 1.c -lpthread
[root@localhost niwen]# ./a.out
in pthread:35aa b7f50b90
the num of signo  is 2 
in main:35aa b7f516c0
0 
[root@localhost niwen]# 


只发了一个信号阿？怎么有等到两个？？？？