sigwait和pthread_kill的使用.只发了一个信号阿？怎么有等到两个？？？？
/*********************************************************************************//* 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.outin pthread:35aa b7f50b90the num of signo is 2 in main:35aa b7f516c00 [root@localhost niwen]# 只发了一个信号阿？怎么有等到两个？？？？