linux网络编程二十八：多线程编程之统一信号处理

来源：互联网发布：比较好的经济类数据库编辑：程序博客网时间：2024/06/05 19:32

1. 以下代码取自pthread_sigmask函数的man手册。它实现了在一个线程中统一处理信号。

#include <pthread.h>#include <stdio.h>#include <stdlib.h>#include <unistd.h>#include <signal.h>#include <errno.h>#define handler_error_en(en, msg) \    do { errno = en; perror(msg); exit(EXIT_FAILURE); } while (0)static void* sig_thread(void *arg){    sigset_t *set = (sigset_t*)arg;    int s, sig;    for (;;) {        //等待信号        s = sigwait(set, &sig);        if (s != 0)            handler_error_en(s, "sigwait");        printf("Signal handling thread got signal %d\n", sig);    }}int main(int argc, char *argv[]){    pthread_t thread;    sigset_t set;    int s;    //在主线程中设置信号掩码    sigemptyset(&set);    sigaddset(&set, SIGQUIT);    sigaddset(&set, SIGUSR1);    s = pthread_sigmask(SIG_BLOCK, &set, NULL);    if (s != 0)        handler_error_en(s, "pthread_sigmask");    s = pthread_create(&thread, NULL, &sig_thread, (void*)&set);    if (s != 0)        handler_error_en(s, "pthread_create");    pause();    return 0;}

0 0