system execv... 拉起子进程,未处理信号导致主进程停止
作者:互联网
linux系统 system或者execv拉起进程时;因为与子进程信号交互未做 ,导致主进程停止;
修改:在初始化处添加代码:
static void signal_handler(int sig ) { } static void signal_u_handler(int sig ) { } static void crash_handler(int sig ) { } static void setup_signals() { struct sigaction sa; sa.sa_handler = signal_handler; sigemptyset(&sa.sa_mask); sa.sa_flags = SA_RESTART; signal(SIGTSTP,SIG_IGN); /* ignore tty signals */ signal(SIGTTOU,SIG_IGN); signal(SIGTTIN,SIG_IGN); //signal(SIGINT,SIG_IGN); signal(SIGXCPU,SIG_IGN); signal(SIGXFSZ,SIG_IGN); signal(SIGPIPE,SIG_IGN); /* ignore pipe broken signals */ sigaction(SIGHUP,&sa,NULL);/* catch hangup signal */ sigaction(SIGTERM,&sa,NULL);/* catch kill signal */ sa.sa_handler = signal_u_handler; sigemptyset(&sa.sa_mask); sa.sa_flags = SA_RESTART; sigaction(SIGUSR1,&sa,NULL); sigaction(SIGUSR2,&sa,NULL); sa.sa_handler = crash_handler; sigemptyset(&sa.sa_mask); sa.sa_flags = SA_RESTART; sigaction(SIGSEGV,&sa,NULL); sigaction(SIGILL,&sa,NULL); sigaction(SIGABRT,&sa,NULL); sigaction(SIGFPE,&sa,NULL); sigaction(SIGBUS,&sa,NULL); sigaction(SIGPROF,&sa,NULL); sigaction(SIGSYS,&sa,NULL); }
srs_error_t SrsVideoClipDvr::cycle() { srs_error_t err = srs_success; setup_signals(); while (!disposed) { ...... } }
标签:...,signal,system,handler,进程,IGN,sa,NULL,sigaction 来源: https://www.cnblogs.com/huyupei/p/15529593.html