Linux 信号处理，是否同一个线程组的线程收到SIGSEGV其它线程都会被挂起

   为了回答以上问题，写了下面测试程序

#include <pthread.h>#include <iostream>#include <signal.h>#include <stdio.h>#include <unistd.h>static void * thread_routine(void *);static void sighandler(int);int main(){ int ret; struct sigaction sa={0}; sa.sa_handler = sighandler; ret = sigaction(SIGSEGV,&sa,NULL); if(ret != 0 ) { perror("FAILED to set signal action"); } pthread_t thread_id; pthread_create(&thread_id,NULL,thread_routine,NULL); for(int i = 0;i != 200;++i) { using namespace std; sleep(1); cerr<<"i is "<<i<<endl; }}void * thread_routine(void *){ int * i = 0; *i = 0;}static char mess[]="still inside/n";void sighandler(int){ long long num = 0; for(;num != 0x7fffffffffffffffL;++num) { write(2,mess,sizeof(mess)); sleep(1); }}

 

发现主线程和线程是交替输出的。因此其它线程没有被挂起。