（1）進(jìn)程的軟中斷通信 #include #include #include #include int wait_flag; void stop(); main( ) { int pid1, pid2; // 定義兩個(gè)進(jìn)程號(hào)變量 signal(2,stop); // 或者 signal (14,stop); while((pid1 = fork( )) == -1); // 若創(chuàng)建子進(jìn)程1不成功,則空循環(huán) if(pid1 > 0) { // 子進(jìn)程創(chuàng)建成功,pid1為進(jìn)程號(hào) while((pid2 = fork( )) == -1); // 創(chuàng)建子進(jìn)程2 if(pid2 > 0) { wait_flag = 1; //sleep(1); // 父進(jìn)程等待5秒 kill(pid1,SIGUSR1); // 殺死進(jìn)程1 kill(pid2,SIGUSR2); // 殺死進(jìn)程2 wait(0); wait(0); printf("\n Parent process is killed !!\n"); exit(0); // 父進(jìn)程結(jié)束 } else { wait_flag = 1; signal(SIGUSR2,stop); // 等待進(jìn)程2被殺死的中斷號(hào)17 printf("\n Child process 2 is killed by parent !!\n"); exit(0); } } else { wait_flag = 1; signal(SIGUSR1,stop); // 等待進(jìn)程1被殺死的中斷號(hào)16 printf("\n Child process 1 is killed by parent !!\n"); exit(0); } } void stop() { wait_flag = 0; } （2）進(jìn)程的管道通信 #include #include #include int pid1,pid2; // 定義兩個(gè)進(jìn)程變量 main( ) { int fd[2]; char OutPipe[100],InPipe[100]; // 定義兩個(gè)字符數(shù)組 pipe(fd); // 創(chuàng)建管道 while((pid1 = fork( )) == -1); // 如果進(jìn)程1創(chuàng)建不成功,則空循環(huán) if(pid1 == 0) { lockf(fd[1],1,0); // 鎖定管道 sprintf(OutPipe,"\n Child process 1 is sending message!\n"); write(fd[1],OutPipe,50); // 向管道寫(xiě)入數(shù)據(jù) sleep(5); // 等待讀進(jìn)程讀出數(shù)據(jù) lockf(fd[1],0,0); // 解除管道的鎖定 exit(0); // 結(jié)束進(jìn)程1 } else { while((pid2 = fork()) == -1); // 若進(jìn)程2創(chuàng)建不成功,則空循環(huán) if(pid2 == 0) { lockf(fd[1],1,0); sprintf(OutPipe,"\n Child process 2 is sending message!\n"); write(fd[1],OutPipe,50); sleep(5); lockf(fd[1],0,0); exit(0); } else { wait(0);