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  • 信号

     1 #include <stdio.h>
     2 #include <stdlib.h>
     3 #include<unistd.h>
     4 #include<string.h>
     5 #include<sys/types.h>
     6 #include<sys/wait.h>
     7 #include<sys/ipc.h>
     8 #include<sys/shm.h>
     9 #include<signal.h>
    10 
    11 int func1(int a,int b)
    12 {
    13     return a+b;
    14 }
    15 
    16 void catch_Signal(int Sign)
    17 {
    18     switch(Sign)
    19     {
    20     case SIGINT:
    21         printf("SIGINT Signal
    ");
    22         exit(0);
    23     case SIGALRM:
    24         printf("SIGALRM Signal
    ");
    25 //        alarm(5);
    26         break;
    27     }
    28 
    29 }
    30 
    31 void mysleep(int i)
    32 {
    33     alarm(i);
    34     pause();
    35 }
    36 
    37 int signal1(int signo,void (*func)(int))
    38 {
    39     struct sigaction act,oact;
    40     act.sa_handler = func;
    41     sigemptyset(&act.sa_mask);
    42     act.sa_flags = 0;
    43     return sigaction(signo,&act,&oact);
    44 
    45 }
    46 
    47 int main(int arg ,char *args[])
    48 {
    49 //    int (*p)(int,int);
    50 //    p = func1;  //鍥炶皟鍑芥暟
    51 //    printf("p=%d
    ",p(4,6));
    52     printf("SIGINT = %d,SIGALRM = %d
    ",SIGINT,SIGALRM);
    53 
    54 //    signal(SIGINT,catch_Signal);
    55 //    signal(SIGALRM,catch_Signal);
    56     signal1(SIGINT,catch_Signal);
    57     signal1(SIGALRM,catch_Signal);
    58 
    59     int i=0;
    60     mysleep(10);
    61     printf("LLLLLLLLLLLLLLLLLLLLL
    ");
    62     while(1)
    63     {
    64         scanf("%d",&i);
    65         printf("hello%d
    ",i++);
    66         sleep(1);
    67     }
    68 
    69     return EXIT_SUCCESS;
    70 }
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  • 原文地址:https://www.cnblogs.com/leejxyz/p/5716434.html
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