#include<stdio.h>

 #include<stdlib.h>

 #include<unistd.h>

 #include<sys/time.h>

 #include<signal.h>

 #include<string.h>

 #define BUFMAX  1024

 static void alarm_handler(int s);

 static int init_mod;

 static struct sigaction oldact;

 typedef void (*anytm_t)(void *s);

 typedef struct myalarm{

     int sec;

     anytm_t anytm;

     //void (*anytm_t)(void *s);

     char * arg;

 }tim_t;

 static tim_t *buf[BUFMAX] = {};

 //关闭闹钟

 static void buf_break(void)

 {

     struct itimerval itv;

     sigaction(SIGALRM,&oldact,NULL);

     itv.it_interval.tv_sec = ;

     itv.it_interval.tv_usec = ;

     itv.it_value.tv_sec = ;

     itv.it_value.tv_usec = ;

     setitimer(ITIMER_REAL,&itv,NULL);

     init_mod = ;

 }

 static void func(void *s)

 {

     printf("%s",(char *)s);

     fflush(NULL);

 }

 static void alarm_init(void)

 {

     struct itimerval itv;

     itv.it_interval.tv_sec = ;

     itv.it_interval.tv_usec = ;

     itv.it_value.tv_sec = ;

     itv.it_value.tv_usec = ;

     struct sigaction act;

     act.sa_handler = alarm_handler;

     sigemptyset(&act.sa_mask);

     act.sa_flags = ;

     setitimer(ITIMER_REAL,&itv,NULL);

     sigaction(SIGALRM,&act,&oldact);

     init_mod = ;

 }

 static void alarm_handler(int s)

 {

     for(int i = ;i < ;i++)

     {

         if(buf[i] != NULL)

         {

             buf[i]->sec--;

             if(buf[i]->sec == )

             {

                 buf[i]->anytm(buf[i]->arg);

                 free(buf[i]);

                 buf[i] = NULL;

             }

         }

     }

 }

 static int time_init(int n,anytm_t anytm,void *p)

 {

     tim_t *t = NULL;

     int i;

     if(==init_mod)

         alarm_init();

     t = malloc(sizeof(tim_t) + strlen(p));

     if(t == NULL)

         return -;

     for(int i = ;i < BUFMAX;i++)

     {

         if(buf[i] == NULL)

         {

             break;

         }

     }

     t->sec = n;

     t->anytm = anytm;

     strcpy(t->arg,(char *)p);

     buf[i] = t;

     return i;

 }

 void anytime_destroy(void)

 {

     buf_break();

     for(int i = ;i < ;i++)

     {

         if(buf[i] != NULL)

         {

             free(buf[i]);

             buf[i] = NULL;

         }

     }

 }

 int main(void)

 {

     int i = ;

     time_init(,func,"hello");

     time_init(,func,"world");

     time_init(,func,"uplooking");

     while()

     {

         write(,"*",);

         sleep();

         i++;

         if(i == )

             anytime_destroy();

     }

     exit();

 }