kemata处理

 

/*
 * Using a known ketama.servers file, and a fixed set of keys
 * print and hash the output of this program using your modified
 * libketama, compare the hash of the output to the known correct
 * hash in the test harness.
 */

#include <ketama.h>
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv)
{
  if(argc==1){
        printf("Usage: %s <ketama.servers file>\n", *argv);//相当于*argv[]
        return 1;//返回异常
  }

 ketama_continuum c; //声明一个全类型的变量
 ketama_roll( &c, *++argv ); //将服务器分散到圈中的个个地点

 printf( "%s\n", ketama_error() );

 int i;
 for ( i = 0; i < 10; i++ )
  {
   char k[10];
   sprintf( k, "%d", i );   //格式化字符串后赋值
   unsigned int kh = ketama_hashi( k ); //进行散列处理，获得散列值
    mcs* m = ketama_get_server( k, c );  //将散列值放入圈中，并返回mcs结构体指针

   printf( "%u %u %s\n", kh, m->point, m->ip );
 }
  ketama_smoke(c);
  return 0;