select.c

Unix 环境下用C语言实现的内存数据库。

#include "MemDataBase.h"
#include "demo.h"
int main(int argc,char **argv)
{
    MEMDATABASE *pMemDB;
    DEMO_DEF stuDemo;
    int i,iRet,iIpcKey;
    long lBegin,lEnd;
    if(argc!=4)
    {
        printf("Usage:%s Ipckey Begin End\n",argv[0]);
        exit(0);
    }
    iIpcKey = atoi(argv[1]);
    lBegin = atoi(argv[2]);
    lEnd = atoi(argv[3]);
    iRet = AttachMemDB(&pMemDB,iIpcKey);
    if(iRet!=T_SUCCESS)
    {
        printf("AttachMemDB Error[%d]\n",iRet);
        exit(1);
    }
    printf("IPCKEY   =   %d\n",pMemDB->iIpcKey);
    printf("SHM_ID   =   %d\n",pMemDB->iShmId);
    printf("SEM_ID   =   %d\n",pMemDB->iSemId);

    for(i=lBegin;i<=lEnd;i++)
    {
        stuDemo.id = i;
        iRet = SelectMemDB(pMemDB,(char*)&stuDemo);
        if(iRet!=T_SUCCESS)
        {
            printf("SelectMemDB Error[%d]\n",iRet);
            exit(1);
        }
        /*
        printf("id    = [%d]\n",stuDemo.id);
        printf("subid = [%d]\n",stuDemo.subid);
        printf("name  = [%s]\n",stuDemo.name);
        */
        printf("[%d] Select Success!\n",i);
    }
}