paper4—Multi-MPE_Trigger_Algorithm—testing

在同一台电脑测试：

[client-manet.c] send to
[(MASTER) handle_client(void *arg) IN server-manet.c] send to
[(MASTER) m_thread(void *arg) IN server-manet.c] send to
[(SLAVE) slave(void *arg) IN server-manet-slave.c]

启动顺序：
[root@localhost server-client-pthread-c]# ./server-manet
[root@localhost server-client-pthread-c]# ./server-manet-slave
[root@localhost server-client-pthread-c]# ./client-manet

++++++++++++++++++++++++++++++++++++++++++++++
在CORE中测试时：
1.     在每个节点的主目录创建文件： ctrl.txt, masterip.txt, hosts,
    根据batman-adv协议，选择 主节点，其它为从节点；要修改 上面3个文件的值

[client-manet.c] send to
[(MASTER) handle_client(void *arg) IN server-manet.c] send to
[(MASTER) m_thread(void *arg) IN server-manet.c] send to
[(SLAVE) slave(void *arg) IN server-manet.c]

//******************** client-manet.c
int main(int argc, char *argv[])
{
    masterip <- read from masterip.txt;            //global variable, echo 1.1.1.1 >masterip.txt
    connect(sock, masterip);
    CHK(send(sock, "running process, update database", strlen("running process, update database"), 0));
}
//******************** client-manet.c

//******************** server-manet.c

int ctrl;            //global variable
int changed=0;
int pipe_fd[2];
char *masterip;
char *self_ip;

//read * from client-manet.c
//模拟 流程执行，数据库更新的事件，事件驱动 数据库同步
void *handle_client(void *arg)
{
    bind(listener, self_ip);
    int pipe_write = *((int *)arg);
    while (1) {
        CHK2(client, accept(listener, (struct sockaddr *)&peer, &socklen));
        while (1) {
            CHK2(len, recv(client, clientmsg, CLIENTMSG_SIZE, MSG_NOSIGNAL));
            CHK(write(pipe_write, clientmsg, strlen(clientmsg)));    //send MSG to m_thread(void *arg)
        }
    }
}

int main(int argc, char *argv[])
{
    sprintf(self_ip,"%s",getipaddress("enp13s0"));

    pthread_create(&readctrl, NULL, read_ctrl, NULL);
    pthread_create(&writer, NULL, handle_client, (void *)&pipe_fd[1]);
    while (1) {
            pthread_create(&tid, NULL, master, NULL);    //ctrl==1
        or
            pthread_create(&tid, NULL, slave, NULL);    //ctrl==0
    }
}

void *read_ctrl(void *arg)
{
    while (1) {
        ctrl <- read from ctrl.txt;                    //global variable, echo 1 >ctrl.txt
        masterip <- read from masterip.txt;            //global variable, echo 1.1.1.1 >masterip.txt
        master_ip = ip2uint(getipaddress(masterip));
        if (master_ip!=prev_ip) {
            replaceline(hosts, line, "masterip   mpe.localhost");        //update hosts
        }
    }
}

void *slave(void *arg)
{
    connect(sock, masterip);
    while (1)
    {
        if (changed) break;
        recv(sock, buf, BUF_SIZE, MSG_NOSIGNAL);    //read * from master
    }
}

void *master(void *arg)
{
    sprintf(self_ip,"%s",getipaddress("enp13s0"));
    bind(listener, self_ip);
    while (1) {
        if (changed) break;
        CHK2(client, accept(listener, (struct sockaddr *)&peer, &socklen));
        int rt = pthread_create(&reader, NULL, m_thread, (void *)&client);
    }
}

//event_driven, read pipe_fd[0] from handle_client(void *arg) which read * from client-manet.c
void *m_thread(void *arg)
{
    int client = *((int *)arg);
    CHK(epoll_ctl(epfd, EPOLL_CTL_ADD, pipe_fd[0], &ev));
    //使用epoll模拟 流程执行，数据库更新的事件，事件驱动 数据库同步
    while (1) {        //communication between master & slave
        if (changed) break;
        if((epoll_events_count = epoll_wait(epfd, events, 1, EPOLL_RUN_TIMEOUT)) < 0){
            sleep(1);
            continue;
        }
        for (int i = 0; i < epoll_events_count; i++) {
            if (events[i].data.fd == pipe_fd[0])    //管道读端，从client-manet.c接受信息
            {
                CHK2(res, read(pipe_fd[0], clientmsg, CLIENTMSG_SIZE));
                CHK(send(client, "synchronous data", strlen("synchronous data"), MSG_NOSIGNAL));
            }
        }
    }
}
//******************** server-manet.c

//******************** server-manet-slave.c
int main(int argc, char *argv[])
{
    sprintf(self_ip,"%s",getipaddress("enp13s0"));
    pthread_create(&readctrl, NULL, read_ctrl, NULL);
    while (1) {
        pthread_create(&tid, NULL, slave, NULL);
        pthread_join(tid, &tret);
    } //end while

}

void *read_ctrl(void *arg)
{
    char filename[6] = "hosts";    //set master_ip in /etc/hosts
    uint32_t me_ip = ip2uint(getipaddress("enp13s0"));
    while (1) {
        ctrl <- read from ctrl_slave.txt;            //global variable, echo 0 >ctrl_slave.txt
        masterip <- read from masterip.txt;            //global variable, echo 1.1.1.1 >masterip.txt
        master_ip = ip2uint(getipaddress(masterip));
        if (master_ip!=prev_ip) {
            replaceline(hosts, line, "masterip   mpe.localhost");        //update hosts
        }
    }
}

void *slave(void *arg)
{
    connect(sock, masterip);
    while (1)
    {
        if (changed) break;
        recv(sock, buf, BUF_SIZE, MSG_NOSIGNAL));
    }
}
//******************** server-manet-slave.c