高并发的epoll+多线程

#include <stdio.h>#include <stdlib.h>#include <errno.h>#include <string.h>#include <sys/types.h>#include <netinet/in.h>#include <sys/socket.h>#include <sys/wait.h>#include <unistd.h>#include <arpa/inet.h>#include <openssl/ssl.h>#include <openssl/err.h>#include <fcntl.h>#include <sys/epoll.h>#include <sys/time.h>#include <sys/resource.h>#include <pthread.h>#define MAXBUF 1024 #define MAXEPOLLSIZE 10000void* pthread_handle_message(void* para);/* setnonblocking - 设置句柄为非阻塞方式 */ int setnonblocking(int sockfd) {     if (fcntl(sockfd, F_SETFL, fcntl(sockfd, F_GETFD, 0)|O_NONBLOCK) == -1) {         return -1;     }     return 0; }static int count111 = 0;static time_t oldtime = 0, nowtime = 0;//------------------------------------------------------------int main(int argc, char **argv) {     int listener, new_fd, nfds, n, ret;     struct epoll_event ev;     int kdpfd, curfds;     socklen_t len;     struct sockaddr_in my_addr, their_addr;     unsigned int myport, lisnum;     struct epoll_event events[MAXEPOLLSIZE];     struct rlimit rt;    if (argc>1)         myport = atoi(argv[1]);     else         myport = 8006;    if (argc>2)         lisnum = atoi(argv[2]);     else         lisnum = 10;    /* 设置每个进程允许打开的最大文件数 */     rt.rlim_max = rt.rlim_cur = MAXEPOLLSIZE;     if (setrlimit(RLIMIT_NOFILE, &rt) == -1) {         perror("setrlimit");         exit(1);     }     else printf("设置系统资源参数成功！/n");    /* 开启 socket 监听 */     if ((listener = socket(PF_INET, SOCK_STREAM, 0)) == -1) {         perror("socket");         exit(1);     } else         printf("socket 创建成功！/n");    /*设置socket属性，端口可以重用*/     int opt=SO_REUSEADDR;     setsockopt(listener,SOL_SOCKET,SO_REUSEADDR,&opt,sizeof(opt));    /*设置socket为非阻塞模式*/     setnonblocking(listener);    bzero(&my_addr, sizeof(my_addr));     my_addr.sin_family = PF_INET;     my_addr.sin_port = htons(myport);     if (argc>3)         my_addr.sin_addr.s_addr = inet_addr(argv[3]);     else         my_addr.sin_addr.s_addr = INADDR_ANY;    if (bind         (listener, (struct sockaddr *) &my_addr, sizeof(struct sockaddr))         == -1) {             perror("bind");             exit(1);     } else         printf("IP 地址和端口绑定成功/n");    if (listen(listener, lisnum) == -1) {         perror("listen");         exit(1);     } else         printf("开启服务成功！/n");    /* 创建 epoll 句柄，把监听 socket 加入到 epoll 集合里 */     kdpfd = epoll_create(MAXEPOLLSIZE);     len = sizeof(struct sockaddr_in);     ev.events = EPOLLIN | EPOLLET;     ev.data.fd = listener;     if (epoll_ctl(kdpfd, EPOLL_CTL_ADD, listener, &ev) < 0) {         fprintf(stderr, "epoll set insertion error: fd=%d/n", listener);         return -1;     } else         printf("监听 socket 加入 epoll 成功！/n");     curfds = 1;     while (1) {         /* 等待有事件发生 */         nfds = epoll_wait(kdpfd, events, curfds, -1);         if (nfds == -1) {             perror("epoll_wait");             continue;         }         /* 处理所有事件 */         for (n = 0; n < nfds; ++n) {             if (events[n].data.fd == listener) {                 new_fd = accept(listener, (struct sockaddr *) &their_addr,                     &len);                 if (new_fd < 0) {                     perror("accept");                     continue;                 } else                 {                    //printf("有连接来自于： %s:%d， 分配的 socket 为:%d/n", inet_ntoa(their_addr.sin_addr), ntohs(their_addr.sin_port), new_fd);                }                setnonblocking(new_fd);                 ev.events = EPOLLIN | EPOLLET;                 ev.data.fd = new_fd;                 if (epoll_ctl(kdpfd, EPOLL_CTL_ADD, new_fd, &ev) < 0) {                     fprintf(stderr, "把 socket '%d' 加入 epoll 失败！%s/n",                         new_fd, strerror(errno));                     return -1;                 }                 curfds++;             } else {                 pthread_attr_t attr;                pthread_t threadId;                                /*初始化属性值，均设为默认值*/                 pthread_attr_init(&attr);                 pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);                 /* 设置线程为分离属性*/                 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);                if(pthread_create(&threadId,&attr,pthread_handle_message,(void*)&(events[n].data.fd)))                {                     perror("pthread_creat error!");                     exit(-1);                 }             }         }     }     close(listener);     return 0; }void* pthread_handle_message(void* para){    char recvBuf[1024] = {0};     int ret = 999;    int rs = 1;    int socketfd = *(int *)para;    while(rs)    {        ret = recv(socketfd,recvBuf,1024,0);// 接受客户端消息        if(ret < 0)        {            //由于是非阻塞的模式,所以当errno为EAGAIN时,表示当前缓冲区已无数据可//读在这里就当作是该次事件已处理过。            if(errno == EAGAIN)            {                printf("EAGAIN\n");                break;            }            else{                printf("recv error! errno:%d\n", errno);                        close(socketfd);                break;            }        }        else if(ret == 0)        {            // 这里表示对端的socket已正常关闭.             rs = 0;        }        if(ret == sizeof(recvBuf))            rs = 1; // 需要再次读取        else            rs = 0;    }    if(ret>0){        count111 ++;        struct tm *today;        time_t ltime;        time( &nowtime );        if(nowtime != oldtime){            printf("%d\n", count111);            oldtime = nowtime;            count111 = 0;        }        char buf[1000] = {0};        sprintf(buf,"HTTP/1.0 200 OK\r\nContent-type: text/plain\r\n\r\n%s","Hello world!\n");        send(socketfd,buf, strlen(buf),0);    }    close(socketfd);}