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| #include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <sys/epoll.h>
#include <unistd.h>
#include <sys/types.h>
#include <errno.h>
#include <pthread.h>
#include <fcntl.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <memory.h>
const int MAXLINE=10;
const int OPEN_MAX=100;
const int LISTENQ=20;
const int SERV_PORT=1025;
const int INFTIM=1000;
struct task{
int fd;
task *next;
};
struct user_data{
int fd;
unsigned int n_size;
char line[MAXLINE];
};
void* readtask(void* args);
void* writetask(void* args);
epoll_event ev,event[20];
int epfd;
pthread_mutex_t mutex;
pthread_cond_t cond;
task *readhead=NULL,*readtail=NULL,*writehead=NULL;
using namespace std;
void check(int i,char* j)
{
if(i<0) perror(j);
}
void setnonblocking(int sock)
{
int opts=fcntl(sock,F_GETFL);
if(opts<0){
perror("fcntl\n");
exit(-1);
}
opts|=O_NONBLOCK;
if(fcntl(sock,F_SETFL,opts)<0)
{
perror("fcntl setfl\n");
exit(-1);
}
}
int main()
{
pthread_mutex_init(&mutex,NULL);
pthread_cond_init(&cond,NULL);
task *new_task=NULL;
user_data *rdata=NULL;
pthread_t pid1,pid2;
pthread_create(&pid1,NULL,readtask,NULL);
pthread_create(&pid2,NULL,readtask,NULL);
epfd=epoll_create(10);
sockaddr_in clientadr,serveraddr;
int listenfd=socket(AF_INET,SOCK_STREAM,0);
setnonblocking(listenfd);
ev.data.fd=listenfd;
ev.events=EPOLLIN|EPOLLET;
epoll_ctl(epfd,EPOLL_CTL_ADD,listenfd,&ev);
bzero(&serveraddr,sizeof(serveraddr));
serveraddr.sin_family=AF_INET;
serveraddr.sin_port=htons(SERV_PORT);
serveraddr.sin_addr.s_addr=INADDR_ANY;
bind(listenfd,(sockaddr*)&serveraddr,sizeof(serveraddr));
listen(listenfd,LISTENQ);
int maxi=0;
for(;;)
{
int nfds=epoll_wait(epfd,event,20,0);
for(int i=0;i<nfds;i++)
{
if(event[i].data.fd==listenfd)
{
socklen_t len;
int connectfd=accept(listenfd,(sockaddr*)&clientadr,&len);
if(connectfd<0)
{
perror("connect error\n");
exit(-1);
}
setnonblocking(connectfd);
char *str=inet_ntoa(clientadr.sin_addr);
cout<<"connec_from>>"<<str<<endl;
ev.data.fd=connectfd;
ev.events=EPOLLIN|EPOLLET;
epoll_ctl(epfd,EPOLL_CTL_ADD,connectfd,&ev);
}else if(event[i].events&EPOLLIN)
{
cout<<"reading"<<endl;
int sockfd;
if((sockfd=event[i].data.fd)<0) continue;
new_task=new task();
new_task->fd=sockfd;
new_task->next=NULL;
pthread_mutex_lock(&mutex);
if(readhead==NULL)
{
readhead=new_task;
readtail=new_task;
}else{
readtail->next=new_task;
readtail=new_task;
}
pthread_cond_broadcast(&cond);
pthread_mutex_unlock(&mutex);
}else if(event[i].events&EPOLLOUT){
auto rdata=(user_data*)event[i].data.ptr;
int sockfd=rdata->fd;
write(sockfd,rdata->line,rdata->n_size);
delete rdata;
ev.data.fd=sockfd;
ev.events=EPOLLIN|EPOLLET;
epoll_ctl(epfd,EPOLL_CTL_MOD,sockfd,&ev);
}
}
}
return 0;
}
void* readtask(void* args)
{
int fd=-1;
unsigned int n;
user_data *data=NULL;
while(1)
{
pthread_mutex_lock(&mutex);
while(readhead==NULL)
pthread_cond_wait(&cond,&mutex);
fd=readhead->fd;
task* tmp=readhead;
readhead=readhead->next;
delete tmp;
pthread_mutex_unlock(&mutex);
data=new user_data;
data->fd=fd;
if((n=read(fd,data->line,MAXLINE))<0)
{
if(errno==ECONNRESET)
{
close(fd);
}else{
perror("readlin error\n");
}
if(data!=NULL) delete data;
}else{
if(n==0)
{
close(fd);
cout<<"client close connect!"<<endl;
if(data!=NULL) delete data;
}else{
data->n_size=n;
ev.data.ptr=data;
ev.events=EPOLLET|EPOLLOUT;
epoll_ctl(epfd,EPOLL_CTL_MOD,fd,&ev);
}
}
}
}
|
