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server.cc
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server.cc
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/// @file server.cc
/// @author moyin(moyin1004@163.com)
/// @data 2021-03-10 10:58:45
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <memory>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/epoll.h>
#include <sys/time.h>
#include <errno.h>
#include <unistd.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <cstring>
#include <iostream>
#include <string>
#include <functional>
#include <deque>
#include <vector>
#include <thread>
#include <mutex>
#include <condition_variable>
using namespace std;
#define SERVER_PORT 10800
#define SERVER_IP "127.0.0.1"
#define MAX_BUFFER 128
#define MAX_EPOLLSIZE 100000
#define MAX_THREAD 8
#define MAX_PORT 100
#define TIME_SUB_MS(tv1, tv2) ((tv1.tv_sec - tv2.tv_sec) * 1000 + (tv1.tv_usec - tv2.tv_usec) / 1000)
#define ERROR_EXIT(msg) do{\
cerr << msg << endl;\
exit(EXIT_FAILURE);\
} while(0)
class ThreadPool {
public:
using TaskFunc = function<void()>;
// 禁止拷贝与赋值
ThreadPool(const ThreadPool&) = delete;
ThreadPool &operator=(const ThreadPool&) = delete;
ThreadPool(uint32_t num = 4)
:_threadNum(num),
_isExit(false)
{
init();
}
~ThreadPool() {
while (!_taskQue.empty()) {
usleep(100);
}
_isExit = true;
// 唤醒所有线程并回收资源
_notnull.notify_all();
for (auto &t : _threadPool) {
cout << "thread id:" << t->get_id() << endl;
t.get()->join();
}
}
// 添加任务
void addTask(TaskFunc &&task) {
// 自动加解锁
std::lock_guard<mutex> guard(_taskMutex);
_taskQue.push_back(std::move(task));
_notnull.notify_one();
}
private:
static void threadFunc(void *);
void init() {
for (uint32_t i = 0; i < _threadNum; ++i) {
unique_ptr<thread> up(new thread(std::bind(ThreadPool::threadFunc, this)));
_threadPool.push_back(std::move(up));
}
}
void run() {
while (!_isExit) {
std::unique_lock<mutex> guard(_taskMutex); // 配合条件变量使用
while (_taskQue.empty() && !_isExit) {
_notnull.wait(guard);
}
if (_isExit) break;
TaskFunc &task = _taskQue.front();
task();
_taskQue.pop_front();
}
}
uint32_t _threadNum;
bool _isExit;
vector <unique_ptr<thread>> _threadPool;
deque<TaskFunc> _taskQue;
mutex _taskMutex;
condition_variable _notnull;
int thread_id;
};
void ThreadPool::threadFunc(void *arg) {
ThreadPool *p = reinterpret_cast<ThreadPool*>(arg);
p->run();
}
// 设置非阻塞
static int ntySetNonblock(int fd) {
int flags;
flags = fcntl(fd, F_GETFL, 0);
if (flags < 0) return flags;
flags |= O_NONBLOCK;
if (fcntl(fd, F_SETFL, flags) < 0) return -1;
return 0;
}
static int ntySetReUseAddr(int fd) {
int reuse = 1;
return setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&reuse, sizeof(reuse));
}
static int curfds = 1;
static int nRun = 0;
void client_data_process(int clientfd, int epoll_fd) {
char buffer[MAX_BUFFER];
bzero(buffer, MAX_BUFFER);
int ret = recv(clientfd, buffer, MAX_BUFFER, 0);
if (ret > 0) {
if (nRun) {
printf("TcpRecv --> curfds : %d, buffer: %s\n", curfds, buffer);
send(clientfd, "quit", 4, 0);
}
else send(clientfd, buffer, strlen(buffer), 0);
} else if (ret == 0 || ret == ENOTCONN) {
epoll_event ev;
ev.events = EPOLLIN;
ev.data.fd = clientfd;
epoll_ctl(epoll_fd, EPOLL_CTL_DEL, clientfd, &ev);
printf("disconnect %d\n", clientfd);
close(clientfd);
--curfds;
}
}
int listenfd(int fd, int *fds) {
for (int i = 0; i < MAX_PORT; ++i) {
if (fd == *(fds+i)) return *(fds+i);
}
return 0;
}
int main() {
int sockfds[MAX_PORT] = {0};
int epoll_fd = epoll_create(MAX_EPOLLSIZE);
for (int i = 0; i < MAX_PORT; ++i) {
int sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
ERROR_EXIT("socket");
}
struct sockaddr_in addr;
memset(&addr, 0, sizeof(struct sockaddr_in));
addr.sin_family = AF_INET;
addr.sin_port = htons(SERVER_PORT+i);
addr.sin_addr.s_addr = INADDR_ANY;
if (bind(sockfd, (struct sockaddr*)&addr, sizeof(struct sockaddr_in)) < 0) {
ERROR_EXIT("bind");
}
if (listen(sockfd, 5) < 0) {
ERROR_EXIT("listen");
}
sockfds[i] = sockfd;
cout << "C1000k Server Listen on Port:" << SERVER_PORT+i << endl;
struct epoll_event ev;
ev.events = EPOLLIN | EPOLLET;
ev.data.fd = sockfd;
epoll_ctl(epoll_fd, EPOLL_CTL_ADD, sockfd, &ev);
}
struct timeval tv_begin;
gettimeofday(&tv_begin, NULL);
struct epoll_event events[MAX_EPOLLSIZE];
ThreadPool *p_tp = new ThreadPool(MAX_THREAD);
while (1) {
int nfds = epoll_wait(epoll_fd, events, curfds, -1);
if (nfds == 0) break;
if (nfds == -1) {
cerr << "epoll_wait" << endl;
break;
}
for (int i = 0;i < nfds; ++i) {
int sockfd = listenfd(events[i].data.fd, sockfds);
struct epoll_event ev;
if (sockfd) {
struct sockaddr_in client_addr;
memset(&client_addr, 0, sizeof(struct sockaddr_in));
socklen_t client_len = sizeof(client_addr);
int clientfd = ::accept(sockfd, (struct sockaddr*)&client_addr, &client_len);
if (clientfd < 0) {
return clientfd;
}
ev.events = EPOLLIN;
ev.data.fd = clientfd;
if (curfds++ > 1000 * 1008) {
nRun = 1;
}
if (curfds % 1000 == 999) {
struct timeval tv_cur;
memcpy(&tv_cur, &tv_begin, sizeof(struct timeval));
gettimeofday(&tv_begin, NULL);
int time_used = TIME_SUB_MS(tv_begin, tv_cur);
printf("connections: %d, sockfd:%d, time_used:%d\n", curfds, clientfd, time_used);
}
ntySetNonblock(clientfd);
ntySetReUseAddr(clientfd);
epoll_ctl(epoll_fd, EPOLL_CTL_ADD, clientfd, &ev);
} else {
int clientfd = events[i].data.fd;
if (nRun) {
printf("New Data is Comming: ");
client_data_process(clientfd, epoll_fd);
} else {
p_tp->addTask(std::bind(client_data_process, clientfd, epoll_fd));
}
}
} // end for
} // end while
close(epoll_fd);
delete p_tp;
return 0;
}