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Copy pathEpoll.cpp
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executable file
·152 lines (130 loc) · 3.49 KB
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// @Author Lin Ya
// @Email [email protected]
#include "Epoll.h"
#include "Util.h"
#include "base/Logging.h"
#include <sys/epoll.h>
#include <errno.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>
#include <queue>
#include <deque>
#include <assert.h>
#include <arpa/inet.h>
#include <iostream>
using namespace std;
const int EVENTSNUM = 4096;
const int EPOLLWAIT_TIME = 10000;
typedef shared_ptr<Channel> SP_Channel;
Epoll::Epoll():
epollFd_(epoll_create1(EPOLL_CLOEXEC)),
events_(EVENTSNUM)
{
assert(epollFd_ > 0);
}
Epoll::~Epoll()
{ }
// 注册新描述符
void Epoll::epoll_add(SP_Channel request, int timeout)
{
int fd = request->getFd();
if (timeout > 0)
{
add_timer(request, timeout);
fd2http_[fd] = request->getHolder();
}
struct epoll_event event;
event.data.fd = fd;
event.events = request->getEvents();
request->EqualAndUpdateLastEvents();
fd2chan_[fd] = request;
if(epoll_ctl(epollFd_, EPOLL_CTL_ADD, fd, &event) < 0)
{
perror("epoll_add error");
fd2chan_[fd].reset();
}
}
// 修改描述符状态
void Epoll::epoll_mod(SP_Channel request, int timeout)
{
if (timeout > 0)
add_timer(request, timeout);
int fd = request->getFd();
if (!request->EqualAndUpdateLastEvents())
{
struct epoll_event event;
event.data.fd = fd;
event.events = request->getEvents();
if(epoll_ctl(epollFd_, EPOLL_CTL_MOD, fd, &event) < 0)
{
perror("epoll_mod error");
fd2chan_[fd].reset();
}
}
}
// 从epoll中删除描述符
void Epoll::epoll_del(SP_Channel request)
{
int fd = request->getFd();
struct epoll_event event;
event.data.fd = fd;
event.events = request->getLastEvents();
//event.events = 0;
// request->EqualAndUpdateLastEvents()
if(epoll_ctl(epollFd_, EPOLL_CTL_DEL, fd, &event) < 0)
{
perror("epoll_del error");
}
fd2chan_[fd].reset();
fd2http_[fd].reset();
}
// 返回活跃事件数
std::vector<SP_Channel> Epoll::poll()
{
while (true)
{
int event_count = epoll_wait(epollFd_, &*events_.begin(), events_.size(), EPOLLWAIT_TIME);
if (event_count < 0)
perror("epoll wait error");
std::vector<SP_Channel> req_data = getEventsRequest(event_count);
if (req_data.size() > 0)
return req_data;
}
}
void Epoll::handleExpired()
{
timerManager_.handleExpiredEvent();
}
// 分发处理函数
std::vector<SP_Channel> Epoll::getEventsRequest(int events_num)
{
std::vector<SP_Channel> req_data;
for(int i = 0; i < events_num; ++i)
{
// 获取有事件产生的描述符
int fd = events_[i].data.fd;
SP_Channel cur_req = fd2chan_[fd];
if (cur_req)
{
cur_req->setRevents(events_[i].events);
cur_req->setEvents(0);
// 加入线程池之前将Timer和request分离
//cur_req->seperateTimer();
req_data.push_back(cur_req);
}
else
{
LOG << "SP cur_req is invalid";
}
}
return req_data;
}
void Epoll::add_timer(SP_Channel request_data, int timeout)
{
shared_ptr<HttpData> t = request_data->getHolder();
if (t)
timerManager_.addTimer(t, timeout);
else
LOG << "timer add fail";
}