3 ACE_Reactor 同步框架 网络聊天室
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3 ACE_Reactor 同步框架 网络聊天室
ACE_Reactor 框架
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650) this.width=650;" src="/upload/getfiles/default/2022/11/9/20221109025550559.jpg" title="ACE_reactor_02 mask.png" />网络聊天室
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650) this.width=650;" src="/upload/getfiles/default/2022/11/9/20221109025552795.jpg" title="02聊天服务器时序图.png" />
项目文件:
chunli@Linux:~/ace/AceChatRoom$ tree . ├── ChatMain.cpp ├── ChatRoom.cpp ├── ChatRoom.h ├── ParticipantAcceptor.cpp ├── ParticipantAcceptor.h ├── Participant.cpp ├── Participant.h ├── SignalHandler.cpp └── SignalHandler.h 0 directories, 9 files chunli@Linux:~/ace/AceChatRoom$
主程序:
chunli@Linux:~/ace/AceChatRoom$ cat ChatMain.cpp
#include <ace/Reactor.h>
#include "ParticipantAcceptor.h"
#include "SignalHandler.h"
int main() {
SignalHandler sh;
ParticipantAcceptor acceptor;
ACE_INET_Addr addr(8868);
if (acceptor.open(addr) == -1)
return 1;
return ACE_Reactor::instance()->run_reactor_event_loop();
}
chunli@Linux:~/ace/AceChatRoom$
ChatRoom类文件
chunli@Linux:~/ace/AceChatRoom$ cat ChatRoom.h
#ifndef CHATROOM_H_
#define CHATROOM_H_
#include <list>
#include <ace/Singleton.h>
#include <ace/Null_Mutex.h>
class Participant;
class ChatRoom {
public:
void join(Participant* user);
void leave(Participant* user);
void forwardMsg(const char* msg);
private:
std::list<Participant*> users;
};
// 不加锁的方式
typedef ACE_Singleton<ChatRoom, ACE_Null_Mutex> Room;
#endif /* CHATROOM_H_ */
chunli@Linux:~/ace/AceChatRoom$
chunli@Linux:~/ace/AceChatRoom$ cat ChatRoom.cpp
#include <cstring>
#include <iostream>
#include "ChatRoom.h"
#include "Participant.h"
void ChatRoom::join(Participant* user)
{
users.push_back(user);
}
void ChatRoom::leave(Participant* user)
{
std::list<Participant*>::iterator it = users.begin();
for (; it != users.end(); ++it)
{
if (*it == user)
{
users.erase(it);
break;
}
}
}
void ChatRoom::forwardMsg(const char* msg)
{
std::list<Participant*>::const_iterator it = users.begin();
for (; it != users.end(); ++it)
{
ACE_SOCK_Stream& sock = (*it)->socket();
if (sock.send(msg, std::strlen(msg)) == -1)
(*it)->handle_close(ACE_INVALID_HANDLE, 0);
}
}
chunli@Linux:~/ace/AceChatRoom$
ParticipantAcceptor类文件
chunli@Linux:~/ace/AceChatRoom$ cat ParticipantAcceptor.h
#ifndef PARTICIPANTACCEPTOR_H_
#define PARTICIPANTACCEPTOR_H_
#include <ace/Reactor.h>
#include <ace/Event_Handler.h>
#include <ace/SOCK_Acceptor.h>
class ParticipantAcceptor: ACE_Event_Handler {
public:
ParticipantAcceptor(ACE_Reactor* reactor = ACE_Reactor::instance());
virtual ~ParticipantAcceptor();
int open(const ACE_INET_Addr& addr);
virtual ACE_HANDLE get_handle() const;
virtual int handle_input(ACE_HANDLE h = ACE_INVALID_HANDLE);
virtual int handle_close(ACE_HANDLE h, ACE_Reactor_Mask closeMask);
private:
ACE_SOCK_Acceptor acceptor;
};
#endif /* PARTICIPANTACCEPTOR_H_ */
chunli@Linux:~/ace/AceChatRoom$
chunli@Linux:~/ace/AceChatRoom$
chunli@Linux:~/ace/AceChatRoom$ cat ParticipantAcceptor.cpp
#include <ace/Log_Msg.h>
#include "ParticipantAcceptor.h"
#include "ChatRoom.h"
#include "Participant.h"
ParticipantAcceptor::ParticipantAcceptor(ACE_Reactor* reactor) {
this->reactor(reactor);
}
ParticipantAcceptor::~ParticipantAcceptor() {
handle_close(ACE_INVALID_HANDLE, 0);
}
int ParticipantAcceptor::open(const ACE_INET_Addr& addr) {
if (acceptor.open(addr, 0) == -1)
ACE_ERROR_RETURN((LM_ERROR, "%p\n", "acceptor.open"), -1);
return reactor()->register_handler(this, ACE_Event_Handler::ACCEPT_MASK);
}
ACE_HANDLE ParticipantAcceptor::get_handle() const {
return acceptor.get_handle();
}
int ParticipantAcceptor::handle_input(ACE_HANDLE h) {
Participant* user = new Participant(reactor());
if (acceptor.accept(user->socket()) == -1)
ACE_ERROR_RETURN((LM_ERROR, "%p\n", "acceptor.accept"), -1);
if (user->open() == -1) {
ACE_ERROR_RETURN((LM_ERROR, "%p\n", "acceptor.accept"), -1);
user->handle_close(ACE_INVALID_HANDLE, 0);
} else {
Room::instance()->join(user);
}
return 0;
}
int ParticipantAcceptor::handle_close(ACE_HANDLE h, ACE_Reactor_Mask closeMask) {
if (acceptor.get_handle() != ACE_INVALID_HANDLE) {
ACE_Reactor_Mask m = ACE_Event_Handler::ACCEPT_MASK
| ACE_Event_Handler::DONT_CALL;
reactor()->remove_handler(this, m);
acceptor.close();
}
return 0;
}
chunli@Linux:~/ace/AceChatRoom$
Participant类文件
chunli@Linux:~/ace/AceChatRoom$ cat Participant.h
#ifndef PARTICIPANT_H_
#define PARTICIPANT_H_
#include <ace/Reactor.h>
#include <ace/Event_Handler.h>
#include <ace/SOCK_Acceptor.h>
class Participant: ACE_Event_Handler {
public:
static ACE_Time_Value maxMsgInterval;
Participant(ACE_Reactor* reactor = ACE_Reactor::instance());
int open();
virtual ACE_HANDLE get_handle() const;
virtual int handle_input(ACE_HANDLE h = ACE_INVALID_HANDLE);
virtual int handle_timeout(const ACE_Time_Value& t, const void* = 0);
virtual int handle_close(ACE_HANDLE h, ACE_Reactor_Mask closeMask);
ACE_SOCK_Stream& socket();
private:
ACE_Time_Value lastMsgTime;
ACE_SOCK_Stream sock;
};
#endif /* PARTICIPANT_H_ */
chunli@Linux:~/ace/AceChatRoom$ cat Participant.cpp
#include <ace/Log_Msg.h>
#include <ace/Timer_Queue.h>
#include "Participant.h"
#include "ChatRoom.h"
//ACE_Time_Value Participant::maxMsgInterval = ACE_Time_Value(5);
ACE_Time_Value Participant::maxMsgInterval = ACE_Time_Value(20);//20秒没有在聊天室说话的人,就被close
Participant::Participant(ACE_Reactor* reactor) {
this->reactor(reactor);
}
int Participant::open() {
lastMsgTime = reactor()->timer_queue()->gettimeofday();
int result =
reactor()->register_handler(this, ACE_Event_Handler::READ_MASK);
if (result != 0)
return result;
result = reactor()->schedule_timer(this, 0, ACE_Time_Value::zero,
maxMsgInterval);
return result;
}
ACE_HANDLE Participant::get_handle() const {
return sock.get_handle();
}
int Participant::handle_input(ACE_HANDLE h) {
char buf[512] = "";
ssize_t recvBytes = sock.recv(buf, sizeof(buf));
if (recvBytes <= 0)
ACE_ERROR_RETURN((LM_ERROR, "%p\n", "sock.recv"), -1);
lastMsgTime = reactor()->timer_queue()->gettimeofday();
Room::instance()->forwardMsg(buf);
return 0;
}
int Participant::handle_timeout(const ACE_Time_Value& t, const void*) {
if (t - lastMsgTime > maxMsgInterval)
reactor()->remove_handler(this, ACE_Event_Handler::READ_MASK);
return 0;
}
int Participant::handle_close(ACE_HANDLE h, ACE_Reactor_Mask closeMask) {
if (sock.get_handle() != ACE_INVALID_HANDLE) {
ACE_Reactor_Mask m = ACE_Event_Handler::ALL_EVENTS_MASK
| ACE_Event_Handler::DONT_CALL;
reactor()->cancel_timer(this);
reactor()->remove_handler(this, m);
sock.close();
Room::instance()->leave(this);
delete this;
}
return 0;
}
ACE_SOCK_Stream& Participant::socket() {
return sock;
}
chunli@Linux:~/ace/AceChatRoom$
SignalHandler类文件
chunli@Linux:~/ace/AceChatRoom$ cat SignalHandler.h
#ifndef SIGNALHANDLER_H_
#define SIGNALHANDLER_H_
#include <ace/Signal.h>
#include <ace/Reactor.h>
#include <ace/Event_Handler.h>
class SignalHandler: ACE_Event_Handler {
public:
SignalHandler(ACE_Reactor* reactor = ACE_Reactor::instance());
virtual int handle_signal(int signum, siginfo_t*, ucontext_t *);
};
#endif /* SIGNALHANDLER_H_ */
chunli@Linux:~/ace/AceChatRoom$ cat SignalHandler.cpp
#include <ace/Log_Msg.h>
#include "SignalHandler.h"
#include "ChatRoom.h"
SignalHandler::SignalHandler(ACE_Reactor* reactor) {
this->reactor(reactor);
ACE_Sig_Set signals;
signals.fill_set();
this->reactor()->register_handler(signals, this);
}
int SignalHandler::handle_signal(int signum, siginfo_t*, ucontext_t*) {
switch (signum) {
case SIGINT:
ACE_DEBUG((LM_DEBUG, "signal SIGINT, but not be terminated!\n"));
break;
case SIGUSR1:
ACE_DEBUG((LM_DEBUG, "signal SIGUSR1, broadcast greeting ...\n"));
Room::instance()->forwardMsg("hello every one!\n");
break;
case SIGUSR2:
ACE_DEBUG((LM_DEBUG, "signal SIGUSR2, shutdown chat room ...\n"));
this->reactor()->end_reactor_event_loop();
break;
}
return 0;
}
chunli@Linux:~/ace/AceChatRoom$
编译运行:
编译运行: chunli@Linux:~/ace/AceChatRoom$ g++ *.cpp -lACE -Wall && ./a.out 3个客户端连接上来: chunli@Linux:~$ nc localhost 8868 1111111111111111111111 1111111111111111111111 222222222222222222222222 3333333333333333333333333333333 11111111111111111111111111111 11111111111111111111111111111 2222222222222222222222222222222 333333333333333333333333333333 chunli@Linux:~$ nc localhost 8868 222222222222222222222222 222222222222222222222222 3333333333333333333333333333333 11111111111111111111111111111 2222222222222222222222222222222 2222222222222222222222222222222 333333333333333333333333333333 chunli@Linux:~$ chunli@Linux:~$ nc localhost 8868 3333333333333333333333333333333 3333333333333333333333333333333 11111111111111111111111111111 2222222222222222222222222222222 333333333333333333333333333333 333333333333333333333333333333 chunli@Linux:~$ Ctrl+C杀不死 chunli@Linux:~/ace/AceChatRoom$ g++ *.cpp -lACE -Wall && ./a.out ^Csignal SIGINT, but not be terminated! 断开SSH终端:看到变成了守护进程 chunli@Linux:~$ ps aux | grep a.out chunli 2978 0.0 0.1 22704 4208 ? S 10:54 0:00 ./a.out 杀死服务程序: chunli@Linux:~$ ps aux | grep a.out chunli 2952 0.0 0.0 22704 2308 pts/7 S+ 10:50 0:00 ./a.out chunli@Linux:~$ kill -9 2952
本文出自 “魂斗罗” 博客，请务必保留此出处http://990487026.blog.51cto.com/10133282/1889648
原文：http://990487026.blog.51cto.com/10133282/1889648
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