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ACE自适配通信环境(ADAPTIVE Communication Environment)是可以自由使用、开放源码的面向对象(OO)框架(Framework),在其中实现了许多用于并发通信软件的核心模式。ACE提供了一组丰富的可复用C++ Wrapper Facade(包装外观)和框架组件,可跨越多种平台完成通用的通信软件任务,其中包括:事件多路分离和事件处理器分派、信号处理、服务初始化、进程间通信、共享内存管理、消息路由、分布式服务动态(重)配置、并发执行和同步,等等。ACE的目标用户是高性能和实时通信服务和应用的开发者。它简化了使用进程间通信、事件多路分离、显式动态链接和并发的OO网络应用和服务的开发。此外,通过服务在运行时与应用的动态链接,ACE还使系统的配置和重配置得以自动化。
我最近采用ACE实现了一个通用的C/S架构通信程序,具体实现简述如下:1. 服务器端:一个采用领导者/跟随者模型的线程池不断地接受从多个客户端发来的消息,并放入一个消息队列,然后又有一个采用半同步/半异步模型的线程池不断地从这个消息队列中取出消息进行处理。
服务器端代码如下:(共10个文件)-
- ACE_Server.cpp
- #include "ace/SOCK_Acceptor.h"
- #include "ace/Acceptor.h"
- #include "ace/Thread_Manager.h"
- #include "ace/TP_Reactor.h"
- #include "ace/Reactor.h"
- #include "ace/INET_Addr.h"
- #include "ace/OS.h"
- #include "Request_Handler.h"
- #include "Server.h"
- #include "Constants.h"
- using namespace ACE_Server;
- int main(int argc, char *argv[])
- {
- ACE_TP_Reactor tp_reactor;
- ACE_Reactor reactor(&tp_reactor, 1);
- ACE_Reactor::instance(&reactor, 1);
- ACE_Acceptor<Request_Handler, ACE_SOCK_ACCEPTOR> acceptor;
- ACE_INET_Addr addr(SERVER_PORT_NUM);
- if(acceptor.open(addr) == -1)
- return -1;
- Server server_tp;
- server_tp.activate(THR_NEW_LWP | THR_JOINABLE, SERVER_THREAD_POOL_SIZE);
- ACE_Thread_Manager::instance()->wait();
- return 0;
- }
- //Constants.h
- #ifndef __CONSTANTS_H_
- #define __CONSTANTS_H_
- namespace ACE_Server
- {
- static const size_t SERVER_THREAD_POOL_SIZE = 5; //进行数据接收的线程池大小
- static const size_t TASK_THREAD_POOL_SIZE = 5; //进行数据处理的线程池大小
- static const size_t BUFFER_SIZE = 4096; //数据缓冲区大小
- static const size_t SERVER_PORT_NUM = 10101; //服务器的通信端口号
- }
- #endif
- //Server.h
- #ifndef __SERVER_H_
- #define __SERVER_H_
- #include "ace/Task.h"
- namespace ACE_Server
- {
- class Server: public ACE_Task_Base
- {
- public:
- virtual int svc(void);
- };
- }
- #endif
- //Server.cpp
- #include "ace/Reactor.h"
- #include "Server.h"
- namespace ACE_Server
- {
- int Server::svc(void)
- {
- int result = ACE_Reactor::instance()->run_reactor_event_loop();
- if(result == -1)
- return -1;
- return 0;
- }
- }
- //Request_Handler.h
- #ifndef __REQUEST_HANDLER_H_
- #define __REQUEST_HANDLER_H_
- #include "ace/Svc_Handler.h"
- #include "ace/SOCK_Stream.h"
- #include "ace/Synch.h"
- #include "ace/Thread_Manager.h"
- #include "Task_Manager.h"
- namespace ACE_Server
- {
- class Request_Handler: public ACE_Svc_Handler<ACE_SOCK_STREAM, ACE_MT_SYNCH>
- {
- public:
- Request_Handler(ACE_Thread_Manager *thr_mgr = 0);
- protected:
- virtual int handle_input(ACE_HANDLE fd = ACE_INVALID_HANDLE);
- private:
- static Task_Manager task_mgr;
- };
- }
- #endif
- //Request_Handler.cpp
- #include "ace/OS.h"
- #include "ace/Message_Block.h"
- #include "ace/Thread_Manager.h"
- #include "ace/Svc_Handler.h"
- #include "ace/SOCK_Stream.h"
- #include "ace/Synch.h"
- #include "ace/Reactor.h"
- #include "Request_Handler.h"
- #include "Task_Manager.h"
- #include "Constants.h"
- namespace ACE_Server
- {
- Task_Manager Request_Handler::task_mgr;
- Request_Handler::Request_Handler(ACE_Thread_Manager *thr_mgr): ACE_Svc_Handler<ACE_SOCK_STREAM, ACE_MT_SYNCH> (thr_mgr)
- {
- this->reactor(ACE_Reactor::instance());
- task_mgr.activate();
- }
- int Request_Handler::handle_input(ACE_HANDLE fd)
- {
- char length[4] = {0};
- if(this->peer().recv_n(length, 4) == 4)
- {
- size_t msg_len = 0;
- for(int i = 0; i < 4; i++)
- {
- msg_len |= (size_t)length[i] << (8 * i);
- }
- char msg[BUFFER_SIZE] = {0};
- if(this->peer().recv_n(msg, msg_len) == msg_len)
- {
- ACE_Message_Block *mb = NULL;
- ACE_NEW_RETURN(mb, ACE_Message_Block(msg_len, ACE_Message_Block::MB_DATA, 0, msg), -1);
- mb->wr_ptr(msg_len);
- //
- task_mgr.putq(mb);
- return 0;
- }
- }
- return -1;
- }
- }
- //Task_Manager.h
- #ifndef __TASK_MANAGER_H_
- #define __TASK_MANAGER_H_
- #include "ace/Task.h"
- #include "ace/Synch.h"
- namespace ACE_Server
- {
- class Task_Manager: public ACE_Task<ACE_MT_SYNCH>
- {
- public:
- virtual int svc(void);
- };
- }
- #endif
- //Task_Manager.cpp
- #include "ace/Message_Block.h"
- #include "Task_Manager.h"
- #include "Task_Worker.h"
- #include "Constants.h"
- namespace ACE_Server
- {
- int Task_Manager::svc(void)
- {
- Task_Worker task_tp;
- task_tp.activate(THR_NEW_LWP | THR_JOINABLE, TASK_THREAD_POOL_SIZE);
- while(1)
- {
- ACE_Message_Block *mb = NULL;
- if(this->getq(mb) < 0)
- {
- task_tp.msg_queue()->deactivate();
- task_tp.wait();
- }
- //
- task_tp.putq(mb);
- }
- return 0;
- }
- }
- //Task_Worker.h
- #ifndef __TASK_WORKER_H_
- #define __TASK_WORKER_H_
- #include "ace/Task.h"
- #include "ace/Synch.h"
- #include "ace/Message_Block.h"
- namespace ACE_Server
- {
- class Task_Worker: public ACE_Task<ACE_MT_SYNCH>
- {
- public:
- virtual int svc(void);
- private:
- void process_task(ACE_Message_Block *mb);
- };
- }
- #endif
- //Task_Worker.cpp
- #include "ace/OS.h"
- #include "ace/Message_Block.h"
- #include "Task_Worker.h"
- namespace ACE_Server
- {
- int Task_Worker::svc(void)
- {
- while(1)
- {
- ACE_Message_Block *mb = NULL;
- if(this->getq(mb) == -1)
- {
- continue;
- }
- process_task(mb);
- }
- return 0;
- }
- void Task_Worker::process_task(ACE_Message_Block *mb)
- {
- //进行数据处理,数据的起始地址为mb->rd_ptr(),长度为mb->length()
- ACE_DEBUG((LM_DEBUG, ACE_TEXT("(%t) Processing task: %s length %d\n"), mb->rd_ptr(), mb->length()));
- ACE_OS::sleep(3); //模拟数据处理过程
- mb->release();
- }
- }
- //2. 客户端:应用程序将需要发送的若干消息放入一个消息队列,然后激活一个线程来发送所有消息到服务器端。
- //客户端代码如下:(共4个文件)
- //ACE_Client.cpp
- #include "Client.h"
- using namespace ACE_Client;
- int main(int argc, char *argv[])
- {
- Client client("localhost"); //服务器的IP地址或者服务器名称
- for(int i = 0; i < 5; i++)
- {
- char *task1 = "Is it a good day?"; //第1个task的数据
- size_t task1_len = 18; //第1个task的数据长度
- char *task1_t; //无需修改
- ACE_NEW_RETURN(task1_t, char[task1_len + 4], -1); //无需修改
- client.put_task(task1_t, task1, task1_len); //无需修改
- char *task2 = "Yeah, it really is."; //第2个task的数据
- size_t task2_len = 20; //第2个task的数据长度
- char *task2_t; //无需修改
- ACE_NEW_RETURN(task2_t, char[task2_len + 4], -1); //无需修改
- client.put_task(task2_t, task2, task2_len); //无需修改
- client.send_tasks(); //将上面的task全部发到服务器
- delete [] task1_t; //释放task1的内存
- delete [] task2_t; //释放task2的内存
- }
- return 0;
- }
- //Constants.h
- #ifndef __CONSTANTS_H_
- #define __CONSTANTS_H_
- #include "ace/Time_Value.h"
- namespace ACE_Client
- {
- static const size_t BUFFER_SIZE = 4096; //数据缓冲区大小
- static const size_t SERVER_PORT_NUM = 10101; //服务器的通信端口号
- static const ACE_Time_Value TIME_INTERVAL(0, 1000000); //两次数据发送之间的时间间隔(0 s + 1000000 us = 1 s)
- }
- #endif
- //Client.h
- #ifndef __CLIENT_H_
- #define __CLIENT_H_
- #include "ace/Task.h"
- #include "ace/INET_Addr.h"
- #include "ace/Synch.h"
- namespace ACE_Client
- {
- class Client: public ACE_Task<ACE_NULL_SYNCH>
- {
- public:
- Client(char *server);
- virtual int svc(void);
- char *put_task(char *msg_t, char *msg_s, size_t msg_len);
- void send_tasks(void);
- private:
- ACE_INET_Addr addr;
- };
- }
- #endif
- //Client.cpp
- #include "ace/OS.h"
- #include "ace/SOCK_Stream.h"
- #include "ace/SOCK_Connector.h"
- #include "ace/Message_Block.h"
- #include "ace/Thread_Manager.h"
- #include "ace/INET_Addr.h"
- #include "Constants.h"
- #include "Client.h"
- namespace ACE_Client
- {
- Client::Client(char *server)
- {
- addr = ACE_INET_Addr(SERVER_PORT_NUM, server);
- }
- int Client::svc(void)
- {
- ACE_SOCK_Stream stream;
- ACE_SOCK_Connector connector;
- if(connector.connect(stream, addr) < 0)
- {
- return -1;
- }
- else
- {
- while(1)
- {
- ACE_Message_Block *mb = NULL;
- if(this->getq(mb) == -1)
- {
- break;
- }
- ACE_DEBUG((LM_DEBUG, ACE_TEXT("(%t) Sending %s\n"), &(mb->rd_ptr()[4])));
- stream.send_n(mb->rd_ptr(), mb->length());
- mb->release();
- ACE_OS::sleep(TIME_INTERVAL);
- }
- }
- stream.close();
- return 0;
- }
- char *Client::put_task(char *msg_t, char *msg_s, size_t msg_len)
- {
- for(int i = 0; i < 4; i++)
- {
- msg_t[i] = (char)((msg_len >> (8 * i)) & 0xff);
- }
- ACE_OS::memcpy(&msg_t[4], msg_s, msg_len);
- ACE_Message_Block *mb = NULL;
- ACE_NEW_RETURN(mb, ACE_Message_Block(msg_len + 4, ACE_Message_Block::MB_DATA, 0, msg_t), 0);
- mb->wr_ptr(msg_len + 4);
- this->putq(mb);
- return msg_t;
- }
- void Client::send_tasks(void)
- {
- this->activate();
- ACE_Thread_Manager::instance()->wait();
- }
- }
复制代码
全部完毕,希望大家能够喜欢:)
作者Blog:[url=http://blog.csdn.net/chenruichuan/]http://blog.csdn.net/chenruichuan/[/url]
注:为了看的更清楚,版主修改了文本。 |
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