<HTML> <!-- ex05.html,v 1.2 2000/06/04 22:02:08 brunsch Exp --> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Author" CONTENT="Ambreen Ilyas"> <META NAME="GENERATOR" CONTENT="Mozilla/4.05 [en] (X11; I; SunOS 5.5.1 sun4u) [Netscape]"> <TITLE>Example 5</TITLE> </HEAD> <BODY> <FONT COLOR="#CC0000">/////////////////////////////////////////////////////////////////////////////////////////////////////////////////</FONT> <BR><FONT COLOR="#CC0000">//// This example is from the ACE Programmers Guide.</FONT> <BR><FONT COLOR="#CC0000">//// Chapter: "The Acceptor/Connector" (Connection Initialization)</FONT> <BR><FONT COLOR="#CC0000">//// For details please see the guide at</FONT> <BR><FONT COLOR="#CC0000">//// http://www.cs.wustl.edu/~schmidt/ACE.html</FONT> <BR><FONT COLOR="#CC0000">//// AUTHOR: Umar Syyid (usyyid@hns.com)</FONT> <BR><FONT COLOR="#CC0000">//// and Ambreen Ilyas (ambreen@bitsmart.com)</FONT> <BR><FONT COLOR="#CC0000">/////////////////////////////////////////////////////////////////////////////////////////////////////////////</FONT> <P><FONT COLOR="#CC0000">//Example 5</FONT> <BR><FONT COLOR="#000099">#include</FONT><FONT COLOR="#006600"> "ace/Reactor.h"</FONT> <BR><FONT COLOR="#000099">#include</FONT> "<FONT COLOR="#006600">ace/Svc_Handler.h"</FONT> <BR><FONT COLOR="#000099">#include</FONT> "<FONT COLOR="#006600">ace/Acceptor.h"</FONT> <BR><FONT COLOR="#000099">#include</FONT> <FONT COLOR="#006600">"ace/Synch.h"</FONT> <BR><FONT COLOR="#000099">#include</FONT> <FONT COLOR="#006600">"ace/SOCK_Acceptor.h"</FONT> <BR><FONT COLOR="#000099">#include</FONT> <FONT COLOR="#006600">"ace/Thread.h"</FONT> <P><FONT COLOR="#FF0000">//Add our own Reactor singleton</FONT> <BR>typedef ACE_Singleton<ACE_Reactor,ACE_Null_Mutex> Reactor; <BR><FONT COLOR="#FF0000">//Create an Acceptor</FONT> <BR>typedef ACE_Acceptor<MyServiceHandler,ACE_SOCK_ACCEPTOR> Acceptor; <BR><FONT COLOR="#FF0000">//Create a Connector</FONT> <BR>typedef ACE_Connector<MyServiceHandler,ACE_SOCK_CONNECTOR> Connector; <P>class MyServiceHandler: <BR>public ACE_Svc_Handler<ACE_SOCK_STREAM,ACE_NULL_SYNCH>{ <BR>public: <BR><FONT COLOR="#FF0000"> //Used by the two threads "globally" to determine their peer stream</FONT> <BR> static ACE_SOCK_Stream* Peer; <P><FONT COLOR="#FF0000">//Thread ID used to identify the threads</FONT> <BR> ACE_thread_t t_id; <P>int open(void*){ <BR> ACE_DEBUG((LM_DEBUG,"Acceptor: received new connection\n")); <P><FONT COLOR="#FF0000">//Register with the reactor to remember this handlle</FONT> <BR> Reactor::instance() ->register_handler(this,ACE_Event_Handler::READ_MASK); <P><FONT COLOR="#FF0000">//Determine the peer stream and record it globally</FONT> <BR> MyServiceHandler::Peer=&peer(); <BR> <BR> <FONT COLOR="#FF0000">//Spawn new thread to send string every second</FONT> <BR> ACE_Thread::spawn((ACE_THR_FUNC)send_data,0,THR_NEW_LWP,&t_id); <BR> <BR> <FONT COLOR="#FF0000"> //keep the service handler registered by returning 0 to the reactor</FONT> <BR> return 0; <BR> } <BR> <P>static void* send_data(void*){ <BR> while(1){ <BR> ACE_DEBUG((LM_DEBUG,"Hello World\n")); <BR> Peer->send_n("Hello World",sizeof("Hello World")); <BR> <BR> <FONT COLOR="#FF0000">//Go to sleep for a second before sending again</FONT> <BR> ACE_OS::sleep(1); <BR> } <BR> return 0; <BR> } <BR> <P>int handle_input(ACE_HANDLE){ <BR> char* data= new char[12]; <BR> <BR> <FONT COLOR="#FF0000"> //Check if peer aborted the connection</FONT> <BR> if(Peer.recv_n(data,12)==0){ <BR> ACE_DEBUG((LM_DEBUG,"Peer probably aborted connection\n")); <BR> ACE_Thread::cancel(t_id); <FONT COLOR="#CC0000">//kill sending thread ..</FONT> <BR> return -1; <FONT COLOR="#FF0000">//de-register from the Reactor.</FONT> <BR> } <P> <FONT COLOR="#FF0000"> //Show what you got..</FONT> <BR> ACE_DEBUG((LM_DEBUG,"<< %s\n",data)); <BR> <BR> <FONT COLOR="#FF0000">//keep yourself registered</FONT> <BR> return 0; <BR> } <BR>}; <P><FONT COLOR="#FF0000">//Global stream identifier used by both threads</FONT> <BR>ACE_SOCK_Stream * MyServiceHandler::Peer=0; <BR> <P>void main_accept(){ <BR> ACE_INET_Addr addr(PORT_NO); <BR> Acceptor myacceptor(addr,Reactor::instance()); <BR> while(1) <BR> Reactor::instance()->handle_events(); <P> return 0; <BR> } <P>void main_connect(){ <BR> ACE_INET_Addr addr(PORT_NO,HOSTNAME); <BR> Connector myconnector; <BR> myconnector.connect(my_svc_handler,addr); <BR> while(1) <BR> Reactor::instance()->handle_events(); <P> } <BR> <P>int main(int argc, char* argv[]){ <BR><FONT COLOR="#FF0000"> // Use ACE_Get_Opt to parse and obtain arguments and then call the</FONT> <BR> <FONT COLOR="#FF0000">// approriate function for accept or connect.</FONT> <BR><FONT COLOR="#CC0000">//...</FONT> <BR>} <BR> <BR> <A HREF="ex06.html">Next Example</A> </BODY> </HTML>