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diff --git a/docs/tutorials/007/page02.html b/docs/tutorials/007/page02.html deleted file mode 100644 index e9dc3693cce..00000000000 --- a/docs/tutorials/007/page02.html +++ /dev/null @@ -1,142 +0,0 @@ -<!-- $Id$ --> -<HTML> -<HEAD> - <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> - <META NAME="GENERATOR" CONTENT="Mozilla/4.04 [en] (X11; I; Linux 2.0.32 i486) [Netscape]"> - <META NAME="Author" CONTENT="James CE Johnson"> - <META NAME="Description" CONTENT="A first step towards using ACE productively"> - <TITLE>ACE Tutorial 007</TITLE> -</HEAD> -<BODY TEXT="#000000" BGCOLOR="#FFFFFF" LINK="#000FFF" VLINK="#FF0F0F"> - -<CENTER><B><FONT SIZE=+2>ACE Tutorial 007</FONT></B></CENTER> - -<CENTER><B><FONT SIZE=+2>Creating a thread-pool server</FONT></B></CENTER> -<HR> -<P>As usualy, we start with <A HREF="server.cpp">server.cpp</A> -<BR> -<HR WIDTH="100%"> -<PRE> -<font color=red>// $Id$</font> - -<font color=red>/* We try to keep main() very simple. One of the ways we do that is - to push much of the complicated stuff into worker objects. In this - case, we only need to include the acceptor header in our main - source file. We let it worry about the "<font color=green>real work</font>". */</font> - -<font color=blue>#include</font> "<font color=green>client_acceptor.h</font>" - -<font color=red>/* As before, we create a simple signal handler that will set our - finished flag. There are, of course, more elegant ways to handle - program shutdown requests but that isn't really our focus right - now, so we'll just do the easiest thing. */</font> - -static sig_atomic_t finished = 0; -extern "<font color=green>C</font>" void handler (int) -{ - finished = 1; -} - -<font color=red>/* A server has to listen for clients at a known TCP/IP port. The - default ACE port is 10002 (at least on my system) and that's good - enough for what we want to do here. Obviously, a more robust - application would take a command line parameter or read from a - configuration file or do some other clever thing. Just like the - signal handler above, though, that's what we want to focus on, so - we're taking the easy way out. */</font> - -static const u_short PORT = ACE_DEFAULT_SERVER_PORT; - -<font color=red>/* Finally, we get to main. Some C++ compilers will complain loudly - if your function signature doesn't match the prototype. Even - though we're not going to use the parameters, we still have to - specify them. */</font> - -int -main (int argc, char *argv[]) -{ - ACE_UNUSED_ARG(argc); - ACE_UNUSED_ARG(argv); - - <font color=red>/* In our earlier servers, we used a global pointer to get to the - reactor. I've never really liked that idea, so I've moved it into - main() this time. When we get to the Client_Handler object you'll - see how we manage to get a pointer back to this reactor. */</font> - ACE_Reactor reactor; - - <font color=red>/* The acceptor will take care of letting clients connect to us. It - will also arrange for a Client_Handler to be created for each new - client. Since we're only going to listen at one TCP/IP port, we - only need one acceptor. If we wanted, though, we could create - several of these and listen at several ports. (That's what we - would do if we wanted to rewrite inetd for instance.) */</font> - Client_Acceptor peer_acceptor; - - <font color=red>/* Create an ACE_INET_Addr that represents our endpoint of a - connection. We then open our acceptor object with that Addr. - Doing so tells the acceptor where to listen for connections. - Servers generally listen at "<font color=green>well known</font>" addresses. If not, there - must be some mechanism by which the client is informed of the - server's address. - - Note how ACE_ERROR_RETURN is used if we fail to open the acceptor. - This technique is used over and over again in our tutorials. */</font> - if (peer_acceptor.open (ACE_INET_Addr (PORT), &reactor) == -1) - ACE_ERROR_RETURN ((LM_ERROR, - "<font color=green>%p\n</font>", - "<font color=green>open</font>"), - -1); - - <font color=red>/* Install our signal handler. You can actually register signal - handlers with the reactor. You might do that when the signal - handler is responsible for performing "<font color=green>real</font>" work. Our simple - flag-setter doesn't justify deriving from ACE_Event_Handler and - providing a callback function though. */</font> - ACE_Sig_Action sa ((ACE_SignalHandler) handler, SIGINT); - - <font color=red>/* Like ACE_ERROR_RETURN, the ACE_DEBUG macro gets used quite a bit. - It's a handy way to generate uniform debug output from your - program. */</font> - ACE_DEBUG ((LM_DEBUG, - "<font color=green>(%P|%t) starting up server daemon\n</font>")); - - <font color=red>/* This will loop "<font color=green>forever</font>" invoking the handle_events() method of - our reactor. handle_events() watches for activity on any - registered handlers and invokes their appropriate callbacks when - necessary. Callback-driven programming is a big thing in ACE, you - should get used to it. If the signal handler catches something, - the finished flag will be set and we'll exit. Conveniently - enough, handle_events() is also interrupted by signals and will - exit back to the while() loop. (If you want your event loop to - not be interrupted by signals, checkout the <i>restart</i> flag on - the open() method of ACE_Reactor if you're interested.) */</font> - while (!finished) - reactor.handle_events (); - - ACE_DEBUG ((LM_DEBUG, - "<font color=green>(%P|%t) shutting down server daemon\n</font>")); - - return 0; -} - -<font color=blue>#if defined</font> (<font color=purple>ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION</font>) -template class ACE_Acceptor <Client_Handler, ACE_SOCK_ACCEPTOR>; -template class ACE_Svc_Handler<ACE_SOCK_STREAM, ACE_NULL_SYNCH>; -template class ACE_Guard<ACE_Mutex>; -template class ACE_Atomic_Op<ACE_Mutex, int>; -<font color=blue>#elif defined</font> (<font color=purple>ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA</font>) -<font color=blue>#pragma</font> <font color=purple>instantiate</font> ACE_Acceptor <Client_Handler, ACE_SOCK_ACCEPTOR> -<font color=blue>#pragma</font> <font color=purple>instantiate</font> ACE_Svc_Handler<ACE_SOCK_STREAM, ACE_NULL_SYNCH> -<font color=blue>#pragma</font> <font color=purple>instantiate</font> ACE_Guard<ACE_Mutex> -<font color=blue>#pragma</font> <font color=purple>instantiate</font> ACE_Atomic_Op<ACE_Mutex, int> -<font color=blue>#endif</font> <font color=red>/* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */</font> -</PRE> -<HR WIDTH="100%"> - -<P>Hmmm... No change there. Maybe I should leave out comments -on the stuff I don't change. Let's take a look at client_acceptor.h. - -<P> -<P><HR WIDTH="100%"> -<CENTER>[<A HREF="../online-tutorials.html">Tutorial Index</A>] [<A HREF="page03.html">Continue This Tutorial</A>]</CENTER> - |