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diff --git a/docs/tutorials/002/page03.html b/docs/tutorials/002/page03.html deleted file mode 100644 index a9c9959a7e5..00000000000 --- a/docs/tutorials/002/page03.html +++ /dev/null @@ -1,192 +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 002</TITLE> -</HEAD> -<BODY TEXT="#000000" BGCOLOR="#FFFFFF" LINK="#000FFF" VLINK="#FF0F0F"> - -<CENTER><B><FONT SIZE=+2>ACE Tutorial 002</FONT></B></CENTER> - -<CENTER><B><FONT SIZE=+2>Creating a Better Server</FONT></B></CENTER> - - -<P> -<HR WIDTH="100%"> - -<P>Now lets take a look at the new <A HREF="handler.h">Logging_Handler</A>: - -<P> -<HR WIDTH="100%"> -<PRE> -<font color=red>// $Id$</font> - -<font color=blue>#ifndef</font> <font color=purple>LOGGING_HANDLER_H</font> -<font color=blue>#define</font> <font color=purple>LOGGING_HANDLER_H</font> - -<font color=blue>#include</font> "<A HREF="../../../ace/INET_Addr.h">ace/INET_Addr.h</A>" - -<font color=blue>#if !defined</font> (<font color=purple>ACE_LACKS_PRAGMA_ONCE</font>) -<font color=blue># pragma</font> <font color=purple>once</font> -<font color=blue>#endif</font> <font color=red>/* ACE_LACKS_PRAGMA_ONCE */</font> - -<font color=blue>#include</font> "<A HREF="../../../ace/SOCK_Stream.h">ace/SOCK_Stream.h</A>" -<font color=blue>#include</font> "<A HREF="../../../ace/Reactor.h">ace/Reactor.h</A>" - -<font color=red>/* Since we used the template to create the acceptor, we don't know if - there is a way to get to the reactor it uses. We'll take the easy - way out and grab the global pointer. (There is a way to get back to - the acceptor's reactor that we'll see later on.) */</font> -extern ACE_Reactor *g_reactor; - -<font color=red>/* This time we're deriving from ACE_Svc_Handler instead of - ACE_Event_Handler. The big reason for this is because it already - knows how to contain a SOCK_Stream and provides all of the method - calls needed by the reactor. The second template parameter is for - some advanced stuff we'll do with later servers. For now, just use - it as is... */</font> -class Logging_Handler : public ACE_Svc_Handler <ACE_SOCK_STREAM, ACE_NULL_SYNCH> -{ -public: - - <font color=red>/* The Acceptor<> template will open() us when there is a new client - connection. */</font> - virtual int open (void *) - { - ACE_INET_Addr addr; - - <font color=red>/* Ask the peer() (held in our baseclass) to tell us the address - of the cient which has connected. There may be valid reasons - for this to fail where we wouldn't want to drop the connection - but I can't think of one. */</font> - if (this->peer ().get_remote_addr (addr) == -1) - return -1; - - <font color=red>/* The Acceptor<> won't register us with it's reactor, so we have - to do so ourselves. This is where we have to grab that global - pointer. Notice that we again use the READ_MASK so that - handle_input() will be called when the client does something. */</font> - if (g_reactor->register_handler (this, - <font color=#008888>ACE_Event_Handler::READ_MASK</font>) == -1) - ACE_ERROR_RETURN ((LM_ERROR, - "<font color=green>(%P|%t) can't register with reactor\n</font>"), - -1); - - <font color=red>/* Here's another new treat. We schedule a timer event. This - particular one will fire in two seconds and then every three - seconds after that. It doesn't serve any useful purpose in our - application other than to show you how it is done. */</font> - else if (g_reactor->schedule_timer (this, - 0, - ACE_Time_Value (2), - ACE_Time_Value (3)) == -1) - ACE_ERROR_RETURN ((LM_ERROR, - "<font color=green>can'(%P|%t) t register with reactor\n</font>"), - -1); - - ACE_DEBUG ((LM_DEBUG, - "<font color=green>(%P|%t) connected with %s\n</font>", - addr.get_host_name ())); - - return 0; - } - - <font color=red>/* This is a matter of style & maybe taste. Instead of putting all - of this stuff into a destructor, we put it here and request that - everyone call destroy() instead of 'delete'. */</font> - virtual void destroy (void) - { - <font color=red>/* Remove ourselves from the reactor */</font> - g_reactor->remove_handler - (this, - <font color=#008888>ACE_Event_Handler::READ_MASK</font> | ACE_Event_Handler::DONT_CALL); - - <font color=red>/* Cancel that timer we scheduled in open() */</font> - g_reactor->cancel_timer (this); - - <font color=red>/* Shut down the connection to the client. */</font> - this->peer ().close (); - - <font color=red>/* Free our memory. */</font> - delete this; - } - - <font color=red>/* If somebody doesn't like us, they will close() us. Actually, if - our open() method returns -1, the Acceptor<> will invoke close() - on us for cleanup. */</font> - virtual int close (u_long flags = 0) - { - <font color=red>/* The ACE_Svc_Handler baseclass requires the <flags> parameter. - We don't use it here though, so we mark it as UNUSED. You can - accomplish the same thing with a signature like handle_input's - below. */</font> - ACE_UNUSED_ARG (flags); - - <font color=red>/* - Clean up and go away. - */</font> - this->destroy (); - return 0; - } - -protected: - - <font color=red>/* Respond to input just like Tutorial 1. */</font> - virtual int handle_input (ACE_HANDLE) - { - char buf[128]; - <font color=#008888>ACE_OS::memset</font> (buf, 0, sizeof (buf)); - - switch (this->peer ().recv (buf, - sizeof buf)) - { - case -1: - ACE_ERROR_RETURN ((LM_ERROR, - "<font color=green>(%P|%t) %p bad read\n</font>", - "<font color=green>client logger</font>"), - -1); - case 0: - ACE_ERROR_RETURN ((LM_ERROR, - "<font color=green>(%P|%t) closing log daemon (fd = %d)\n</font>", - this->get_handle ()), - -1); - default: - ACE_DEBUG ((LM_DEBUG, - "<font color=green>(%P|%t) from client: %s</font>", - buf)); - } - - return 0; - } - - <font color=red>/* When the timer expires, handle_timeout() will be called. The - 'arg' is the value passed after 'this' in the schedule_timer() - call. You can pass in anything there that you can cast to a - void*. */</font> - virtual int handle_timeout (const ACE_Time_Value &tv, - const void *arg) - { - ACE_DEBUG ((LM_DEBUG, - "<font color=green>(%P|%t) handling timeout from this = %u\n</font>", - this)); - return 0; - } - - <font color=red>/* - Clean ourselves up when handle_input() (or handle_timer()) returns -1 - */</font> - virtual int handle_close (ACE_HANDLE, - ACE_Reactor_Mask) - { - this->destroy (); - return 0; - } -}; - -<font color=blue>#endif</font> <font color=red>/* LOGGING_HANDLER_H */</font> -</PRE> -<P><HR WIDTH="100%"> -<CENTER>[<A HREF="../online-tutorials.html">Tutorial Index</A>] [<A HREF="page04.html">Continue This Tutorial</A>]</CENTER> |