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diff --git a/docs/tutorials/002/page03.html b/docs/tutorials/002/page03.html deleted file mode 100644 index f5af30830d0..00000000000 --- a/docs/tutorials/002/page03.html +++ /dev/null @@ -1,192 +0,0 @@ -<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> "<font color=green>ace/INET_Addr.h</font>" - -<font color=blue>#if !defined</font> (<font color=purple>ACE_LACKS_PRAGMA_ONCE</font>) -# pragma once -<font color=blue>#endif</font> <font color=red>/* ACE_LACKS_PRAGMA_ONCE */</font> - -<font color=blue>#include</font> "<font color=green>ace/SOCK_Stream.h</font>" -<font color=blue>#include</font> "<font color=green>ace/Reactor.h</font>" - -<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]; - memset (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 _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> |