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diff --git a/docs/tutorials/011/page02.html b/docs/tutorials/011/page02.html deleted file mode 100644 index 1e31b4a4694..00000000000 --- a/docs/tutorials/011/page02.html +++ /dev/null @@ -1,117 +0,0 @@ -<HTML> -<HEAD> - <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> - <META NAME="Author" CONTENT="James CE Johnson"> - <TITLE>ACE Tutorial 011</TITLE> -</HEAD> -<BODY TEXT="#000000" BGCOLOR="#FFFFFF" LINK="#000FFF" VLINK="#FF0F0F"> - -<CENTER><B><FONT SIZE=+2>ACE Tutorial 011</FONT></B></CENTER> - -<CENTER><B><FONT SIZE=+2>Passing non-trivial data through an ACE_Message_Queue</FONT></B></CENTER> - - -<P> -<HR WIDTH="100%"> -We'll look first at <A HREF="message_queue.cpp">main()</A>. A large part of this is -the same as before, so I've only commented the changes. -<P> - -<HR WIDTH="100%"> -<PRE> -<font color=red>// $Id$</font> - -<font color=red>/* Most of this is the same as the previous tutorial, so I'll just - point out the differences. */</font> -<font color=blue>#include</font> "<font color=green>task.h</font>" -<font color=blue>#include</font> "<font color=green>block.h</font>" -<font color=blue>#include</font> "<font color=green>data.h</font>" - - -static int -run_test (int iterations, - int threads) - -{ - Task task (threads); - - if (task.open () == -1) - ACE_ERROR_RETURN ((LM_ERROR, - "<font color=green>%p\n</font>", - "<font color=green>open</font>"), - -1); - - <font color=#008888>ACE_OS::sleep</font> (ACE_Time_Value (1)); - - int i; - for (i = 0; i < iterations; ++i) - { - <font color=red>/* Construct a Data object that we'll put into the Queue. */</font> - Data data (i); - - <font color=red>/* Create a block large enough for our Data object as well as a - text message. */</font> - Block *message; - - ACE_NEW_RETURN (message, - Block (sizeof (data) + 128), - -1); - - <font color=red>/* As before, put a text message into the block. */</font> - <font color=#008888>ACE_OS::sprintf</font> (message->wr_ptr (), "<font color=green>This is message %d.</font>", i); - message->wr_ptr (strlen (message->rd_ptr ())); - - *(message->wr_ptr ()) = 0; <font color=red>// Null-terminate the string we just wrote</font> - - message->wr_ptr (1); <font color=red>// Move beyond the NULL</font> - - <font color=red>/* To copy arbitrary data into a message block, we use the - copy() method. Since it wants a 'const char*', we have to - cast our Data pointer. - - Note that copy() will advance the wr_ptr() for us. This means - we don't have to do it ourselves! If you do advance it, it - will be way beyond what you want. */</font> - message->copy ((const char *) &data, - sizeof (data)); - - if (task.putq (message) == -1) - break; - } - - Block *message; - ACE_NEW_RETURN (message, - Block, - -1); - message->msg_type (<font color=#008888>ACE_Message_Block::MB_HANGUP</font>); - task.putq (message); - - task.wait (); - - return 0; -} - -int -main (int argc, char *argv[]) -{ - int iterations = argc > 1 ? atoi (argv[1]) : 4; - int threads = argc > 2 ? atoi (argv[2]) : 2; - - run_test (iterations, - threads); - - ACE_DEBUG ((LM_DEBUG, - "<font color=green>(%P|%t) Application exiting\n</font>")); - - return 0; -} -</PRE> -<HR WIDTH="100%"> -<P> -The new trick here is the use of copy() to copy our abstract data object -into the message block memory. Notice that it's OK to let the Data object -go out of scope at that point since we've got a separate copy. If you've -got something with a non-trivial ctor/dtor then this won't work. We'll address -that in the next tutorial. -<P><HR WIDTH="100%"> -<CENTER>[<A HREF="../online-tutorials.html">Tutorial Index</A>] [<A HREF="page03.html">Continue This Tutorial</A>]</CENTER> |