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diff --git a/docs/tutorials/011/page02.html b/docs/tutorials/011/page02.html deleted file mode 100644 index df8e77e977b..00000000000 --- a/docs/tutorials/011/page02.html +++ /dev/null @@ -1,114 +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>" - -int run_test (int iterations, int threads) -{ - Task task; - - if (task.start (threads) == -1) - { - ACE_ERROR_RETURN ((LM_ERROR, "<font color=green>%p\n</font>", "<font color=green>start</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 = new Block (sizeof (data) + 128); - - <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 = new Block (); - 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; - - (void) 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> |