summaryrefslogtreecommitdiff
path: root/docs/tutorials/011/page03.html
diff options
context:
space:
mode:
Diffstat (limited to 'docs/tutorials/011/page03.html')
-rw-r--r--docs/tutorials/011/page03.html136
1 files changed, 0 insertions, 136 deletions
diff --git a/docs/tutorials/011/page03.html b/docs/tutorials/011/page03.html
deleted file mode 100644
index 690bf01ce0c..00000000000
--- a/docs/tutorials/011/page03.html
+++ /dev/null
@@ -1,136 +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>
-
-
-<HR WIDTH="100%">
-<P>
-
-Our <A HREF="task.cpp">Task</A> object definition. As with message_queue.cpp,
-I've only commented the changes.
-<P>
-
-<HR WIDTH="100%">
-<PRE>
-
-#include "task.h"
-#include "block.h"
-#include "data.h"
-
-Task::Task (void)
-: barrier_ (0)
-{
- ACE_DEBUG ((LM_DEBUG, "(%P|%t) Task ctor 0x%x\n", (void *) this));
-}
-
-Task::~Task (void)
-{
- ACE_DEBUG ((LM_DEBUG, "(%P|%t) Task dtor 0x%x\n", (void *) this));
-
- ACE_Message_Block *message;
- this->getq (message);
- message->release ();
-
- delete barrier_;
-}
-
-int Task::open (int threads)
-{
- barrier_ = new ACE_Barrier (threads);
- return this->activate (THR_NEW_LWP, threads);
-}
-int Task::close (u_long flags)
-{
- ACE_DEBUG ((LM_DEBUG, "(%P|%t) Task close 0x%x\n", (void *) this));
- return inherited::close (flags);
-}
-
-int Task::svc (void)
-{
- this->barrier_->wait ();
-
- ACE_DEBUG ((LM_DEBUG, "(%P|%t) Task 0x%x starts in thread %d\n", (void *) this, ACE_Thread::self ()));
-
- ACE_Message_Block *message;
- while (1)
- {
- if (this->getq (message) == -1)
- {
- ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "getq"), -1);
- }
-
- if (message->msg_type () == ACE_Message_Block::MB_HANGUP)
- {
- this->putq (message);
-
- break;
- }
-
- const char *cp = message->rd_ptr ();
- message->rd_ptr (strlen (cp) + 1); // Don't forget to skip the NULL we
- // inserted
-
- ACE_DEBUG ((LM_DEBUG, "(%P|%t) Block 0x%x contains (%s)\n", (void *) message, cp));
-
- /*
- Create a Data object into which we can extract the message block
- contents.
- */
- Data data;
- /*
- Use the rd_ptr() to access the message block data. Note that we've
- already moved it past the text string in the block.
- */
- ACE_OS::memmove ((char *) &data, message->rd_ptr (), sizeof (data));
- message->rd_ptr (sizeof (data)); // Move the rd_ptr() beyond the data.
-
- /*
- Invoke a couple of method calls on the object we constructed.
- */
- data.who_am_i ();
- data.what_am_i ();
-
- /*
- An alternate approach:
-
- Data * data;
- data = (Data *)message->rd_ptr();
- data->who_am_i();
- data->what_am_i();
- message->rd_ptr(sizeof(Data));
-
- Even though this cuts down on the number of copies & constructions, I'm
- not real fond of it. You can get into trouble in a hurry by treating
- memory blocks as multiple data types...
- */
-
-
- ACE_OS::sleep (ACE_Time_Value (0, 5000));
-
- message->release ();
- }
-
- return (0);
-}
-</PRE>
-<HR WIDTH="100%">
-<P>
-Notice how we had to create a temporary Data object to copy the stuff out
-of the message block? Again, if there were non-trivial ctor/dtors involved
-then this wouldn't work at all.
-<P>
-<HR WIDTH="100%">
-
-<CENTER>[<A HREF="..">Tutorial Index</A>] [<A HREF="page04.html">Continue
-This Tutorial</A>]</CENTER>
-
-</BODY>
-</HTML>