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// $Id$
// ============================================================================
//
// = LIBRARY
// examples
//
// = FILENAME
// ex2.cpp
//
// = DESCRIPTION
// Example for using <ACE_UPIPE_SAP> and <ACE_Thread> for
// intra-process communication.
//
// = AUTHOR
// Gerhard Lenzer and Douglas C. Schmidt
//
// ============================================================================
#include "ace/UPIPE_Connector.h"
#include "ace/UPIPE_Acceptor.h"
#include "ace/Auto_Ptr.h"
ACE_RCSID(UPIPE_SAP, ex2, "$Id$")
#if defined (ACE_HAS_THREADS)
// Data for testsuite.
static int size = 0;
static int iterations = 0;
static void *
supplier (void *)
{
ACE_UPIPE_Stream s_stream;
ACE_UPIPE_Addr c_addr ("pattern");
ACE_Auto_Basic_Array_Ptr<char> mybuf (new char[size]);
for (int i = 0; i < size; i++)
mybuf[i] = 'a';
ACE_DEBUG ((LM_DEBUG,
"(%t) supplier starting connect thread\n"));
ACE_UPIPE_Connector con;
if (con.connect (s_stream, c_addr) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_UPIPE_Acceptor.connect failed"));
// Test asynchronicity (the "acausal principle" ;-)).
s_stream.enable (ACE_SIGIO);
ACE_Message_Block *mb_p;
for (int j = 0; j < iterations; j++)
{
ACE_NEW_RETURN (mb_p,
ACE_Message_Block (size,
ACE_Message_Block::MB_DATA,
(ACE_Message_Block *) 0,
mybuf.get ()),
0);
if (s_stream.send (mb_p) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
"(%t) %p\n",
"send failed"),
0);
}
ACE_NEW_RETURN (mb_p,
ACE_Message_Block ((size_t) 0),
0);
// Insert a 0-sized message block to signal the other side to shut
// down.
if (s_stream.send (mb_p) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
"(%t) %p\n",
"send failed"),
0);
s_stream.close ();
return 0;
}
static void *
consumer (void *)
{
ACE_UPIPE_Stream c_stream;
// Set the high water mark to size to achieve optimum performance.
int wm = size * iterations;
if (c_stream.control (ACE_IO_Cntl_Msg::SET_HWM,
&wm) == -1)
ACE_DEBUG ((LM_DEBUG,
"set HWM failed\n"));
ACE_UPIPE_Addr serv_addr ("pattern");
// accept will wait up to 4 seconds
ACE_UPIPE_Acceptor acc (serv_addr);
ACE_DEBUG ((LM_DEBUG,
"(%t) consumer spawning the supplier thread\n"));
// Spawn the supplier thread.
if (ACE_Thread_Manager::instance ()->spawn (ACE_THR_FUNC (supplier),
(void *) 0,
THR_NEW_LWP | THR_DETACHED) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
"%p\n",
"spawn"),
0);
ACE_DEBUG ((LM_DEBUG,
"(%t) consumer starting accept\n"));
if (acc.accept (c_stream) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_UPIPE_Acceptor.accept failed"));
// Time measurement.
time_t currsec;
ACE_OS::time (&currsec);
time_t start = (time_t) currsec;
int received_messages = 0;
for (ACE_Message_Block *mb = 0;
c_stream.recv (mb) != -1 && mb->size () != 0;
mb->release ())
received_messages++;
ACE_OS::time (&currsec);
time_t secs = (time_t) currsec - start;
ACE_DEBUG ((LM_DEBUG,
"(%t) Transferred %d blocks of size %d\n"
"The program ran %d seconds\n",
received_messages, size, secs));
c_stream.close ();
return 0;
}
int
main (int argc, char *argv[])
{
size = argc > 1 ? ACE_OS::atoi (argv[1]) : 32;
iterations = argc > 2 ? ACE_OS::atoi (argv[2]) : 16;
// Spawn the two threads.
if (ACE_Thread_Manager::instance ()->spawn (ACE_THR_FUNC (consumer),
(void *) 0,
THR_NEW_LWP | THR_DETACHED) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
"%p\n",
"spawn"),
1);
// Wait for producer and consumer threads to exit.
ACE_Thread_Manager::instance ()->wait ();
return 0;
}
#else
int
main (int, char *[])
{
ACE_ERROR_RETURN ((LM_ERROR,
"threads not supported on this platform\n"),
0);
}
#endif /* ACE_HAS_THREADS */
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