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// $Id$
// ============================================================================
//
// = LIBRARY
// tests
//
// = FILENAME
// MsgQueue_Water_Mark_Test.cpp
//
// = DESCRIPTION
// This is a test makes sure the high/low water mark signaling mechanisms
// work flawlessly.
//
// = AUTHOR
// Nanbor Wang <nanbor@cs.wustl.edu>
//
// ============================================================================
// @@ This test still needs to be clean up.....
#include "test_config.h"
#include "ace/Message_Queue.h"
#include "ace/Task.h"
ACE_RCSID(tests, MsgQueue_Water_Mark_Test, "$Id$")
#if defined(__BORLANDC__) && __BORLANDC__ >= 0x0530
USELIB("..\ace\aced.lib");
//---------------------------------------------------------------------------
#endif /* defined(__BORLANDC__) && __BORLANDC__ >= 0x0530 */
static const size_t worker_threads = 2;
static const char * default_message = "ACE RULES";
static const size_t default_high_water_mark = 20;
static const size_t default_low_water_mark = 10;
static const int iterations = 2 * default_high_water_mark;
class Message_Handler : public ACE_Task<ACE_SYNCH>
{
public:
Message_Handler ();
virtual int svc ();
int consumer ();
int producer ();
int put_message (ACE_Time_Value* timeout = 0);
int get_message (void);
void print_producer_debug_message (void);
private:
const len_, hwm_, lwm_;
ACE_Atomic_Op <ACE_Thread_Mutex, int> role_;
ACE_Barrier mq_full_, mq_low_water_mark_hit_;
};
Message_Handler::Message_Handler ()
: len_ (ACE_OS::strlen (default_message) + 1),
hwm_ (this->len_ * default_high_water_mark),
lwm_ (this->len_ * default_low_water_mark),
role_ (0),
mq_full_ (worker_threads),
mq_low_water_mark_hit_ (worker_threads)
{
this->water_marks (ACE_IO_Cntl_Msg::SET_LWM,
this->lwm_);
this->water_marks (ACE_IO_Cntl_Msg::SET_HWM,
this->hwm_);
}
int
Message_Handler::producer (void)
{
int result = 0;
int i, hwm;
for (hwm = this->hwm_, i = iterations; hwm >= 0 ; hwm -= this->len_, i--)
{
result = this->put_message ();
this->print_producer_debug_message ();
}
ACE_DEBUG ((LM_DEBUG, "(%P|%t) Producer: High water mark hit - "));
this->mq_full_.wait ();
this->put_message ();
ACE_ASSERT (this->msg_queue ()-> message_bytes () <= this->lwm_ + this->len_);
this->print_producer_debug_message ();
for (i--; i >= 0 ; i--)
{
this->put_message ();
this->print_producer_debug_message ();
}
return 0;
}
int
Message_Handler::consumer (void)
{
this->mq_full_.wait ();
ACE_OS::sleep (1);
// Let producer proceed and block in putq.
for (int i = iterations; i >= 0; i--)
{
this->get_message ();
ACE_OS::sleep (0);
}
return 0;
}
int
Message_Handler::get_message (void)
{
ACE_Message_Block *mb;
if (this->getq (mb) == -1)
ACE_ERROR_RETURN ((LM_ERROR, ASYS_TEXT ("%p\n"), ASYS_TEXT ("dequeue_head")), -1);
else
{
ACE_DEBUG ((LM_DEBUG,
ASYS_TEXT ("(%P|%t) Consumer: message size = %3d, ")
ASYS_TEXT ("message count = %3d\n"),
this->msg_queue ()-> message_bytes (),
this->msg_queue ()-> message_count ()));
delete mb;
}
return 0;
}
int
Message_Handler::put_message (ACE_Time_Value *timeout)
{
ACE_Message_Block *mb;
ACE_NEW_RETURN (mb,
ACE_Message_Block (default_message, this->len_),
-1);
return this->putq (mb, timeout);
}
void
Message_Handler::print_producer_debug_message (void)
{
ACE_DEBUG ((LM_DEBUG,
ASYS_TEXT ("(%P|%t) Producer: message size = %3d, ")
ASYS_TEXT ("message count = %3d\n"),
this->msg_queue ()-> message_bytes (),
this->msg_queue ()-> message_count ()));
}
int
Message_Handler::svc (void)
{
int role = this->role_.value ();
this->role_++;
switch (role)
{
case 0:
this->producer ();
break;
case 1:
this->consumer ();
break;
default:
break;
}
return 0;
}
int
main (int, ASYS_TCHAR *[])
{
// ACE_START_TEST (ASYS_TEXT ("MsgQueue_Water_Mark_Test"));
Message_Handler msg_handler;
ACE_DEBUG ((LM_DEBUG, ASYS_TEXT ("High water mark is %d\n")
ASYS_TEXT ("Low water mark is %d\n"),
default_high_water_mark,
default_low_water_mark));
msg_handler.activate (THR_NEW_LWP, worker_threads);
ACE_Thread_Manager::instance ()->wait ();
// ACE_END_TEST;
return 0;
}
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