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//=============================================================================
/**
* @file Reactor_Dispatch_Order_Test_Dev_Poll.cpp
*
* This is a simple test that checks the order of dispatching of
* ACE Reactors. Order should be: timeout, output, and then input.
*
* @author Irfan Pyarali <irfan@cs.wustl.edu>
*/
//=============================================================================
#include "test_config.h"
#include "ace/OS_NS_string.h"
#include "ace/Reactor.h"
#include "ace/Select_Reactor.h"
#include "ace/WFMO_Reactor.h"
#include "ace/Dev_Poll_Reactor.h"
#include "ace/Pipe.h"
#include "ace/ACE.h"
#if defined (ACE_HAS_DEV_POLL) || defined (ACE_HAS_EVENT_POLL)
static const char *message = "Hello there! Hope you get this message";
class Handler : public ACE_Event_Handler
{
public:
Handler (ACE_Reactor &reactor);
~Handler();
int handle_timeout (const ACE_Time_Value &tv,
const void *arg);
int handle_input (ACE_HANDLE fd);
int handle_output (ACE_HANDLE fd);
ACE_HANDLE get_handle () const;
// We need to add MSG_OOB data transfer to this test to check the
// order of when <handle_exception> gets called. I tried with
// Windows 2000 but only one byte of the message came across as
// urgent data. The rest of the data was treated as normal! There
// was some explanation of Microsoft's TCP/IP deals with out-of-band
// data in "Out-of-Band Data and Push Bit in TCP/IP" in the MSDN
// library. However, I did not comprehend that well enough. If
// someone can make this work, please check the order of
// <handle_exception> getting called.
// int handle_exception (ACE_HANDLE fd);
ACE_Pipe pipe_;
int dispatch_order_;
bool ok_; // Constructed and initialized ok
};
Handler::Handler (ACE_Reactor &reactor)
: ACE_Event_Handler (&reactor),
dispatch_order_ (1),
ok_ (false)
{
// Create the pipe.
if (0 != this->pipe_.open ())
ACE_ERROR ((LM_ERROR, ACE_TEXT ("%p\n"), ACE_TEXT ("pipe")));
else
{
// Register for all events.
if (0 != this->reactor ()->register_handler
(this->pipe_.read_handle (),
this,
ACE_Event_Handler::READ_MASK | ACE_Event_Handler::WRITE_MASK))
ACE_ERROR ((LM_ERROR, ACE_TEXT ("%p\n"), ACE_TEXT ("register")));
else
this->ok_ = true;
}
}
Handler::~Handler ()
{
this->pipe_.close ();
}
ACE_HANDLE
Handler::get_handle () const
{
return this->pipe_.read_handle ();
}
int
Handler::handle_timeout (const ACE_Time_Value &,
const void *)
{
int me = this->dispatch_order_++;
if (me != 1)
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("handle_timeout should be #1; it's %d\n"),
me));
else
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Handler::handle_timeout\n")));
return 0;
}
int
Handler::handle_output (ACE_HANDLE)
{
int me = this->dispatch_order_++;
if (me != 2)
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("handle_output should be #2; it's %d\n"),
me));
else
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Handler::handle_output\n")));
// Don't want to continually see writeable; only verify its relative order.
this->reactor ()->mask_ops (this->pipe_.read_handle (),
ACE_Event_Handler::WRITE_MASK,
ACE_Reactor::CLR_MASK);
return 0;
}
int
Handler::handle_input (ACE_HANDLE fd)
{
int me = this->dispatch_order_++;
if (me != 3)
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("handle_input should be #3; it's %d\n"),
me));
char buffer[BUFSIZ];
ssize_t result = ACE::recv (fd, buffer, sizeof buffer);
if (result != ssize_t (ACE_OS::strlen (message)))
ACE_ERROR ((LM_ERROR, ACE_TEXT ("Handler recv'd %b bytes; expected %B\n"),
result, ACE_OS::strlen (message)));
buffer[result] = '\0';
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Handler::handle_input: %C\n"), buffer));
if (ACE_OS::strcmp (buffer, message) != 0)
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("Handler text mismatch; received \"%C\"; ")
ACE_TEXT ("expected \"%C\"\n"),
buffer, message));
this->reactor ()->end_reactor_event_loop ();
return 0;
}
static bool
test_reactor_dispatch_order (ACE_Reactor &reactor)
{
Handler handler (reactor);
if (!handler.ok_)
{
ACE_ERROR ((LM_ERROR, ACE_TEXT ("Error initializing test; abort.\n")));
return false;
}
bool ok_to_go = true;
// This should trigger a call to <handle_input>.
ssize_t result =
ACE::send_n (handler.pipe_.write_handle (),
message,
ACE_OS::strlen (message));
if (result != ssize_t (ACE_OS::strlen (message)))
{
ACE_ERROR ((LM_ERROR, ACE_TEXT ("Handler sent %b bytes; should be %B\n"),
result, ACE_OS::strlen (message)));
ok_to_go = false;
}
// This should trigger a call to <handle_timeout>.
if (-1 == reactor.schedule_timer (&handler,
0,
ACE_Time_Value (0)))
{
ACE_ERROR ((LM_ERROR, ACE_TEXT ("%p\n"), ACE_TEXT ("schedule_timer")));
ok_to_go = false;
}
// Suspend the handlers - only the timer should be dispatched
ACE_Time_Value tv (1);
reactor.suspend_handlers ();
reactor.run_reactor_event_loop (tv);
// only the timer should have fired
if (handler.dispatch_order_ != 2)
{
ACE_ERROR ((LM_ERROR, ACE_TEXT ("Incorrect number fired %d\n"),
handler.dispatch_order_));
ok_to_go = false;
}
// Reset the dispatch_order_ count and schedule another timer
handler.dispatch_order_ = 1;
if (-1 == reactor.schedule_timer (&handler,
0,
ACE_Time_Value (0)))
{
ACE_ERROR ((LM_ERROR, ACE_TEXT ("%p\n"), ACE_TEXT ("schedule_timer")));
ok_to_go = false;
}
// Resume the handlers - things should work now
reactor.resume_handlers ();
if (ok_to_go)
{
reactor.run_reactor_event_loop (tv);
}
if (0 != reactor.remove_handler (handler.pipe_.read_handle (),
ACE_Event_Handler::ALL_EVENTS_MASK |
ACE_Event_Handler::DONT_CALL))
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("remover_handler pipe")));
if (handler.dispatch_order_ != 4)
{
ACE_ERROR ((LM_ERROR, ACE_TEXT ("Incorrect number fired %d\n"),
handler.dispatch_order_));
ok_to_go = false;
}
return ok_to_go;
}
int
run_main (int, ACE_TCHAR *[])
{
ACE_START_TEST (ACE_TEXT ("Reactor_Dispatch_Order_Test_Dev_Poll"));
int result = 0;
ACE_Dev_Poll_Reactor dev_poll_reactor_impl;
ACE_Reactor dev_poll_reactor (&dev_poll_reactor_impl);
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Testing Dev Poll Reactor\n")));
if (!test_reactor_dispatch_order (dev_poll_reactor))
++result;
ACE_END_TEST;
return result;
}
#else
int
run_main (int, ACE_TCHAR *[])
{
ACE_START_TEST (ACE_TEXT ("Reactor_Dispatch_Order_Test_Dev_Poll"));
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("ACE_Dev_Poll_Reactor is UNSUPPORTED on this platform\n")));
ACE_END_TEST;
return 0;
}
#endif /* ACE_HAS_DEV_POLL || ACE_HAS_EVENT_POLL */
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