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// ============================================================================
// $Id$
//
// = LIBRARY
// examples
//
// = FILENAME
// test_remove_handler.cpp
//
// = DESCRIPTION
// Tests the ReactorEx's ability to handle simultaneous events. If
// you pass anything on the command-line, then each handler
// requests to be removed from the ReactorEx after each event.
// This has a funky effect on the order in which handlers are
// serviced. So, if no parameters are passed in, the handlers
// should be serviced 1 through MAXIMUM_WAIT_OBJECTS. If handlers
// to request to be removed as signals occur, they will be serviced
// 1, MAX, MAX-1, ..., 2. This is because of a ReactorEx
// bookkeeping optimization.
//
// = AUTHOR
// Tim Harrison
//
// ============================================================================
#include "ace/ReactorEx.h"
#include "ace/Service_Config.h"
#include "ace/Synch.h"
class Event_Handler : public ACE_Event_Handler
// = TITLE
// Generic Event Handler.
//
// = DESCRIPTION
//
// Creates event. Registers with ReactorEx. Signals event. If
// created with -close_down- it returns -1 from handle signal.
{
public:
Event_Handler (int event_number,
int close_down)
: event_number_ (event_number),
close_down_ (close_down)
{
ACE_Service_Config::reactorEx ()->register_handler (this,
this->event_.handle ());
this->event_.signal ();
}
virtual int handle_signal (int index, siginfo_t *, ucontext_t *)
{
ACE_DEBUG ((LM_DEBUG, "event %d occured.\n", event_number_));
if (this->close_down_)
return -1;
else
return 0;
}
virtual int handle_close (ACE_HANDLE, ACE_Reactor_Mask)
{
// ACE_DEBUG ((LM_DEBUG, "event handler %d closed.\n", event_number_));
delete this;
return 0;
}
virtual ACE_HANDLE get_handle (void) const
{
return event_.handle ();
}
private:
int event_number_;
// Our event number.
int close_down_;
// Shall we close down or not.
ACE_Event event_;
// Signaled to shut down the handler.
};
int
main (int argc, char *argv[])
{
int close_down = argc > 1 ? 1 : 0;
for (int i = 0; i < ACE_ReactorEx::MAX_SIZE; i++)
new Event_Handler (i, close_down);
ACE_Service_Config::reactorEx ()->handle_events ();
return 42;
}
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