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/**
* $Id$
*
* Reactor examples
*
* Timers & state data
*/
#include "ace/OS_NS_time.h"
#include "ace/Log_Msg.h"
#include "ace/Reactor.h"
#include "ace/Event_Handler.h"
// Listing 0 code/ch07
class TemperatureSensor
{
public:
TemperatureSensor (const char *location)
: location_(location),
count_(0),
temperature_(0.0)
// ...
{ }
const char *location () const
{
return this->location_;
}
int querySensor (void)
{
// ...
return ++this->count_;
}
float temperature (void) const
{
return this->temperature_;
}
private:
const char *location_;
int count_;
float temperature_;
// ...
};
// Listing 0
// Listing 1 code/ch07
class TemperatureQueryHandler : public ACE_Event_Handler
{
public:
TemperatureQueryHandler ()
: ACE_Event_Handler(),
counter_(0),
averageTemperature_(0.0)
// ...
{
}
int handle_timeout (const ACE_Time_Value ¤t_time,
const void *arg)
{
time_t epoch = ((timespec_t)current_time).tv_sec;
const TemperatureSensor *const_sensor =
ACE_reinterpret_cast (const TemperatureSensor *, arg);
TemperatureSensor *sensor =
ACE_const_cast (TemperatureSensor *, const_sensor);
int queryCount = sensor->querySensor ();
this->updateAverageTemperature (sensor);
ACE_DEBUG ((LM_INFO,
ACE_TEXT ("%s\t")
ACE_TEXT ("%d/%d\t")
ACE_TEXT ("%.2f/%.2f\t")
ACE_TEXT ("%s\n"),
sensor->location (),
++this->counter_,
queryCount,
this->averageTemperature_,
sensor->temperature (),
ACE_OS::ctime(&epoch)));
return 0;
}
private:
void updateAverageTemperature (TemperatureSensor *)
{
// ...
}
int counter_;
float averageTemperature_;
};
// Listing 1
// Create a SIGINT handler so that we can exit
// the program politely
class SigintHandler : public ACE_Event_Handler
{
public:
int handle_signal (int signum, siginfo_t * = 0,
ucontext_t * = 0)
{
if (signum == SIGINT)
{
ACE_Reactor::instance ()->end_reactor_event_loop ();
}
return 0;
}
};
int ACE_TMAIN (int, ACE_TCHAR *[])
{
// Listing 2 code/ch07
TemperatureQueryHandler *temperatureMonitor =
new TemperatureQueryHandler ();
// Listing 2
ACE_Time_Value initialDelay (3);
ACE_Time_Value intervalOne (5);
// Listing 3 code/ch07
TemperatureSensor *sensorOne =
new TemperatureSensor ("Kitchen");
ACE_Reactor::instance ()->schedule_timer (temperatureMonitor,
sensorOne,
initialDelay,
intervalOne);
// Listing 3
ACE_Time_Value intervalTwo (4);
// Listing 4 code/ch07
TemperatureSensor *sensorTwo =
new TemperatureSensor ("Foyer");
ACE_Reactor::instance ()->schedule_timer (temperatureMonitor,
sensorTwo,
initialDelay,
intervalTwo);
// Listing 4
SigintHandler *handleExit = new SigintHandler ();
ACE_Reactor::instance ()->register_handler (SIGINT,
handleExit);
ACE_Reactor::instance ()->run_reactor_event_loop ();
return 0;
}
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