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// $Id$
#include "ace/config-lite.h"
#if defined (ACE_HAS_THREADS)
#include "ace/OS_NS_time.h"
#include "ace/OS_NS_unistd.h"
#include "ace/Task.h"
#include "ace/Log_Msg.h"
#include "ace/Signal.h"
class SignalableTask : public ACE_Task<ACE_MT_SYNCH>
{
public:
virtual int handle_signal (int signum,
siginfo_t * = 0,
ucontext_t * = 0)
{
if (signum == SIGUSR1)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%t) received a %S signal\n"),
signum));
handle_alert();
}
return 0;
}
virtual int svc (void)
{
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%t) Starting thread\n")));
while (1)
{
ACE_Message_Block* mb;
ACE_Time_Value tv (0, 1000);
tv += ACE_OS::time (0);
int result = this->getq(mb, &tv);
if (result == -1 && errno == EWOULDBLOCK)
continue;
else
process_message (mb);
}
ACE_NOTREACHED (return 0);
}
void handle_alert ();
void process_message (ACE_Message_Block *mb);
};
void
SignalableTask::process_message (ACE_Message_Block *)
{
return;
}
void
SignalableTask::handle_alert (void)
{
return;
}
// Listing 1 code/ch13
int ACE_TMAIN (int, ACE_TCHAR *[])
{
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%t) Main thread \n")));
SignalableTask handler;
handler.activate (THR_NEW_LWP | THR_JOINABLE, 5);
ACE_Sig_Handler sh;
sh.register_handler (SIGUSR1, &handler);
ACE_OS::sleep (1); // Allow threads to start
for (int i = 0; i < 5; i++)
ACE_OS::kill (ACE_OS::getpid (), SIGUSR1);
handler.wait ();
return 0;
}
// Listing 1
#if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION)
template class ACE_Task<ACE_MT_SYNCH>;
#elif defined (ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA)
pragma instantiate ACE_Task<ACE_MT_SYNCH>;
#endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */
#else
#include "ace/OS_main.h"
#include "ace/OS_NS_stdio.h"
int ACE_TMAIN (int, ACE_TCHAR *[])
{
ACE_OS::puts (ACE_TEXT ("This example requires threads."));
return 0;
}
#endif /* ACE_HAS_THREADS */
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