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// $Id: Async_Cancel.cpp 94362 2011-08-04 15:54:26Z mesnier_p $
#include "ace/OS_NS_unistd.h"
#include "ace/Task.h"
#include "ace/Log_Msg.h"
#if defined (ACE_HAS_PTHREADS) && !defined (ACE_LACKS_PTHREAD_CANCEL)
// Only works on Pthreads...
// Listing 1 code/ch13
class CanceledTask : public ACE_Task<ACE_MT_SYNCH>
{
public:
virtual int svc (void)
{
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%t) Starting thread\n")));
if (this->set_cancel_mode () < 0)
return -1;
while (1)
{
// Put this thread in a compute loop.. no
// cancellation points are available.
}
}
int set_cancel_mode (void)
{
cancel_state new_state;
// Set the cancel state to asynchronous and enabled.
new_state.cancelstate = PTHREAD_CANCEL_ENABLE;
new_state.canceltype = PTHREAD_CANCEL_ASYNCHRONOUS;
if (ACE_Thread::setcancelstate (new_state, 0) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("cancelstate")), -1);
return 0;
}
};
// Listing 1
// Listing 2 code/ch13
int ACE_TMAIN (int, ACE_TCHAR *[])
{
CanceledTask task;
task.activate ();
ACE_OS::sleep (1);
ACE_Thread_Manager::instance ()->cancel_task (&task, 1);
task.wait ();
return 0;
}
// Listing 2
#else /* ACE_HAS_PTHREADS */
int ACE_TMAIN (int, ACE_TCHAR *[])
{
ACE_OS::puts ("This example works on Pthreads platforms.\n");
return 0;
}
#endif /* ACE_HAS_PTHREADS */
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