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// $Id: task_two.cpp 91671 2010-09-08 18:39:23Z johnnyw $
// Exercise more tests for the ACE Tasks. This test can spawn off
// zillions of tasks and then wait for them using both polling and the
// ACE Thread Manager.
#include "ace/OS_main.h"
#include "ace/Task.h"
#include "ace/Service_Config.h"
#include "ace/Atomic_Op.h"
#if defined (ACE_HAS_THREADS)
typedef ACE_Atomic_Op<ACE_Thread_Mutex, int> ATOMIC_INT;
static int zero = 0;
static ATOMIC_INT task_count (zero);
static ATOMIC_INT max_count (zero);
static ATOMIC_INT wait_count (zero);
static int n_threads = 0;
// Default number of tasks.
static const int default_threads = ACE_DEFAULT_THREADS;
// Default number of times to run the test.
static const int default_iterations = 1000;
class Task_Test : public ACE_Task<ACE_MT_SYNCH>
{
public:
//FUZZ: disable check_for_lack_ACE_OS
virtual int open (void *args = 0);
virtual int close (u_long flags = 0);
//FUZZ: enable check_for_lack_ACE_OS
virtual int svc (void);
private:
static ACE_Thread_Mutex lock_;
};
ACE_Thread_Mutex Task_Test::lock_;
int
Task_Test::open (void *)
{
ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, Task_Test::lock_, -1);
task_count++;
ACE_DEBUG ((LM_DEBUG, "(%t) creating Task_Test, task count = %d\n",
task_count.value ()));
return this->activate (THR_BOUND);
}
int
Task_Test::close (u_long)
{
ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, Task_Test::lock_, -1);
task_count--;
ACE_DEBUG ((LM_DEBUG, "(%t) destroying Task_Test, task count = %d\n",
task_count.value ()));
wait_count--;
return 0;
}
int
Task_Test::svc (void)
{
wait_count++;
max_count++;
ACE_DEBUG ((LM_DEBUG, "(%t) svc: waiting\n"));
for (;;)
if (max_count >= n_threads)
break;
else
ACE_Thread::yield ();
ACE_DEBUG ((LM_DEBUG, "(%t) svc: finished waiting\n"));
return 0;
}
int
ACE_TMAIN (int argc, ACE_TCHAR *argv[])
{
n_threads = argc > 1 ? ACE_OS::atoi (argv[1]) : default_threads;
int n_iterations = argc > 2 ? ACE_OS::atoi (argv[2]) : default_iterations;
Task_Test **task_array = new Task_Test *[n_threads];
for (int i = 1; i <= n_iterations; i++)
{
ACE_DEBUG ((LM_DEBUG, "(%t) iteration = %d, max_count %d\n",
i, max_count.value ()));
max_count = 0;
ACE_DEBUG ((LM_DEBUG, "(%t) starting %d task%s\n",
n_threads, n_threads == 1 ? "" : "s"));
// Launch the new tasks.
for (int j = 0; j < n_threads; j++)
{
task_array[j] = new Task_Test;
// Activate the task, i.e., make it an active object.
task_array[j]->open ();
}
// Wait for initialization to kick in.
while (max_count == 0)
ACE_Thread::yield ();
ACE_DEBUG ((LM_DEBUG, "(%t) waiting for threads to finish\n"));
// Wait for the threads to finish this iteration.
while (max_count != n_threads && wait_count != 0)
ACE_Thread::yield ();
ACE_DEBUG ((LM_DEBUG,
"(%t) iteration %d finished, max_count %d, wait_count %d, waiting for tasks to exit\n",
i, max_count.value (), wait_count.value ()));
// Wait for all the tasks to exit.
ACE_Thread_Manager::instance ()->wait ();
// Delete the existing tasks.
for (int k = 0; k < n_threads; k++)
delete task_array[k];
}
delete [] task_array;
ACE_DEBUG ((LM_DEBUG, "(%t) shutting down the test\n"));
return 0;
}
#else
int
ACE_TMAIN (int, ACE_TCHAR *[])
{
ACE_ERROR ((LM_ERROR, "threads not supported on this platform\n"));
return 0;
}
#endif /* ACE_HAS_THREADS */
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