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// $Id$
// ============================================================================
//
// = LIBRARY
// examples/Threads/
//
// = FILENAME
// task_five.cpp
//
// = DESCRIPTION
// Stress testing thread creation and thread cancellation using
// ACE_Task.
//
// = AUTHOR
// Author: Detlef Becker <Detlef.Becker@med.siemens.de>
//
// ============================================================================
#include "ace/OS_main.h"
#include "ace/Thread_Manager.h"
#include "ace/Task.h"
#include "ace/OS_NS_unistd.h"
ACE_RCSID(Threads, task_five, "$Id$")
static const int DEFAULT_TASKS = 100;
static const int DEFAULT_ITERATIONS = 10;
// Default stack size
static size_t default_stack_size =
#if defined (ACE_WIN32)
0;
#else
8192;
#endif /* ACE_WIN32 */
u_int loop_count = 0;
u_int error_count = 0;
class Test_Task : public ACE_Task<ACE_SYNCH>
{
public:
Test_Task (ACE_Thread_Manager * = ACE_Thread_Manager::instance ());
~Test_Task (void) {};
int open (void * = 0);
int svc (void);
int close (u_long);
int shutdown (void);
int synch (void);
};
Test_Task::Test_Task (ACE_Thread_Manager *thrmgr)
: ACE_Task<ACE_SYNCH> (thrmgr)
{
}
int
Test_Task::open (void *)
{
return this->activate (0,
1,
0,
ACE_DEFAULT_THREAD_PRIORITY,
-1,
0,
0,
0,
&default_stack_size);
}
int
Test_Task::svc (void)
{
while (thr_mgr_->testcancel (ACE_OS::thr_self ()) == 0)
// Sleep for 350 msecs.
ACE_OS::sleep (ACE_Time_Value (0, 350000));
return 0;
}
int
Test_Task::close (u_long)
{
ACE_DEBUG ((LM_DEBUG, "(%t) closing down\n"));
return 0;
}
int
Test_Task::shutdown (void)
{
return thr_mgr_->cancel_grp (grp_id_);
}
int
Test_Task::synch (void)
{
return thr_mgr_->wait_grp (grp_id_);
}
static void
work (ACE_Thread_Manager *thr_mgr,
int n_tasks,
size_t stack_size)
{
ACE_UNUSED_ARG (stack_size);
int i;
Test_Task *task_array;
ACE_NEW (task_array,
Test_Task[n_tasks]);
ACE_DEBUG ((LM_DEBUG,
"Opening Tasks, loop count = %d, error count = %d\n",
loop_count,
error_count));
for (i = 0;
i < n_tasks;
i++)
task_array[i].open ();
ACE_OS::sleep (1);
ACE_DEBUG ((LM_DEBUG,
"Cancelling Tasks, loop count = %d, error count = %d\n",
loop_count,
error_count));
for (i = 0; i < n_tasks; i++)
task_array[i].shutdown ();
ACE_DEBUG ((LM_DEBUG,
"Synching Tasks, loop count = %d, error count = %d\n",
loop_count,
error_count));
for (i = 0;
i < n_tasks; i++)
if (-1 == task_array[i].synch ())
{
ACE_ERROR ((LM_ERROR,
"Error in synch! loop count = %d, error count = %d\n",
loop_count,
error_count));
error_count++;
}
ACE_DEBUG ((LM_DEBUG,
"thr_mgr->wait ();! loop count = %d, error count = %d\n",
loop_count,
error_count));
// Wait for all the threads to finish.
thr_mgr->wait ();
delete [] task_array;
loop_count++;
}
int
ACE_TMAIN (int argc, ACE_TCHAR *argv[])
{
size_t stack_size = argc > 1 ? ACE_OS::atoi (argv[1]) : default_stack_size;
const int n_tasks = argc > 2 ? ACE_OS::atoi (argv[2]) : DEFAULT_TASKS;
u_int iterations = argc > 3 ? ACE_OS::atoi (argv[3]) : DEFAULT_ITERATIONS;
for (u_int i = 0; i < iterations; i++)
work (ACE_Thread_Manager::instance (),
n_tasks,
stack_size);
return 0;
}
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