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// $Id: num_threads.cpp 91813 2010-09-17 07:52:52Z johnnyw $
#include "ace/OS_NS_unistd.h"
#include "ace/Monitor_Control/Monitor_Control.h"
#include "examples/Monitor/MC_Test_Utilities.h"
#if defined (ACE_HAS_MONITOR_FRAMEWORK) && (ACE_HAS_MONITOR_FRAMEWORK == 1)
class Worker : public ACE_Task_Base
{
public:
int svc (void)
{
ACE_OS::sleep (5);
return 0;
}
};
/// Subclass of ACE_Task_Base, meaning that the override of
/// the svc() method below will run in a new thread when
/// activate() is called on a class instance.
class Monitor_Checker : public ACE_Task_Base
{
public:
int svc (void)
{
/// Get an instance of the MC service singleton.
MC_ADMINMANAGER* mgr =
ACE_Dynamic_Service<MC_ADMINMANAGER>::instance ("MC_ADMINMANAGER");
/// Call on the administrator class to look up the desired monitors.
ACE::Monitor_Control::Monitor_Base *thread_monitor =
mgr->admin ().monitor_point ("OS/System/NumThreads");
if (thread_monitor != 0)
{
/// Query each monitor for its data every 2 seconds, and call the
/// appropriate display function.
for (int i = 0; i < 5; ++i)
{
ACE_OS::sleep (2);
Monitor_Control_Types::Data data (thread_monitor->type ());
thread_monitor->retrieve (data);
MC_Test_Utilities::display_num_threads (data);
}
thread_monitor->remove_ref ();
}
return 0;
}
};
#endif /* ACE_HAS_MONITOR_FRAMEWORK==1 */
int
ACE_TMAIN (int /* argc */, ACE_TCHAR * /* argv */ [])
{
#if defined (ACE_HAS_MONITOR_FRAMEWORK) && (ACE_HAS_MONITOR_FRAMEWORK == 1)
/// Set the timer for # of threads check at 2 sec.
Monitor_Base *num_threads_monitor =
create_os_monitor<NUM_THREADS_MONITOR> (0, ACE_Time_Value (2));
/// Runs the reactor's event loop in a separate thread so the timer(s)
/// can run concurrently with the application.
START_PERIODIC_MONITORS;
/// Run the monitor checker in a separate thread.
Monitor_Checker monitor_checker;
monitor_checker.activate ();
/// Spawn 100 threads, sleep until they finish.
Worker worker;
worker.activate (THR_NEW_LWP | THR_JOINABLE | THR_INHERIT_SCHED, 100);
ACE_OS::sleep (6);
/// End the reactor's event loop, stopping the timer(s).
STOP_PERIODIC_MONITORS;
num_threads_monitor->remove_ref ();
#endif /* ACE_HAS_MONITOR_FRAMEWORK==1 */
return 0;
}
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