Class that represents thread's interest in task scheduling services.
class task_scheduler_observer;
#include "tbb/task_scheduler_observer.h"
A task_scheduler_observer permits clients to observe when a thread starts or stops participating in task scheduling (globally). You typically derive your own observer class from task_scheduler_observer, and override virtual methods on_scheduler_entry or on_scheduler_exit. An instance has a state observing or not observing. Remember to call observe() to enable observation.
namespace tbb { class task_scheduler_observer { public: task_scheduler_observer(); virtual ~task_scheduler_observer(); void observe( bool state=true ); bool is_observing() const; virtual void on_scheduler_entry( bool is_worker ) {} virtual void on_scheduler_exit( bool is_worker } {} }; }