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    <p>You can use the following class:</p> <pre><code>class timer { typedef boost::signals2::signal&lt;void ()&gt; timeout_slot; public: typedef timeout_slot::slot_type timeout_slot_t; public: timer() : _interval(0), _is_active(false) {}; timer(int interval) : _interval(interval), _is_active(false) {}; virtual ~timer() { stop(); }; inline boost::signals2::connection connect(const timeout_slot_t&amp; subscriber) { return _signalTimeout.connect(subscriber); }; void start() { boost::lock_guard&lt;boost::mutex&gt; lock(_guard); if (is_active()) return; // Already executed. if (_interval &lt;= 0) return; _timer_thread.interrupt(); _timer_thread.join(); timer_worker job; _timer_thread = boost::thread(job, this); _is_active = true; }; void stop() { boost::lock_guard&lt;boost::mutex&gt; lock(_guard); if (!is_active()) return; // Already executed. _timer_thread.interrupt(); _timer_thread.join(); _is_active = false; }; inline bool is_active() const { return _is_active; }; inline int get_interval() const { return _interval; }; void set_interval(const int msec) { if (msec &lt;= 0 || _interval == msec) return; boost::lock_guard&lt;boost::mutex&gt; lock(_guard); // Keep timer activity status. bool was_active = is_active(); if (was_active) stop(); // Initialize timer with new interval. _interval = msec; if (was_active) start(); }; protected: friend struct timer_worker; // The timer worker thread. struct timer_worker { void operator()(timer* t) { boost::posix_time::milliseconds duration(t-&gt;get_interval()); try { while (1) { boost::this_thread::sleep&lt;boost::posix_time::milliseconds&gt;(duration); { boost::this_thread::disable_interruption di; { t-&gt;_signalTimeout(); } } } } catch (boost::thread_interrupted const&amp; ) { // Handle the thread interruption exception. // This exception raises on boots::this_thread::interrupt. } }; }; protected: int _interval; bool _is_active; boost::mutex _guard; boost::thread _timer_thread; // Signal slots timeout_slot _signalTimeout; }; </code></pre> <p>An example of usage:</p> <pre><code>void _test_timer_handler() { std::cout &lt;&lt; "_test_timer_handler\n"; } BOOST_AUTO_TEST_CASE( test_timer ) { emtorrus::timer timer; BOOST_CHECK(!timer.is_active()); BOOST_CHECK(timer.get_interval() == 0); timer.set_interval(1000); timer.connect(_test_timer_handler); timer.start(); BOOST_CHECK(timer.is_active()); std::cout &lt;&lt; "timer test started\n"; boost::this_thread::sleep&lt;boost::posix_time::milliseconds&gt;(boost::posix_time::milliseconds(5500)); timer.stop(); BOOST_CHECK(!timer.is_active()); BOOST_CHECK(_test_timer_count == 5); } </code></pre>
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