Boost threads
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Boost threads allow launching new threads using boost::thread objects. Threads can be joined to wait for completion or detached to let them run independently. Running threads can be interrupted by calling interrupt() on their thread object. Boost provides portable ways to sleep threads or get their unique IDs. Mutexes like boost::mutex can lock critical sections in multithreaded code.
Boost threads
- 2. Launching a threadPortable Headers#include <boost/thread.hpp>Launching a threadvoid find_the_question(intthe_answer); boost::thread deep_thought_2(find_the_question,42);
- 3. Launching a threadstruct callable { void operator()(); };boost::thread make_thread() {callable x; return boost::thread(x);// x is destroyed, but the newly-created thread has a copy, so this is OK}
- 4. Launching a threadPassing member functions to thread objectm_thread = shared_ptr<thread>(new thread(bind(&CTimerThread::Execute, this)));
- 5. Thread CompletionJoin or timed_join member functions of thread objectJoin – waits for indefinite time for thread to complete – until the method on which the thread executes returnsTimed_join takes boost::posix_time as argumentm_thread->timed_join( boost::posix_time::microseconds(MAXTIMEOUT_IN_MS) );
- 6. Detaching a threadIf boost::thread object is destroyed, the thread is detached.Detached thread continues executing until program terminates or till function returnsdetach() member function of boost::thread object also detaches the thread object.
- 7. interruptA running thread can be interrupted by invoking the interrupt() member function of the corresponding boost::thread object.For specified interruption points like join or sleep, the interrupted thread throws boost::thread_interrupted exception.SuspendThread or ResumeThread not supported?
- 8. Thread IDget_id member function returns a unique id for the thread object.Portable way to sleepboost::this_thread::sleep(boost::posix_time::milliseconds(launchtime));
- 9. MutexVoid foo(){boost::mutex::scoped_lock l(m_mutex);//m_mutex is a boost::mutexobject//Critical section//Unlock happens automatically at end of scope}