Here's a bit more detail of my current problem. I have implemented destructors within ClassA and ClassB. When adding this thread to the thread_group, the thread objects destructors are being called as soon as they're added to the thread_group. struct MyStruct : ... { boost::thread_group threads; }; template <class Event, class FSM> void psm_::MyEvent::on_entry(Event const& ev, FSM& sm) { auto bb = std::make_shared<bounded_buffer<MyData>>(100); ClassA<bounded_buffer<MyData>> c_a(bb); ClassB<bounded_buffer<MyData>> c_b(bb); threads.add_thread(new boost::thread(c_a); // destructors called here threads.add_thread(new boost::thread(c_b); } I've wrapped the thread_group within unique_ptr so that I can call reset, but I don't even make it to this point because the thread objects have already been destroyed when being added to the thread (and program exits). template <class Event, class FSM> void psm_::MyEvent::on_exit(Event const& ev, FSM& sm) { std::unique_ptr<boost::thread_group> tg(&threads); tg.reset(); threads.interrupt_all(); threads.join_all(); } And if I don't add the destructors to the thread objects (ClassA, ClassB), I am able to reach on_exit when I need to. Any thoughts as to why the destructors (which I need to make use of in on_exit) are being called when adding the new threads? On Wed, May 20, 2015 at 1:47 PM, Lane < software.research.development@gmail.com> wrote:
I know you did, and thats still one path I'm following, but I'm having a hard time trying to understand how to wrap it in the way I currently have it written. If you have the time, please post.
On Tue, May 19, 2015 at 7:29 PM, Gavin Lambert <gavinl@compacsort.com> wrote:
On 20/05/2015 08:40, Lane wrote:
Thanks for the explanation, that helps. But what I'm looking to do is find a way to call the destructor on the thread object. The ClassA and classB objects are connected to a USB device and I need to find a way to properly shut them down before destroying the threads in on_exit(). Any thoughts?
I covered that in my second reply. After joining the threads, you have to destroy the thread_group. But first you must make it destroyable, by putting it in a unique_ptr.
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