On Wed, Jul 02, 2008 at 12:35:12PM -0600, Chuck Swiger wrote: > In gr-gcell/src/qa_fft.py there is a method of gcell called 'set_singleton'. > > gcell.set_singleton(self.mgr) > > All I can glean from the source is it has something to do with boost weak > pointers. What, basically, is it doing? I've played with the python code > to stream data to multiple spe's and it all works as expected. All I know > is that if it's commented out we get: > > terminate called after throwing an instance of 'boost::bad_weak_ptr' > what(): tr1::bad_weak_ptr > Aborted > > > From boost: > > weak_ptr <boost/weak_ptr.hpp> Non-owning observers of an > object > owned by shared_ptr. > > --Chuck
gcell.set_singleton stores away the gc_job_manager object that the gr-gcell (N.B., not gcell) code uses. The various work methods that want to use gcell need to be able to find the job manager. They retrieve it by calling gc_job_manager::singleton(). Eric _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
