{"action":"opened","issue":{"url":"https://api.github.com/repos/pothosware/pothos-library/issues/100","labels_url":"https://api.github.com/repos/pothosware/pothos-library/issues/100/labels{/name}","comments_url":"https://api.github.com/repos/pothosware/pothos-library/issues/100/comments","events_url":"https://api.github.com/repos/pothosware/pothos-library/issues/100/events","html_url":"https://github.com/pothosware/pothos-library/issues/100","id":80730437,"number":100,"title":"feedback loop work but we have a visualzation lock-up","user":{"login":"guruofquality","id":184117,"avatar_url":"https://avatars.githubusercontent.com/u/184117?v=3","gravatar_id":"","url":"https://api.github.com/users/guruofquality","html_url":"https://github.com/guruofquality","followers_url":"https://api.github.com/users/guruofquality/followers","following_url":"https://api.github.com/users/guruofquality/following{/other_user}","gists_url":"https://api.github.com/users/guruofquality/gists{/gist_id}","starred_url":"https://api.github.com/users/guruofquality/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/guruofquality/subscriptions","organizations_url":"https://api.github.com/users/guruofquality/orgs","repos_url":"https://api.github.com/users/guruofquality/repos","events_url":"https://api.github.com/users/guruofquality/events{/privacy}","received_events_url":"https://api.github.com/users/guruofquality/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/pothosware/pothos-library/labels/bug","name":"bug","color":"fc2929"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-05-26T01:12:13Z","updated_at":"2015-05-26T01:12:13Z","closed_at":null,"body":"Doing a simple feedback loop (lets say an adder output to input1 with preload set) works and we have unit tests for this, however, there is a strange lock-up issue when visualizing this with a plotter widget in the gui. This was not always an issue so I suspect a newly introduced bug during development...\r\n\r\nThe reason this is a pothos-library issue and not pothos-gui is that I believe this is related to a mistake in some buffer handling code. The feedback block will produce single element outputs per work cycle, however, the framework should be sticking these single outputs into a contiguous buffer chunk, and there should not be any obvious performance impact outside of the feedback block itself.\r\n\r\nInvestigate."}}